Jbl-GT5A402 caramp

8/8/2019 Jbl-GT5A402 caramp

1/15

GT5-A402

2 CHANNEL POWER AMPLIFIER

SERVICE MANUAL


2/15

- CONTENTS -

SPECIFICATIONS ..1PACKING......2

CONTROL/INSTALLATION DRAWINGS3

CONTROL/INSTALLATION INSTRUCTIONS....4

BASIC TROUBLESHOOTING5

EXPLODED VIEW/PARTS LIST.......6

AMPLIFIER BLOCK DIAGRAM.7P.C.B. DRAWINGS......8

ELECTRICAL PARTS LIST .....10

IC/TRANSISTOR PINOUTS...13

SCHEMATICS.........14

GT5-A402 Specifications

Output Power: 40W RMS x 2 channels @ 4 ohms; 1% THD + N

(14.4V supply) 60W RMS x 2 channels @ 2 ohms; 1% THD + N

120W RMS x 1 channel (bridged) @ 4 ohms; 1% THD + N

Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms)

101dBA (reference rated power into 4 ohms)

Total Peak power: 240W

Frequency response: 10Hz 100kHz (3dB)

THD+N 1KHz LPF=22KHz 0.05% (rated power @ 4 ohms)

Ch l S ti 50db

GT5-A402


3/15

GT5-A402

PACKAGING


4/15

1x4x 1x

9-1/4"235mm

2-1/8"54mm

7-1/2"191mm

GT5-A402


5/15

Installation Warnings and Tips Disconnect the negative () lead from your vehicles

battery.

At the installation sites, locate and make a note ofall fuel lines, hydraulic brake lines, vacuum lines

and electrical wiring. Use extreme caution whencutting or drilling in and around these areas.

Choose a safe mounting location away from moisture.

Make sure there is sufficient air circulation at themounting location for the amplifier to cool itself.

Mount the amplifier, using the supplied hardware.

Specifications 40W RMS x 2 channels @ 4 ohms and 1% THD + N*

60W RMS x 2 channels @ 2 ohms, 14.4V supply and1% THD + N*

120W RMS x 1 channel @ 4 ohms, 14.4V supply and1% THD + N*

THD + N: 0.05% (rated power @ 4 ohms)*

Signal-to-noise ratio: 85dBA(reference 1W into 4 ohms)*

Signal-to-noise ratio: 101dBA(reference rated power into 4 ohms)

Frequency response: 10Hz 100kHz (3dB)*

Total peak power: 240 watts

* CEA-2006A-compliant

0 Speaker Output Connectors Connect the speakers to these terminals,

observing proper polarity.

Two-channel operation: Connect the leftspeaker to the L+ and L terminals and the

right speaker to the R+ and R terminals. One-channel (bridged) operation: Connect the

single speaker to the R+ and L terminals.

Minimum speaker impedance for 2-channeloperation is 2 ohms. Minimum speaker impedancefor 1-channel (bridged) operation is 4 ohms.

1 Fuse Replace only with the same type and rating.

2 Power Input Connectors +12V: Connect to the positive terminal of the

vehicles battery. 10 AWG wire is recommended.Install an appropriate fuse holder and fuse (15A

minimum) within 18 inches of the battery. Makesure the wire is not damaged or pinched duringinstallation. Install protective grommets whenrouting wires through the firewall or other sheetmetal.

GND: Connect to the vehicles chassis. Refer tothe picture below.

REM: Connect to the Remote Out lead fromthe source unit or to a source of switched12V+ (ACC).

3 Input Connectors (RCA) Connect to the RCA outputs from the source unit

or signal processor.4 Input-Level Control Used to match the input level of the amplifierto the output level of the source unit.

SeeA for the adjustment procedure.

5 Power On LED Illuminated when the amplifier is on.

6 Protect LED Illuminated under any of the following fault

conditions: battery over/under voltage, short

circuit in speaker wires, amplifier is too hot,amplifiers output circuit has failed (DC voltageis present in the amplifiers output).

7 Crossover-Frequency Control 12dB/octave crossover, variable from

32Hz to 320Hz.

SeeB for the adjustment procedure.8 Crossover-Filter Selector

LP: Select for subwoofer(s).

FLAT: Select for full-range speakers whenno subwoofer will be used in the system.

HP: Select for midrange speakers orfull-range speakers when a subwoofer isused in the system.

9 Bass-Boost Control Provides 6dB of boost at 50Hz. Set the Bass-

Boost control according to your preference,being careful not to apply enough boost todamage the speaker(s).

