Furuno2115 Service Manual

MARINE RADAR

FR-2115/2125

F I R S T E D I T I O N : D E C 1 9 9 8

Yo u r L o c a l A g e n t / D e a l e rFURUNO E L E C T R I C C O., LT D.c

9 - 5 2 , A s h i h a r a - c h o ,N i s h i n o m i y a , J a p a n 6 6 2

Te l e p h o n e : 0 7 9 8 - 6 5 - 2 1 1 1Te l e f a x : 0 7 9 8 - 6 5 - 4 2 0 0

A l l r i g h t s r e s e r v e d . Printed in Japan

P U B . N o . S M E - 3 4 6 4 0 - AF R - 2 1 1 5 / 2 1 2 5( K A O K )

CONTENTS

Chapter1. GENERAL1.1Outline...........................................................................1-1

1.2 Boards & Major Components.....................................1-2

1.3 Specifications................................................................1-3

Chapter 2. BLOCK DESCRIPTION2.1 Overview.......................................................................2-1

2.2 Block Diagram of Display Unit....................................2-2

Function of Each Board (Display Unit) ..........................2-3

Start-up Sequence ..........................................................2-5

ARPA start-up sequence.................................................2-6

Block Diagram of Display SPU Board ...........................2-7

Video Signal Flow .........................................................2-8

Block Diagram of SPU Board (Video Amplifier) ...........2-9

Auto Tuning Function ....................................................2-10

Tuning Indication...........................................................2-11

Manual Tuning...............................................................2-11

Tuning Circuit................................................................2-11

Echo averaging (EAV 1/2/3)...........................................2-12

Memories & Memory Frame Priority .............................2-13

Antenna on/off Control ..................................................2-14

Check of ARP and RP board Connection .......................2-15

ARP-23 vs. ARP-26.......................................................2-15

Simple ARPA block diagram .........................................2-16

ARPA block diagram .....................................................2-17

ARPA target acquisition and Tracking............................2-18

ARPA INITIAL SETTING MENU................................2-19

Block Diagram of RP Board...........................................2-22

INPUT/OUTPUT Data on INT Board (03P9252)...........2-23

Sentences Receivable at J450 on INT-9170....................2-24

Radar and ARPA output signal from INT-9170 ..............2-25

Monitor signal from J449...............................................2-26

Power Supply Circuit (DC) ............................................2-27

Power Supply Circuit (AC) ............................................2-29

CONTENTS

2.3 Scanner Unit................................................................ 2-31

General.......................................................................... 2-31

Block Diagram of Scanner Unit ..................................... 2-32

Chapter 3. ADJUSTMENT3.1 Adjustment (Display Unit).......................................... 3-2

Location of Major parts ................................................. 3-2

Adjustment of CRT........................................................ 3-5

3.2 Adjustment (Scanner Unit)......................................... 3-15

FR-2125 (RTR-063) ...................................................... 3-17

FR-2115 (RTR-062) ...................................................... 3-21

Chapter 4. MAINTENANCE4.1 Dip Switches................................................................. 4-2

4.2 Jumper Settings........................................................... 4-3

4.3 LED Status .................................................................. 4-4

4.5 Notice on Replacing Major Parts................................ 4-8

4.6 Program Numbers....................................................... 4-9

4.7 How to update system program.................................. 4-9

4.8 Alternation of Power Supply....................................... 4-11

Chapter 5. TROUBLESHOOTING5.1 Outline ......................................................................... 5-1

5.2 Error Message.............................................................. 5-1

5.3 Troubleshooting Flow Charts....................................... 5-1

Exploded View ................................................................ D-1

Mechanical Parts List ................................................... M-1

Schematic Diagrams ..................................................... S-1

Electrical Parts List ....................................................... E-1

1-1

1.1 Outline

This manual provides the information necessary for the servicing and adjustment of the radarsFR-2115 and FR-2125.

The antenna unit uses a Log IF amplifier.

The features are;

� 6 pulselengths enabling echo size on the screen to be similar in all ranges

�Flash ROM enabling program update to use a PC

�Non-interlace, high-resolution display (1024x1280 dots)

�New microprocessing technology with high-speed high-density gate array

�Radar mapping capability

(Lines and Marks can be entered without the RP board, Gyro and L/L data required)

�New cast aluminum scanner gearbox

�New series of streamlined radiators, fixing feeder waveguide not required at installation

�Display unit separable into Monitor, Control Unit, and Processor Units

�Stabilized antenna rotation

� Improved short-range performance using shorter pulselength and higher repetition rate thanbefore.

The table below shows the major specifications of each model.

Functions FR-2115 FR-2125

Maximum Range 72 NM(R-type) 96 NM(IMO type)

120 NM(R-type) 96 NM(IMO type)

Program Number 0359149-1XX�English� Japanese�

Tuning Voltage(displayed at manual tuning) 2.0 V to 32 V

RF Module RTR-062 RTR-063

Antenna Rotation 24 rpm or 42 rpm

Output Power 12 kW 25 kW

TX-HV Board HV-9017 A HV-9017 B

Input Voltage (Ship’s Mains)24/32 VDC : 21.6 to 41.6 V110 VAC : 90 to 126 V220 VAC : 198 to 253 V

The major parts and P.C. Boards used in the display and scanner units are tabulated on the nextpage.

Chapter 1. GENERAL

1-2

1.2 Boards & Major ComponentsDISPLAY UNIT

Board Name FR-2115 FR-2125

SPU Board 03P9253

PTU (PWR) Board DC : 03P9246, AC : 03P9245

FILTER Board DC : 03P9226, AC : LF-210

TX-HV Board HV-9017A HV-9017B

PANEL Board (in control head) 03P9255

PAL Board (in control head) 03P9254

PAR Board (in control head) 03P9256

INT Board 03P9252

Mother Board 03P9251

ARP Board (Optional ARP-26) 18P9002 B

RP Board (Optional RP-26) 14P0298

Card I/F Board (Optional RP-26) 14P0299

PDM Board PDM-9025

Gyro Board (Optional GC-8) 64P1106 A

PM Board (Optional PM-30/50) 03P9225

CRT Unit CDT2136B

SCANNER UNIT

Board Name FR-2115 FR-2125

MODULATOR Board 03P9244 A 03P9244 B

RFC Board 03P9243 A 03P9243 B

IF AMP Board 03P9232

INTERFACE Board 03P9242

Limitter RU-9099

MIC RU-9253/RU-9371

Magnetron MG5241 MG5436

Circulator RC-3686

Scanner Motor D8G-516 (24 rpm)/D8G-571 (42 rpm)

Signal Cable RW-4873

1-3

1.3 Specifications

SCANNER UNIT

ITEM FR-2115 FR-2125

Radiator Type Slotted Waveguide Array

Radiator Length 4 ft (XN12AF) 6.5 ft (XN20AF) 8 ft (XN24AF)

Horizontal Beamwidth 1.8 deg. 1.23 deg. 0.95 deg.

Vertical Beamwidth 20 deg.

Within +10 deg. to –10 deg. ofmainlobe –28dB or less

SidelobeAttenuation Outside +10 deg. to –10 deg. of

mainlobe –32dB or less

Polarization Horizontal

Antenna Rotation approx. 24 rpm/approx. 42 rpm

Scanner Housing Structure Open Radiator

Standard 1.65 m 2.15 mCompass Safe Distance

Steering 1.25 m 1.60 m

TRANSCEIVER


Magnetron MG5241 MG5436

Frequency & Modulation 9380 MHz to 9440 MHz, P0N (X band)

Peak Output Power 12 kW 25 kW

0.07 µs, approx. 3000 Hz (S1 : 0.125 nm to 1.5 nm)

0.15 µs, approx. 3000 Hz (S2 : 0. 5 nm to 3 nm)

0.3 µs, approx. 1500 Hz (M1 : 0.75 nm to 6 nm)

0.5 µs, approx. 1000 Hz (M2 : 3 nm to 24 nm)

0.7 µs, approx. 1000 Hz (M3 : 3 nm to 24 nm)Pulselength & PulseRepetition Rate

1.2 µs,approx. 600 Hz (L : 12 nm to 48 nm)approx. 500 Hz (L : 72 nm ,R-type/ 96 nm ,IMO-type)

1.2 µs,approx. 600 Hz (L : 12 nm to 48 nm)approx. 500 Hz (L : 120 nm R-type/ 96 nm ,IMO-type)

Modulator FET Switching

Duplexer Circulator with diode limiter

Tuning Automatic or Manual

Intermediate Frequency 60 MHz

Bandwidth 25 MHz (0.07 µs, 0.15 µs, 0.3 µs), 3 MHz (0.5 µ, 0.7 µ, 1.2 µ)

1-4

DISPLAY


Picture Tube PPI (Raster scan, Daylight display)

IMO type; FR-2115/2125: 96 nm

Non-IMO type; FR-2115 : 72 nm, FR-2125 : 120 nmRange Scale (nm)

0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 32 48 72 96 120

Range Ring lnterval 0.025 0.05 0.1 0.25 0.2 0.25 0.5 0.5 1 1 2 2 4 4 8 8 12 16 20

Number of Rings 5 5 5 3 5 6 4 6 4 6 4 6 4 6 4 6 6 6 6

Bearing Resolution 1.8 deg. (XN12AF), 1.23 deg. (XN20AF), 0.95 deg. (XN24AF)

Range Discrimination Better than 20 m

Bearing Accuracy +1 deg to –1 deg.

Minimum Range Meets 35 m HSC requiments

Range Ring Accuracy

VRM Accuracy1 % of range or 15 m, whichever is the greater

I/O Ports

IEC-61162-1 port (two inputs, J450/J455)

IEC-61162-1 output port (J450) : $RAOSD, $RARSD

ARPA data output port (J454) : IEC-61162-1, $RATTM, ARP-26 required

RS-232C port (input/output, J456) : System program updating

Gyro port (input, J446) : AD100 format

Speed Log port (input, J448) : Contact-closure signal

Alarm output (J452) : +12 V buzzer drive signal

Remote Display port (two outputs, J442/J443) : TRU-HD, BP, TRU-TRIG,VIDEO

EXT. ARPA port (output, J444) : ARPA-HD, ARPA-BP, ARPA-TRIG, ARPA-VIDEO

Interswitch port (J457/J458) : For RJ-7

Monitor port (J449) : For PC monitor, Buffer PCB required

NAV Data Input

IEC-61162-1/NMEA 0183

Own ship’s position : GGA>RMC>RMA>GLL

Speed : RMC>RMA>VTG>VHW

Heading (True) : VHW

Heading (Magnetic) : VHW

Course (Trne) : RMC>RMA>VTG

Course (Magnetic) : VTG>RMC>RMA

Waypoint (Range/Bearing) : RMB>BWC>BWR

Time : ZDA

Loran time difference : RMA>GLC>GTD

Water depth : DPT>DBT>DBK>DBS

Water temperature : MTW>MDA

Standard 1.40 mCompass safetyDistance Steering 1.05 m

1-5

ENVIRONMENTAL CONDITIONS


Scanner Unit �25 deg. to +70 deg.Ambient Temperature

Display Unit �15 deg. to +55 deg.

Humidity Relative humidity 95% or less at +40 deg.

Vibration IEC 945, Edition 3

POWER SUPPLY & POWER CONSUMPTION


AC Power Supply110 VAC : 90 to 126 V

220 VAC : 198 to 253 V

DC Power Supply 24/32 VDC : 21.6 V to 41.6 V

DC Set 230 W (no wind)/300 W (100 knots) 260 W (no wind)/330 W (100 knots)PowerConsumption AC Set 360 VA (no wind)/465 VA (100 knots) 410 VA (no wind)/515 VA (100 knots)

2-1

2.1 Overview

Outline

Figure 2.1 Simplified block diagram

TX

The trigger pulse from the SPU (Processor) Board is delivered to the MODULATOR Boardwhich outputs the signal to oscillate the magnetron, and then radar wave is emitted from theradiator.

RX

The 9.4 GHz echo signal received by the antenna is converted to 60 MHz signal by the MIC,amplified by IF Amplifier, and fed to the SPU (Processor) Board as a video signal. It is digitallyprocessed and then displayed on the CRT. The SPU Board contains a video amplifier.

Auto Plotter (optional)

The following signals are applied from the SPU Board to the ARP-26 Board: Heading, Bearingpulse, Video, Trigger, Bearing in AD format, and Ship’s speed in IEC-61162. Target acquisionand tracking are performed on the ARP Board, and displayed on the CRT. Target data includestarget position, CPA, TCPA, Speed, and Course.

Plotter (optional)

Data such as latitude and longitude in IEC-61162 format is delivered from the SPU Board to theRP Board. Plotter data generated on the RP board is output to the SPU Board and processed todisplay them on the screen. The plotter menu is generated on the SPU Board.

Chapter 2. BLOCK DESCRIPTION

2-2

HD

BP

Buffer

VIDEO

EXT HD

EXT BP

EXT TRIG

EXT VIDEO

MOTHERBoard(03P9251)

Level Adj.

Selection SW(Menu-Selection)

Scanner Unit HD,BP, TRIG,VIDEO

RJ-7 orMain Radar EXT HD,EXT BP, EXT TRIG, EXT VIDEO

MOTHERBoard(03P9251)

Buffer

Buffer

Buffer

Buffer

Buffer

BufferLevel Adj.

INT Board(03P9252)

Video Amp.Level Adj.

SPU Board(03P9253)

GYRO Board(64P1106)

PhotoCoupler

NAV DATA

NoiseFilter

SPEED LOG

Photo Coupler

AD-100

A/D CONV.

POWER

A/D CONV.SignalProeessor Memory

RP Board(14P0298)Priority(layering)

Color paletteD/A CONV.

