Service Manual FR7112

MARINE RADAR/AUTO PLOTTER

FR-7062/7112/7252, ARP-10

F I R S T E D I T I O N : S E P 1 9 9 8 C : O C T. 1 2 , 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 5 9 0 - CF R - 7 0 6 2 / 7 1 1 2 / 7 2 5 2( E I K I )

1. GENERAL ____________________________________________________ 1-1

1.1 Outline __________________________________________________________________ 1-1 1.2 Boards & Major Components ________________________________________________ 1-2 1.3 Specifications_____________________________________________________________ 1-3

2. BLOCK DESCRIPTION _________________________________________ 2-1

2.1 Overview _______________________________________________________________ 2-1 2.2 Display unit ______________________________________________________________ 2-2 1. Power Supply Circuit (PTU-9149) ___________________________________________ 2-3 2. Signal processor (SPU-9211) ________________________________________________ 2-4 Automatic tuning _________________________________________________________ 2-5 Tuning indicator __________________________________________________________ 2-6 Manual tuning ___________________________________________________________ 2-6 Tuning cont. signal at power-on ______________________________________________ 2-6 Video adjustment _________________________________________________________ 2-7 Heading ________________________________________________________________ 2-7 Switching of NAV data (NMEA 0183) ________________________________________ 2-7 Turning on/off antenna rotation ______________________________________________ 2-8 Verification of ARP connection ______________________________________________ 2-8 3. ARP circuit (18P9002) _____________________________________________________ 2-9 Target acquisition _________________________________________________________2-10 ARP self-test ____________________________________________________________2-11 4. TTM data sentence format __________________________________________________2-12 2.3 Transceiver Unit __________________________________________________________2-13 MIC & Amplifier_________________________________________________________2-13 Block Diagram of IF-9214 Board ____________________________________________2-14 Block Diagram of IF-9099 D Board __________________________________________2-15 Modulator ______________________________________________________________2-16 Block Diagram of 03P9235 Board ___________________________________________2-17 Block Diagram of 03P9237 Board ___________________________________________2-18 MODULATOR Board 03P9239 for FR-7252 _________________________________2-19 RFC Board 03P9239 Board for FR-7252 _____________________________________2-20 POWER Supply Board 03P9236 for FR-7112 __________________________________2-21

2.4 Differences between PCBs __________________________________________________2-22 1. SPU Board (SPU-9211) ___________________________________________________2-22 2. PTU-9149 Board _________________________________________________________2-23

3. ADJUSTMENT ________________________________________________ 3-1

3.1 Adjustment of Display Unit__________________________________________________ 3-2 2.2 Adjustment of Scanner unit __________________________________________________3-12

Table of contents

4. MAINTENANCE_______________________________________________ 4-1

4.1 Remarks on Replacement of Major Parts _______________________________________ 4-1 4.2 Life Expectancy of Expendable Parts __________________________________________ 4-2 4.3 Menu List _______________________________________________________________ 4-3

5. TROUBLESHOOTING __________________________________________ 5-1

5.1 Outline _________________________________________________________________ 5-1 5.2 Troubleshooting Flow Charts ________________________________________________ 5-2 5.3 Message Indication ________________________________________________________ 5-15

Mechanical Parts List ______________________________________________ M-1

Mechanical Exploded View _________________________________________ D-1

Electrical Parts List________________________________________________ E-1

Interconnection Diagram ___________________________________________ S-1

Schematic Diagram________________________________________________ S-6

1-1

Chapter 1. GENERAL

1.1 Outline

This manual provides the information necessary for the servicing and adjustment of the radars FR-7062, 7112 and 7252.

The antenna unit uses a Log IF amplifier.

The table below shows the major specifications of each model. The same program is installed on allmodels, but the menu setting through factory menu is different between the models.

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

Functions FR-7062 FR-7112 FR-7252

Maximum Range 64 NM 72 NM 96 NM

Program Number 0359146-1XX

Tuning Voltage(displayed at manual tuning)

1.0 V to 11.9 V 1.0 V to 32 V

RF Module RTR-059 RTR-060 RTR-061

Antenna Rotation 24 rpm or 48 rpm

Output Power 6 kW 10 kW 25 kW

DJ-1 Connector Type MJ connector MCP connector

Input Voltage 10.8 V to 41.6 V 21.6 V to 41.6 V

FR7062-SME-1

1-2

1.2 Boards & Major Components

Note: MICs RU-9253 and RU-9371 have the same characteristic. Either of them can be used for FR- 7112/7252.

Board FR-7062 FR-7112 FR-7252

DISPLAYUNIT

PROCESSOR Board SPU-9211 B

POWER SUPPLY Board PTU-9149 PTU-9149 A

FILTER Board FIL-9148

TX-HV Board - HV-9017 B

PANEL Board PNL-9150 D

Trackball TB-9152 A

INTERFACE Board INT-9234 INT-9240

Auto Plotter(Option: ARP-10)

18P9007

CRT Unit JM-12FU

SCANNERUNIT

MODULATOR Board 03P9235 03P9237 03P9239

RFC Board - 03P9238

POWER SUPPLY - 03P9236 -

IF AMP Board IF-9214 IF-9099 D

INTERFACE Board 03P9249 03P9250 03P9241

Limitter - RU-9099

MIC RU-9039 RU-9253 or RU-9371

Magnetron MG5389 MG5241 M1458

Circulator RC-4356

Scanner MotorRM-8025(24 rpm) orRM-8711(48 rpm)

RM-8376(24 rpm) or RM-8711 (48 rpm)

CABLE Signal Cable RW-6537 RW-6537 RW-9398

FR7062-SME-2

1-3

1.3 Specifications

SCANNER UNIT

TRANSCEIVER

FR-7062 FR-7112 FR-7252

Radiator Type Slotted Waveguide Array

Radiator Length 120 cm (XN12A) or 180 cm (XN13A)

Horizontal Beamwidth 1.9 deg. (XN12A) or 1.2 deg. (XN13A)

Vertical Beamwidth 22 deg. (XN12A/XN13A)

SidelobeAttenuation

Within +20 deg. to-20 deg. of mainlobe

-24 dB or less (XN12A/XN13A)

Outside +20 deg. to-20 deg. of mainlobe

-30 dB or less (XN12A/XN13A)

Polarization Horizontal

Antenna Rotation 24 rpm (XN12A/XN13A) nominal or 48 rpm (XN12A) nominal

Scanner Housing Structure Open Radiator

CompassSafe Distance

Standard 1.00 m 1.65 m

Steering 0.75 m 1.25 m

FR7062-SME-3

FR-7062 FR-7112 FR-7252

Magnetron MG5389 MG5241 M1458

Frequency &Modulation

9380 MHz to 9440 MHz, PON

Peak Output Power 6 kW 10 kW 25 kW

Pulselength &Pulse Repetition Rate

0.08us, approx 2100 Hz (Short Ranges: 0.125 nm to 1.5 nm)

0.3us, approx 1200 Hz (Middle Ranges: 1.5 nm to 3 nm)

0.8us,approx 600 Hz (Long Ranges: 3 nm to 36 nm)/approx 550 Hz (Long Ranges: 48 nm to 64 nm)/approx 500 Hz (Long Ranges: 72, 96 nm)

Modulator FET Switch

Duplexer Circulator with diode limiter

Receiver Front End MIC (Microwave IC)

Tuning Automatic or Manual

Intermediate Frequency 60 MHz

Bandwidth 25 MHz (0.08 us and 0.3 us), 3 MHz (0.8 us)

FR7062-SME-4

1-4

DISPLAY UNIT

FR-7062 FR-7112 FR-7252

Picture Tube PPI (Raster scan, Daylight display)

Range Scale (nm)

FR-7062: 64 nm max FR-7112: 72 nm max.. FR-7252: 96 nm max.. (A maximum range is selected among 64,72 and 96 nm.)

0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 36 48 64* 72* 96*

Range Ring Interval 1/16 0.125 0.125 0.25 0.25 0.5 0.5 1 1 2 2 3 4 6 12 12 16 18 24

Number of Rings 2 2 4 4 4 3 4 2 4 3 4 4 4 4 4 4 4 4 4

Bearing Resolution 1.9 deg.

Range Discrimination Better than 20 m

Bearing Accuracy +1 deg. to -1 deg.

Minimum Range Better than 25 m

Range Ring Accuracy0.9 deg. or 8 m, whichever is the greater

VRM Accuracy

Input/Output Terminal

NMEA (two input): NMEA 0183 NMEA (two output): NMEA 0183 ($RATLL, $RARSD, $RATTM: ARP-10(option)) GYRO (output): FURUNO clock-serial (AD format) or NMEA 0183 (HDT, VHW, HDG, HDM) External Buzzer (output): +12V source plus Open Collector Slave Display (output): TRU-HD, BP, TR-TRIG, VIDEO

NAV Data

NMEA 0183 Format Own ship's position: GGA>RMC>RMA>GLL (GLL is available Ver 1.5 only) Heading (True): HDT>HDG*1>HDM* 1>VHW>VHW* 1

Heading (Magnetic): HDM>HDG*1>HDT*1>VHW>VHW* 1

Course (True): RMC>RMA>VTG Course (Magnetic): VTG>RMC>RMA Waypoint (Range/Bearing): RMB>BWC>BWR Loran time difference: RMA>GLC>GTD Water depth: DPT>DBT>DBK>DBS Water temperature: MTW>MDA Time: ZDA XTE: RMB>XTE>APB *1: Calculate by magnetic drift.

Compass safeDistance

Standard 1.1 m

Steering 0.8 m

FR7062-SMJ-5

1-5

ENVIRONMENTAL CONDITIONS

POWER SUPPLY & POWER CONSUMPTION

FR-7062 FR-7112 FR-7252

AmbientTemperature

Scanner Unit -25 deg. to +70 deg.

Display Unit -15 deg. to +55 deg.

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

Vibration IEC 945

FR7062-SME-6

FR-7062 FR-7112 FR-7252

DC Power 10.8 V to 41.6 V 21.6 V to 41.6 V

DC PowerConsumption

XN12A (24rpm) 70 W to 90 W (100 kt) 85 W to 100 W (100 kt) 105 W to 120 W (100 kt)



AC Power100/110/120/220/230 VAC, 50/60 Hz, 1 phaseRequires Rectifier RU-3423

100/110/120/220/230 VAC,50/60 Hz, 1 phaseRequires RectifierRU-3423 (XN12A) orRU-1746 B (XN13A, 48rpm)

FR7062-SME-7

2-1

Chapter 2. BLOCK DESCRIPTION

2.1 Overview

The simplified block diagram of the system is illustrated below.

Simplified block diagram of system

TX

The trigger pulse from the PROCESSOR Board is delivered to the MODULATOR Board, oscillatesthe magnetron, and then radar wave is emitted from the radiator.

