JVC KD-R420, KD-R421, KD-R422, KD-R424, KD-R425 Service manual

SERVICE MANUAL

COPYRIGHT © 2010 Victor Company of Japan, Limited

No.MA478<Rev.001>

2010/11

CD RECEIVER

MA478<Rev.001>201011SERVICE MANUAL

KD-R420J, KD-R421E, KD-R421EU, KD-R421EY,

KD-R422E, KD-R422EU, KD-R422EY, KD-R424UI,

KD-R425U, KD-R425UH, KD-R425UN, KD-R426U,

KD-R426UH, KD-R426UN, KD-R426UT,

KD-R427EE, KD-R428J, KD-R428UF, KD-R45E,

KD-R45EY, KD-R47EE, KD-R527EE

COPYRIGHT © 2010 Victor Company of Japan, Limited

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

Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

KD-R420,KD-R424,

KD-R425,KD-R426,

KD-R428

ONLY

KD-R420,KD-R428

ONLY

KD-R421,KD-R422

KD-R427, KD-R45,

KD-R47, KD-R527

ONLY

1-2 (No.MA478<Rev.001>)

SPECIFICATION

• Subject to change without notice.

• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or

other countries.

[KD-R424, KD-R425, KD-R426]

AUDIO AMPLIFIER SECTION

Maximum Power Output 50 W per channel

Continuous Power Output(RMS)

20 W per channel into 4

Ω

, 40 Hz to 20 000 Hz at no more than 1% total harmonic distortion.

Signal-to-Noise Ratio 70 dB

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Line-Out or Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance 1 kΩ

Other Terminal

USB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input

jack, Antenna terminal

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM 531 kHz to 1611 kHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB

AM Tuner Sensitivity/Selectivity 20 µV/40 dB

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

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

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Device Mass Storage Class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA

Max. Current DC 5 V 500 mA

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 × 159 mm

Panel Size 188 mm × 59 mm × 9 mm

Mass 1.2 kg (excluding accessories)

(No.MA478<Rev.001>)1-3

SPECIFICATION

• Subject to change without notice.

• If a kit is necessary for your car, consult your telephone directory for the nearest car audio speciality shop.

• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or

other countries.

[KD-R420,KD-R428]

AUDIO AMPLIFIER SECTION

Power Output 20 W RMS × 4 Channels at 4 Ω and ≤ 1% THD+N

Signal-to-Noise Ratio 80 dBA (reference : 1 W into 4 Ω)

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Line-Out or Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance 1 kΩ

Other Terminal

USB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input jack,

Antenna terminal

TUNER SECTION

Frequency Range FM with channel interval set to 200 kHz 87.9 MHz to 107.9 MHz

with channel interval set to 50 kHz 87.5 MHz to 108.0 MHz

AM with channel interval set to 10 kHz 530 kHz to 1700 kHz

with channel interval set to 9 kHz 531 kHz to 1611 kHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB

AM Tuner Sensitivity/Selectivity 20 µV/40 dB

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

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

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Device Mass Storage Class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA

Max. Current DC 5 V 500 mA

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 (32°F to 104°F)

Dimensions (W × H × D):(approx.) Installation Size 182 mm × 52 mm × 159 mm(7-3/16” × 2-1/16” × 6-5/16”)

Panel Size 188 mm × 59 mm × 9 mm(7-7/16” × 2-3/8” × 3/8”)

Mass 1.2 kg (2.8 lbs) (excluding accessories)

1-4 (No.MA478<Rev.001>)

SPECIFICATION

• Subject to change without notice.

• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or

other countries.

[KD-R421, KD-R422, KD-R45]

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output(RMS)

Front/Rear 20 W per channel into 4

Ω

, 40 Hz to 20 000 Hz at no more

than 1% total harmonic distortion.

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out or Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance ≤ 600 Ω

Other Terminal

USB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input

jack, Antenna terminal

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

AM MW 531 kHz to 1611 kHz

LW 153 kHz to 279 kHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB

MW Tuner Sensitivity/Selectivity 20 µV/40 dB

LW Tuner Sensitivity 50 µV

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

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

(R)

Audio) Decoding Format Max. Bit Rate 192 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Device Mass Storage Class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA

Max. Current DC 5 V 500 mA

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 × 159 mm

Panel Size 188 mm × 59 mm × 9 mm

Mass 1.2 kg (excluding accessories)

(No.MA478<Rev.001>)1-5

SPECIFICATION

• Subject to change without notice.

• Microsoft and Windows Media are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or

other countries.

[KD-R427, KD-R47, KD-R527]

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel

Continuous Power Output(RMS)

Front/Rear 20 W per channel into 4

Ω

, 40 Hz to 20 000 Hz at no more

than 1% total harmonic distortion.