CRT

CPU

Buffer

HD,BP

VIDEO

Buffer

Gate Array(G/A)

A/D CONV. Front end

HD,BPVIDEO

D.P RAM

D.S.PMAIN CPU

D.P RAM

ARP Board(18P9002)

SPDCRS

D.P RAM

Scrolling

VRAM

AGDC

CPU

Multi-plexer

L/L,S/C

PWR Board

Regulator Protector

OvercurrentDetector

TX HV

Rectifier

Ships MainsDC 24/32 V,AC 100/110/115 V or AC 220/230 V

PM Board (03P9225)

Ships MainsAC 100/110/115 VorAC 220/230 V

PerformanceMonitor

+12 V

CPU

Switches(PM ON/OFF, Degauss)

PAL Board(03P9254)

Switches(Radar Picture, Menu)

PAR Board(03P9256)

DEGAUSS Board(PDM9025)

Power

MagnetismDetector

Degauss

PM ON

HALL 1/2

DEGAUSS

Trackball

TB301

Level CONV.(TTL RS232C)

To G/A on SPUPNL Board(03P9255)

SPDCRS

(Optional)

GYROCOMPASS

TO RF UNIT

To degauso coil

2.2 Block Diagram of Display Unit

FR2115-SME-22

Video

From ACRTC

H SYNC/V SYNC/DOT CLK

P.F. Signal from PWR Board

Buffer

CardI/F Board(14P0299)

Chart Card/ERC Card/RAM Card

H SYNC(64 kHz),V SYNC(60 Hz),DOT CLK(108.5 MHz)

(Optional)

(Optional)

(Optional)

(Optional)

AC:03P9245DC:03P9246

2-3

Function of Each Board (Display Unit)

Board Name Function

SPU Board03P9253

1) Contains a video amplitier circuit.(a) Applies GAIN, STC, FTC and IR to video signal and outputs to the A/D

converter.(b) Adjusts video signal input level (adjusted by pot. VR140).(c) Changes STC curve according to the antenna height set on the Radar menu.(d) Echo Stretching 1.

2) Performs A/D conversion of video signal.3) Echo averaging (EAV 1/2/3)4) Constructs radar picture from HD, BP, TRIG, and VIDEO signals.5) Controls keyboard.6) Mixes data being fed from ARP and RP boards to display them on the screen.7) Displays navigation data being fed from a navigator.8) Reads and displays trackball, EBL, and VRM data.9) Controls tuning circuit.10) Outputs “degauss” signal to the DEGAUSS Board.11) Outputs Tx trigger and pulselength signals to the antenna unit.12) Backs up menu settings, radar map, tune voltage, tune Ind. voltage, and

waypoint with the EEPROM (U10).13) Echo Stretching 2/3.

14) Generates menus and radar maps.

15) Echo trailling.

16) Checks for the presence of ARP and RP boards at power-up.

ARP Board18P9002

1) Compatible with latest ARP-23 hardware.2) Converts GAIN-, STC-, FTC-, and I/R-processed video signal to quantized video

(QV) and sends back to the SPU Board.3) Performs automatic and manual target acquisition and tracking.4) Detects HD, BP, TRIG, VIDEO, LOG and GYRO signal errors.5) Calculates CPA and TCPA.6) Detects land echo.7) Outputs ARPA data to the SPU Board : Target No., R/B, CPA, TCPA, etc.8) Processes trial maneuver.

RP Board14P0298

1) Generates data (grid, own ship mark, mark, and ship's tracks, etc.) for the plotterdisplay.

2) Backs up data such as ship's tracks and marks.

3) Reads and displays digitized charts.

4) Outputs plotter display data to the SPU Board.

5) Inputs/outputs data (track, marks etc.) from/to the RAM card.

CARD I/F Board14P0299

1) Receptacles of ROM and RAM cards.

2) Used to stores and retrieves data to/from ROM and RAM card.

INT Board03P9252

1) Outputs HD, BP, TRIG and VIDEO signals to a radar slave display.(J442/443, two output ports)

2) Receives HD, BP, TRIG and VIDEO signals from other radar. (J458)3) Inputs/outputs RJ-7 signal. (J458/457)4) Outputs ARPA data to the external equipment. (IEC-61162-2 , J454)5) Outputs external buzzer signal. (J452)6) Outputs V-SYNC, H-SYNC, R, G, B for a PC monitor or hard copier. A buffer

circuit required.7) Inputs speed log signal, contact-closure. (J448)8) Outputs alarm signals, Buffer board required.

2-4

Board Name Function

PNL Board03P9255

1) Outputs encoded data of EBL, VRM and trackball signals.2) Includes GAIN, STC, FTC, and BRIL volumes.3) Includes EBL ON/OFF, VRM ON/OFF, FUNC 1/2/3/4, and Range +/- keys.4) Reads PAL/PAR board status.

PAL Board03P9254

1) Includes ANT ON/OFF, Performance monitor ON/OFF, and degauss switches.2) Includes CPU Fail indicator (LED).

PAR Board03P9256 1) Keys: HL OFF, PANEL BRILL, ACQ, and menu keys

TX-HV BoardHV-9017

1) Supplies Tx high voltage to the antenna unit.2) Contains overcurrent protector.

DEGAUSSBoardPDM9025

1) Automatically degausses the screen at power-up.2) Detects magnetism and automatically degausses every 20s.3) Degausses the screen when DEGAUSS switch is pressed.

MOTHER Board03P9251

1) Connects each PCB.2) Includes a connector for the antenna unit.3) Includes a connector for the RJ-8.4) Includes a connector for the control head.

GYROCONVERTERBoard64P1106

1) Converts gyrocompass signal into AD format signal.2) Outputs Max. 6 AD format signal (25 ms or 200 ms jumper selection, select 25

ms for radar and ARPA.)

PTU Board (AC)03P9245

1) Outputs -12V, +12V, +140V (for CRT), +5V and +32V (for tuning cont.), andmotor drive voltage.

2) Outputs Power Fail (PF) signal to the RP Board.3) 110 VAC, 24 rpm : 03P9245A

110 VAC, 42 rpm : 03P9245C220 VAC, 24 rpm : 03P9245D220 VAC, 42 rpm : 03P9245F

4) Contains overcurrent protector for -12V,+12V, and +140V.5) Contains abnormal input voltage detector.

110 VAC : Low voltage, 73 to 78 VAC; high voltage, 146 to 170 VAC220 VAC : Low voltage, 130 to 144 VAC; high voltage, 260 to 288 VAC

PTU Board (DC)03P9246

1) Outputs -12V, +12V, +140V (for CRT), +5V and +32V (for tuning cont.), andmotor drive voltage.

2) Outputs Power Fail (PF) signal to the RP Board3) DC 24/32 V, 24 rpm : 03P9246 A

DC 24/32 V, 42 rpm : 03P9246 C4) Contains overcurrent protector for -12V,+12V, and +140V.5) Contains abnormal input voltage detector. Low voltage, 21.6 Vdc; high voltage, 41.6 Vdc

Color MonitorAssy.CDT-2136B

1) No HV is generated when H Sync. Signal is input to the monitor circuit.

PM Board03P9255optional

1) Power supply circuit for the performance monitor

2-5

Start-up SequenceRadar start-up sequence

Process

1. The soft start circuit activates to protect the power ON/OFFrelay contacts.

2. The input voltage monitor checks for abnormal voltage.When ship’s mains is abnormal the ON/OFF relay trips off.

3. The inverter comes on and outputs all line voltages. TheLED comes on and the inverter goes off when overcurrentis detected.

4. ROM, RAM, I/O port, custom IC, AGDC and VRAM areinitialized.

5. The system is initialized using EEPROM and DIP switchdata.

6. The timer starts counting down from 3 minutes (timeremaining for warm-up of magnetron).

7. Checks for the absence/presence of a gyro signal.

8. Checks for the absence/presence of the ARP and RPBoards.

9. The SPU Board starts operating.

Note) When H-sync signal is not applied to the CRT unit,no HV is generated, resulting in nothing on the screen.

10. The bearing scale, countdown indication, etc. appear.

11. The screen is degaussed automatically.

3-minute warm-up can be skipped by pressing [ENTER]several times while pressing and holding down [HL OFF]. (Do not release this information to user.)

12. Three-minute warm-up ends.

13. The radar goes into stand-by.

14. Checks for the presence of the BP (Bearing Pulse) signal.

15. The tuning circuit goes into “short search mode.”

16. When the range is changed, the tuning circuit goes into“short search mode.”

17. Panel settings are written onto the EEPROM.

18. Time data are written onto the EEPROM.

2-6

ARPA start-up sequence

Figure 2.2 ARPA Start-up sequence

Initializes DSP.

CR17 on pcb18P9002 blinks every two seconds.

Waits for initializationof DSP RAM (betweenDSP and MAIN CPU).

FE starts operating.

Monitors gyro andspeed log signals.

FR2115-SME-13

END

Yes

No

OK

Tx ON

Monitors radar inputsignals (HD, BP, TRIG, VIDEO).

No

Yes

Yes

OKNo

Yes

Display radar picture (radar signal processing)

ARPA(18P9002)

Initializes NAIN CPU.

Initializes DSP RAM(between MAIN CPU and SPU).

CR1 on pcb18P9002 blinks.

Tx ON

END

Yes

No

Initializes DSP RAM(between DSP andMAIN CPU).

YesNo

GYRO/LOGAlarm

Normal Operation

The LED on ARPA Boardlights

Power ON

Initializes SPU Board.

Communicate withDPRAM on ARPABoard to confirmpresence/absence ofARPA Board.

YES

Starts up withno ARPA.

Starts up with ARPA.

RADAR

No

Yes

* A reset pulse is generated when +5 V line drops to about 4.2 V.

(03P9253)

2-7

C19

C14

B23

B25

C25

C13

A13

A17

B4

C17

C11

C12

A21

P551

P551

P552

QV

VIDEO

AC SEA VR

GAIN VR

A/C RAIN VR

BEARING

HEADING.P

TUNE IND

KEY CONT.

NAV DATA INTPUT

GYRO DATA

GYRO CLOCK

TRACKBALL

4 Vpp

0.7 V

0 V8 V to 12 V

Video Amplifier

MAX : 5 V, MIN : 0 V



VideoSelector

U43A/D ConverterREF VoltageGenerator U35

(360 pulses,144Hz)

(Gate Array)

Filter

R2/C1

STBY : 0.7 V, TX : About 3 V

U45

TB XA

TB XB

TB YA

TB YB

CPU

#75

#82

#79

#97

#73#74

#75

#76

U17

µs

Max. brilliance : 0.7 Vpp

A30A31A32

P552

To CRT

C20

P552

To CRT

U72,73,74,75,76,77,78

Even Level

Odd Level

Trigger Gen.Odd EchoHandling

SamplingI/F RejectionNoise Rejection

U4503S9060

Signal Processing,Echo Trailing,Echo Processing,

Coordinate Conversion(r, ) (X,Y)

INTTRIG

U15

Echo VideoMemory U24,26,28, 29,30

Priority

U33

TP7 (H SYNC)

TP8 (V SYNC) 4 V

16.63ms

4 V

15.63us

FlashROM(8M) U11

RAM

U5,7

EEPROM

U10

ACRTC

U16

FR2115-SME-23

A22

A23

A24

R134

Trigger Gen.Even EchoHandling

SamplingI/F RejectionNoise Rejection

U4403S9060

U72:VlEVEL 0U73:VlEVEL 2U74:VlEVEL 4U75:VlEVEL 6U76:VlEVEL 8U77:VlEVEL 10U78:VlEVEL 12

U79,81,82,83,85,86,88

U79:VlEVEL 1U81:VlEVEL 3U82:VlEVEL 5U83:VlEVEL 7U85:VlEVEL 9U86:VlEVEL 11U88:VlEVEL 13

U40#6#5 #7

P552

P551

#25

#26

P551

U35

PLLU37

PLLU46

#98#14

#14

#4

#4#103

Timing Adjuster & Divider

INTTRIG

EchoProcessing

U27

EchoTrailingMemory U25

Color PaletleD/A ConverterP/S Converter U34

CRT VIDEO(R,G,B)

A20 To CRT

#97

#47

#48

Sampling Clock

8192 pulses

CharacterGenerator

U42

GraphicMemory

U1,3,4,6,8,9

From RP-26(Video)

CR6

Buffer U18,19

To Dualport RAM in ARP/RP

A17NAV DATA OUTTPUT

CR2#83

CR1

B5KEY DATA

CR5

#80

B4To INS

CR4

B5From INS

CR8

#84

#83

C7TO RJ-7

CR3

C8FROM RJ-7

CR7

#36

#37

TP4(VIDEO)

TP3

C16

P551

OPTION TRIGGER

C17 TX TRIGGER

A25 TUNING CONT.

From U35 #89

TP6

From U35 #83

TP5

From U94 #1

TP9

TP1,2

OSC32 MHz

Y140 MHz

OSC12.5 MHz

OSC

54.25 MHz

4(50 MHz)

* Socket type At board replacement remove EEPROM and put on to new board.

* + cursor generation

SPU Board (03P9253)

Figure 2.3 Block Diagram of SPU Board

2-8

Vid

eo S

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wT

he f

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elow

sho

ws

vide

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gnal

flo

w.

Th

e vi

deo

sign

al f

rom

the

sca

nner

uni

t an

d an

ext

erna

l rad

ar a

re a

djus

ted

in le

vel b

y R

21 a

nd R

134

onth

e IN

T b

oard

03P

9252

res

pect

ivel

y so

tha

t th

e m

ain

bang

lev

el a

t T

P6

on t

he I

NT

boa

rd i

s 3.

9 to

4.1

Vpp

. T

he

R14

0 on

the

SP

U

boar

d is

fact

ory-

adju

sted

so

that

the

mai

n ba

ng le

vel i

s 3.

9 to

4.1

Vpp

at T

P12

.

The

vid

eo s

igna

l fro

m th

e S

PU

boa

rd to

the

AR

P b

oard

is g

ain-

, ST

C-,

and

A/C

sea

-adj

uste

d.

Whe

n th

e ra

dar

is u

sed

as a

rem

ote

disp

lay,

no

sign

al is

out

put f

rom

Ext

erna

l AR

PA

and

RJ-

7 po

rts.

Fig

ure

2.4

Vid

eo S

igna

l

J417

MO

TH

ER

Boa

rd

IF IN

03P

9251

J414

1A

19A

20A

21

From

RF

U

nit

J444

INT

Boa

rd03

P92

52

P41

7T

P1

J458

8

TP

3

R21

R13

4

K2

C5

VID

EO

SE

LJ4

17

abou

t 4.