RX

The 9.4 GHz echo signal received by the antenna is converted to 60 MHz signal by the MIC, ampli-fied by IF Amp, and fed to the PROCESSOR Board as a video signal. It is digitally processed andthen displayed on the CRT.

Auto Plotter (optional)

The following signals are supplied from the SPU board to ARP-10 board: Heading, Bearing pulse,Video, Trigger, Bearing in AD format, and Ship’s speed in NMEA 0183. Target acquision and track-ing are made on the ARP-10 board. Target symbols are generated on the SPU board, based on targetdata received from the ARP-10 board, and displayed on the CRT. Target data includes CPA, TCPA,Speed, and Course.

Scanner Unit

Antenna

Mag. MIC

Mod.IF

Amp

RF Module

Display Unit

ARP-10

Processor

Panel Power

QV(not used)

HD, BP

VIDEO

Trigger

HD, BP,Trigger,Video

Gyro/NMEA speed

CRT

Ship's mains NAV. Gyro

TTM data

FR7062-SME-8

TTM(ARP-10)/TLL,RSD

2-2

2.2 Display Unit

1. Power supply Circuit (PTU-9205)

Refer to the block diagram on page 2-3.

The power supply circuit is basically consists of a main inverter and a sub inverter. The main inverterderives the isolated line voltages +12 V/ANT +12 V and -12 V/ANT -12 V from the main input. Thesub inverter derives +5 V and +32 V from +12 V output of the main inverter.

Main inverter

When the PWR switch is pressed, the power control logic U2 activates the SET winding of K1 toswitch the relay on, and DC+10 V is applied to the PWM.

When power is supplied to the PWM controller, it starts operation and alternately turns on and offfour switching FETs Q1/Q2/Q3/Q4 connected to the primary winding of T1. The resultant ACvoltage obtained on the secondary winding are rectified and smoothed to +12 V and -12 V, anddelivered to various circuit in the equipment. The voltage taken from the +12 V line is fed back to thePWM controller through the VR1 to maintain the +12 V output constant.

Sub inverter

U6 and the associated circuit form a PWM switching regulator for +5 V and +32 V. The voltage takenfrom +5 V line is fed back to U6 through voltage adjuster VR2 to maintain the +5 V output constant.

Protector

Protection of power supply circuit is achieved by stopping the drive signals to the switching FETsQ1/Q2/Q3/Q4.

Overload on +5 V and +32 V line is detected by U6. Overload on +12 V (MORTOR +) line isdetected by U7. When the +5 V and +32 V line is reduced by a heavy load, U6 or U7 becomesconductive and consequently disables the PWM controller through Q5, Q6, Q7 and Q8. Overcurrenton the main input line is detected by R13, R14 and R15. The voltage drop across Q6, Q7 and Q8becomes large when the inverter is overload. Overcurrent detector U3 disables PWM inverter U2when the voltage drop exceeds a certain level.

Overvoltage of mains input is detected by the U1. When the input voltage exceeds 41.6 V, the U1becomes active and disables PWM controller U2.

Scanner motor power (ANT+12 V/-12 V)

+12 V and -12 V (ANT+12 V/-12 V) are used to drive 24 V scanner motor.

The power to the motor is turned on/off by the relay (K1) on the POWER SUPPLY Board. The relaycontrol signal from SPU Board is supplied to Q41 on the POWER SUPPLY Board. Pressing the TXkey changes the ANT SW signal state from 5 V to 0 V, and K1 is on to supply +12 V.

2-3

SH

IP'S

MA

INS

VO

LT A

DJ.

(+12

V)

FR

-706

2/71

12

DC

10.

2 V

~41

.6 V

FR

-725

2

DC

21.

6 V

~41

.6 V

+ -L1

351

J135

1C

R13

51T

1C

R33

,34

RE

CT.

CR

31,3

2L3

1

Q33

/U6

CR

36

+10

V

T2

Q31

/CR

35U

5V

R1

CR

37

F13

51

LIN

EF

ILT

ER

RE

VE

RS

EP

OLA

RIT

YP

RO

TE

CT

OT

R

1~3

4~6

21

TP

2J1

301

TP

3

Q1,

2

Q3,

4

U4

U3

INP

UT

OV

ER

-V

OLT

DE

T.

ER

RO

RA

MP

SW

ITC

HIN

GR

EG

ULA

TO

RC

ON

TR

OL

(P

WM

)

SW

ITC

HIN

GR

EG

ULA

TO

RC

ON

TR

OL

(PW

M)

VO

LT A

DJ.

(+5V

)

VR

2

L32

12

3

+12V

+12

V

-12V

0V +32

V+

32V

U8

-12V

+12

VJ2

SM

OO

TH

L33

+5V

0V

FIL

TE

R B

OA

RD

(F

IL-9

148)

PO

WE

R S

UP

PLY

BO

AR

D (

PT

U-9

149)

2 6 1

+5V

+5V

Q41

K2

J1

3

AN

T-12

V3

AN

T+

12V

4

AN

T S

WTo

SP

U B

oard

11

TX

(P

)10

TX

(K

)9

PW

R8

DC

(-)

DC

(-)

PW

R

TX

(K

)

TX

(P

)AN

T S

WJ2

74 5

-12V

1 2

+12

V5 6

0V7 8

TX

PW

R

To S

CA

NN

ER

UN

IT

PTo

SP

U B

oard

SE

T

RE

SE

T

K1

Q5/

U2

LAT

CH

ING

RE

LAY

U1

ON

OF

F

PO

WE

RC

ON

TR

OL

LOG

IC+

10V

RE

G.

PR

OT

EC

TC

ON

TR

OL

LOG

ICO

VE

RC

UR

RE

NT

(+5V

)

U7

+5V

RE

G.

CR

36+12

V

+10

V

PROTECT

PWN SIG.

INP

UT

OV

ER

-V

OLT

AG

E

VR

3

4~6

1~3

FR

7062

-SM

E-0

9A

BLO

CK

DIA

GR

AM

OF

PO

WE

R S

UP

PLY

20

16

13

15

14

13

14

15

10, 11

3, 4

5, 6

12, 13

14, 15

3

Panel

J104

J101

J104

J110

EXT TRIG

VIDEO

AC SEA VR

GAIN VR

A/C RAIN VR

BEARING

HEADING.P

TUNE IND

KEY DATA

NAV DATA

NAV DATA

GYRO DATA/NAV DATA

GYRO DATA

TRACK BALL

PULSE (#1), UP DOWN (#2), CS N (#7), *Functions only on Tune/videoadj menu.

approx3.8Vpp

approx2.2Vpp 4Vpp 4Vpp

0.7V

BP

0Vapprox 7V

AC AUTO: OFF AC AUTO: ON

#3 #5

#31

EEPOTU14

A/C AUTOU16

INPUT

AC AUTO ON or OFF(From U40 #53)ON:5 V, OFF:0 V

MAX: 4 V, MIN: 0 V

MAX: 0 V, MIN: -9 V

MAX: 0 V, MIN: -7 V

TP3 (VIDEO LEVEL)

GAIN, A/C SEA

Q17/18

STC CURVE

TP4

(STC CURVE))

4V

4.76V #24.73V4.70V4.60V4.44V4.22V

A/C RAINCR12

ANALOG ECHO STRETCH

ES 2U16

INPUT

ES2 ON or OFF(From U40 #54)ON: 5 VOFF:0 V

D/A CONV.COMPARATORGEN.

U21

3.90V

D/A CONV. I/F

U42

(180Hz, 450 pulse)

(1640Hz, 4096 pulse)

TP7

TP1

PLL

U8

PLL

U8

VCO (369kHz)

PLL (180Hz)

PULSE (#12), DOWN (#11), CS N (#10)

FILTER

R2/C1

ST-BY:0.7 V, TX:approx 2.5 V (MAX)

NAV1

NAV2

PHOTO ISOLATOR

U1

PHOTO ISOLATOR

U3

PHOTO ISOLATOR

U4

PHOTO ISOLATOR

U2

DATA SELECTOR

U39

NAV data selected

NAV 1/2 data selection

NMEA 0183 HDG/HDT/VHW

SHIFT-CLK GYRO DATA

#25 #26

TB XA

TB XB

TB YA

TB YB

CPU

#3

#1

#18

#79, 80

#67

#66

#66

#19

#20

#21

#24

U32

EXT TRG

TP2

TX TRIG

12V

13 s

64 s

Max Brilliance: 4 VppMin Brilliance: 1 Vpp

7

J104

To RF unit

4

J102

To CRT

2, 5 To CRT

11, 12

J104

PL A/PL B*2

2

J105

TRU HD

6

J101

DIMMER

17

J103

ANT SW

3

J109

EXT BUZZER

J107

10

J104

TUNING CONT.

8 MBS GAIN

A2, A3 GYRO DATA, CLK

A11 TRUE HD

A4 SCAN INT

A13 SAMPL T

A9 ARPA VIDEO

U26LEVEL1

U24LEVEL2

U22LEVEL3

U27LEVEL4

U25LEVEL5

U23LEVEL6

U20LEVEL7

TRIG GEN,ECHO SAMP,INT REJ,NOISE REJ

U4603S9060

SAMPLE CLK

TRIGSelector

EchoProcessingEcho Trail(ES1)

INTTRIG

SMPLTRIG

U42

Timing ADJ.

U45

BASE TRIG

TRUE SMPLE TXT

VRAMEcho, Echo Trail

U30, 31

Echo/Graphic dataoverlay,Priority

U45

Brilliance Selection

U42

D/A CONV.

Q19 26 Q31, 32

VIDEO

READ CLK

CLOCKGEN.

U45

ECHO77.7MHz

U34

2.5Vpp

TP8

SYNC

RANGEDATA

COORDINATEsCONV(R, ) to (X, Y)

U40

XY ADDRESS

BEARINGDATA

TP5 (H SYNC) TP6 (V SYNC)

H/V SYNC

DRIVER

U19

ST-BY: 5 VTX: 0 V

SYSTEM ADDRESS/DATA BUS

4V

16.8ms

4V

64 s

FLASHROM U36

RAM

U29

EEPROM I/F

U42

D/A CONV. I/F

U42

EEPROM

U48

GDC

MARK/ CHARACTER

U33

ADDRESS/MULTIPLEXER U42

H/V SYNC

VRAM

U43: MARK 0/1 U44: CHARACTER

MASK

U43, 44GRAPHIC DATA

ADDRESSDECODER

U42

CS ROMCS RAM

To U15 #3 STC VS *1ANT HIGHTLow: approx 4.5 VMid: approx 3.7 VHigh: approx 3 V

#16, 17

U21

D/A CONV.