A Setting Input LevelA Turn Input-Level control counterclockwise to

6V (minimum).

BWith a dynamic music track playing, turn the

head units volume control to the 3/4 position.C Turn Input-Level control clockwise until themusic is so loud that it no longer sounds clear(distortion is present in the output).

D Turn Input-Level control counterclockwisegradually, just until the music sounds clear,once again.

E Input level is now adjusted correctly.B Setting the CrossoverA Crossover setting for 5" or larger full-range

speakers when no subwoofer is included inthe system.

B Crossover setting for midrange and/orfull-range speakers when a subwooferis included in the system.

C Crossover setting for subwoofers.Note: Acceptable frequency ranges are indicatedin gray

GT5-A402 CAR AUDIO POWER AMPLIFIER OWNERS MANUAL

Factory Bolt Ring Connector

Ground Wire

Note: Remove any paintbelow ring connector.

Star Washer

GT5-A402


6/15

Amplifier Troubleshooting Guide

1. Status LED on Amplifier not Lit - Head Unit (Source) Turned ONVerify:

A. Remote turn-on wire from source to amplifier has proper voltageB. Power (B+) connections at amplifier, terminal blocks, and battery are secureC. Ground (GND) connections at amplifier and vehicle chassis are secureD. Battery B+ fuse (if used) is OKE. Amplifier fuse is OKF. B+ at battery and B+ at amplifier has proper voltage

2. Status LEDs Lit, No Output from Speakers in Normal Operating ConditionVerify:

A. RCA cables from amplifier to source are securely connectedB. Volume adjustment on amplifier is correctly adjustedC. Source is ON and playing

3. Engine Noise From Speaker(s)Turn source OFF, Disconnect RCA cables at amplifier. If noise stops, check equipment & cables leadingto amplifier.Verify:

A. RCA cables are of good quality with no breakage to internal shieldsB. RCA cables from source to amplifier are not run alongside any power cables

4. Amplifier Output Distorted Music

Verify:A. Source output music to amplifier is not distortedB. Source output sensitivity is correctly adjusted

GT5-A402


7/15

GT5-A402

EXPLODED VIEW


8/15

7

GT5-A402


9/15

8

GT5-A402


10/15

GT5-A402


11/15

GT5-A402 Electrical Parts List

Part Number Qty Reference Designator

Semiconductors

TR-KTA1266GR TRANS SMALL SIGNAL PNP,TO-92KTA1266GR 10 Q03,04,8,9,102,104,105,202,204,205

TR-KTA1268GR TRANS SMALL SIGNAL PNP,TO-92KTA1268GR 1 Q06

TR-KTC3198BL TRANS SMALL SIGNAL NPN,TO-92KTC3198BL 1 Q05

TR-KTC3198GR TRANS SMALL SIGNAL NPN,TO-92KTC3198GR 10 Q02,07,101,103,113,123,201,203,206, 213

TR-KTC3200GR TRANS SMALL SIGNAL NPN,TO-92KTC3200GR 2 Q112,212

TR-KTA1023Y TRANS SMALL SIGNAL PNP,TO-92KTA1023Y 3 Q01,124,209

TR-KTC1027Y TRANS SMALL SIGNAL NPN,TO-92KTC1027Y 2 Q114,208

DIODE-1N4148 DIODE SWITCHING SIGNAL1SS133 7 D03,04,05,13,14,151,201

DIODE-1N4004 DIODE RECTIFIER 1N4004 1 D02

DIODE-FR154 DIODE FAST RECOVERYFR154/1504 4 D06,07,08,09

DIODE-1N4744 DIODE ZENER, 15V/1W1N4744 2 D102,103IC-TL494CN IC PWM IC,SO-16TL494CN 1 U01

IC-NJM208LD IC DUAL OP AMP,SSOP-08NJM2068L 8 U101,102,103,104,105,106,107,108

FET-K30AGR TRANS N-CH JFET,TO-92KTK30AGR 3 Q12,100,200

FET-50N60P TRANS N-CH POWER MOSFET,TO-220 KEC50N60P 2 Q10,11

TR-KTC3200GR1 TRANS SMALL SIGNAL NPN,TO-92KTC3200GR 2 Q107,207

TR-KTD718 TRANS AUDIO POWER NPN,TO-3PKTD718 2 Q110,210

TR-KTB688 TRANS AUDIO POWER PNP,TO-3PKTB688 2 Q111,211

DIODE-1N5404 DIODE RECTIFIER1N5404 1 D01

DIODE-YG225D2 DIODE FAST RECOVERY, TO-220YG225D2 2 D11,12

LED3 LED 3PHI,GREEN/RED ARRAY L-H322005GB 1 LED01LED2 LED ACYLE 3.0 AWG#24,RED/BLACK150m/m 1 LOGO BACKLIGHT

Capacitors - see legend last page

CAP0502R2-E-1 CAPACITOR ELECTROLYTIC"DSA" ,5m/m 2.2uF/50V 2 C122 222

CAP0502R2-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 2.2uF/50V 4 C26,27,121,221