5 V

pp

abou

t 4

Vpp

+12

V

Q18

,19

Q40

,41

Q37

,38

Q27

,28

Q10

,11

Q22

,26

Q8,

9

Mai

n/re

mot

e di

spla

y an

dR

adar

1/2

sel

ectio

n

AR

PA V

IDE

O

RJ7

VID

EO

OP

VID

EO

A

OP

VID

EO

B

RF

VID

EO

8 15

J457

8

J442

8

J443

C21

C22

B21

P41

7

A19

A20

A21

Ext

erna

l rad

ar o

r R

J-7

J551

MO

TH

ER

Boa

rd

IF IN

03P

9251

J414

C14

Ext

erna

l AR

PA

RJ7

Sla

ve d

ispl

ay

Sla

ve d

ispl

ay

C21

C22

B21

R14

0

SP

U B

oard

P55

1

Vid

eo A

mp.

(GA

IN,A

/C S

EA

-an

d A

/C R

AIN

Adj

ustm

ent)

C14

abou

t4

Vpp03

P92

53T

P12

A18

P55

1A

RP

B

oard

TP

6

FR

-211

5-S

ME

10E

abou

t4

Vpp

2-9

Ant. Height(menu selection)

Buffer

Q9

Mix

Q17

Gate

U87

Filter Buffer

Q11, Q12

Gate

U56

One-shot

U35(Gate Array)

Inverter

Q28

Differential

Q27

Mix

Q46

Amp. &Buffer

Q44, 55, 56

Peaking

Q26

Gain &STCControlQ66, 67

STC Buffer

Q25, 52, 53

A/C RAIN

CR75

Buffer

Q65

Amp.

U93

D/A Conv.

U68 U35

STC VR Curve Generator

Q30, 32, 10, U92

STC inA/C AUTOmode

Q18

STC data memory

0 to 5 V

TP12 TP11

0 to 5 V

TP9

SMPL T

GAIN: -7 to 0 V

A/C SEA: 0 to 5V

A/C AUTO(From SPU Board)

R140

A/C AUTO : OFF

A/C AUTO : ON

*not used

A/C RAIN: -7 to 0 V

about4 Vpp

about 4 Vpp(Adjust by R140) about 4.2 Vpp

3.5V

01us

Block Diagram of SPU Board (Video Amplifier)

VIDEO IN

Conv.

U100Conv.

U100

TP13

STC Curve

Echo stretch(range direction)

Q60 ‘Q64

Gate

U54

Echo stretchon/off

U95

Amp.

Q35, Q37

Gain Cont.

Q34

VideoContrastSelector

U96

Log to LinearConverter

CR57, 59, 71, 72

Amp.

Q13, 14, 21

Buffer

Q22, 23, 15

Gain Cont.(short range)

Q19/20*Gain reduced when FTC is on. *Noise is controlled and

gain lowered on ranges up to 6 mile.

U43

RF VIDEO(To AD Conv.)

TP4

QV VIDEO(From ARPA Board:P551 C19)

FR2115-SME-10G

0 V

4.5 V

Range

High Antenna

Low Antenna

Antenna Height vs. STC Curve

0 V

4.5 V

Range

Sharp Curve (H)

Near STC Curve Selection

Gentle Curve (L)

Standard (M)

10 us

Video contrast(menu selection)

about 4.0 Vpp

1) Mixer (Q17): In A/C AUTO mode, the pulse, whose level is the same as the main bang, is mixed with the video signal. The falling edge of the pulse is coincident with the beginning of the video signal.

2) Mixer (Q46): The output of Q17 is amplified in reverse polarity by Q28, and at the same time, differentiated and then amplified by Q27. The output of Q27 and Q28 is mixed so that the positive video signal without ac component is obtained. Mixer eliminates the DC component of the video signal, or outputs the ac component of the video signal.

3) Peaking (Q26): not used. To improve range discrimination on short ranges, add capacitor C228, 56 to 100 pF on the SPU board.

4) STC Curve: The STC curve is menu-selectable; "ANT HGT", INITIAL SETTING 1 and "CTR STC CURVE", INITIAL SETTING 4. The latter is determined the STC curve near screen center, up to about 10 us.

5) STC in A/C AUTO mode (Q18): A/C AUTO works more effectively, compared with the FR-2100 series. Under heavy rain, use AC AUTO rather than AC SEA, and reduce the gain setting.

6) Video constant (U96) : The video constant is selected in the initial setting 3 menu. Factory-setting is 3 for long range detection, Under snow, rain, and heavy sea, select either 1 or 2. 1: Wide dynamic range. Similar echo to FR-2100. 2: Middle dynamic range. 3: Narrow dynamic range, but high visual intensity.

Figure 2.5 @STC Curves

Selector

VIDEO(To ARPA Board:P551 A18)

2-10

Auto Tuning Function

The system provides auto tuning mode which eliminates the adjustment of the receiver formaximum echoes. The “Tune Initialization” is required after not only the installation but also thereplacement of RF unit, magnetron, MIC, and SPU board, so that the tune control voltages foreach pulse are memorized onto the EEPROM. The figure below illustrates how the tuneinitialization takes place. First, full search is performed using a long pulse to find the tuningpoint (a). Next, short search is performed using all pulses to find tuning points (b). After theinitialization, the pulselength used before the tune initialization is selected.

Full search: Varying tune control voltage (TUNE CONT) from about 5 V to 30 V, the maximum tune indicator voltage is found and that tune control voltage (a) is memorized.

Short search:The tune control voltage changes between the tune voltage (a) plus and minus 2.5 V for fine tuning.

When the radar is set from ST-BY to TX, short search is made twice. When the pulselength ischanged, short search is made once.

Figure 2.6 Tune Initialization

about 32 V

Tuningcontrolvoltage

about 2 V

(a) (b)

Fullsearch

Shortsearch Tracking

Time

LP

Tuningindicatorvoltage

Max. about 3 V

Min. about 1 V

FR2115-SME-14

(b) (b) (b) (b) (b)

LP M3 M2 M1 S2 S1Pulselength

EEPROMbackup

Auto andMan. coarsetuning pt.

Max.Tuning Ind.voltage


Pulse length in useAuto coarsetuning point





2-11

Tuning IndicationThe tuning indicator extends more than 80% of its full length on all ranges at best tuning. Theself-test result display reads the tune indicator voltage.

Manual TuningWhen tuning mode is changed from auto to manual mode, the tuning control voltage (a) found infull search is selected. In manual tuning mode, the graphical tuning control voltage indicatorappears under the tuning indicator. The minimum scale is 2 V and the maximum scale is 32 V.

Tuning CircuitFigure below shows the tuning circuit. Tune control voltage is output from P551, A25 on theSPU board.

Figure 2.7 Tuning Circuit

GA

U35

GA

U44

ENC-ODERU44

D/ACONV.

B21

A25

U62

x1F VT

0 to 5 V

#10 #8

#1#3

x6C VT #12 #14 U94

SUMTUNE CONT.(To MOTHER Board)

FR2115-SME-10B

P551P551

U94

U94

B22

TUNE ENC A.

(From MOTHER Board)

TUNE ENC B.

2-12

Echo averaging (EAV 1/2/3)Remarks on the echo-averaging feature

Echo averaging is a useful feature when used properly. If used improperly, however, theresult could be disastrous.

Objective and principle of echo averagingThe main objective of echo averaging is to discriminate targets (flocks of birds, other ships,fishing floats, etc.) hidden in sea clutter, and stably display long range targets (ship, buoy,island, etc.) which alternately appear and disappear on the screen.

Normally, unstable echoes such as those from sea clutter and noise appear at randompositions with every rotation of the antenna. To distinguish real target echoes from clutter, thepicture is stored and averaged over successive picture frames. If an echo is solid and stable itis shown in its actual intensity. Unstable echoes are reduced in intensity.

The following illustrates how echo averaging EAV 1/2/3 work.

Figure 2.8 Echo Averaging

2-13

Memories & Memory Frame PriorityMemory capacity is 2048x2048 dots, radar display area is 1280x1024 dots, and radius of echodisplay area is 360 dots.

FR-2115-SME-28

360 dots1024 dots

1280 dots

2048 dots

2048 dots

+

+Cursor

Characters Menu Data Mask

Cursor GyroU1 and U3 (4 frames)

no frame

ARPA

Each 1/4 of U4,U6,U8 and U9 (2 frames)RP

no frame (data from RP)Radar mark

Radar mapEach 3/4 of U4 and U6 (3 frames)

Each 3/4 of U8 and U9 (3 frames)Radar echoEcho trailEcho in alarm area

U24,U26,U28,U29,U30 (5 frames)

Highest priority

Figure 2.9 Memory Capacity and Display Area

Figure 2.10 Priority of Each Frame

2-14

Ant

enna

on/

off C

ontr

olT

he S

PU

boa

rd p

rodu

ces

the

ante

nna

on/o

ff si

gnal

. T

he

PW

R b

oard

mon

itors

the

num

ber

of

the

bea

ring

puls

e fr

om t

he s

cann

er

unit

and

chan

ges

mot

or c

ontr

ol v

olta

ge

to m

aint

ain

the

cons

tant

spe

ed o

f an

tenn

a ro

tatio

n. T

he v

olta

ge

betw

een

#1/

#2 a

nd #

3/#4

of

J103

is

abou

t30

VD

C w

ith th

e sc

anne

r un

it di

scon

nect

ed.

To

rota

te th

e an

tenn

a, th

e fo

llow

ings

mus

t be

satis

fied.

1) T

X k

ey p

ress

ed

2) #

A6

of P

551o

n th

e S

PU

boa

rd is

“hi

gh”

3) #

7 of

J10

3 on

the

PW

R b

oard

is “

high

”

4) 1

4 to

24

V d

eriv

ed f

rom

#1/

#2 a

nd #

3/#4

of J

103

on th

e P

WR

boa

rd

Fig

ure

2.11

Ant

enna

on/

off C

ontr

ol

A6

P55

1G

/A

U35

TX

Key

TX

FH

ST

BY

FL03

P92

53(S

PU

Boa

rd)

17

P31

3

AN

T S

W

PAL

Bor

d

17

AN

T O

N/O

FF

S 1

B18

J312

03P

9255

B19

2 3

J313

A6

J551

03P

9251

7

A18

A17

J412

C8

#16

#1#3

2

J415

J417

7

J103

TX

FH

ST

BY

FL

03P

9245

(PW

R B

oard

)

5

P41

703

P92

52(I

NT

Boa

rd)

5

J467

For

TX

/RX

dow

n A

NT

ON

/OF

FE

FR

-213

5SE

FR

-213

5SW

EF

R-2

165D

SE

FR

-212

5WE

FR

-215

5

03P

9254

PAN

EL

Boa

rdM

OT

ER

Boa

rd

5

AN

T.

S

PE

ED

5

6B

P(F

rom

RF

Uni

t)6

22

DJ1

J551

A5

P55

1G

/A

U35

03P

9253

#16

#4

#17

SP

U B

oard

A5

U20

U57

#18

#46

U51

FR

2115

-SM

E-1

0C

Sof

t sta

rtco

ntro

l

Com

para

tor

Cho

pper

Con

trol

Cho

pper

Q94

U92

CR

94,Q

97

F/V

Con

vert

er

U93

1,2

3,4

J103

MO

TOR

(+),

MO

TOR

(-)

EF

R-2

115

EF

R-2

125

*DC

14 to

24

V(W

ith A

NT

) D

C30

V(W

ith o

ut A

NT

)

2-15

Check of ARP and RP board ConnectionThe system checks the connection of the ARP and RP board every power on. If the CPU on theSPU board fails to communicate with the ARPA or RP board, the related display does not appearon the screen, but also the ARP and/or RP line is not displayed on the self-test result display.

ARP-23 vs. ARP-26

The ARP-26 uses the latest hardware of the ARP-23 for FR-2100 series radars, 18P9002-2having U44 of 18S9007. The boards level –1 and –2 having U44 of 18S9001 cannot be used forARP-26. The software has been changed to improve the performance.

The major functional differences are;

1) Operational with 42 rpm scanner unit (ARP-23: 36 rpm)

2) “Scenario” in compliance with HSC performance standards (no scenario)

3) A maximum of 3 reference targets (one target)

4) Variable width of automatic acquisition area from 0.5 to 1.0 nm (0.5 nm fixed )

5) Guard zone alarm for both inward and outward violations (inward only)

6) Vector display time selectable either after 1 min. or within 20 scans (after 1 min.)

7) VBW and VHW speed data in IEC-61162-1 acceptable (not acceptable)

8) TCPA having a minus sign when the ship already passed through the CPA. (always plus)

9) ARPA alarm if watchdog timer signal from the ARP is not received by the SPU boards. (no alarm)

10) Target number of a lost target not being used until all target number are used once.

(using target number of lost target)

2-16

Simple ARPA block diagram

2-17

ARPA block diagram

# #

Figure 2.12 Block Diagram of ARP Board

VideoSweepVelocityConverter

Memoryfor EchoSamplerU56 to 58

Land EchoDetectionTableROM U64

REF OSC U27

LatchU13

RAMU36 to 39

ROMU40

D.P.RAMU45,46

FEDSPU35

BUSI/F

BUSI/F

GYROI/F

GYROCheck

LOGI/F

LOGCheck

TRIGCheck

FIFOU60

HDcheck

Videosignalcheck

BPcheck

D.P.RAMU21,22

Latch U41

BP Counter

Comparator

A/D Converter

ROMU3

RAMU9,10

EEPROMU8

D.P.RAMU4,11

MAIN CPUU2

DIP SWS1

StatusSwitchforErrorDetection

U42,47

Echo Sampler

To SPU Board's DP BUS

CR1

(Blinks every2 sec.)

CR17

TP10

TP11

TP12

TP4

TP2

TP6 TP7

CR32

TP9(QV monitor)

QV output

TP1 TP3

TP5TRIG

VIDEO

BP

HD

TP8

R103(MAX)

R104(MAX)

+5 V

-12 V

+12 V

SpeedLog

Gyro

CR9 (HD Alarm)

CR10(BP Alarm)

CR11(VIDEO Alarm)

CR12(TRIG Alarm)

CR13(<1250 Hz)

CR14(Not Used)

CR15(GYRO Alarm)

CR16(LOG Alarm)

BP U52PLL VCO

FR2115-SME-16

OSCY1

Noise blanker

(Blinks randomly.)