#8

#7

#6

#13

#12

CONTRAST VOLTAGE(MAX:approx 5 V, MIN: approx 2 V

F VT(MAX: 5 V, MIN: 1 V)

C VT(MAX: 5 V, MIN: 1 V)

MBS LVEL(For MBS , adjustment setting off 000: 0 V, 025: 4 V)

#5

#3

U5

#8

From DATA BUS SPEED

From U3, 4

From U32 #21

From U45 #61

From U42 #53

From U16 #10

GYRO

TRUE HD

BP (4096 pulse)

TRUE TRIG

VIDEO(GSC video)

FR-7062 manual tuningMAX: 11.9 V displayed, 13 V measuredMIN: 1 V displayed, 2V measured

FR-7112/7252 manual tuningMAX: 32 V displayed, 33 V measuredMIN: 1 V displayed, 2 V measured

For ARP-10

*1:Changes STC curve depending on menu setting such as ANT height and STC curve *2:Short(PL A: 0 V, PL B: 0 V Middle(PL A: 12 V, PL B: 0 V), Long(PL A: 12 V, PL B: 12 V) M1832-SME-10

2-4

4

5

6

2. Signal processor (SPU-9211)

G/A

U46

approx.

2-5

Automatic Tuning

There are two types of automatic tuning: peak search and short search. The tuning voltage differsfrom model to model.

FR-7062: 1 V to 12 V

FR-7112/7252: 5 V to 28 V

Peak search: Tuning voltage (TUNING), Point @ in the figure below, is searched in the tuning voltage range 1 V to 12 V(FR-7062) or 5 V to 28 V(FR-7112/7252). Tuning indicator

voltage (TUNNIG IND) is maximum at point @ .

After initial tuning adjustment, “peak search” is carried out for approximately 3 seconds.

Short search: Maximum tuning indicator voltage @ is searched in the tuning voltage range of @ - 2.5 V to @ + 2.5 V.

Search conditions: 1) After initial tuning adjustment.

2) When tuning mode is switched from manual to automatic. 3) When the radar is switched from ST-BY to TX. 4) When a range where pulselength is changed from short to middle and from middle to long is selected.

Tracking: After short search, tracking takes place.

Tracking voltage: 0 V to 13 V (FR-7062), 0 V to 32 V (FR-7112/7252)

@

@

(a) (b)(c)

Tuning voltage(TUNE)

13 V

1 V

28 V

5 V

Tuning indicator(TUNING IND)

Restores previous pulselength

0 Time

FR-7062

FR-7112/7252

Pulselength: LP LP MP SP

Peak search Short search TrackingM1832-SME-11

2-6

Tuning indicator

After tuning adjustment, peak TUNING IND voltage, (a), (b) and (c) in the figure on page 2-5 arestored on to E2PROM. The automatic and manual tuning point @ is also memorized. Using thesedata, the tuning indicator extends more than 80 % of its full length on all TX pulses at best tuning.

Note that the length of tuning indicator on short pulse is shorter than on long ranges. The length onlong ranges becomes shorter when the magnetron deteriorates.

Manual tuning

Manual tuning and adjustment are required when automatic tuning is abnormal (that is , low sensitiv-ity).

The manual tuning voltage changes from 1 V to 12 V on FR-7062, and 5 V to 32 V on FR-7112/7252at the steps of about 0.1 V.

Manual tuning is carried out by using trackball: pressing “Left” side decreases TUNING CONTvoltage, and pressing “Right” side increases.

The TUNING CONT voltage displayed on the screen differs by -1 V to +1 V from measured voltageat J104 #10.

Tuning cont. Signal at power-on

A square wave is output as a TUNING CONT signal during stand-by just after power-on. The coarseand fine tuning circuit is normal if the following signal is output.

CPU

U32

D/ACONV.I/F

D/ACONV.

3, 410Trackball

FR-7062: 0 to 2 VFR-7112/7252: 0 to 5 V

U42 U21

×1F VT

0 to 5 V

#5 #7

#8#10

×6C VT #3 #1

U5

SUMTUNING CONT.(to RF unit)

FR7062-SME-10B

J104J108

5, 6

0V

5 V

13 V

C VT

F VT

FR-7062

0V

5 V

34 V

C VT

F VT

FR-7112/7252FR7062-SME-12

2-7

Video Adjustment

The video adjustment is carried out through the Tune/video adjustment menu in the installation setupmenu.

The following describes the outline of the adjustment.

(a) Main Bang suppression Level (MBS L) is set to 0.

(b) EEPOT, U14 is set to minimum. (EEPOT initialization with U14 #7 of “L” level)

(c) The EEPOT gets into step-up mode (U14 #2 is H) to measure output video level at each step. The step is changed by receiving pulses on U14 #1. The step, where the output level is 2.2 V, is memorized. The EEPOT has 32 positions (steps).

(d) The EEPOT gets into step-down mode (U14 #2 is L) to find and store the step number where the output level is 2.2 V. (e) Averaging the step numbers found in steps (c) and (d) above and saving it onto the EEPOT take place. The stored value is not erased when power is removed.

(f) MBS L is reset to the value used previously.

Heading

Heading data in AD format or NMEA format (HDT, HDG, HDM, VHW) can be input from J104(HDG). The radar determines whether AD format heading data is supplied or not with received CLKdata (J104 #14, #15). If CLK data is normal but the DATA line is abnormal, the heading is continu-ously shown as ***.*. (Note that the same indication appears when noise in the CLK line causesheading data of higher than 360.0 degree.)

The radar can read AD format data in 25 msec or 200 msec interval. However, we recommend that25 msec be used. The ideal input interval for NMEA 0183 data is also 25 msec. When the radar isconnected with the equipment whose input interval is 1 sec, heading data is updated too slowly,which results in delayed rotation of the picture when the ship turns.

Switching of NAV data (NMEA 0183)

NAV data from NAV data ports, J104 (#3, #4) and J104 (#5, #6), are alternately selected by the CPUin the following manner.

Two inputs: Data from J104 (#3, #4) and J104 (#5, #6) are automatically switched every five sec-onds.

EEPOTVIDEO(From IF AMP)

32 step

Step: (a)(b) (c) (e) (f)UP Down

EEPOT(VIDEO output)

2.2 V

FR7062-SME-12A

(d)

2-8

One input J104 (#3, #4): For three minutes after the power is turned on the data from J104 (#3, #4)and J104 (#5, #6) are automatically switched every five seconds to determine which port is inputtingNAV data. When J104 (#3, #4) alone is inputting NAV data, data is automatically switched at J104(#3, #4) after 25 seconds and after 5 seconds at J104 (#5, #6).

Turning on/off antenna rotation

The SPU board controls antenna rotation. In normal operation, the antenna rotates only during theTX condition. However, the antenna can be stopped during the TX condition thru the installationsetup menu.

Verification of ARP connection

At every power-up, SPU board checks whether ARP-10 is connected or not, using data line betweenSPU and ARP boards.

If a target cannot be acquired or “ ARP” line does not appear in the self test display, the data linemust be checked. When CR1 on the ARP board lights, the ARP board may be defective.

TX key pressed

3 17 17 11

J101 J103J203

DJ1

J201

CPU

U32

G/A

U40

ANT SW ANT SW

TX: 0 VST-BY: 5 V

SPU Board

11

INT9234 Board

11

4

J2

PTU-9149 Board

+12V

RelayK2

MOTOR(+)To scanner motor TX: 12 V ST-BY: 0 V

FR7062-SME-10C

J1

TX keypressed

3 17 17 11

J101 J103J203

DJ1

J201

CPU

U32

G/A

U40

ANT SW ANT SW

TX: 0 VST-BY: 5 V

SPU Board

27

INT9240 Board

11

4

J2

PTU-9149 Board

+12V

RelayK2

MOTOR(+)To scanner motor TX: 12 V ST-BY: 0 V

FR7062-SME-10C

J1

FR-7062/7112

FR-7252

2-9

3. ARP circuit (18P9002)

The block diagram of the ARP Board is shown below.

BLOCK DIAGRAM OF ARP PCB

1) Unlike other existing ARPs ARP-10 does not require QV echo adjustment at installation. No check point for QV echo is provided. The ARP display can be turned on/off thru the ARP menu. The ARP data display appears even when ship’s speed and gyro data are not supplied.

2) The ARP board is checked whether it is installed or not at every power-on, using the communication line between SPU and ARP boards.

When the ARP display is on thru the menu and ARP board is not fitted, the message “ARP is not connected “ appears.

3) If the target is not acquired, carry out the self-test at TX condition.

TRIGGER/VIDEO/BP/HD must be OK, and FE-DATA 1/DATA 2 must vary depending on the gain setting. The lower the gain setting, the smaller the FE DATA value. The FE DATA must not exceed 1000 with the maximum gain setting.

4) The program is stored on the Flash ROM, not PROM, so a program writer MT-08 or PC is required for updating the program.

CPU

TIMER(10ms)

FLASH ROM2M Byte (U11)

I/F for SPU communication(U14, 15, 16, 23, 24)

RAM 512K bit(U9,10)

DMA

UARTRECEIVER

UARTTRANSMIT

U13 V821 (µPD70741GC-25)CR1 (Blinks 1 sec)

ARP Board (18P9002)

TARGET DATA(TTM: CURRENT LOOP)

Not USED

J3

TX1H

TX1C

A7

A11

A13A2A3

A17

A4

EXT TXD

TRUE HD

TRUE TRG

GYRO DATA, CLOCK

LOG

SCAN INT

RX1H

RX1CTP6 (Factory use)

(Output from NMEA 1 via SPU)

TP5(Factory use)

TP7(CLK OUT)

FEFront End signalprocessor (U3)

Width,Flags,Range/azimuth,Time

PROGRAM/DATA

(256 K bit × 2)

NMEA ship's speed data input

(18S9010)

TRUE HD

TRUE TRIG

GYRO (AD Format, 25msec)

LOG (Contact signal): Not used

BP (4096/rotation)

RAM (U4, 5)512K bit

A/D CONV.

Echo data temporary memory(256 K bit × 2)

TP1, 9

TP4

TP8

TP241.446MHz U1

A9 VIDEO

FR7062-SME-09B

J107

1

2

3

4

2-10

Target acquisition

Conditions for manual acquisition

1) Within 9 scans, the target must be detected near the cursor position.

2) Target echo must be smaller than land echo (800 m or less in the radial or circumferential direction) at the front end processor.

3) Target must be within acquisition area: 0.1 to 16 nm.

4) The number of acquired targets is not as many as 10, including the target automatically acquired.

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

Conditions for automatic acquisition

1) The target must be detected for five consecutive scans within the automatically acquisition area.

2) Target echo must be smaller than land echo (800 m or less in the radial or circumferential direction) at the front end processor.

3) Target must be within acquisition area: 2.0 to 2.5 nm and 45 degree each side of heading line.

