JVC KD-G331E Bedienungsanleitung

SERVICE MANUAL

2006/12

CD RECEIVER

MA287200612SERVICE MANUAL

KD-G331E, KD-G331EX, KD-G331EY,

KD-G331EU, KD-G332E, KD-G332EX,

KD-G332EY, KD-G332EU, KD-G333E,

KD-G333EX, KD-G333EY, KD-G333EU,

KD-G334UI, KD-G335U, KD-G335UN,

KD-G335UT, KD-G335UH, KD-G337BEE,

KD-G337SEE, KD-G338UF

For the CD mechanism, please refer mechanism manual FLM-CD1-1 (No.MY006).

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

(for KD-G331)

Only KD-G335

(for KD-G332)

(for KD-G333)

(for KD-G337)

1-2 (No.MA287)

SPECIFICATION

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output (RMS) Front/Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than

0.8% total harmonic distortion.

Load Impedance 4 Ω(4 Ωto 8 Ωallowance)

Tone Control Range Bass ±12 dB at 100 Hz(For KD-G331,332,333,337)

Treble ±12 dB at 10 kHz(For KD-G331,332,333,337)

Bass ±12 dB at 60 Hz(For KD-G335,334,338)

Middle ±12 dB at 1 kHz(For KD-G335,334,338)

Treble ±12 dB at 7.5 kHz(For KD-G335,334,338)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 2.5 V/20 kΩload (full scale)

Output Impedance 1 kΩ

Other Terminals Steering wheel remote input (For KD-G331,332,333)

Subwoofer-Out Level/Impedance 2.0 V/20 kΩload (full scale For KD-G335)

2.5V/20kΩload (full scale For KD-G334,338)

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz(For KD-G331,332,333,334,335,338)

FM1/FM2 87.5 MHz to 108.0 MHz(For KD-G337)

FM3 65.00 MHz to 74.00 MHZ(For KD-G337)

AM (MW) 522 kHz to 1 620 kHz(For KD-G331,332,333,337)

AM (LW) 144 kHz to 279 kHz(For KD-G331,332,333,337)

AM 531 kHz to 1 602 kHz(For KD-G334,335,338)

FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)

50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 30 dB

MW Tuner Sensitivity/Selectivity 20 µV/35 dB(For KD-G331,332,333,337)

LW Tuner Sensitivity 50 µV(For KD-G331,332,333,337)

AM Tuner Sensitivity/Selectivity 20 µV/35 dB(For KD-G334,335,338)

CD PLAYER SECTION

Type Compact disc player

Signal Detection System Non-contact optical pickup (semiconductor laser)

Number of Channels 2 channels (stereo)

Frequency Response 5 Hz to 20 000 Hz

Dynamic Range 96 dB

Signal-to-Noise Ratio 98 dB

Wow and Flutter Less than measurable limit

MP3 Decoding Format: (MPEG1/2 Audio Layer 3) Max. Bit Rate 320 kbps

WMA (Windows Media® Audio) Decoding Format Max. Bit Rate 192 kbps

(No.MA287)1-3

Design and specifications are subject to change without notice.

GENERAL

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0°C to +40°C

Dimensions (W ×H ×D)

(approx.)

Installation Size 182 mm ×52 mm ×150 mm(For KD-G331,332,333,337)

182 mm ×52 mm ×158 mm(For KD-G334,335,338)

Panel Size 187 mm ×58 mm ×13 mm

Mass 1.4 kg (

excluding accessories For KD-G331,332,333,337

)

1.3 kg (excluding accessories For KD-G334,335,338)

1-4 (No.MA287)

SECTION 1

PRECAUTION

1.1 Safety Precautions

!Burrs formed during molding may be left over on some parts of the chassis. Therefore,

pay attention to such burrs in the case of preforming repair of this system.

(No.MA287)1-5

1.2 Important for laser products

1.CLASS 1 LASER PRODUCT

2.CAUTION :

(For U.S.A.) Visible and/or invisible class II laser radiation

when open. Do not stare into beam.

(Others) Visible and/or invisible class 1M laser radiation

when open. Do not view directly with optical instruments.