U59

18S9007 U44

2-18

ARPA target acquisition and Tracking

1. Conditions for manual acquisition

The target can be acquired manually under the following conditions.

1) An echo from target must be received for three consecutive sweeps and scans within the acquisitionarea.

2) The target echo must be smaller than the and echo data (at the front end processor).3) A target must be within the acquisition area : 0.2 to 32 nm.4) The ARPA can acquire 30 targets. All 30 may be acquired manually, or 10 manually and 20 auto-

matically.5) No signal error (TRIG, HD, BP, VIDEO, gyro) shall be detected.

2. Conditions for automatic acquisition

The target can be acquired manually under the following conditions.

1) An echo from target must be received for three consecutive sweeps, and seven consecutive scanswithin the acquisition area.

2) The target echo must be smaller than land echo data (at the front end processor).3) The target must be within acquisition area: 0.1 to 32 nm (or 24 nm) depending on initial setting.

Target echoes behind a land echo within the acquisition area cannot be acquired automatically.4) 20 targets can be automatically acquired.5) No signal error (TRIG, HD, BP, VIDEO, gyro) shall be detected.

3. Automatic tracking

1) A tracked target is judged as a lost target when no return is received for nine consecutive scans.When the system detects a lost target, “LOST TARGET” appears on the display and the ARPAsymbol blinks.

2) A lost target will be reacquired and tracked when acquisition condition again becomes satisfactory.3) Automatic tracking is discontinued when the target moves out of the acquisition range (less than 0.1

nm or greater than 32 nm).4) An acquired and tracked target which moves behind a land echo will be declared as a lost target.

ARPA Land DiscriminationA target is recognized as a landmark and not acquired if it is bigger than the preset value in rangeor bearing direction. The preset value is entered though the ARPA Initial setting menu.

2-19

ARPA INITIAL SETTING MENU

Accessing Menu for ARPA Initialization. Press the [RADAR MENU] key five times while pressing and hold-ing down the [HL KEY] key.

ARPA INITIAL SETTING Menu(Keying sequence : [PLOT MENU] [0] [0])

TARGET SELECT

Selected is minimum size of target echoes which will be judged as land.

An echo judged as land cannot be acquired manually or automatically nor is lost targetstatus generated. This discrimination is especially necessary on the S-band radar where thehorizontal beamwidth is greater than that of the X-band radar.

The settings and their specifications are as follows :

0 : Greater than 600 meters




4 : No limit

QV SELECT

Requires no local adjustment; however, it judges whether an echo is land or not by paintingechoes in varying intensity or color. To enable QV SELECT, remove jumper JP11 on the18P9002 board:

0 : All echoes painted brown (same as QV on previous radars)

1 : Brown color (non-land echoes) Yellow color (land echoes, azimuth direction)

2 : Brown color (non-land echoes) Yellow color (land echoes and target echoes behind land echoes)

3 : Brown color (all echoes) Yellow color (leading and trailing edges of all echoes)

2-20

TARGET OUTPUT DATA

Output setting of “RATTM” data, output by J454 on the INT Board.

OFF : “RATTM” data not output.

REL : “RATTM” data output. Target course shown in relative bearing.

TRUE : “RATTM” data output. Target course shown in true bearing.

DISP CPA,TCPA

Selects wether CPA and TCPA are displayed or not on the screen.

START TIME TARGET VECT

Selects time to allow the vector to appear on the screen after the acquition

1 MIN: The vector appears on the screen 1 minute after the acquisition.

20 SCANS: The vector appears on the screen 20 scans after the acquisition. (about 50 seconds: 24 rpm, about 30 seconds: 42 rpm)

TARGET DATA

Course in the target data can be displayed in relative or true mode when the relative vectoris selected.

INPUT SIGNAL CHECK

[INPUT SIG CHECK 1](Keying sequence : [PLOT MENU] [0] [8])

HD = OK ERR (No heading signal input to ARPA Board for 10 seconds)

BP = OK ERR (No bearing signal input to ARPABoard for 10 seconds)

T = OK ERR (No trigger signal input to ARPABoard for 10 seconds)

V = OK ERR (No video signal input to ARPA Board for 60 seconds)

TGT SEL = 1 Setting on AUTO PLOT INITIAL SETTING menu

LOG PULSE = 200P Log pulse setting on RADAR INITIAL SETTING 1 menu

LOG SPEED = 21.0kt Calculated speed using contact closure signal

MAN SPEED = . kt Manually entered speed on the radar [FUNCTION] menuGYRO = 239.9 AD100 format gyro data being received

SET = . “Set” setting on AUTO PLOT 2 menu.

DRIFT = . kt “Drift” setting on AUTO PLOT 2 menu.

HD ALIGN = 000.0 Heading alignment value entered on RADAR INITIAL SETTING 1menu.

CPU1 COUNTER = 1636 Counts up by five every five second if CPU1 is normal.

CPU1 STATUS = 0000 Shows CPU1 status. 0 if normal.

CPU2 COUNTER = 1433 Counts up by 5 every five seconds if CPU2 is normal.

2-21

CPU2 STATUS = 0000 Shows CPU2 status. 0 if normal.

LOG SENSOR Log sensor type.

EXT SPEED IEC-61162 serial speed data being received; VTG/VHW/VBW If no serial data, xxx.x appears.

EXT COURSE IEC-61162 serial bearing data being received; VTG/VHW/VBW

:KHQ#VSHHG#GDWD#LV#EHLQJ#IHG#IURP#D#VSHHG#ORJ#RU#HQWHUHG#PDQXDOO\/# # # # # # # # # # # # # # # # # # # # # # # # # # WKH#FRXUVH#GDWD#LQ#9+:#LV#XVHG1

[INPUT SIG CHECK2](Keying sequence : [PLOT MENU] [0] [8] [0])

No. 1 = 1234 Echo count at front end processor. If “0” or “2000 or higher” isdispalyed, adjust the video level with VR103 on the ARP Board.Replace ARP Board if the value does not change at the adjustment.

7R#FKHFN#WKH#IURQW#HQG/#URWDWH#WKH#JDLQ#FRQWURO#NQRE#IURP#IXOO\#FZ#WRIXOO\#FFZ#DQG#UHDG#WKH#HFKR#FRXQW1#,I#WKH#QXPEHU#GHFUHDVHV/#WKH#IURQWHQG#IXQFWLRQV#QRUPDO1

No. 2 = 0362 Number of echoes to be received by the DSP. If the number is not the same as that of No. 1, the gain setting must be decreased. The DSP overloads receiving many echoes.

No. 3 = 0000 “0” indicates normal. For other than of “0” replace the ARP Board.

MIN HIT = 3 “3” indicates normal.

SCAN = 240 Heading signal input interval in resolution of 0.01 sec. (240=2.4 sec)

FE STATUS = 0000 Front end processor status. Normal if “0”

AUTO = 07 Number of automatically acquired targets being tracked.

MAN = 03 Number of manually acquired targets being tracked.

LOST = 01 Number of lost targets.

2-22

Block Diagram of RP BoardThe RP System program is stored on the flash POM, U3 and the program update is performed byusing the program card. The card must be inserted into the upper slot.

The CR1 on the RP board lights when the program is replaced with new one.

RP marks are generated in the following VRAMs or frames on the RP board respectively, andsent to the SPU board.

1) Track, Mark, and Depth line, etc.;

Uses frames 1 (R:U51), 2 (G:U52) and 3 (B:U53)

2) Grid; uses frames 3 (U53) and 4 (U50)

3) Counter line, and coated land area; uses frame 5 (U49)

Note that waypoint and nav line data is memorized by the SPU board.

Figure 2.13 Block Diagram of RP Board

FR2115-SME-18

Power FailU15

DIP SW P.F(Activated by H)

CPU (FR-30)

U13

OSC12.5 MHz U17

Dual Port RAMRAM8 K bytes U4

BufferU22,23,27, 30,31,32

I/O PortU21

Memory Card(4 M bytes)

IF Board14P0299

To SPU Board(Communication Data)

SRAM256 K bytes U8,9

AGDC 2Controller U15

DRAM2 M bytes U2

Flash Memory1M bytes U3

Real TimeClock U1

Addres & DataMultiplexer U28,29

BatteryBack-up U5

AGDC 2 U14

Addres & DataMultiplexerU18,19,20,24,25,26,35

VRAM 4 M bits(5 frames) U49 ‘53

Horizontal Scroll ASIC U36

Character Gen. U33

INT 2(PF)

INT 0(VSYNC)

Address &Data Bus

INT 1(DPRAM)

To SPU Board(HSYNC, VSYNC,CLK)

To SPU Board(Video Data)

x4(50 MHz)

OSC U16

32 MHz

*Working area for running program

*Memory for Track & Mark

*(not used)

CR1

2-23

INPUT/OUTPUT Data on INT Board (03P9252)

Port Name

I; input,

O: output

Signal Name Signal FormatEquipment

ConnectableRemarks

J442 (O)

J443 (O)Slave display

TRUE-TRIG, VIDEO,TRU-HD, BP

Radars havingslave func-tion

Timing between TRU-TRIG andVIDEO adjusted, HD adjusted, BP:360 pulse/rotation.

J444 (O) External ARPAARPA-TRIG, VIDEO,ARPA-HD, BP

Other make’sARPA

Timing between ARPA-TRIG and VIDEO adjusted on ARPA,HD adjusted BP:360 pulse/rotation.

J446 (I) HDG AD10 format, 25 msec

GC-1/2/6/7/8AD-10/10S/100

Generating HM, NU/TM modes,True EBL, True vector(E-PLOT),signal processing 1/2/3, Trueecho trail, ARP-26.

J448 (I) SpeedContact closure(200 or 400 pulses)

DS-30/70CI-30/60/80GP-500GP-500MK2

Ship’s speed data, TM mode, True vector (E-PLOT), signal processing 1/2/3, True echo trail, ARP-26.

J449 (O) Remote display R, G, B, H-SYNC, V-SYNC

Monitor,Printer Buffer Board (03P9229) required

J450 (I/O) Nav dataNMEA0183 V2.0(Current Loop)

I:Navaid; GP-70MK2 GP-80 GP-500MK2

O:PC

I:L/L, Speed/Course, L/L of +cursor, Dated & Time, Current , Depth, etc.

O:RSD,OSD

IEC 61162

(RS-422 Level)J452 (O) External buzzer

+5 VBuzzer 150 mA max.

J453 (I) Analog Analog data Not used

J454 (O) ARPA dataNMEA0183, V2.0(RS-422 Level)

GD-551, PC $RATTM (ARPA Tracking TargetData)

J455 (I) INS data

NMEA0183, V2.0

(Current Loop or

RS-422 Level)

INS Receiving VHW/VBW from DS-30/50 etc., HDT, HDM and HDG.

J456 (I/O) RS-232C RS-232C level PC For program update

J457 (I/O) RJ-7 RJ-7 Input/Output RJ-7

J458 (I) RJ-7TRUE-TRIG, VIDEO,TRU-HD, BP

RJ-7 or Radar havingoutput forslave display

Timing between TRU-TRIG and VIDEO adjusted, HD adjusted, BP:360 pulse/rotation.

J463 (O) I/F Power Supply +5 V, -12 V, +12 VAdditional Circuit e.g. Buffer Board

+5 V: 100 mA max.

+12 V: 200 mA max.

-12 V: 200 mA max.

2-24

Sentences Receivable at J450 on INT-9170

Data to be displayed

Sentence O S & Cursor Position

RNG &BRG toWPT

SPD Water Temp.

Water Depth

Date &Time

ARP-26SPD

ARP-26ExternalWPT

BWCBWR

X X

DPTDBTDBKDBS

X

GGAGLL X

VBWVHW

X X

MTW X

RMA X X X

RMB X

RMC X X X

VTG X X

ZDA X

2-25

Radar and ARPA output signal from INT-9170 (J442, J443 and J444)

TRIG Signal (TRIG)Polarity/Voltage : Positive, +12 V

Pulselength : 4 µs (J444)5 to 10 µs (J442/J443)

VIDEO Signal (VIDEO)Polarity/Voltage : Negative, 4 Vpp

Characteristic : Input of amplifier

GAIN/STC : Not controlled

BEARING Signal (BP)Pulse : 360 pulses/one ant. rotation

Polarity/Voltage : Positive, +12 V

Duty Cycle : 50% 20%

HEADING Signal (HD)Polarity/Voltage : Negative, +12 to 0 V

Timing : Negative going edge

2-26

Monitor signal from J449 (requires buffer circuit)

1. CRT required (non-interlace)

2. Video signal

Video signal

63.974 kHz (15.63 us),1696 dots

0.59 us, 64 dots

11.80 us,1280 dots

1.18 us,128 dots

2.06 us, 224 dots

Video signal

FR2115-SME-11

60.013 Hz (16.66 ms),1066 dots

16 us, 1 dots

16.00 ms,1024 dots

47 us, 3 dots

593 us, 38 dots

H - sync signal

V-sync signal

370 mm(1280 dots)

295 mm(1024 dots)

275 mm(720 dots)

2-27

Power Supply Circuit (DC)

DC PWR Board (03P9246)

The PWR board contains a main-inverter, a sub-inverter, and protectors. The main-inverterproduces +24 V and +32 V (for scanner motor), while the sub-inverter produces –12 V, +12 V,+32 V, and +140 V from +24 V, output of the main-inverter. +5 V is generated by chopping +24V. Power fail (P.F.) signal generator outputs “High” signal normally and “Low” signal when themain-inverter fails. +24 V is adjusted by VR51.

Main-inverter:

With the POWER switch pressed, +12 V regulator, Q1 turns on, and over- and low-voltageprotectors and switching regulator controller are powered up. The protector U1 activates whenship’s main is lower than 19.5 VDC and higher than 42 to 46 VDC. The switching frequency isadjusted by VR1.

Sub-inverter:

The sub-inverter produces –12 V, +12 V, +32 V, and +140 V from +24 V, the output of themain-inverter. These lines are not stabilized, but the +24 V line is stabilized by the main-inverter.The switching frequency is adjusted by VR71.