4) The number of acquired targets is not as many as 10, including the target manually acquired.

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

Automatic tracking

1) A tracking target is judged as a lost target when no return is received for nine consecutive sweeps. When the system detects a loss of a tracking target, the target symbol becomes a flashing diamond.

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 16 nm)

Target discrimination

A target measuring about 800 m or more in the radial or circumferential direction is regarded as alandmass and not acquired or tracked. Echoes smaller than about 800 m are regarded as true target.

2-11

Program No : 0359146-1xxROM : OKRAM : OK

Hours in use 000026.6HTX hourse 000012.7H

[Self test]Key test: Press each key and

check on-screen indication lights

ARP-10 TESTROM OK 1859027101xxRAM OKSPEED OK NAV 0.0KTCOURSE OK 287.6°TRIGGER OKVIDEO OKBP OKHP OKMIN-HIT 0003SCAN-TIME 0250MAN-ACQ 03AUTO-ACQ 05FE-DATA1 0217FE-DATA2 0023

ARP test items(test must be made in TX)

Program number andrevision level.

FR7062-SME-09C

ARP Self-test

Items Description

ROM U11 checksum

RAM Operation of U9 and U10

SPEED NMEA 0183 speed data input

COURSE Bearing data from GYRO

TRIGGER TRU TRIG signal from SPU board

VIDEO VIDEO signal from SPU board

BP Bearing signal (4096 pulses) from SPU board

HP Heading signal from SPU baord

MIN-HIT 3 for more

SCAN-TIME HP input interval (250=2.5 sec)

MAN-ACQ Number of manually acquired target

AUTO-ACQ Number of automatically acquired target

FE-DATA 1 Number of output echoes from front end signal processor. If this value is "0" with maximumgain, the ARP board may be faulty

FE-DATA 2 Number of echoes with a land flag

185902710XX Program number of ARP board

NAV AD format (GTRO) only: 0.0 kt and gyro readingAD format (GTRO) plus NMEA: speed and course in NMEANMEA only: speed and course in NMEA

FR7062-SME-13

2-12

4. TTM data sentence format

TTM data is output from J111 on the SPU board and NMEA1 I/O connector in the following format.

Hardware: RS-232C(J111), Current loop(NMEA1 I/O connector)Software: NMEA 0183 (Ver 2.0)TTM: Tracked target message

1. Target number, 00 to 99

2. Target distance from own ship

3 & 4. Bearing from own ship, degrees true (T)

5. Target speed

6 & 7. Target course, degree true/relative (T/R)

8. Distance of closet point of approach (00.00 to 99.99 nm)

9. Time of CPA (00.0 to 99.9 min)

10. Speed/distance units (N: nm)

11. User data (e.g. target number data)

12. Target status (see note)

13. Reference target (R)

14. Type of acquisition (A= automatic, M= manual)

NOTE) (1) Target status:

L= lost, tracked target has been lost

Q= query, Target in the process of acquisition

T= tracking

E= end. end of tracked (Enforced termination)

(2) x.x: Variable length

$RATTM, xx, x.x, x.x, a, x.x, x.x, a, x.x, x.x, a, c--c, a, a, a <CR><LF>

1314

121110

14

987654321

FR7062-SME-09E

2-13

2.3 Transceiver Unit

1. MIC & Amplifiers

The following description is for reference only.

As a general rule of thumb, the radar requires better noise figure (NF) and better dynamic range.Both factors, however, are reciprocal. The NF affects long range performance, while the dynamicrange dose short range performance.

MIC w/RF amplifier: RU-9253/9371 (FR-7112/7252)

MIC w/o RF amplifier: RU-9390 (FR-7062)

W.G.TOCOAX CONV.

LIMITER RF AMPDOBLE-BALANCEDMIXER

IF AMP

FET OSC. POWER

1

9

IF OUT

IF TUNE

74(-9V) MBS

RF IN

(-9V)5

TUNING CONT.(+2~+11V)

3(+9V)

W.G. TOCOAX CONV.

FET AMP IF HYBRID

FET OSC. FET Buffer

IF OUTRF IN

(+5V) TUNING CONT.(+5~+35V)

Block Diagram of MIC RU-9390 (FR-7062)

Block Diagram of MIC RU9253 (FR-7252)

POWER

DOBLE-BALANCEDMIXER

FR7062-SME-15

W.G. TOCOAX CONV.

FET AMP IF HYBRID

FET OSC. FET Buffer

IF OUTRF IN

(+5V) TUNING CONT.(+5~+35V)

Block Diagram of MIC RU9371 (FR-7112)

POWER

DOBLE-BALANCEDMIXER

FR7062-SME-15

2-14

51IF

TP

1

J612

FR

7062

-SM

E-1

6

IF B

andw

idth

se

lect

LOG

AM

P(I

C)

U1

LOG

AM

P(I

C)

U2

LOG

AM

P(I

C)

U3

Mix

erQ

1, 2

Buf

fer

AM

PQ

3, 4

Tun

ing

AM

PQ

8, 9

Buf

fer

AM

PQ

13, 1

4

TP

3

IF

IF

TP

2

IF

IF

IF (

SU

B)

IF(M

AIN

)

VID

EO

Reg

ulat

or (

-9 V

)U

6

Reg

ulat

or (

+7

V)

U7

TP

7

TP

5

To

LOG

AM

P (

IC)

Reg

ulat

or (

+5

V)

U9

IF A

MP

Boa

rd (

IF-9

214)

J611

TU

NIN

G IN

D.

J613

BA

ND

WID

TH

J611

VID

EO

J613

+12

V

J613

J611

TU

NIN

G C

ON

T.

MB

S. S

IG

IF O

UT

TU

NIN

G C

ON

T.

To

MIC

VID

EO

Det

ectio

nQ

10, 1

19

TP

6

4-9

V

To

U9

32 1 131271

Reg

ulat

or (

+9

V)

U8

Wav

e fo

rm s

happ

ing

U5,

Q16

Gat

e fo

r tu

ning

U5,

Q17

MB

SQ

15

5

7M

BS

(-9V

)

LOG

AM

P(I

C)

U4

IF (

TU

NE

)

+9

V

-12V

J613

13M

BS

. LJ6

11

BLO

CK

DIA

GR

AM

OF

IF-9

214

2-15

21IF

TP

601

J612

FR

7062

-SM

E-1

7

Cas

cade

AM

PQ

601,

602

IF B

andw

idth

sele

ctLO

G A

MP

(IC

)U

601

LOG

AM

P (

IC)

U61

0LO

G A

MP

(IC

)U

602

Mix

erQ

625,

626

Buf

fer

AM

PQ

627,

628

Cas

cade

AM

PQ

609,

61LO

G A

MP

(IC

)U

603

Tun

ing

AM

PQ

614,

615

Buf

fer

AM

PQ

619,

620

TP

603

IF

IF

TP

602

IF

IF

IF

IF

IF

VID

EO R

egul

ator

(-9

V)

U60

2

Reg

ulat

or (

+9

V)

U60

8

Reg

ulat

or (

+7

V)

U60

6

TP

607

TP

605

To

LOG

AM

P (

IC)

Reg

ulat

or (

+5

V)

U60

9

IF A

MP

BO

AR

D (

IF-9

099

B) 4

1J6

11T

UN

ING

IND

.

J613

7B

AN

D W

IDT

H

12J6

11

VID

EO

1J6

13

-12V

13J6

11

2 9

J613

J611

TU

NIN

G C

ON

T.

+12

V

R M

ON

ITO

R

IF O

UT

TU

NIN

G C

ON

T.

+5VTo

MIC

VID

EO

TP

606

5J6

11M

BS

.L

5M

BS

.SIG

J613

Wav

e fo

rm s

happ

ing

U61

2, Q

630

MB

SQ

603

Gat

e fo

r tu

ning

Q63

5, 6

36

LOC

K D

IAG

RA

M O

F IF

-909

9 D

2-16

2. Modulator

PRINCIPLE OF FET SWITCHING MUTILATOR

High voltage is charged into C through R while the magnetron is inactive. When the trigger is applied tothe power MOS-FET, the FET turns on and the high voltage appears at the primary winding of the pulsetransformer. This transformer boots the voltage, which makes the magnetron oscillate.

One advantage of this method is that the magnetron oscillates only when the FET is conducive, thatis, the transmission pulsewidth can be changed by the TX trigger pulsewidth. Therefore, parts suchas relay and coil can be eliminated.

MODULATOR BOARD 03P9235

The modulator circuit, consisting of a modulator trigger circuit, a pulse generator, and a boostertransformer, produces a narrow high tension pulse which drives the magnetron.

A modulator trigger circuit is composed of U805 and associated parts. U805 is turned on by receiv-ing the TX trigger pulse from the display unit and generates the FET drive signal for Q805 and Q806.The pulse from the FETs is boosted up to 4.5 kV by the pulse transformer T802. The magnetroncurrent is adjusted to 3.5 A on this circuit.

The modulator board also includes a TX high tension circuit and magnetron heater circuit. TX hightension about 330 V is developed across T801 secondary winding and charged into capacitors untilthe presence of TX trigger pulse.

The magnetron heater voltage is +7.6 V stabilized.

PULSE TRANS

TRIGGER

MAGNETRON

MOS-FET

DischargeCharge

HIGH VOLTAGE

M821-SME-18

R

C

2-17

GN

D

MA

G.C

UR

P/L

A

BW

P/L

B

TX

TR

IG6 8 97

+ 1

2V

- 12

V4,

5

1,2 J

801

J P

801

LM

Ban

dwid

th S

elec

tQ

807

FE

T S

witc

hing

Q80

5, 8

06

Fee

dbac

kU

803

Ove

rcur

rent

Det

.U

802

PW

M,

Sw

itchi

ng R

eg.

U80

6

PF

NU

805

J 80

6T

P 8

01

TP

802

T80

2

VR

801

CO

NS

T, V

OLT

, P

RE

SE

T.

MA

G. C

UR

.P

RE

SE

T.

Pul

setr

ans

T80

2

65H

EA

TE

R (

+7.