Load Impedance 4 Ω (4 Ω to 8 Ω allowance)

Frequency Response 40 Hz to 20 000 Hz

Signal-to-Noise Ratio 70 dB

Line-Out or Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale)

Output Impedance ≤ 600 Ω

Other Terminal

USB input terminal, Front auxiliary input jack, Rear auxiliary/Bluetooth adapter input

jack, Antenna terminal

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

FM-LO 65.0 MHz to 74.0 MHz

AM MW 531 kHz to 1611 kHz

LW 153 kHz to 279 kHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 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 40 dB

MW Tuner Sensitivity/Selectivity 20 µV/40 dB

LW Tuner Sensitivity 50 µV

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

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

(R)

Audio) Decoding Format Max. Bit Rate 192 kbps

USB SECTION

USB Standard USB 1.1, USB 2.0

Data Transfer Rate (Full Speed) Max. 12 Mbps

Compatible Device Mass Storage Class

Compatible File System FAT 32/16/12

Playable Audio Format MP3/WMA

Max. Current DC 5 V 500 mA

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 × 159 mm

Panel Size 188 mm × 59 mm × 9 mm

Mass 1.2 kg (excluding accessories)

1-6 (No.MA478<Rev.001>)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purpos-

es. For continued protection, no changes should be made

to the original design unless authorized in writing by the

manufacturer. Replacement parts must be identical to

those used in the original circuits. Services should be per-

formed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should

not be made. Any design alterations or additions will void

the manufacturers warranty and will further relieve the

manufacture of responsibility for personal injury or property

damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteris-

tics are often not evident from visual inspection nor can the

protection afforded by them necessarily be obtained by us-

ing replacement components rated for higher voltage, watt-

age, etc. Replacement parts which have these special

safety characteristics are identified in the Parts List of Ser-

vice Manual. Electrical components having such features

are identified by shading on the schematics and by ( ) on

the Parts List in the Service Manual. The use of a substitute

replacement which does not have the same safety charac-

teristics as the recommended replacement parts shown in

the Parts List of Service Manual may create shock, fire, or

other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from

live parts, high temperature parts, moving parts and/or

sharp edges for the prevention of electric shock and fire

hazard. When service is required, the original lead routing

and dress should be observed, and it should be confirmed

that they have been returned to normal, after reassem-

bling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isola-

tion check on the exposed metal parts of the product (an-

tenna terminals, knobs, metal cabinet, screw heads,

headphone jack, control shafts, etc.) to be sure the product

is safe to operate without danger of electrical shock.Do not

use a line isolation transformer during this check.

• Plug the AC line cord directly into the AC outlet. Using a

"Leakage Current Tester", measure the leakage current

from each exposed metal parts of the cabinet, particular-

ly any exposed metal part having a return path to the

chassis, to a known good earth ground. Any leakage cur-

rent must not exceed 0.5mA AC (r.m.s.).

• Alternate check method

Plug the AC line cord directly into the AC outlet. Use an

AC voltmeter having, 1,000Ω per volt or more sensitivity

in the following manner. Connect a 1,500Ω 10W resistor

paralleled by a 0.15µF AC-type capacitor between an ex-

posed metal part and a known good earth ground.

Measure the AC voltage across the resistor with the AC

voltmeter.

Move the resistor connection to each exposed metal

part, particularly any exposed metal part having a return

path to the chassis, and measure the AC voltage across

the resistor. Now, reverse the plug in the AC outlet and

repeat each measurement. Voltage measured any must

not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5

mA AC (r.m.s.).

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal responsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical components are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution

Burrs formed during molding may be left over on some parts

of the chassis.

Therefore, pay attention to such burrs in the case of pre-

forming repair of this system.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen

printed side (parts side) of the PWB diagrams, the parts that are

printed over with black such as the resistor ( ), diode ( )

and ICP ( ) or identified by the " " mark nearby are critical

for safety. When replacing them, be sure to use the parts of the

same type and rating as specified by the manufacturer.

(This regulation dose not Except the J and C version)

Good earth ground

Place this

probe on

each exposed

metal part.

AC VOLTMETER

(Having 1000

ohms/volts,

or more sensitivity)

1500 10W

0.15 F AC TYPE

(No.MA478<Rev.001>)1-7

1.5 Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser

diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

1.5.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.

Be careful to use proper grounding in the area where repairs are being performed.

(1) Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the

traverse unit (optical pickup) on it.

(2) Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(3) Handling the optical pickup

• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical

pickup are shorted. After replacement, return the shorted parts to their original condition.

(Refer to the text.)

• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily

destroy the laser diode.

1.6 Handling the traverse unit (optical pickup)

(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a

time when attaching it to the connector.

(3) Handle the flexible cable carefully as it may break when subjected to strong force.

(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.7 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land sections before the card wire is disconnected from the connector on the servo board. (If the card wire

is disconnected without applying solder, the pickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land sections after connecting the card wire.

1M

Conductive material

(conductive sheet) or iron palate

(caption)

Anti-static wrist strap

SOLDER

1-8 (No.MA478<Rev.001>)

1.8 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

(No.MA478<Rev.001>)1-9

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Main body (Used model: KD-R421)

3.1.1 Removing the Bottom chassis (See Fig.1)

(1) Disengage the seven hooks a engaging the Bottom chas-

sis.