Protector:

Over-current detector U91in the scanner motor power line (ANT MOTOR line) activates whenthe current is 6 A or more for 0.8 seconds. The short circuit protector U72 operates when +140 Vline is short-circuited. The output from the U72 is latched by Q33 and then send to the switchingregulator controller U11.

Power for Scanner Motor:

Rectified +32 VDC is applied to the scanner motor through the ANT MOTOR line, MOTOR(+)and MOTOR(-). The F/V (Frequency to Voltage) converter U93 receives bearing pulses (BP)from the scanner unit and outputs DC signal depending on the frequency received. Thecomparator Q94 compares the output of the F/V converter with the antenna speed data, 24 rpmor 42 rpm. If the antenna speed is lower or higher than the rating, the comparator outputs thesignal to control the scanner motor supply voltage. Thus, the motor rotates stably.

The VR91 adjusts the antenna rotation to 24 rpm (no adjuster for 42 rpm). The number of theantenna rotation can be read on the self-test menu.

The table below summarizes how to select the antenna speed data.

Rotation JP91 JP92 R98 Menu selection

24 rpm Removed Removed 4.7 k ohms Disregarding menu setting

42 rpm Removed Connected 1.2 k ohms Ant. revolution, Radar 3 menu; H

2-28

1,2,

3,4

5.6,

7,8 1 3

6B

.P24

rpm

(144

Hz)

48 r

pm(2

50 H

z)

+14

0 V

+32

V +

12 V

-12

V

J101

J103

T1

DC

PW

R B

oard

(03

P92

56)

FR

2115

-SM

E-2

7B

4,5

+5

V

J102

Inpu

t F

ilter

C1,

C2,

C3

Sm

ooth

ing

Circ

uit

Shi

p's

Mai

ns24

/32

Vdc

Pow

erS

witc

h

+12

VR

egul

etor

Q

1

Ove

r an

d lo

wV

olta

ge

Pro

tect

or

U

1

Sw

itchi

ngR

egul

ator

Con

trol

ler

U

11

Driv

er

Q11

~14

P.F.

Sig

.G

ener

ator

Q81

,U33

Vol

tage

Det

ecto

r

U51

Vol

tage

P

rote

ctor

Latc

h

Q33

Mai

n-in

vert

er

+32

V

CR

52

+24

V

CR

51

Cho

pper

Con

trol

U92

Cho

pper

CR

94,Q

97

Com

para

tor

Q94

F/V

Con

vert

er

U93

Sof

t Sta

rtC

ontr

ol

Ove

rcur

rent

Det

ecto

r

U91

Cho

pper

Cho

pper

Con

trol D

river

Q71

,72

Sho

rt-c

ircui

tP

rote

ctor

U72

Sw

itchi

ng R

egul

ator

Con

trol

ler

U

71

T71

Sub

-inve

rter

Low

/Hig

h V

olta

ge S

ig.

5A

NT.

SP

EE

D*M

enu-

Sel

ectio

n H

ight

Spe

ed :

H

J103

7A

NT.

ON

/OF

F*T

X :

H S

T-B

Y :

L

J103

1,2

3,4

MO

TOR

(+)

MO

TOR

(-)

J103

J105

10P.

FJ1

05

VR

1(M

ain-

inve

rter

fr

eq a

djus

tor)

VR

51(+

24 V

adj

usto

r) VR

71(S

ub-in

vert

er fr

eq a

djus

tor)

CR

81~

86

VR

91(2

4 rp

m a

djus

tor)

U61

,CR

61

Ove

rcur

rent

Det

ecto

r

U

81+

24 V

J107

1

H o

r L

2-29

Power Supply Circuit (AC)AC PWR Board (03P9245)

The PWR board contains a main-inverter, a sub-inverter, and protectors. The main-inverterproduces +24 V and +32 V (for scanner motor), while the sub-inverter produces –12 V, +12 V,+32 V, and +140 V from +24 V, output of the main-inverter. +5 V is generated by chopping+24V. Power fail (P.F.) signal generator outputs “High” signal normally and “Low” signalwhen the main-inverter fails. The RP data is backed-up when the P.F. signal is received. +24 V isadjusted by VR51.

Main-inverter:

With the POWER switch pressed, +12 V regulator, Q1 turns on, and over-voltage and low-voltage protector, relay drive circuit, and switching regulator controller are powered up. Theprotector U1 activates when ship’s main is lower than 85 VAC and higher than 135 to 150 VAC.If ship’s mains is higher than 135 to 150 VAC, the relay in the input line, K1 is turned off by thesignal from the protector U1, and no power is supplied to the main-inverter. The switchingfrequency is adjusted by VR1. A rush current protector Q1 and R2 prevents rush current frombeing flow into smoothing capacitors C11 and C12. When the smoothing capacitors are chargedto the rated voltage, the main inverter starts oscillating. The output of the T1 turns on triac Q1and the R2 10 ohms, 5 W is short-circuited. Ship’s mains 110 VAC or 220 VAC is jumperselectable as show in the table below. Smoothing capacitors C11 and C12 are charged by 100 to170 VDC respectively. +5 V is generated from 24 V by a chopper IC.

Ship’s Mains JP1 JP2 JP3 JP4 Fuse

110 VAC Connected Connected Connected Removed 10 A

220 VAC Removed Removed Removed Connected 5 A

Sub-inverter:

The sub-inverter produces –12 V, +12 V, +32 V, and +140 V from +24 V, output of the main-inverter. These lines are not stabilized, but the +24 V line is stabilized by the main-inverter. Theswitching frequency is adjusted by VR71.

Protector:

Over-current detector U91in the scanner motor power line (ANT MOTOR line) activates whenthe current is 6 A or more for 0.8 seconds. The short circuit protector U72 operates when +140 Vline is short-circuited. The output from the U72 is latched by Q33 and then send to the switchingregulator controller U11.

Power for Scanner Motor:

Rectified +32 VDC is applied to the scanner motor through the ANT MOTOR line, MOTOR(+)and MOTOR(-). The F/V (Frequency to Voltage) converter U93 receives bearing pulses (BP)from the scanner unit and outputs DC signal depending on the frequency received. Thecomparator Q94 compares the output of the F/V converter with the antenna speed data, 24 rpmor 42 rpm. If the antenna speed is lower or higher than the rating, the comparator outputs thesignal to control the scanner motor supply voltage. Thus, the motor rotates stably. The VR91adjusts the antenna rotation to 24 rpm (no adjuster for 42 rpm). The number of the antennarotation can be read on the self-test menu. The table below summarizes how to select the antennaspeed data.

Rotation JP91 JP92 R98 Menu selection

24 rpm Removed Removed 4.7 k ohms Disregarding menu setting

42 rpm Removed Connected 1.2 k ohms Ant. revolution, Radar 3 menu; H

2-30

1,2

5.6 7 8

6B

.P24

rpm

(144

Hz)

48 r

pm(2

50 H

z)

+14

0 V

+32

V +

12 V

-12

V

J101

J103

T1

AC

PW

R B

oaed

(03

P92

45)

FR

2115

-SM

E-2

7

4,5

+5

V

J102

Rus

hC

urre

ntP

rote

ctor

Q1

Rel

ay

K

1

Inpu

t F

ilter

L1,C

3,C

4

Sm

ooth

ing

Circ

uit

Q

1C

R2

Inpu

tvo

ltage

Sel

ecto

r

Shi

p's

Mai

ns10

0/11

0/11

522

0/23

0 V

AC

Pow

erS

witc

h

+12

VR

egul

ator

Q

21

Ove

r -a

nd

low

- Vol

tage

P

rote

ctor

U1

Rel

ayD

river

Q

26 Vol

tage

P

rote

ctor

Latc

h

Q

24

Sw

itchi

ngR

egul

ator

Con

trol

ler

U

31

Driv

er

Q11

,12

P.F.

Sig

.G

ener

ator

Q81

,U33

Vol

tage

Det

ecto

r

U51

Vol

tage

P

rote

ctor

Latc

h

Q

36

Mai

n-in

vert

er

+32

V

CR

52

+24

V

CR

51

Cho

pper

Con

trol

U

92

Cho

pper

CR

94,Q

97

Com

para

tor

Q

94

F/V

Con

vert

er

U93

Sof

t Sta

rtC

ontr

ol O

verc

urre

ntD

etec

tor

U

91

Cho

pper

C

hopp

erC

ontr

ol Driv

er

Q71

,72

Sho

rt-c

ircui

tP

rote

ctor

U

72

Sw

itchi

ng R

egul

ator

Con

trol

ler

U

71

T71

Sub

-inve

rter

Hig

h V

olta

ge S

ig.

Low

Vol

tage

Sig

.

5A

NT.

SP

EE

DM

enu-

Sel

ectio

nH

ight

Spe

ed :

H

J103

7A

NT.

ON

/OF

FT

X :

HS

T-B

Y :

L

J103

1,2

3,4

MO

TOR

(+)

MO

TOR

(-)

J103

J105

10P.

FJ1

05

VR

1(M

ain-

inve

rter

fr

eq a

djus

tor)

VR

51(+

24 V

adj

usto

r) VR

71(S

ub-in

vert

er fr

eq a

djus

tor)

CR

81~

86

VR

91(2

4 rp

m a

djus

tor)

U61

,CR

61

ON

: +

12 V

ON

: +

12 V

110

or 2

20 V

AC

H o

r L

Ove

rcur

rent

Det

ecto

r

U81

+24

V1

J107

2-31

2.3 Scanner Unit

GeneralNew cast aluminum scanner gearbox and new series of streamlined antenna are employed on theFR-2115 and FR-2125 radars. These are not compatible with the traditional Furuno scannergearbox and radiator used for a long period. The mounting dimensions are remained unchanged.

Radiator

A feeder waveguide is built-in the radiator XN-12 AF, XN-20 AF and XN-24 AF for ease-installation. The XN-20 AF and XN-24 AF are the same electrical characteristic with XN-3 Aand XN-4 A respectively.

Gear Box

The mounting dimensions, the size of the gear box, and cabling layout have not been changedfrom the traditional Furuno radars. Changed is the radiator mounting bracket for a new radiator.The gear box can be equipped with a motor of either 24 rpm or 42 rpm type.

RF Unit

The 10 kW and 25 kW RF units are the same in size. The magnetron of 25 kW is a new type,smaller in size. The RF modulator generates short pulse 1 (S1) which has pulselength of 0.07 usand pulse repetition rate of 3000 Hz. Traditionally, the S1 is 0.08 us and 2200 Hz.

The magnetron current monitor circuit ensures a defective magnetron being found easily. Whenthe magnetron is short- or open-circuited, the magnetron current detector reads 1 to 1.5 V.

2-32

+5 V Regulator

U609

TP602

Comparator

U9

Trigger1-4

TX OFFTX PROTECT Relay

K1

Regulator

U1

Driver

Q5 Q20

on by S1for reducing MB.

on by S1for PWR up

Buffer

U10

FETQ1 Q4

VTRIG

B.W. Selector

U604TP604

Gate PulseGenerator

U611

TP605 (+7 V)TP606 (-9 V)TP607 (+9 V)

TP608

MBS

Q603, U612

MIC

Motor

B801

U801

Magnetron

V801

Driver

Q1 Q12

TX PulseGenerator

U4(PLD)

Regulator

U7, Q5

BW

Radiator

Circulator

RXTX

HY801

DiodeLimiterCR880 Waveform

Reshaper,Amp.

BEARINGSIG. GEN. BoardMP-3795

MagnetU902

Switching

Q901, Q902

Photo-InterrupterTimingDisk

U901

Reed SwS801

CascadeAmplifier

Q601-Q602

B.W. Adjustor(Long ranges)

T603, T604

Log Amp.U602, U610,U601

Buffer Amp.

Q627, Q628

Amp.Mixer

Q625, Q626

Log Amp.

U603

Tuning Circuit

Q614, Q615

Q609, Q610TP603

TP601 (output of U601)

HD FL

SYNC P

IF

TX-TRIG

(H)(12 Vdc)

Heater VoltageCheck

IFoutput

Tuning Indicator(TUNING IND.)

R. MONI.

Heading

Bearing

Magnetron

Trigger1-4

Variable

MODULATOR Board : 03P9244 A(10 kW) 03P9244 B(25 kW)

TRIGGER Board : 03P9243 A(10 kW)

03P9243 B(25 kW)

IF Amp. Board 03P9232

Buffer Amp.

Q619, Q620

+12 V

TUNING CONT.

MBS L

P/L A,B,C

+12 V

VR1( )

S1 pulse

14 19 V

M1/M2

VR1

Magnetron

*25 kW: 7.4 8.1 Vdc(L) 10 kW: 4.6 5.3 Vdc(L)

11% of accuracy

TX-HV330 V(10 kW), 530 V(25 kW)

T80110 kW : RT-902525 kW : RT-9023

(Short ranges)

MBS T

MBS SIG.

Block Diagram of Scanner Unit

FR2115-SME-27A

24 rpm(D8G-516)42 rpm(D8G-571)

RU-9253or

RU-9371

10 kW : MG524125 kW : MG5436

OSCU5

48 MHz

Signal is generated when 530 V is supplied to 10 kW RF unit.

P/L

25 kW: 8.2 8.4 Vdc(S1)10 kW: 7.4 7.6 Vdc(S1)(6.3 Vdc supplied to magnetron, voltage drop by pulse trans.)

4.5 5Vpp

A

HLLHH

LS1S2M1M2M3L

LLLHHH

LLHLLH

B C

CascadeAmplifier

C B A

3-1

Hazardous Voltage

This equipment uses high voltage electricity which can SHOCK, BURNor cause DEATH.

Always make sure the electrical power is turned off before attempting tochange a component or inspecting the inside of the equipment. Aresidual charge may exist in capacitors, even with the equipment turnedoff. Always short all supply lines to the chassis with an insulatedscrewdriver or a similar tool before touching the circuit.

Working on the Scanner Unit Mast

Work on the scanner unit mast is dangerous, and doubly so if the properprecautions are not taken.

1. Post an appropriate warning sign near the display unit to indicate thatwork on the scanner unit is being performed, to prevent accidentalapplication of the power to the scanner unit.