6V)

4

+20

V32

To

MA

GN

ET

RO

N

TX

-HV

(+

10V

)1

T80

1

TP

804

Q80

1

J 80

1

J 80

3M

OD

ULA

TO

R B

OA

RD

03P

9235

FR

7062

-SM

E-1

9

3G

ND

Pro

tect

Q81

0,81

1,81

2

CR

802

CR

802

CR

803

CR

801

R 8

08R

809

R 8

61

NC

L 80

4

CR

806

Driv

erQ

802,

803

,

808,

809

VR

802

+ 1

2V NC

GN

D

- 12

V1 3 72

J 80

4

NC

4 5M

BS

. SIG

6

BW

8N

C

R84

9

CR

809

C82

9

TB

801

TB

802

BLO

CK

D

IAG

RA

M O

F 0

3P92

35

2-18

1T

X. H

V

2 31

2 V

5M

AG

-C

47

.5 V

6(*

) H

V-G

ND

72

0 V

8T

X-T

RIG

9P

/L-

A

10

P/L

- B

11

MB

S-S

IG

12

(*)

TR

IG-G

ND

1 2

J80

1J8

02

To p

uls

e

tra

nsf

orm

er

FE

T M

OD

.Q

6,

Q7

, Q

8,

Q9

JP2

VR

1M

AG

. C

UR

. P

RE

SE

T(*

)

JP1

TX

TR

IG.P

UL

SE

WID

TH

U1

DR

IVE

RQ

2,

Q3

, Q

4,

Q5

MA

G.

CU

R.

DE

TE

CT

OR

Q1

0,

R1

9,

R3

0

03

P9

23

7

1 2

J80

3

* H

V-G

ND

, TR

IG-G

ND

, a

nd

m

ag

ne

tro

n c

urr

en

t d

ete

cto

r g

rou

nd

are

iso

late

d o

n t

he

bo

ard

03

P9

23

7,

but

the

se a

re s

am

e p

ote

ntia

l aft

er

the

bo

are

d is

fitte

d a

nd

wire

d in

th

e R

F u

nit.

FR

70

62

-SM

E-1

9A

J80

1

To p

uls

e

tra

nsf

orm

er

BLO

CK

D

IAG

RA

M O

F 0

3P92

37

2-19

MODULATOR BOARD 03P9239 for FR-7252

The purpose of this board is to drive a pulse transformer RT-9203. The drive circuit consists of eightMOSFETs Q23, Q28, Q33, Q38, Q43, Q48, Q53, and Q58.

Drain current of the MOSFETs is determined by gate voltage and source resistors R23, R28, R33, R38,R43, R48, R53, and R58 (0.47 ohms, 1W). Gate voltage set to 18 V drops by 10 V across the sourceresistor (drain current of about 22A). Gate-source voltage of the FET is 8 V.

Magnetron current to be measured is generated across R7/R8 (2.0 ohms, 1/4W). Magnetron current isadjusted with VR11 on the 03P9238 board so that TP3 on the 03P9238 board is 7.1 to 7.3 V. (VR11adjusts V.TRIG voltage, TP2 on the 03P9238 board, resulting in magnetron current adjustment; TP2 isabout 20 V.)

The voltage produced R7/R8 is also used to generate a trigger for main bang suppression (MBS SIG).

03P9239

TX-HV

TRIG.

R1, R2

1

J813

SNUBBER CR1, CR2R5, C5R12~R15

DRIVERQ1, Q2

MOS FETGATE DRIVER

Q21, Q22, Q31, Q32Q41, Q42, Q51, Q52Q26, Q27, Q36, Q37Q46, Q47, Q56, Q57

C1 to C4

PULSE TRANS-FORMER DRIVER

Q23, Q28, Q33Q38, Q43, Q48Q53, Q58

SOURCE RESISTANCER23, R28, R33, R38R43, R48, R53, R58

FILTERC7, C8L1

J811

5 2

1

2

J812

Mag. Heater (+)

(-)

2.0Ω

R7, R8

MAG. CUR. DETECTOR

CR3, CR5, CR6C12, R11, C9, C10

MBS SIG DETECTCR4, C11

9

J811

Mag. cur.

10

J811

MBS. SIG.

MAGNETRONV801(M1458F)

PULSE TRANSFORMER

T801(RT-9023)

1/4Wx2

FR7062-SME-19B

J8141

7

J811

8

BLOCK DIAGRAM OF 03P9239

2-20

03P9238

7P/L- A

8P/L- B

1, 2+12 V

6TX-TRIG

J801

J801

9Mag. Cur.

J807

J801 J807

JP2

JP1M

L

BW select Signal BufferQ61

Heater Voltage SelectorU22, Q72

Magnetron Current BufferQ71

+5 V Regulator U31

V. TRIG Switching RegulatorU11, CR11

DriverQ41, Q43, Q44

Magnetron Heatervoltage Regulator

Q21, U21

VR11Magnetron Current Adjuster.

TX TRIG pulsewidth selectorU32, Q31, Q32, CR33,

CR34

M L

5 TRIG

J807

3 V. Trig.

J802

5 Mag. Cur.

J801

9 BW

8 Mag. Heater (-)

J807

7 Mag. Heater (+)

+5 V

FR7062-SME-19D

TP 2TP 2

TP 3

RFC Board 03P9238 for FR-7252

There are three regulators on this board: U11, Q21 and U21, and U31.

Switching regulator U11 and associated parts produce a signal “V. TRIG” which controls magnetroncurrent produced on the 03P9239. The output is adjusted by VR11 so that the magnetron current is7.1 V to 7.3 V.

Regulator Q21 and U21 generates magnetron heater voltage. The heater voltage selector consistingof photo coupler U22 and Q72 selects the heater voltage either 8.3 V or 7.0 V. When magnetroncurrent becomes 2 A or more on long range, U22 comes on and the heater voltage J807 #7 and #8 isreduced from 8.3 V to 7.0 V.

+5 V regulator U31 is a three terminal regulator which produces regulated +5 V for the TX triggerpulsewidth selector U32, Q31, Q32, CR33, and CR34. The pulsewidth changes depending on therange in use. The range data, short range, middle range, and long range is a combination of twosignals P/L A and P/L B.

The TRIG signal generated by the TX trigger pulsewidth selector is amplified by the driver circuitQ41, Q43, and Q44, and output from J807 #5.

BLOCK DIAGRAM OF 03P9238

2-21

Power Supply Board 03P9236 for FR-7112

1.2

+12

3G

ND

4.5

-12

6T

X-T

RIG

7P

/L-A

8P

/L-B

9B

, W,

10M

BS

-SIG

1T

X H

V

3+

12V

4+

7.5V

5M

AG

-C

7+

20V

8T

X-T

RIG

9P

/L-A

10P

/L-B

11M

BS

-SIG

12G

ND

6G

ND

J851

J852

J852

J852

PU

LSE

WID

TH

MO

D,

SW

ITC

HIN

G IN

V.

U

51

OV

ER

CU

RR

EN

TD

ET

EC

TO

R

U

52F

EE

DB

AC

KU

53

TP

53

T51

CO

NS

T.V

OLT

.PR

ES

ET

VR

51

JP51

JP2

JP1

BA

ND

WID

TH

SE

LEC

TQ

52

MB

S-S

IG D

ET

EC

TO

RC

R55

, R71

, C70

03P

9236

FR

7062

-SM

E-1

9C1T

X H

V

2 3+

20V

4+

7.5V

5M

AG

.C

6+

20V

J857

J851

BLO

CK

D

IAG

RA

M O

F 0

3P92

36

2-22

2.4 Differences between PCBs

1. SPU Board (SPU-9211)

This board is set at factory for use in the FR-7062. For use in the FR-7112 or 7252, change the factorymenu as below.

While pressing and holding down the GAIN (HM-OFF) control, press the [MENU] key five times todisplay the factory menu.

1) MAX range

64: FR-7062 ; 72: FR-7112; 96: FR-7252

2) Type

R: Regular; G: German; N: Nethland; K : Korea

Select R-type usually. G- and N-types are the same as R-type as of April 1998.

K-type is the same as R-type, but range ring is complied with IMO standard.

3) Model

Selects the Antenna Unit (MIC).

7062: FR-7062; 7112/7252: FR-7112/7252

4) Language

JPN: Japanese; ENG: English

5) Default Setting

Default settings (except factory menu) can be restored by selecting Default Setting and pressing the [ENTER] key three times, and then restart radar. After changing the setting,

the installation adjustment (heading, timing, etc.) must be carried out again.

[Factory MENU]♦ Select item by T-Ball ♦

1. Max Range 64 72 962. Type R G N K3. Model 7062 7112 72524. Language JPN ENG

5.Default Setting ENTER x 3

< Press MENU key to escape >

FR7062-SMJ-09D

2-23

2. PTU-9149 Board

There are two types of PTU-9149 board depending on the input voltage: PTU-9149 and PTU-9149A.Both boards are interchangeable if jumper settings are changed as below.

PTU-9149 (for FR-7062/7112, input of 10.2 to 41.6 V)

Jumper settings: 1-2, 3-4, 5-6, and 7-8

PTU-9149A (for FR-7252, input of 21.6 to 41.6 V)

Jumper settings: 2-3 and 6-7

3-1

Chapter 3. ADJUSTMENT

WARNING

Do not set the radar to TRANSMIT with the scanner cover opened or with the an-tenna disconnected. Not only the unit may be damaged, but also there is radiationhazard. Stop the antenna through the menu, and connect the dummy antennato the RF unit when transmitting.

Hazardous Voltage

This equipment uses high voltage electricity which can SHOCK, BURN or causeDEATH.

Always make sure the electrical power is turned is turned off before attempting tochange a component or inspecting the inside of the equipment. A residual charge mayexist in capacitors, even with the equipment turned off. Always short all supply linesto the chassis with an insulated screwdriver or a similar tool before touching thecircuit.

Working on the Scanner Unit Mast

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

1. Post an appropriate warning sign near the display unit to indicate that work on the scanner unit is being performed, to prevent accidental application of the power to the scanner unit.