3.CAUTION : Visible and/or invisible laser radiation when

open and inter lock failed or defeated. Avoid direct

exposure to beam.

4.CAUTION : This laser product uses visible and/or invisible

laser radiation and is equipped with safety switches which

prevent emission of radiation when the drawer is open and

the safety interlocks have failed or are defeated. It is

dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able

to function.

6.CAUTION : Use of controls, adjustments or performance of

procedures other than those specified here in may result in

hazardous radiation exposure.

REPRODUCTION AND POSITION OF LABELS and PRINT

!Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

WARNING LABEL and PRINT

1-6 (No.MA287)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MA287)1-7

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the Bottom cover

(See Fig.1)

(1) Disengage the five hooks aengaged bottom cover.

Fig.1

3.1.2 Removing the Front chassis

(See Fig.2)

(1) Remove the two screws A(both side of Front chassis) at-

taching the Front chassis.

(2) Disengage the two hooks b(both side of Front chassis) en-

gaged Front chassis.

Fig.2

3.1.3 Removing the Heat sink

(See Fig.3)

(1) Remove the two screws Band one screw Cattaching the

Heat sink.

Fig.3

Hook a

Hook b

BBC

1-8 (No.MA287)

3.1.4 Removing the Rear bracket

(See Fig.4)

(1) Remove the one screw Dattaching the Remote cable.

(2) Remove the one screw Eattaching the LINE OUT jack.

(3) Remove the two screws Fattaching the Connector jack.

(4) Remove the one screw Gattaching the Antenna jack.

(5) Remove the one screw Hattaching the IC bracket.

(6) Remove the three screws Jattaching the Rear bracket.

Fig.4

3.1.5 Removing the Main board assembly

(See Fig.5)

(1) Remove the two screws Kattaching the Main board as-

sembly.

(2) Disconnect the connector CN501 connected to CD board

assembly.

Fig.5

3.1.6 Removing the CD mechanism assembly

(See Fig.6)

(1) Remove the three screws Lattaching the CD mechanism

assembly.

Fig.6

DJJFF

EH JG

CN501

(No.MA287)1-9

3.2 Front panel assembly

3.2.1 Removing the Rear cover

(See Fig.7)

(1) Remove the Volume knob from Front panel assembly.

(2) Remove the five screws Mattaching the Rear cover.

(3) Disengage the fourteen hooks cengaged Front panel.

CAUTION:

When remove the Rear cover, Detach knob and spring are

easy to come off, do not lost them.

Fig.7

3.2.2 Removing the Switch board assembly

(See Fig.8)

(1) Disengage the illumination lens from front panel and then

take out the Switch board assembly.

Fig.8

3.3 CD mechanism assembly

For CD mechanism, please refer mechanism manual FLM-CD1-1 (No.MY006).

Hook cHook c

Hook cHook cHook cHook c

Illumination lens

1-10 (No.MA287)

SECTION 4

ADJUSTMENT

4.1 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz)

(2) Electric voltmeter

(3) Digital tester

(4) Tracking offset meter

(5) Test Disc JVC: CTS-1000

(6) Extension cable for check

EXTCD001-26P ×1

4.2 Standard volume position

Balance and Bass & Treble volume : Indication "0"

Loudness : OFF

4.3 Dummy load

Exclusive dummy load should be used for AM, and FM. For FM

dummy load, there is a loss of 6dB between SSG output and an-

tenna input. The loss of 6dB need not be considered since direct

reading of figures are applied in this working standard.

4.4 Standard measuring conditions

Power supply voltage : DC14.4V(10.5 - 16V)

Load impedance : 20KΩ(2 Speakers connection)

Output Level : Line out 2.0V (Vol. MAX)

4.5 How to connect the extension cable for adjustment

CAUTION :

Be sure to attach the heat sink and rear bracket onto the

power amplifier and regulator respectively, before supply the

power.

If voltage is applied without attaching those parts, the power

amplifier IC and regulator IC will be destroyed by heat.

Heat sink

Rear bracket

EXTCD001-26P

Extension cable

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