2. Wear a safety helmet and always be aware of where the scannerradiator is.

Chapter 3. ADJUSTMENT

3-2

3.1 Adjustment (Display Unit)

Location of Major parts

Figure 3.1 Display Unit, front view

Figure 3.2 Display Unit, inside view

Control panel

Handle

Stay

This cover is removedto gain access to SPU,ARP, and RP Boards.

Display pedestal

3-3

Figure 3.3 Display pedestal, cover removed

Figure 3.4 Display pedestal, W/O GYRO CON Board

SPU Board(03P9253)

ARP Board(18P9002B)

RP Board(14P0298)

TX-HV Board(HV-9017)

GC-8 Board(64P1106)

DTB-2 (T.B.)

Mother Board(03P9251)

INT Board(03P9252)

TX HV Fuse(F3 : 0.5 A)

SPU BoardVideo LevelAdjuster :R140

Fuse for P.M.(F402 : 0.5 A)

Fuse for P.M.(F401 : 0.5 A)

PM optionalBoard(03P9225)

RF VideoLeveladjustor :R21

ExternalVideo Leveladjustor :R134

3-4

Figure 3.5 Display Unit, top view, drawing forward

Figure 3.6 Display pedestal, for side, shield cover removed

PTU Board(AC : 03P9245, DC : 03P9246)Shield cover removed

Power Switch forMaintenance

Fuse (F1)

Fuse (F2)

3-5

Figure 3.7 Display Unit, top view, cover removed

Adjustment of CRTThe CRT is adjusted by pressing the buttons on the CRT ADJ Board. The buttons locate asshown in the figure below. The LED D701 lights normally.

Figure 3.8 Adjusters on the CRT ADJ Board

MENU button: turns on/off the menu.INPUT button: selects Input 1 or Input 2 (not used).SEL+/SEL- buttons: selects items (+: moves cursor right or downward, -: moves cursor left or upward)ADJ+/ADJ- buttons: expands (+) or shrinks (-) the screen.

1) Brightness and Contrast

SCREEN FOCUSIF3-A10 Board(UBH188)

VIDEO Board(PBH173)

SOCKET Board(UBH182)

DEGAUSS Board(PDM9025)

INT BoardPBH183-0

HPOSIUnder the cover

MAIN Board(PBH172-0)

CRT ADJ Board(PBH132-1)

HV ADJ

3-6

2) Display Size

Press the MENU button on the CRT ADJ Board, PBH132-1 and the following menu willappear on the screen.

1) Set the radar to TX.

2) Select the background color to blue : [RADAR MENU] [0] [2].

3) Check items 1) to 5) right for rating.

4) Adjust the CRT, if necessary.

How to change meun setting to default.

Keep pressing the MENU button until UTILITY MOD menu appears.

Press SEL+ once to select "INITIALIZE".

Press MENU.

Within 5 seconds after the message INITIALIZE MODE CAUTION REPLACE FACTORY SETTING appears, press ADJ+.

FR2115-SME-62

1) Radar display area must be 280 3 mm.

2) Display area must be centered.3) Heading Line must be 0 1 .

4) Pincushion must be within 3 mm.

5) D701 must be on.

1.0

3 mm

Steps Ratings

280 mm 3 mm

3-7

Location of parts on SPU ��03P9253��Board

Test points and Ratings

TP No. Signal Rating Condition

TP1 GND

TP2 GND

TP3 TUNE IND Approx. 1 to 3.2 VDC

TP4 RF VIDEO 3.9 to 4.1 Vpp

TP5 TX TRIG

TP6 SAMPL T

4 V to 12 V, positive, approx. 3.5 to 15 usS1: 3005 to 3976 Hz, S2: 2790 to 3505 HzM1: 1502 to 1602 Hz, M2: 976 to 1041 HzM3: 976 to 1041 Hz, L: 583 to 621 Hz

TX

(except for maximumrange)

TP7 H SYNC Approx. 64 kHz

TP8 V SYNC Approx. 60 Hz

TP9 TUNE V Approx. 2 V to 32 V TX

TP11 VIDEO Approx. 5 V TX

TP12 VIDEO LEVEL 3.9 to 4.1 Vpp, negative, main bang levelAdjusted by R140

Range: 12 nmIR: OFFSTC: fully ccwFTC: fully ccw

TP13 STC CURVE 4 us: 0.8 to 1.1 V, 10 us: 1.3 to 1.6 V20 us: 1.9 to 2.3 V, 40 us: 2.7 to 3.0 V60 us: 3.3 to 3.7 V, 90 us: 4.1 to 4.5 V120 us: 4.3 to 4.7 V

Ant. Height: 10 mRange: 12 nmGain: fully cwSTC: fully cw

TP1 CR8 CR7 CR6 CR5 CR4 CR3 CR2 CR1

TP11

TP13

TP12

TP5

TP6

TP9

TP8 TP7 R140 TP4 TP3 TP2

3-8

Location of Parts on ARP ��18P9002��Board


TP Signal Rating Condition

TP1 GND

TP2 VIDEO Approx. 5 Vpp (main bang level)

TP3 GND

TP4 BP INPUT Approx. 10 to 12 V

TP5 VIDEO INPUT Approx. 4 Vpp

TP6 OFFSET (-)

TP7 OFFSET (+)

0.09 to 0.13 VDC, adjusted by R104

TX

TP8 GND

TP9 QV OUTPUT Approx. 4 V(main bang level)

TP10 +5 V 4.8 to 5.2 V

TP11 -12 V -11.0 to -13.0 V

TP12 +12 V 12.1 to 13.5 V

R103 CR14 CR13 CR16 CR15 CR12 CR11 CR10 CR9 CR17 CR1

TP1

S1

ROM (U3)

TP12 TP10 TP4 TP3 TP2 ROM (U40)

R104

TP7

TP6

TP8

ROM(U64)

JP11

TP9

TP11

3-9

Location of Parts on RP ��14P0298��Board

CR1 S1

Battery(BT1)

Flash ROM(U3)

3-10

Location of Parts INT Board ��03P9252��



TP1 VIDEO(RF Input)

Approx. 4 Vpp, main bang level TX

TP2 GND

TP3 VIDEO(EXT Input)

Approx. 1 to 3.2 VDC

TP4 ANALOG (Input) Same as output of connected equipment

TP5 GND

TP6 VIDEO (Output) 3.9 to 4.1 Vpp, main bang level

RF video output adjusted by R21EXT video output adjusted by R134

Selected thru menu

TP6

R21

J450

J445

TP2J454

J448J469J455

J446

J468

J466

J467

J462

J445

J456

J465

TP1

J457

J442

J458

J443

TP3

J453

J444

J451

J463

J471

R151 R153 TP4 J452 TP5 R134

3-11

Location of Parts on GYRO Board ��64P1106��



TP1 +5 V 5.19 to 5.21 VDC, adjusted by R42

JP1

F1

F2

F3

F4

CR21

JP7

JP3

JP5

JP2

JP4

R42

CR22

TP1

JP8

BT1

3-12

Location of Parts on PTU Board, for DC set ��03P9246��



J104

# 1(+) & # 3(-)

+140 V 138 to 142 VDC, adjusted by VR51

J105

# 1(+) & # 7(-)

+32 V 27.0 to 35.0 VDC TX

J105

# 2(+) & # 7(-)

+12 V 12.1 to 13.5 VDC

J105

# 4(+) & # 7(-)

+5 V 4.8 to 5.2 VDC

J105

# 9(+) & # 7(-)

-12 V -11.0 to -13.0 VDC

TP3 or TP4

& Chassis

Inverterfreq., U31

42.75 to 47.25 kHz, adjusted by VR1

TP1 or TP2

& Chassis

Inverterfreq., U71


J103

# 1(+) & # 3(-)

MOTOR (+)and (-)

Approx.24 rpm

If less than 24 rpm, turn VR91 cw.If more than 24 rpm, turn VR91 ccw.

No adjuster for 42 rpm

Test display showsantenna speed.

JP91

JP92

J105

VR1

VR51

J104

J103

VR91 VR71 CR12 CR11

TP2

TP1

TP4

TP3

3-13

Location of Parts on PTU Board, for AC set ��03P9245��



J104

# 1(+) & # 3(-)

+140 V 138 to 142 VDC, adjusted by VR51

J105

# 1(+) & # 7(-)

+32 V 27.0 to 35.0 VDC TX

J105

# 2(+) & # 7(-)

+12 V 12.1 to 13.5 VDC

J105

# 4(+) & # 7(-)

+5 V 4.8 to 5.2 VDC

J105

# 9(+) & # 7(-)

-12 V -11.0 to -13.0 VDC

Q31 Collector& Chassis

Inverterfreq., U31


FL71&Chassis

Inverterfreq., U71


J103

# 1(+) & # 3(-)

MOTOR(+)

And (-)

Approx. 24 rpm

If less than 24 rpm, turn VR91 cw.If more than 24 rpm, turn VR91 ccw.

No adjuster for 42 rpm

Test display showsantenna speed.

JP91

VR91

JP92

J105

VR1

VR51

J104

VR71

J103

CR12 CR11 JP3 JP2

JP1

3-14

Location of Parts on HV-9017 Board



TP1 34.7 to 35.3 VDC, adjusted by VR1 TP1 and TP2

TP2 0 V line

TP3 Sub inverterswitching freq.

42.75 to 47.25 kHz TP3 and TP2

TP4 Main inverterSwitching freq.

42.75 to 47.25 kHz TP4 and TP2

J482 #1 &Chassis

TX HV 10 kW: 310 to 350 V25 kW: 520 to 580 V

TX HV alsomeasurableat TB2 #1 in displaypedestal

JP1

J482

CR21,RED

CR23, GRN

VR1

TP1 TP2 TP3 TP4

J481 JP2

3-15

3.2 Adjustment (Scanner Unit)

Figure 3.9 Scanner Unit, side view (XN-20AF�

Figure 3.10 Antenna radiator, bottom view (XN-20AF)

Figure 3.11 Scanner Unit, top view. Antenna radiator removed

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3-16

Figure 3.12 Scanner Unit, stern side, cover removed

Figure 3.13 Scanner Unit, stern side, cover and RF module removed

Figure 3.14 Scanner Unit, fore side, cover removed

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#� ��

'(")* ��

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3-17

FR-2125��RTR-063��

Figure 3.15 RF module, top view

Figure 3.16 RF module, bottom view

RFC Board(03P9243B)

VR1 on MODULATORBoard (03P9244B) formagnetron currentadjustment

Circulator(RC-3686)

MIC(RU-9253/9371)

IF Amp Board(03P9232)

Magnetron(MG5436)

MODULATORBoard(03P9244B)

PulseTransformer(RT-9023)

3-18

Location of Parts on IF AMP ��03P9232��Board



TP601 Output of U601 Factory-use


TP603 TUNING IND. 1.5 to 3.5 VDC

TX

TP604 MBS 2.2 to 2.4 V, positive, 0.07 to 0.55 us TX (Varies accordingto MBS T and MBS Lsettings)

TP605 +7 V +5.7 to +6.7 VDC

TP606 -9 V -8.7 to -9.3 VDC

TP607 +9 V +8.7 to +9.3 VDC

ST-BY


J611 # 3& Chassis

TUNING IND. 1.5 to 3.5 VDC TX, long range,Maximum tuningindication

J611 # 2(+)

& # 10(-)

R.MONIT 1.5 to 3.5 VDC ST-BY, short range

VIDEO Output of U602 White noise level, factory-adjusted withVR601

TX

(Field-adjustmentprohibited!!)

VR601 TP606

TP607 TP605 TP603 TP608 TP602

TP604

3-19

Location of Parts RFC ��03P9243B��Board



J801 # 12(+)& # 11(-)

MAG HEATER. 8.2 to 8.4 VDC(S1) , adjusted by VR16.5 to 7.5 VDC(L)

ST-BY

TX

VR1

3-20

Location of Parts on MODULATOR ��03P9244B��Board



03P9243,J801 # 13(+)& Chassis

MAG CUR. Less than 0.15 V(ST-BY)7.4 to 8.1 VDC(Long range, TX),adjusted by VR1

CAUTION: If the magnetron current is not set to within the rating, the magnetron will be damaged.

Q4 Q3 Q2 Q1

VR1

3-21

FR-2115��RTR-062��

Figure 3.17 RF module, top view

Figure 3.18 RF module, bottom view

Circulator(RC-3686)

MIC(RU-9253/9371)

IF Amp Board(03P9232)

RFC Board(03P9243A)

VR1 on MODULATORBoard (03P9244A) formagnetron currentadjustment

Magnetron(MG5241)

MODULATORBoard(03P9244A)

PulseTransformer(RT-9025)

3-22

Location of Parts on IF AMP ��03P9232��Board





TP603 TUNING IND. 1.5 to 3.5 VDC

TX

TP604 MBS 2.2 to 2.4 V, positive, 0.07 to 0.55 us TX

(Varies according toMBS T and MBS Lsettings)

TP605 +7 V +5.7 to +6.7 VDC

TP606 -9 V -8.7 to -9.3 VDC

TP607 +9 V +8.7 to +9.3 VDC

ST-BY


J611 # 3

& Chassis

TUNING IND. 1.5 to 3.5 VDC TX, long range,Maximum tuningindication

J611 # 2(+)

& # 10(-)

R.MONIT 1.5 to 3.5 VDC ST-BY, short range

VIDEO Output of U602 White noise level, factory-adjusted withVR601

TX

(Field-adjustmentprohibited!!)

VR601 TP606

TP604

TP607 TP605 TP603 TP608 TP602

3-23

Location of Parts on RFC ��03P9243A��Board



J801 # 12(+)& # 11(-)

MAG HEATER. 7.4 to 7.6 VDC(S1), adjusted by VR1 ST-BY

VR1

3-24

Location of Parts on MODULATOR ��03P9244A��Board



03P9243

J801 # 13

& Chassis

MAG CUR. Less than 0.15 V(ST-BY),

4.6 to 5.3 VDC(Long range, TX),

adjusted by VR1

CAUTION: If the magnetron current is not set to within the rating, the magnetron will be damaged.

Q4 Q3 Q2 Q1

VR1

4-1

Hazardous Voltage

This equipment uses high voltage electricity which can SHOCK, BURN orcause DEATH.