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

DANGER

3-2

3.1 Adjustment of display unit

Location of PCBs in Display Unit

Displa Displa Displa Displa Display Unit,y Unit,y Unit,y Unit,y Unit, F F F F Frrrrront Side of ont Side of ont Side of ont Side of ont Side of VVVVVieieieieiew (FR-7062/7112/7252)w (FR-7062/7112/7252)w (FR-7062/7112/7252)w (FR-7062/7112/7252)w (FR-7062/7112/7252)

DisplaDisplaDisplaDisplaDisplay Unit,y Unit,y Unit,y Unit,y Unit, Rear Side of Rear Side of Rear Side of Rear Side of Rear Side of VVVVVieieieieiew (FR-7062/7112)w (FR-7062/7112)w (FR-7062/7112)w (FR-7062/7112)w (FR-7062/7112)

Displa Displa Displa Displa Display Unit,y Unit,y Unit,y Unit,y Unit, Rear Side of Rear Side of Rear Side of Rear Side of Rear Side of VVVVVieieieieiew (FR-7252)w (FR-7252)w (FR-7252)w (FR-7252)w (FR-7252)

FR7062-SMJ-27

FR7062-SMJ-28

FR7062-SMJ-29

OPTION CONNECTOR

DJ-1 CONNECTOR

HDG CONNECTOR

NMEA 1 I/O CONNECTOR

NMEA 2 IN CONNECTOR FUSE (F 1351)

POWER CONNECTOR

OPTION CONNECTOR DJ-1 CONNECTOR

HDG CONNECTOR

NMEA 1 I/O CONNECTOR

NMEA 2 IN CONNECTOR FUSE (F 1351)

POWER CONNECTOR

3-3

Inside of Display Unit, Right Side of View (FR-7062/7112)

Inside of Display Unit, Right Side of View (FR-7252)

18P9007(Option)

18P9007(Option)

SPU-9211SPU-9211

SPU-9211

SPU-9211

FR7062-SMJ-32FR7062-SMJ-33

FR7062-SMJ-30 FR7062-SMJ-31

3-4

Inside of Display Unit, Left Side of View (FR-7062/7112/7252)

Inside of Display Unit, Top Side of View Inside of Display Unit, Top Side of View

(FR-7062/7112) (FR-7252)

FR7062-SMJ-36FR7062-SMJ-37

FR7062-SMJ-34

PTU-9149

CRT BoardHV-9017CRT Board

3-6

Location of parts on SPU-9211

Test point on SPU-9211

FR7062-SMJ-40

J102

J106

J119

TP6

TP5

TP7

J105

J104

TP1

TP3

TP4

J103

TP5

J107

TP8

J110

J101

Test

PointTest Item Ratings Remarks

TP1 BEARING 0.7 V pp (180 Hz, 450 pulses/rotation)

TX ConditionTP2 TRIGGER

8 to 12 V

(Neg. polarity, pulsewidth: 10 to 20 µs,

Short range: 2000 to 2300 Hz)

TP3 VIDEO - 3.0 to -3.4 Vpp

(Neg. polarity, Main bang level)

TP4 STC Curve

4 µs: 1.0 V to 1.2 V

20 µs: 1.9 V to 2.3 V

40 µs: 2.4 V to 2.8 V

60 µs: 2.8 V to 3.4 V

90 µs: 3.7 V to 4.5 V

Ant height: Mid

STC curve: Std

GAIN VR: MAX

A/C SEA: MAX

TP5 H SYNC 4 Vpp (Neg. polarity, approx. 64 µs)

TX ConditionTP6 V SYNC 4 Vpp (Neg. polarity, approx. 16.8 ms)

TP7 VIDEO - 4 Vpp (Neg. polarity, Main bang level)

TP8 OSC 77.6 to 77.8 MHz

FR7062-SME-24

3-7

Location of parts on SPU-9211


FR7062-SMJ-42

TP8

TP9

TP6

TP3

TP5

TP4TP1

CR1

TP2

TP3

P107

Test Point Test Item Ratings Remarks

TP1,9 GND - -

TP2 OSC 41.6 MHz -

TP4 TRUE TRIGGER 5 Vpp (Neg. polarity) TX Condition

TP7 CLK OUTPUT 207.23 MHz -

TP8 QV OUTPUT -4 Vpp (Neg. polarity,Main bang level) TX Condition

FR7062-SME-24A

3-8

Location of parts on PTU-9149


J1301

FR7062-SMJ-38

JP1

VR4VR3

VR1

TP1

J2

J4

J1J3

VR2

TP2

TP3

Test Point Test Item Ratings VR No Remarks

TP 1 +10 V 8.2 to 9.5 V - -

TP 2 DC(-) - - -

TP 3 Inverter

Frequency 85.5 to 94.5 kHz -

-

TP 4 -

TP 31 +12 V 12.1 to 12.3 V VR 1 -

TP 32 +5 V 4.9 to 5.1 V VR 2 -

J1 #2 (+)

J1 #7

(GND)

-12 V -11.6 V to -12.8 V - -

J1 #3 (+)

J1 #7

(GND)

+32 V 30.0 to 35 V - -

FR7062-SMJ-26

3-9

Location of parts on HV-9017 (FR-7252)


FR7062-SMJ-27

J482

JP1

CR21 (RED)

CR23 (GRN)

VR1

TP1 TP2 TP3 TP4

JP2 J814


TP 1 Main inverter 34.7 to 35.3 Vdc VR 1 TP 1 (+), TP 2(-12V)

TP 2 DC(-) - - -12V

TP 3 Sub inverter


TP 2 , TP 3

TP 4 Main inverter

Frequency TP 2 , TP 4

FR7062-SME-26A

3-10

Location of parts on CRT

NOTE: The CRT is used with the rotation by 90 degrees.Therefore, the indication “V” and “H” correspond tohorizontal and vertical, respectively.

Adjustment of CRT

CRT Board

FR7062-SMJ-29B

FR7062-SMJ-39

VR 202H.HOLD

VR 201H.POSI

VR 401V.HOLD

VR 403V.LIN

VR 402V.SIZE

VR 205SUB BRI

VR 204BRIGHT

VR 101CONT 1

VR 203FOCUS

L 204H.SIZE

3-11

5.59 µS

63.7 µS0 V

4 V approx.Horizontal Synchro(15.75kHz)

7.20 µS

44.7 µS

0.7 to 3.6 VppVideo Signal

6.21 µS

0.57 mS

16.7 mS0 V

4 V approx.Horizontal Synchro(60Hz)

0.83 (0.86) mS

15.3 mS

0.7 to 3.6 VppVideo Signal

FR7062-SME-33A

Synchro pulses and video signal

Timing Chart between Horizontal Synchro pulses and video signal

Timing Chart between Vertical Synchro pulses and video signal

3-12

3.2 Adjustment of Scanner Unit

Location of Parts in scanner unit (FR-7062/7112/7252)

Inside of Scanner Unit (RTR-060, 48rpm)

FR7062-SMJ-35

Magnet

Scanner MotorFR-7062 24rpm: RM-8025 48rpm: RM-8711FR-7112/7252 24rpm: RM-8367 48rpm: RM-8711

Transceiver Module FR-7062: RTR-059 FR-7112: RTR-060 FR-7252: RTR-061

3-13

Location of PCBs in Transceiver Module (RTR-059: FR-7062)

Transceiver Module (Top side)


Transceiver Module (Under side)

FR7062-SMJ-47

IF AMP board (IF-9214)

INT board (03P9249)

FR7062-SMJ-46

J821

J822

J826J829J828J825J824

J823

J827

MIC (RU-9390)

Circulator (RU-4356)

Magnetron (MG5389)

FR7062-SMJ-47A

MODULATOR Board (03P9235)

3-14

Location of parts on IF-9214

Test point on IF-9214



VR 2

FR7062-SMJ-44

J611

J613

TP 6

TP 5TP 1VC 2VC 1

J612

TP 2 VC 5 TP 8 TP 7 TP 3


TP 1 Bandwidth

correction Factory adjustment only VC1,2 -

TP 2 GND - - -

TP 5 +7 V 5.9 to 7.5 V - -

TP 6 -9 V -8.8 to -9.4 V - -

TP 7 +9 V 8.7 to -9.3 V - -

TP 8 Tuning

indicator Factory adjustment only VC5 -

J611 #9(-)

J613 #2(+)

MIC

(R. Monitor) 1.2 to 3.1 V - ST-BY

FR7062-SME-33

3-15

Location of parts on 03P9235

Test point on 03P9235

TP 802FR7062-SMJ-45J806VR 801TP 801VR 802

J804TP 804J803 J801

Test Point Test Item Ratings VR NoRemarks

TP 801 TX-TRIG

Short range: 2000 to 2300 Hz

Pulsewidth : 10 to 20 µS (All range)

Polarity: Positive Polarity (8 to 12 V)

- TX

TP 802 GND - - -

TP 804 Inverter


J803 #4, #6 Mag. Heater 7.55 to 7.65 V VR 801

ST-BY J803 #1, #6 TX-HV 11.0 to 12.3 V -

J803 #3, #6 +20 V 18.5 to 21.5 V -

J803 #5, #6 Mag. Current

1.40 to 1.60 V (Long)

1.25 to 1.65 V (Middle)

0.80 to 1.50 V (Short)

VR 802 TX

Long

FR7062-SME-33A

3-16




Transceiver Module, Cover removed (Under side)

IF AMP Board (IF-9099)

J821

INT Board (03P9250)

J822

J826J829J828J824J825J830

J827

J823

FR7062-SMJ-53

FR7062-SMJ-54

MIC (RU-9253/9371)

Circulator (RC-4356)

Magnetron (MG5241)

Pulse Transformer (RT-4427)


POWER Board (03P9236)

3-17

VC 601FR7062-SMJ-49

J107

TP 601 J613TP 606TP 604

J612

TP 602 TP 603 TP 605 JP 604 JP 605TP 607




TP 601 Bandwidth

correction

Factory adjustment

only

T 603

T 604-

TP 603 Tuning indicator Factory adjustment

onlyT 607 -

TP 605 +7 V 5.7 to 7.3 Vdc - -

TP 606 -9 V - 8.7 to - 9.3 Vdc - -

TP 607 +9 V 8.7 to 9.3 Vdc - -

J612 #2 +5 V 4.7 to 5.3 Vdc - ST-BY

J812 #10(+),

#14(-) R. Monitor 1.7 to 4.5 Vdc - ST-BY

FR7062-SME-33B

3-18



TP 2

FR7062-SMJ-51

J802

J803

J801JP 1TP 1

VR 1


TP 1 TX-TRIG




- TX

TP 2 GND - - ST-BY

J802 #5(+),

#6(-) Mag. Current

4.95 to 5.05 V (Long)

4.70 to 5.30 V (Middle)

4.70 to 5.30 V (Short)

VR1TX

Long

FR7062-SME-33C

3-19



TP 51FR7062-SMJ-52

J851

J852 J857

J854 TP 53

TP 52

VR 51


TP 51 GND - - -

TP 52 +12 V - - -

TP 53 Inverter


J803 #4, #6 Mag. Heater 7.4 to 7.6 V VR 51

ST-BY J803 #1, #6 TX-HV 8.6 to 9.7 V -

J803 #3, #6 +20 V 21.0 to 25.0 V -

J803 #5, #6 Mag. Current

4.95 to 5.05 V (Long)

4.70 to 5.30 V (Middle)

4.70 to 5.30 V (Short)

VR 1(03P9237) TX

Long

FR7062-SME-33D

3-20


Transceiver Module

Transceiver Module

Transceiver Module, Cover removed

FR7062-SMJ-56

FR7062-SMJ-58

Magnetron(M1458) MIC

(RU-9253)

Circulator(FCX 67)

Pulse Transformer(RU-9253)


RFC Board (03P9238)

INT board (03P9238)

FR7062-SMJ-55

J825

J829

J831

J828

J820

J824

IF AMP board (IF-9099)