CAP016100-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 10uF/16V 5 C02,101,107,201,207

CAP025100-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 10uF/25V 1 C33

CAP016220-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 22uF/16V 4 C102,103,202,203

CAP016470-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 47uF/16V 2 C06,12

CAP035470-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 47uF/35V 1 C29

CAP016101-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 100uF/16V 6 C05,09,11,125,131,225

CAP025101-E CAPACITOR ELECTROLYTIC"MHA" ,5*11m/m 100uF/25V 2 C133,134

CAP100102-M CAPACITOR MYLAR,100V 5% 102(M) 1 C10

CAP100183 M CAPACITOR MYLAR 100V 5% 183(M) 2 C116 216

Description

GT5-A402


12/15

Part Number Qty Reference DesignatorDescription

RES6811/8-J RESISTOR CARBON FILM 1/8W 680 2 R108,208

RES4711/8-J RESISTOR CARBON FILM 1/8W 470 2 R22,23

RES5611/8-J RESISTOR CARBON FILM 1/8W 560 4 R106,146,206,246

RES8211/8-J RESISTOR CARBON FILM 1/8W 820 1 R13

RES1021/8-J RESISTOR CARBON FILM 1/8W 1K 10 R06,17,24,25,118,134,218,234,140,240RES1521/8-J RESISTOR CARBON FILM 1/8W 1.5K 2 R150,250

RES2721/8-J RESISTOR CARBON FILM 1/8W 2.7K 2 R172,243


RES4721/8-J RESISTOR CARBON FILM 1/8W 4.7K 6 R01,02,07,08,107,207

RES8221/8-J RESISTOR CARBON FILM 1/8W 8.2K 1 R05


RES5621/8-J RESISTOR CARBON FILM 1/8W 5.6K 4 R113,115,215,217

RES6821/8-J RESISTOR CARBON FILM 1/8W 6.8K 6 R114,133,139,216,233,239

RES1031/8-J RESISTOR CARBON FILM 1/8W 10K 19R09,10,21,33,34,109,111,112,119,120,130,

209,210,211,213,214,219,220,230RES1121/8-J RESISTOR CARBON FILM 1/8W 1.1K 2 R145,245

RES1531/8-J RESISTOR CARBON FILM 1/8W 15K 4 R20,35,154,251

RES2231/8-J RESISTOR CARBON FILM 1/8W 22K 6 R15,16,18,110,132,212

RES3331/8-J RESISTOR CARBON FILM 1/8W 33K 1 R19

RES2731/8-J RESISTOR CARBON FILM 1/8W 27K 2 R121,221


RES5631/8-J RESISTOR CARBON FILM 1/8W 56K 3 R252,152 R04




RES1041/8-J RESISTOR CARBON FILM 1/8W 100K 2 R129 ,R229

RES1051/8-J RESISTOR CARBON FILM 1/8W 1M 2 R123,223

RES2221/1-J RESISTOR METAL FILM 1/4W J 2.2K 1 R163

RES4R71/2-J RESISTOR METAL FILM 1/2WJ4.7/0.5W 2 R153,253

RES1001/2-J RESISTOR METAL FILM 1/2WJ10/0.5W 1 R03

RES1012-J RESISTOR MOR, 2WJ100/2W 1 R31

RES1512-J RESISTOR MOR, 150/2W J 2 R161,162

RES0R15-J RESISTOR MOR, 5WJ0.1/5W 4 R148, 149,248,249

3B20Kx2 LEVEL POT V9M(7x5) G3(PH2R)N 15S-3B20Kx220KB*2 1 VR01

15C50Kx4 FREQ POT V9M(7x5) G(4R)(PH2R)N15S-15C50Kx450KC*4 1 VR02

RET94011/8-F RESISTOR DISK TYPE,NTC 50K50K 1 TH01

Miscellaneous

CORE-GT402 TRANSFORMER 29PHI ISU29PHI 6t(0 7x6):11t(0 7x3) 1 T01

GT5-A402


13/15


14/15

GT5-A402


15/15

14

GT5-A402

Documents

Jbl-GT5A402 caramp