Always make sure the electrical power is turned off before attempting tochange a component or inspecting the inside of the equipment. Aresidual charge may exist in capacitors, even with the equipment turnedoff. Always short all supply lines to the chassis with an insulatedscrewdriver or a similar tool before touching the circuit.

Working on the Scanner Unit Mast

Work on the scanner unit mast is dangerous, and doubly so if the properprecautions are not taken.

1. Post an appropriate warning sign near the display unit to indicate thatwork on the scanner unit is being performed, to prevent accidentalapplication of the power to the scanner unit.

2. Wear a safety helmet and always be aware of where the scannerradiator is.

Chapter 4. MAINTENACE

4-2

4.1 DIP Switches DIP switch S1 on the ARP Board (18P9002) and RP Board (14P0298) changes the specifications of radars.

Figure 4.1 Display pedestal, inside view

S1 Description Default

#1 Memory clear OFF #2 Not used OFF #3 Not used OFF #4 Not used OFF

S1 Description Default

#1

Baud rate of ARPA output data OFF:4800 bps, ON:9600 bps

OFF

#2 Tracking model OFF:A TRK 88* ON:A TRK 94

OFF

#3 Not used OFF

#4 EEPROM memory clear at power-on

OFF

*1 A TRK94 has faster tracking speed than A TRK88, but result in unsteady vector and track.

14P0298 Board

18P9002 Board

S1

ON

OFF

#4 #1

14P0298(RP)

S1

ON

OFF

#4 #1

18P9002B(ARP)

4-3

4.2 Jumper Settings

Board Specification Jumper Settings Remarks

03P9245A

(PTU Board, AC)

100 VAC, 24 rpm JP1: Yes

JP2: Yes

JP3: Yes

JP4: No

JP91: No

JP92: No

R98:4.7 k ohms

03P9245C

(PTU Board, AC)

100 VAC, 42 rpm JP1: Yes

JP2: Yes

JP3: Yes

JP4: No

JP91: No

JP92: Yes

R98: 1.2 k ohms

03P9245D

(PTU Board, AC)

220 VAC, 24 rpm JP1: No

JP2: No

JP3: No

JP4: Yes

JP91: No

JP92: No

R98:4.7 k ohms

03P9245F

(PTU Board, AC)

220 VAC, 42 rpm JP1: No

JP2: No

JP3: No

JP4: Yes

JP91: No

JP92: Yes

R98: 1.2 k ohms

03P9246A

(PTU Board, DC)

24 VDC, 24 rpm JP91: No

JP92: No

R98: 4.7 k ohms

03P9246C

(PTU Board, DC)

24 VDC, 42 rpm JP91: No

JP92: Yes

R98: 1.2 k ohms

HV-9017A 10 kW (FR-2115) JP1: 300 V

JP2: 330 V

HV-9017B 25 kW (FR-2125) JP1: 500 V

JP2: 330 V

INS RX (C) fromat J468: J1-J2

INS RX (H) fromat J469: J1-J2

J1-J2: Current loop

J3-J4: RS-422

03P9252

(INT Board)

ANALOG input level J471: J1-J2 J1-J2:L, J3-J4:M, J5-J6:H

Battery connection JP1: Yes03P9253

(RP Board) not used JP2: No

4-4

4.3 LED Status

LED status symbols: �: OFF ; �: Blinking ; �: ON

Board LED No. NormalStatus

CheckItem Remarks Location of LEDs

CR1 (YLW) � KEY TXCR2 (YLW) � NAV TX Blinks every 3 seconds.CR3 (YLW) � RJ7 TX Blinks when RJ-7 is connected.CR4 (YLW) � INS TX Not usedCR5 (YLW) � KEY RX Lights momentary when key is

pressed.CR6 (YLW) � NAV RX Blinks when receiving nav

data.CR7 (YLW) � RJ7 RX Blinks when RJ-7 is connected.

SPUBoard(03P9253)

CR8 (YLW) � INS RX Blinks when receiving navdata.

CR5 CR1CR2CR3CR4

CR6CR7

FR2115-SME-25A

CR8

RPBoard(14P0298)

CR1 (YLW) � CPU CLK Blinks every second.CR1

FR2115-SME-25B

CR1 (YLW) � CPU CLK Blinks at irregular intervalCR9 (RED) � HDG

alarmLights if heading data is notreceived for more than 10 sec.

CR10 (RED) � BPalarm

Lights if bearing data is notreceived for more than 10 sec.

CR11 (RED) � Videoalarm

Lights if video data is notreceived for more than 60 sec.

CR12 (RED) � TRIGalarm

Lights if trigger is not receivedmore than 10 sec.

CR13 (YLW) � or � TRIGfreq.

Lights if trigger PRR is lessthan 1250 Hz (S2).

CR14 (YLW) � TRIGfreq.

Not used

CR15 (RED) � Gyroalarm

Lights if gyro data is notreceived for more than 10 sec.

CR16 (RED) � Log alarm Lights if log data is not receivedmore than 60 sec.

CR17 (YLW) � DSP CLK Blinks every 2 seconds

ARPBoard,AC(18P9002)

CR32 (YLW) � or � FE echodata

Lights when echo data isreceived.

CR15 CR9CR10CR11CR12

CR1

CR16CR32

CR17

CR13CR14

FR2115-SME-24A

CR11 (RED) � Over-volt. Lights when ship’s mainsexceeds the rating.

PTUBoard,AC(03P9245)

CR12 (RED) � Over-cur. Lights if over-current isdetected.

CR11

FR2115-SME-25C

CR12

CR11 (RED) � Over-volt.PTUBoard,DC(03P9246) CR12 (RED) � Over-cur.

Same as above

4-5

LED status symbols: �: OFF ; �: Blinking ; �: ON

Board LED No. NormalStatus

CheckItem Remarks Location of LEDs

CR21 (RED) � Over-cur.TX-HVBoard(HV-9017) CR23 (GRN) � -12 V

Lights when over-current isdetected.OFF when the line is abnormal.

CR21

FR2115-SME-25D

CR23

CR21 (GRN) � CPUMonitor

GYROBoard(64P1106)

CR22 (GRN) � +5 V

Goes off or on if output isabnormal.

OFF when the line is abnormal.

CR21

FR2115-SME-25E

CR22

4-6

4.4 Self-test

Test MenuPress [RADAR MENU], [0], [0], [0], [3], and [ENTER] in this order, and the self-test resultdisplay will appear after several seconds. Figure 4.2 shows the self-test result display. If anyerror has been found in circuitry, NG appears instead of OK. The self-test is carried out at everypower-up, not when the keys are pressed. If the self-test detects an error, the message SYSTEMFAIL appears at the lower right of the screen.

Figure 4.2 Self-test Result Display

FR-2105 TEST

PROGRAM NO ROM RAM CRAM DIPSWMAIN 0359149101 OK OK 1234

ARP 1859038104 OK OK OK 0000DSP 1859039101 OK OK OKRP 0359150101 OK OK OK 0000

DRAM OKRP BOARD BAT OKRP CARD 1 OK CARD 2 OK CARD 1 BAT OK CARD2 BAT OK

ANTENNA SPEED 0.0RPMTRIG FREQ 0HzMAG CURRENT 4.9VR. MONITOR 1.8VTUNE IND 2.5V

ROM Test RAM Test CRAM Test

Radar system program number (MAIN board)

ARP program number (ARP board)

RP program number (RP board)

EBL test

Test for PM and Degauss switches

Key and knob test(BRILLIANCE, A/C RAIN, A/C SEA, and GAIN knobs are not tested.)

Trackball test

251008

002123

VRM test

FR2115-SME-45

CH1 $GPGLL,3445.000, N, 13521.000,E <CR> <LF>

IEC61162 signal input to J450 is monitored.

DIP switch setting, S1 on ARP board (#1 to #4 from left)0 : on, 1 : off

DIP switch setting, S1 on RP board0 : on, 1 : off

4-7

The ICs checked in the diagnostic test are shown in the table below. For�NG,�suspect faulty IC.

Note that parts level replacement is not possible; replace at board level.

Check Item ROM RAM CRAM DRAM Board to be checked

MAIN U11 U5, U7� �

03P9253

ARP U3 U9, U10 U4, U11�

DSP U40 U33, U36,U38, U39

U21, U22�

18P9002

RP U3 U8, U9 U4 U2 14P0298

Check Item Parts to be checked Remarks

RP BOARD BT Battery BT1 on 14P0298 Replace 14P0298.

RP CARD 1 Card or pcb related to upper card slot

CARD 2 Card or pcb related to lower card slot

Replace 14P0299 (CARD I/F) or14P0298 (RP).

CARD 1 BAT Card or its battery in upper card slot

CARD 2 BAT Card or its battery in lower card slot

Replace memory card.

ANTENNASPEED

Refer to P2-14 Replace motor or related pcb.

TRIG FREQ Replace 03P9253.

Description of the self-test result display

1) When the ARP and RP boards are not installed, related lines are shown by Xs.

2) RAM card will be NG if the card is inserted after power-up.

3) RP BOARD BAT: Checks the voltage of the battery on the RP board. NG will appear when the battery drops to less than 2.65 V. The capacity of a new battery is about 3.6 V.

4) CARD1 BAT/CARD 2 BAT: The capacity of the battery inside the card is checked.

5) ANTENNA SPEED: Set the radar to TX. 0 (zero) is indicated in STBY mode.

6) TRIG FREQ: Set the radar to TX and stop the antenna rotation.

7) MAG CURRENT*: Reference only. The value is not actual magnetron current. If the radar is normal, the value increases when the radar is set from STBY to TX.

8) R. MONITOR* Reference only. This checks regulated +5 V for MIC. If 0 V, it is abnormal.

9) TUNE IND*: Reference only. If the radar is normal, the value increases when the radar is set from STBY to TX. The defective magnetron or MIC is expected if the value is low at TX.

10) *: Service call with these readings may help the technician to prepare necessary spare parts.

Keyboard TestPressing a key highlights the corresponding location on the display screen.The STBY TX key is pressed in the end.

4-8

EBL/VRM/Trackball TestPressing the key and rotating the trackball increases or decreases the number on the screen.

Test PatternPressing the STBY TX key calls up the test pattern composed of circles, squares, and diagonallines.

4.5 Notice on Replacing Major Parts

MAGNETRONNOTE) The magnetron emits a strong magnetic field. For this season, remove awrist watch before performing the replacement and use a non-magneticscrewdriver to dismount the magnetron.

The estimated life of the magnetron is 2000 hours, (including time in stand-by), however actuallife depends on usage.

1. Turn off the power.

2. Dismount the transceiver module.

3. Dismount and replace the magnetron.

4. When a new magnetron is fitted, turn on the power and measure magnetron current. SeeChapter 3 for heater voltage rating, and potentiometer to be adjusted.

5. Allow at least 30 minutes under ST-BY for pre-heating.

6. Transmit on a long range and measure magnetron current. Readjust magnetron current ifnecessary.

7. Allow at least 30 minutes under TX for frequency stabilization.

8. Tune the radar : Press [RADAR MENU] [0] [0] [2] [0] [0] [0] [0] and [ENT].

9. Reset�TX Hours�and�On Hours�on the INSTALLATION SETUP menu.

MICThe MIC can be replaced individually. However, the replacement should be made inside theroom where no radar signal is received. The Tune Initialization must be made after thereplacement.

SPU BoardSettings of the MAIN and INSTALLATION menus are stored onto EEPROM U10 on the SPUBoard.

Remove the U10 on a old board and replace it with one on the new board. The TuneInitialization must be made after the replacement.

4-9

4.6 Program Numbers1) The following summarizes the programs used in the system. The radar and RP programs are

stored on the flash ROM, and the ARP program on the PROM.

2) How to switch between English and Japanese Versions

The following key operation can change the English menu to the Japanese one, and viceversa.

(1) Turn on the unit.

(2) While pressing and holding down the HL OFF [1] key, press the PANEL BRILL [2] key,the MODE [3] key, and the OFF CENTER [4] key in this order.

(3) And then, turn off the unit.

Board Program Number Method of Updating Remarks

SPU Board (03P9253) 0359149101 Loading program with apersonal computer

RP Board (03P0298) 0359150101 Loading from programmaster card

ARP Board (18P9002) ARP : 18590381XX

DSP : 18590391XX

Changing PROM.

4.7 How to update system program

Radar System ProgramThe radar system program, stored onto the flash ROM U11 on the SPU board, is replaced byfollowing procedure.

ConnectionThe series port of a personal computer (PC) is connected to the J456 on the INT board inside theradar.

Procedure1. Open the program file, and click the up.bat file.

The message “TARGET POWER ON” appears.2. Turn on the radar.

“Now Erasing” and then, “xxx percent completed” appears on the PC screen. Nothing appearson the radar screen. The program update is terminated with the message “Finish Version up. ”

4-10

3. Disconnect the interconnection cable.4. Turn off the radar and turn on again. Confirm the program revision level.

RP ProgramThe program is stored onto the flash ROM, U3 on the RP board.

1. Insert the program card into the upper card slot.

2. Turn on the radar.

3. The radar is programmed with new version after about 15 seconds while the count-downscreen is displayed on the screen. The CR1 on the RP board lights.

4. Turn off the radar and turn on again. Confirm the program revision level.

ARP ProgramThe program is stored onto the PROMs, U3 and U40 on the ARP board. The ROM is replaced toupdate the program.

4-11

4.8 Alternation of Power SupplyThe following tabulates the necessary parts to be changed when the radar is modified from ACspecification to DC specification and vice versa.

From AC to DC

Parts Name Type Code No. Remarks

RPU-011-DC (24 rpm) 008-487-440 03P9246PTU Board (DC)

RPU-011-DC (42 rpm) 008-493-700 03P9246

Filter Assembly RDP-124*DC* 008-492-460 03P9226, fuse, etc.

From DC to AC

Parts Name Type Code No. Remarks

RPU-011-60R2 (24 rpm) 008-487-430 115 VAC, 03P9245

RPU-011-60R4 (42 rpm) 008-487-890 115 VAC, 03P9245

RPU-011-72R2 (24 rpm) 008-487-900 220 VAC, 03P9245

PTU Board (AC)

RPU-011-72R4 (42 rpm) 008-487-920 220 VAC, 03P9245

RPU-011-AC*100/115 V* 008-487-470 Fuse : 10 ANF Chassis Assy.