J827

J826

J830

J823

J821

3-21

VC 601FR7062-SMJ-49

J107

TP 601 J613TP 606TP 604

J612

TP 602 TP 603 TP 605 JP 604 JP 605TP 607




TP 601 Bandwidth

correction

Factory adjustment

only

T 603

T 604-

TP 603 Tuning indicator Factory adjustment

onlyT 607 -

TP 605 +7 V 5.7 to 7.3 Vdc - -

TP 606 -9 V - 8.7 to - 9.3 Vdc - -

TP 607 +9 V 8.7 to 9.3 Vdc - -

J612 #2 +5 V 4.7 to 5.3 Vdc - ST-BY

J812 #10(+),

#14(-) R. Monitor 1.7 to 4.5 Vdc - ST-BY

FR7062-SME-33B

VC 601FR7062-SMJ-49

J107

TP 601 J613TP 606TP 604

J612

TP 602 TP 603 TP 605 JP 604 JP 605TP 607

3-22


FR7062-SMJ-59

J811

J812

J813J814

3-23



TP 1

FR7062-SMJ-60

J801

J802

J807

J808

VR 11

TP 2

TP 3


TP 1 TX-TRIG




- TX

TP 2 V TRIG 19.0 to 21.0 V

(Confirm this level after adjusting magnetron current)VR 11 ST-BY

TP 3 Mag. Current

7.10 to 7.30 V (Long)

5.20 to 7.40 V (Middle)

4.20 to 6.40 V (Short)

VR 11 TX

J802 #4(+),

#6(-) Mag. Heater

7.50 to 8.50 V (ST-BY)

6.30 to 7.40 V (TX)-

TX

LongFR7062-SME-33F

4-1

Capter 4. MAINTENANCE

4.1 Remarks on Replacement of Major Parts

WARNING

Do not set the radar to TRANSMIT with the scanner cover opened or with the antenna disconnected.Not only the unit may be damaged, but also there is radiation hazard. Stop the antenna through themenu, and connect the dummy antenna to the RF unit when transmitting.

Turn off the power before replacing any parts

Do not touch magnetron while the radar is transmitting. Sufficient high voltage exists at the magne-tron to cause death.

MAGNETRON

The magnetron emits a strong magnetic field. For this season, remove a wrist watch before perform-ing the replacement and use a non-magnetic screwdriver to dismount the magnetron. The estimatedlife of the magnetron is 2000 hours, (including time in stand-by), however actual life depends onusage.

1. Turn off the power.

2. Dismount the transceiver module.

3. Dismount and replace the magnetron.

4. When a new magnetron is fitted, allow at least 30 minutes under ST-BY for pre-heating. Turn on the power and measure magnetron current. See Chapter 3 for heater voltage rating, and potentiometer to be adjusted.

5. Transmit on long range and measure magnetron current. See Chapter 3 for magnetron current rating and potentiometer to be adjusted.

6. Reset “TX Hours” and “On Hours” on INSTALLATION SETUP menu. See page 4-3 for how to access this menu.

MIC

The MIC can be replaced individually. No adjustment is necessary after replacement.

SPU Board

Write down settings of MAIN and INSTALLATION menus before replacing the board. Then, afterreplacing the board, reenter setting. (Reason: Settings are stored in the E2 PROM (U48) on the SPUboard.)

IMPORTANT: After replacing the board, the factory menu setting must be carried out properly, otherwise the MIC will be damaged.

4-2

ROM

The SPU board uses Flash ROM (U36) to store a system program. The program version number canbe checked at “22. Self test” on the MAIN menu.

4.2 Life Expectancy of Expendable Parts

*1: Under normal operating condition.

*2: Hours during ST-BY are including.

[Self test]Key test: Press each key and

check on-screen indication lights

: 0359146-1xx: OK: OK

ARP-10ROMRAM SPEEDCOURSETRIGGERVIDEOBP HPMIN-HITSCAN-TIMEMAN-ACQAUTO-ACQFE-DATA1FE-DATA2

TEST1859027101xx

NAV 0.0KT 287.6û

0003 0250 03 05 0217 0023

OKOKOKOKOKOKOKOK

ARP test items (test must be made in TX.)

Program number and revision level.

FR7062-SME-09C

Hours in use 000026.6 HTx houres 000012.7 H

Program NoROM

RAM

Parts Type Code No. Life expectacy *1 Remarks

Scanner

motor

RM-8025 (24 rpm) 000-116-125 more than 10000 hrs. FR-7062

RM-8367 (24 rpm) 000-119-253 more than 10000 hrs. FR-7112/7252

RM-8711 (48 rpm) 000-122-318 more than 10000 hrs. FR-7062/7112/7252

Magnetorn

MG5389

E3560

000-135-146

000-139-050 more than 2000 hrs. *2 FR-7062

MG5241

E3566

000-100-036

000-141-073 more than 2000 hrs. *2 FR-7112

M1458 F

MG5436

000-140-344

000-140-762 more than 2000 hrs. *2 FR-7252

FR7062-SME-38

4-3

4.3 Menu List

RINGS (Off, 1, 2, 3, max)INDEX LINE (Off, On)DISP DATA (NAV, Auto plotter, NAV and Auto plotter)INT REJECT (Off, On)ARP MENUOTHER MENU

1.2.3.4.5.6.7.8.

9.10.11.12.13.14.15.16.17.18.19.20.

21.22.23.

Panel Dimmer (1, 2, 3, 4)Mark Brill (1, 2, 3, 4)HD Mark (1, 2, 3, 4)Characters (1, 2, 3, 4)Trail Tone (Single, Multi)Pulselength (Short, Long)Noise Reject (Off, On)Trail Time(15S, 30S, 1M, 3M, 6M, 15M, 30M, Cont)Tune (Auto, Manual)WPT Mark (Off, On)EBL Ref (Rel, True)VRM Unit (nm, km, sm)Watchman (Off, 5M, 10M, 20M)STBY Disp (Norm, Econo, Nav)Guard Mode (In, Out)Own Position (L/L, TD)Cursor Posi (B/R, L/L)Alm Sense LV (Low, Mid, High)Dead Sector (Off, On)Range(1/8, 1/4, 1/2, 3/4, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 36, 48, 64, 72, 96)* 2nd Rej (Off, On)Self TestInstallation Setup

MENU KEY

= Default setting

*Maximum range FR-7062: 64 FR-7112: 72 FR-7252: 96

Next page

a)

Next pageb)

4-4

Iustallation Setup b)

FR7062-SME-40A

1. Nav Talker (All, GPS, LC) 2. Depth Unit (m, fa, ft) 3. Temp Unit (C, ˚F)4. Hdg Sensor (Magnet, Gyro)5. Key Beep (Off, On)6. Ant on TX (Rotate, Stop)7. Dead Sector (180˚~180˚)8. Tune/Video Auto Adjustment 9. Heading Alignment10. Sweep Timing Adjustment11. MBS Adjustment12. Ant Height (Low, Mid, Hig)13. STC Curve (Sharp, Std, Gnti)14. Oper Mode (Master, Slave)15. Hours in Use (000000.0H)16. Tx Hours (000000.0H)

1. Display (Off, On) 2. All Cancel 3. Vector Ref (Rel, True)4. Vector Length (30S, 1M, 3M, 6M, 15M, 30M)5. History (Off, 15S, 30S, 1M, 2M, 3M, 6M)6. CPA SET (Off, 0.5nm, 1nm, 2nm, 3nm, 5nm, 6nm)7. TCPA SET (30S, 1M, 2M, 3M, 4M, 5M, 6M, 12M)8. AUTO ACQ (Off, On)

ARP MENUa)

(With ARP-10 only.)

5-1

Chapter 5. TROUBLESHOOTING

5.1 Outline

This chapter provides troubleshooting flow charts and describes error messages.

Error message

When 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.

Troubleshooting charts

The troubleshooting flow charts help the service technician to diagnose problem. To use the flowcharts, first find symptom and its flow chart number in the flow chart on page 5-2. Then, followappropriate flow chart to troubleshoot.

5-2

Start

Turn power ON

Nothing appears on display.

Flow chart 1No

Yes No echoes norwhite noise.

Flow chart 7No

Yes

No GAIN, STC, FTC effect.

Flow chart 9No

Yes

No heading data. Flow chart 3No

Yes

Key(s) inoperative. Flow chart 5No

Yes

Abnormal display. Flow chart 2No

Yes Poor sensitivity. Flow chart 8No

Yes

Target not acquired. Flow chart 10No

Yes

No nav data. Flow chart 4No

Yes

Antenna doesnot rotate.

Flow chart 6No

Yes

End FR7062-SME-40

5.2 Troubleshooting Flow Charts

5-3

Keys beep whenpressed.

No (No power)

Yes (Equipment is powered)

CRT heater lights?No

FR7062-SME-41

Flow chart 1

Results ofmeasurement.

NG

OK

OK

Check horizontal sync, vertical sync and videooutput at J102 #2, #4, #5on the SPU Board.

Faulty CRT assy.(Type: JM-12FU)

Faulty SPU- Board(SPU-9211)

Faulty CRT assy.(Type: JM-12FU)

*See page 2-4 for waveforms.

Check fuse (F1351) ondisplay unit.

OK ?NG

10.8 to 41.6 V *1,

21.6 to 41.6 V *2

OK

Check input voltage atconnector J1351 on display unit.

Replace fuse,turn on power.

OK

NG

NG

OK

Unplug antennaconnector DJ-1.

NG (No power)

OK

Faulty pcb in antennaunit

Faulty pcb PTU-9149

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

Check voltage at J103,#5(+5V),#2(+12V) onSPU-9211.

OK

Faulty pcb SPU-9211

NG

*1: FR-7062/7112*2: FR-7252

Symptom: Nothing appears on the display

5-4

FR7062-SME-41A

Flow chart 2

OK ?

Check horizontal sync, vertical sync and video output at J102 #2, #4, #5on pcb SPU-9211

Adjust CRT brilliance.NG

OK

OK

OK

OK

OK

Picture is in sync ?NG

Focus ?

Picture size OK ?

End

*See page 2-4 for waveforms.

Faulty pcb SPU-9211

Adjust synchronization of CRT assy. (Horizontal: VR202, Vertical : VR401)

Adjust picture size.(Horizontal: VR202, Vertical: VR401)

OK ?

OK

OK

NG

OK ?

NG Adjust focus (VR203) inCRT assy.

OK ?

OK ?

Faulty pcb CRT assy.(Type: JM-12FU)

Check if CRT brilliance is not set to minimum with BRILL control.

Symptom: Abnormal display

5-5

FR7062-SME-42

Flow chart 3

Heading data format.AD format

NMEA 0183'sHDT, HDM, HDG

Heading data indication?

Blank

***.*

OK

OK

OK

Power OFF and ON.

OK ?

OK ?

OK

NGOK ?

Heading dataindication?

Blank

***.*

OK (Normal)

Power OFF and ON.

OK ?NG

OK

OK ?NG

NG

Faulty pcb SPU-9211.NG

Heading data from headingsensor momentarily interrupted.

Faulty pcb SPU-9211 orwrong heading data format.

Faulty heading sensor orits interconnection cable.

Check RD data at HDG connector #1, #2 on display unit. Heading data from heading

sensor temporarily interrupted.

Check HDT, HDM, HDG output setting.

Check HDT, HDM, HDG output setting.

Check CLK data at HDG connector #3, #4 on display unit.

Faulty heading sensor or its interconnectioncable.

Symptom: No heading data

5-6

FR7062-SME-43

Flow chart 4

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

Some data shown byasteriska or blank.

OK

OK ?NG

Check nav equipment's output sentences.

OK

OK

OK ?NG

Wrong data sentence formatselection.

Selecte correct sentence. Faulty pcb SPU-9211 orNMEA 0183 not selected on nav equipment.

Faulty nav equipment or interconnection cable.

Check RD NMEA 1/2 connector #3, #4 on display unit with oscilloscope.

Symptom: No nav data.

5-7

FR7062-SME-43A

Flow chart 5

OK

NGWarm up countdown.

OK

NGOnly one key is faulty.

ALL keys.

Single vertical row only.Single vertical rowof keys is fauty.

Faulty pcb SPU-9211.

Cable between pcb PNL and pcb SPU damaged. Faulty pcb SPU-9211(U32).

Faulty lines #11(KEY 1) and #12 (KEY 2) of W301 on PNL-9150. Cable between pcb PNL and pcb SPU damaged.Faulty pcb SPU-9211 (U32).

Faulty VR on pcb VOL-9151, S1 to S20 on pcb PNL-9150.

Symptom: Key(s) inoperative

5-8

FR7062-SME-44

Flow chart 6

OK

NGAntenna does not rotate.

Rotate

+12 V (*1:DJ-1#1, *2:DJ-1#27)several seconds after TX key is pressed.

Menu setting ?(Installation menu)

0 V (*1:DJ-1 #1, *2: DJ-1 #27 ) when TX key is pressed.

Stop

MOTOR(+) onDJ-1 connector.

5 V after TX key is pressed.

0 V several seconds after TX key is pressed.

Check at J103 #17on pcb SPU-9211.

End

*1:FR-7062/7112*2:FR-7252

Faulty interconnection cablebetween display unit and antennaunit, Faulty motor.

Faulty relay (K2) on PTU-9149,Faulty relay control circuit onPTU-9149, Faulty ANT slowstart circuit on PTU-9149.

TX mode: Faulty pcb SPU-9211ST-BY mode: Faulty pcb PNL-9150.

Change "Scan stop" setting to "rotate"

Symptom: Antenna does not rotate

5-9

FR7062-SME-45

Flow chart 7

GAIN VR at maximum.NG

OK

Is J101 #15 on SPU-9211 about 0 V.

OK

Level of U14 #3 onSPU-9211 normal.

OK

Check if video signal is input to display unit.


Set GAIN VR at maximum.

NGFaulty VR on VOL-9151 Board.

NG

Disconnected orshort circuit.

OK

±12V line on antenna unit.

OK

NGFaulty video line cable .

NGFaulty cable on ±12 V line.

0V

approx -4V

White noise.

Confirm GAIN controlvoltage with VR fully CW.

Check for short circuited or disconnected video signal line between anntena unit and display unit.

Faulty pcb IF AMP.FR-7062: IF9214FR-7112/7252: IF9099 B

Symptom: No echoes nor white noise

5-10

FR7062-SME-46

Flow chart 8

Magnetron usage time within about 2000 hrs.

OK

No echoes; poorsensitivity.

No echoes (White noise appears)

Check level at DJ-1 #2(*1), #5(*2) on display unit

OK

Check that DJ-1 #6(*1),#8(*2) on display unit changes normally.

OK

All models: 1 V to 3 V

NG

poor sensitivity

NG(No TX trigger)

Faulty pcb SPU-9211

NGFaulty pcb SPU-9211

To (a)

0V

9 to 12V

From (a)

OK

Faulty pcb SPU-9211

NG

0V

approx -4V

OK

To (b)(page 5-11)

NG

*1:FR-7062/7112*2:FR-7252

Check TOTAL ON TIME/ TOTAL TX TIME.

Replace magnetron.

To (c) (page 5-12)

Check if display unit outputs TX trigger.

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

FR-7062: 1V to 13VFR-7112/7252: 5V to 28V

Check if TUNE IND. voltageis input to display unit.(Switch from ST-BY to TX)

Check that DJ-1 #18 (*1),#30 (*2) on display unit changes normally.

Check if video signal isinput to display unit.

Check if level of DJ-1 #16 (*1), #32 (*2) on display unit changes normally.

FR-7062: Faulty pcb IF9214FR-7112/7252: Faulty pcb IF9099B

Symptom: Poor sensitivity

5-11

Within rating ?

OK

Within rating ?

OK

FR-7062: 7.5 V to 7.7 VdcFR-7112: 7.4 V to 7.6 VdcFR-7252: 7.5 V to 8.5 Vdc

FR-7062: 300 to 370 VdcFR-7112: 300 to 370 VdcFR-7252: 520 to 580 Vdc

NG

NG

Faulty magnetron or MIC.

From (b) on page 5-10.

FR7062-SME-46A

Within rating ?

OK

FR-7062: VR 801FR-7112: VR 51FR-7252: Not adjustment.

Check TX high voltageat ST-BY.

FR-7062: Faulty pcb 03P9235FR-7112: Faulty pcb 03P9236FR-7252: Faulty pcb HV9017

Check magnetron heatervoltage at ST-BY.

Adjustment of magnetronheater voltage.

NGFR-7062: Faulty pcb 03P9235FR-7112: Faulty pcb 03P9236FR-7252: Faulty pcb 03P9238

5-12

Check DJ-1 PLB, PLAsignal on display unit for proper operation.

OK

MAX value

OK

OK

Magnetron usage time within 2000 hrs

OK

NG

NG

Faulty pcb SPU-91211

NG

NG


From (c) on page 5-10

FR7062-SME-46B

*1:FR-7062/7112*2:FR-7252

Faulty MIC

Signal 0.25 NM 2 NM 12 NMPL B, DJ1 #7 0V 0V 12VPL A, DJ1 #8 0V 12V 12V

FR-7062/7112Signal 0.25 NM 2 NM 12 NM

PL B, DJ1 #9 0V 0V 12VPL A, DJ1 #10 0V 12V 12V

FR-7252

Check TX pulselengthselection signal.

Faulty magnetron.

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

FR-7062: 1 V to 13 VFR-7112/7252: 5 V to 28 V

Check level at DJ-1 #6(*1), #8(*2) on display unit changes normally.

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

All mode: 1 to 2.5 VTUNE.IND.(*1: #18, *2: #30)

All models: Faulty MIC,FR-7062: Faulty pcb IF9214,FR-7112/7252: Faulty pcb IF9099D

5-13

FR7062-SME-47

Flow chart 9

GAIN can be adjusted.

OK

A/C SEA can be adjusted.

Check voltage at J101 #15 on SPU board.

NG NG

OK

A/C RAIN can be adjusted.

OK

End

Faulty pcb SPU-9211

Faulty VR on VOL-9151 board.

MIN: approx -9 VMAX: 0 V

OK

Check voltage atJ101#13 on SPU board.

NG NG

Faulty pcb SPU-9211



MIN: 0 VMAX: approx 4 V

OK

Check voltage at J101 #14 on SPU board.

NG NG

Faulty pcb SPU-9211

MIN: -7 VMAX: 0 V

OK

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

5-14

Flow chart 10

* Heading data in NMEA 0183 cannot be used for ARP.

Transfer rate.

OK

ARP data display ?

OK

OK

OK

Menu setting ?

OK

ARP self-test ?

OK

All targets acquired ?

Some Targets acquired.

OK ?

200 msecChange the rate to 25 msec

OFF

OFF

Not changing.

All Targets not acquired.

Turn on the display.

Faulty pcb 18P9007

Faulty pcb 18P9007

NG (Indication of ARP-10 is not connected) When LED(CR1) on ARP board is off: 18P9007 is faulty.

When LED(CR1) on ARP board is blinking: 18P9007 or SPU-9211 is faulty.

Incorrect input or Faultypcb 18P9007.

Which item is NG ?

SPEED, COURCE,TRIGEER, VIDEO,BP, HP

ROM, RAMFaulty 18P9007.

FR7062-SME-48

AD format HD data supplied ?

Check FE-DATA 1 & 2,rotating GAIN VR.

The ARP works normally.See page 2-10 for limitations.

Symptom: Target cannot be acquired

5-15

5.3 Message Indications

The following messages appears to call the operator’s attention to missing heading, bearing or gyropulses.

Error Message Meaning

HD SIG MISSINGHeading pulse is not applied to the SPU pcb.

BRG SIG MISSINGBearing pulse is not applied to the SPU pcb.

HDG shows ***.****.* appears when bearing signal is interrupted momently.

1) Press [MODE] key to erase asterisk.(Momental signal loss)

2) Check the connector

ARP-10 is not connected1. Optinal ARP-10 board is not fitted.

2. Communication between ARP and SPU boards is abnormal.

(Defective board or connector)

FR7062-SME-49

S-0

SCHEMATIC DIAGRAM

TITLE TYPE DWG. No FR-7062 FR-7112 FR-7252 PAGE

INTERCONNECTIONDIAGRAM

- C3459-C01 x S-1

- C3460-C01 x S-2

- C3461-C01 x S-3

DISLAY UNITRDP-122 C3459-K01 x x S-4

RDP-123 C3461-K01 x S-5

PANEL PNL-9150 C3392-K02 x x x S-6

TB/VOL BoardTB-9152,VOL 9151

C3392-K03 x x x S-7

INT Board03P9234 C3460-K03 x x S-8

03P9240 C3461-K03 x S-9

TX-HV HV-9017 C3352-K02 x S-10

POWER SUPPLY Board PTU-9149 C3393-K04 x x x S-11

SCANNER UNIT

- C3459-K02 x S-12

- C3460-K02 x S-13

- C3461-K02 x S-14

INT Board

03P9249 C3459-K03 x S-15

03P9250 C3460-K04 x S-16

03P9241 C3461-K04 x S-17

MODULATOR Board

03P9235 C3459-K04 x S-18

03P9237 C3460-K06 x S-19

03P9239 C3461-K06 x S-20

IF AMP. BoardIF-9214 C3441-K08 x S-21

IF-9099 C3398-K08 x x S-22

POWER SUPPLY Board 03P9236 C3460-K05 x S-23

RFC Board 03P9238 C3461-K05 x S-24

Documents

Service Manual FR7112