(Noise Filter) RPU-011-AC*220 V* 008-487-480 Fuse : 5 A

Figure 4.3 Display Unit, top view, drawn forward

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5-1

5.1 OutlineThis chapter provides troubleshooting flow charts and describes error messages.

5.2 Error MessageWhen no bearing pulse signal is input to the display unit, BP-SIG-MISS is indicated, and when noheading signal, HD-SIG-MISS. Check the antenna cable when those indications appear.

Visual AlarmsVisual alarms appear on the display to alert the operator that the system is abnormal. The name andmeaning of each visual alarm is tabulated below.

Alarm Type Visual Alarm Description

LOST No echo received from an acquired target for nineconsecutive sweeps. The target mark blinks.

TARGET FULL(AUTO+MANU)

Relevant target memory becomes full.

ARPA alarm

GUARD Target transits the operator-set guard ring.

HEAD LINE No heading pulse to the SPU board

AZIMUTH No bearing pulse to the SPU board.

TRIGGER No trigger pulse to the SPU board

VIDEO No video signal to the SPU board

LOG No log signal contact closure to SPU board for oneminute

GYRO No gyro signal AD format to SPU board for one minute

Input signal

(SIGNALMISSING)

EPFS No L/L data from Electronic Position Fixing System tothe SPU board

5.3 Troubleshooting Flow ChartsThe troubleshooting flow charts help the service technician to diagnose a problem. To use the flow charts,first find symptom and its flow chart number in the flow chart on the next page. Then, follow appropriateflow chart to troubleshoot.

Chapter 5. TROUBLESHOOTING

5-2

General Flow Charts

5-3

Symptom: Nothing appears on the display

Keys beep whenpressed.

No (No power)

Yes (Equipment is powered)

CRT heater lights?NG

FR2115-SME-75

Flow chart 1

Results ofmeasurement.

NG

OK

OK

Check horizontal sync,vertical sync and videooutput (MOTHER pcb,03P9251,J418 #1,2,3,13,14)

Faulty CRT assy.(Type : CDT2136B)

Defective 03P9253 (SPU)

Faulty CRT assy.(Type : CDT2163B) ADefective 140 Vcc line

*See block diagram of SPU board.

Confirm that maintenance SW is on.

OK?NG(set to front side)

Rating?

OK(set to rear side)

Check input voltage at DTB-1.

Turn on w/ mainte. sw on.

OK

NG

NG

OK

Disconnect DJ-1.NG

OK

Defective pcbinside RF unit

Defective PTU Board

Fauty power cable,power connector,ship's mains.

CR12 on PTUlights?

No

Defective SPU

Yes

Wrong switch settingCheck fuses.(F1 and F2)

OK? NG

OK

Replace fuse

OK

Blown fuse

NG

Defective pcb inside display unit

+5V,+12V fromPTU are normal?

Defective PTU Board

NG

OK

*Maintenance switch is provided only on AC sets.

*For DC sets F1 only.

5-4

Symptom: Abnormal display

FR2115-SME-74

Flow chart 2

OK ?

Check horizontal sync,vertical sync and videooutput (MOTHER Pcb,03P9251,J418 #1,2,3,13,14)

CRT brilliance ?NG

OK

OK

OK

Picture is in sync ?NG

Focus ?

Picture size?

End

*See block diagram of SPU board.

Defective 03P9255 (SPU)

Picture is synchronizedautomatically.(No adjuster)

NG

OK ?

NG Adjust CRT focus.

OK ?

OK ?

Adjust BRIL control.

Faulty CRT assy.(Type : CDT2136B)

OK

NG

NG

Adjust BRIL onCRT ADJ pcb.

NG

Adjust picture size.(CRT ADJ Board)

OK

OK

NG

NG

OKOK

5-5

Symptom: No heading data

FR2115-SME-73

Flow chart 3

Heading dataindication ?

Blank

***.*

OK(Normal)

Power OFF and ON.

OK?

Heading data from the sensor temporarily interrupted.

Check CLK data at INT board, J446 #3,#4 .

OK

OK?

Faulty heading sensoror its interconnectioncable.

NG

NG

Faulty pcb 03P9253

5-6

Symptom: No nav data.

FR2115-SME-72

Flow chart 4

Nav data indication ?All data shown by asterisks or blank.

Some data shown byasteriska or blank.

OK

OK?NG

Wrong data sentence format selection.

Select correct sentence.

Check nav equipment'soutput sentences.

OK

OK?NG

Faulty pcb 03P9253 or IEC61162 not selectedon nav equipment.

Faulty nav equipment orinterconnection cable.

Check LED(CR6) on 03P9253.

5-7

Symptom: Key(s) inoperative

FR2115-SME-71

Flow chart 5

OK

NGWarm upcountdown.

OK

NGOnly one key is faulty.

ALL keys.

Single vertical row only.Single vertical row of keys

is faulty.

Faulty pcb 03P9253.

Faulty S1 to S11 on pcb 03P9255, S1 to S19 on pcb 03P9256.

Defective signal lineFaulty pcb 03P9255(U1).

Press a key.

CR5 lights ?

Lighting

Not lighting

Faulty pcb 03P9253.

Faulty pcb 03P9255.

5-8

Symptom: Antenna does not rotate

FR2115-SME-70

OK

+24V (DJ-1#23, #25)several seconds after TXkey is pressed. TX key is pressed.

+5V when TX key is pressed.

J103 #7on PTU Pcb

End

Faulty PTU Board Faulty Ant. SW on 03P9254,Faulty 03P9253

Faulty antenna cable, Faulty motor.

Flow chart 6

NGAntenna doesnot rotate.

ON

ANT SW position ?

0V (DJ-1 #23, #25) whenTX key is pressed.

OFF

MOTOR +/-signal on DJ1.

Turn on the SW.

5-9

Symptom: No echoes nor white noise

FR2115-SME -69

Flow chart 7

GAIN VR at maximum.

NG

OK

0V ?

OK

Check GAIN controlvoltage with GAIN VR fully CW.(#15 of U100 on SPU)

Rating ?

OK

Faulty pcb 03P9253.

Set GAIN VR at maximum.

NGFaulty VR4 on 03P9255 Board.

NG

Open- orshort-circuit

OK

+12/-12V line onantenna unit.

OK

Check for short circuited ordisconnected video signalline between anntena unitand display unit.

NGFaulty video line

NGFaulty +12V/-12V line

0V

approx, -4V

White noise.Check video signal input to INT board (TP1&TP6).

Faulty pcb 03P9232.

5-10

Symptom: Poor sensitivity

FR2115-SME-68

Flow chart 8

Less than 2000 hrs ?

OK

No echo; poorsensitivity.

No echo (White noise appears)

Check TOTAL ON TIME/TOTAL TX TIME.

Rating ?

OK

Check if display unitoutputs TX trigger.(DJ-1 #4)

DJ-1#7 is normal ?

OK

Check TUNE voltage output from display unit.(Switch from ST-BY to TX)

Manual Tune Voltage :about 2 V to 32 V

TUNE IND value in manual mode ;about 1 to 3 V In manual mode, rotate

TUNE VR.

NG

Poor sensitivity

NG(No TX trigger)

Faulty pcb 03P9253.

NG Faulty pcb 03P9253.

0V

approx. 12V

Replacemagnetron.

To 1)(page 5-11)

OK

Faulty pcb 03P9253.

NG

0V

approx. -4V

TUNE IND in self-test result ?

OK

To 2)(page 5-12)

NG

OK

NGManual tuning ?

Check maximum gain is obtained with maximum tuning indication.

OK

NGOK ?

Defective IF amp.Defective MIC

OK

NGPerform Tuning Initialization.

Defective IF amp., MIC, or SPU board.

Defective EEPROM, Defective back-up ckt

Check input video signal to INT Board, TP1 & TP6.

OK? Defective IF AMP (03P9232)

5-11

PW A, PW B, PW C are normal ?

Measure magnetron current in TX mode.

In manual tune, measure tune volt, at DJ-1 #7, while rotating TUNE VR.

OK

MAX. voltage

about 3V

Rating

OK

Magnetron usagetime within about

20000 hrs.

OK

Check puselength select signals.

Manual tune voltage :about 2 to 32 V

Manual tune IND.voltage:about 1 to 3V

NG

NG

NGFaulty pcb 03P9253.

NG

about 1V

Faulty pcb 03P9253.

Replace magnetron.

From 1) on page 5-10.

FR2115-SME-66

Check TUNE IND voltage in self-test result display.

Signal S1PW A,DJ1 #18 LPW B,DJ1 #13 LPW C,DJ1 #1 L

S2LLH

M1HLL

M2LHL

M3LHH

LHHH

Faulty MIC,Defective 03P9232

Rating ? Defective magnetron

FR-2115 : 4.6 V ‘5.3 Vdc (L)FR-2125 : 7.4 V ‘8.1 Vdc (L)

NG

OK

Defective 03P9232,Defective 03P9230.

5-12

Rating

OK

Rating

OK

Measure TX-HV in ST-By mode.

NG

Defective Magnetron or MIC

From 2) on page 5-10

FR2115-SME-67

Faulty PCb HV-9017

FR-2115: 7.4 V to 7.6 Vdc (S1)FR-2125: 8.2 V to 8.4 Vdc (S1) 6.5 V to 7.5 Vdc (L)

Rating

OK

NGFaulty magnetron.

FR-2115: 4.6 V to 5.3 Vdc (L)FR-2125: 7.4 V to 8.1 Vdc (L)

NGFaulty pcb 03P9243

In ST-By mode;FR-2115: 310 to 350VdcFR-2125: 520 to 580Vdc

Check magnetron heater voltage inST-By mode.

Measure magnetroncurrent in TX mode.

5-13

Symptom: No GAIN, A/C SEA, A/C RAIN effect

FR2115-SME-65

Flow chart 9

GAIN can beadjusted.

OK

A/C SEA can beadjusted.

Check voltage at U100 #1 on 03P9253 .

NG

NG

OK

A/C RAIN can beadjusted.

OK

End

Faulty pcb 03P9253

Faulty VR4 on 03P9255 board.

MIN : approx. -7 VMAX : approx. 0 V

OK


NG

Faulty pcb 03P9253

MIN : approx. 0 VMAX : approx. 5 V

OK


NG

Faulty pcb 03P9253

MIN : approx. -7 VMAX : approx. 0 V

OK

NG

NG



5-14

Symptom: Target cannot be acquired

Flow chart 10

AD format HD datareceived

*Heading data in NMEA183 cannot be used for ARP.

Transfer rate?

25 msec

EPA or ARPA?

OK

OK(Max gain: Max value, min gain: min value)

Selftest result?

Input signal test 1result?

H, B, T and V are OK.

All targets acquired ?

Some targers not acquired

OK?

200 msecSelect 25 msec, AD format.

ARP/DSP is NG.

H, B, T, and/or V is NG.

0 or no change

All targer not acquired

Faulty pcb 18P9002

Faulty pcb 18P9002

Faulty pcb 18P9002

E PA When CR1 on ARP board is off : faulty 18P9002.When CR1 on ARP board is blinking : faulty 18P9002 or 03P9253 .

No defectived board presumedCheck acquisition conditions.

Incorrect input or Faultypcb 03P9253.

System fail?

No error indicationH, BP, T, V, Gyro

Faulty pcb 18P9002

FR2115-SME-64

ARPA

ARP/DSP is OK.

Error indicationRotating GAIN VR, observe FE-data in inputsignal test 2.

SCHEMATIC DIAGRAM

Drawing Type Drawing No. FR-2115/2125 Page

INTERCONNECTION DIAGRAMS - C3464-C01 ¡ S-1

DISPLAY UNIT GENERALSCHEMATIC

RDP-124(AC) C3464-K01 ¡ S-2

RDP-124(DC) C3464-K19 ¡ S-3

CENTER PANEL PRINT03P9255(1/2) C3464-K04 ¡ S-4

03P9255(2/2) C3464-K05 ¡ S-5

SUB PANEL PRINT 03P9254 C3464-K06 ¡ S-6

RIGHT PANEL PRINT 03P9256 C3464-K07 ¡ S-7

INT BOARD

03P9252(1/4) C3464-K08 ¡ S-8

03P9252(2/4) C3464-K09 ¡ S-9

03P9252(3/4) C3464-K10 ¡ S-10

03P9252(4/4) C3464-K11 ¡ S-11

MOTHER BOARD03P9251 C3464-K12 ¡ S-12

03P9251 C3464-K13 ¡ S-13

DEGAUSS BOARD PDM9025 C3352-K18 ¡ S-14

TX-HV BOARD HV-9017 C3352-K07 ¡ S-15

PTU BOARD03P9245(AC) C3464-K03 ¡ S-16

03P9246(DC) C3464-K18 ¡ S-17

MAIN BOARD(CRT) PBH172 C3464-K20 ¡ S-18

VIDEO BOARD(CRT) PBH173 C3464-K21 ¡ S-19

IF3-A10 BOARD(CRT) UBH188-A00010 C3464-K22 ¡ S-20

SOCKET BOARD(CRT) UBH182-A00010 C3464-K23 ¡ S-21

CONNECTION BOARD(CRT) UBH207-A00010 C3464-K24 ¡ S-22

PROCESSOR BOARD64P1106(1/2) C4340-K01 ¡ S-23

64P1106(2/2) C4340-K02 ¡ S-24

PERFORMANCE MONITOR I/F 03P9225 C3464-K17 ¡ S-25

RGB BUFFER BOARD 03P9229 C3464-K25 ¡ S-26

ALARM BOARD 03P9262 C3464-K26 ¡ S-27

SCANNER UNIT - J3464-K02 ¡ S-28

MODULATOR BOARD 03P9244 C3464-K14 ¡ S-29

RFC BOARD 03P9243 C3464-K15 ¡ S-30

IF AMP BOARD 03P9232 C3464-K16 ¡ S-31

BEARING SIG GEN BOARD MP3795 C3352-K10 ¡ S-32

Documents

Furuno2115 Service Manual