(2) Slide the Bottom chassis backward to remove it.

Fig.1

3.1.2 Removing the Front chassis (See Fig.2)

(1) Disengage the four hooks b engaging both sides of the

Front chassis.

Fig.2

3.1.3 Removing the Main board (See Fig.3, 4 and 5)

(1) Remove the one screw A attaching the Rear Bracket. (See

Fig.3)

Fig.3

(2) Remove the two screws B attaching both sides of the Side

panel. (See Fig.4)

Fig.4

(3) Remove the three screws C attaching the Main board. (See

Fig.5)

(4) Disconnect the board to board connector CN502

connect-

ing the Main board and the CD mechanism. (See Fig.5)

Fig.5

hook a

hook a

hook a

hook b

A

B

C

CN502

1-10 (No.MA478<Rev.001>)

3.1.4 Removing the CD mechanism (See Fig.6)

(1) Remove the three screws D attaching the CD mechanism.

Fig.6

3.1.5 Removing the Switch board (See Fig.7)

(1) Remove the Volume knob.

(2) Remove the four screws E attaching the Rear cover.

(3) Disengage the twelve hooks c engaging the Rear cover.

Fig.7

3.2 CD mechanism assembly section

3.2.1 Removing the Mecha control board

(1) Solder the short land on the pickup. (See Fig. 1)

Fig.1

(2) Remove the eight wires from the Mecha control board.

(See Fig.2)

Fig.2

(3) Disconnect the flexible wire from the pickup connected to

the connector CN102

on the Mecha control board. (See

Fig.3)

(4) Remove the two screws A attaching the Mecha control

board. (See Fig.3)

Fig.3

3.2.2 Removing the Traverse mechanism (See Fig.4, 5)

(1) Remove the five springs from the traverse mechanism.

(See Fig.4)

Fig.4

D

D

D

hook c

hook c

EE

SOLDER

BLACK

RED

WHITE

ORANGE

ORANGE

WHITE

YELLOW

YELLOW

CN102

A

(No.MA478<Rev.001>)1-11

(2) Remove the three screws B attaching the bottom frame as-

sembly. (See Fig.5)

(3) Remove the three dumpers from the bottom frame assem-

bly. (See Fig.5)

Fig.5

3.2.3 Removing the Pickup (See Fig.6, 7)

(1) Remove the two screws C attaching the feed bracket as-

sembly. (See Fig.6)

Fig.6

(2) Remove the shaft from the TM base. (See Fig.7)

(3) Disengage the hook a on the pickup from the TM base.

(See Fig.7)

Fig.7

3.2.4 Removing the Spindle motor (See Fig.8. 9)

(1) Remove the HC CL. Spring from the HC CL. base and the

TM base, and then lift up the HC CL. base. (See Fig.8)

Fig.8

B

B

CC

shaft

[ SIDE VIEW ]

HC CL. spring

1-12 (No.MA478<Rev.001>)

(2) Remove the HC CL. base from th holes on the TM base.

(See Fig.9)

Fig.9

(3) Remove the two screws D attaching the spindle motor.

(See Fig.10)

Fig.10

3.2.5 Removing the Loading motor

(1) Remove the roller arm assembly from the bottom frame as-

sembly. (See Fig.11)

Fig.11

(2) Remove the two screws E attaching the loading motor as-

sembly, and then remove the loading motor assembly in

the direction of the arrow. (See Fig.12)

Fig.12

D

E

(No.MA478<Rev.001>)1-13

SECTION 4

ADJUSTMENT

4.1 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz)

(2) Digital tester

(3) Test Disc

4.2 Standard measuring conditions

Power supply voltage DC14.4V(10.5 to 16V)

Load impedance 20K ohm (2 Speakers connection)

Output Level Line out 2.5V (Vol. MAX)

4.3 Standard volume position

Balance and Bass &Treble volume : lndication"0"

Loudness : OFF

4.4 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 antenna input.

The loss of 6dB need not be considered sincedirect reading of

figures are applied in this working standard.

4.5 4.5 How to connect the cable for adjusting

Caution:

Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively,

before supply the power.

If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.

Original cable

1-14 (No.MA478<Rev.001>)

4.6 Service mode

Operating Key : [MENU] → [DOWN] (7sec)

4.6.1 Mode content

Syscon shall display the information after entering this mode. The operation shown below shall be workable.

4.6.2 Common operation mode for all sources.

Display content Detail

The display is released when another operation is executed.

Operation Display content Detail

EQ CD error

information

display mode

Transit CD error information display mode

MENU Syscon

version

display

# = Display of destination.

J = USA, R = EUROPE, E = EASTERN-EUROPE

U = OTHERS(eq. ASIS), @@@ = Syscon version

UP Syscon

version

display

00~50 are displayed in " X X ".

For less than 1 hour, the display is indicated

per 10 minutes.

00001~10922 are displayed in " X X X X X ".

MAX 10922 (hours).

UP Power ON

duration

clear

Clear Power ON duration by pressing for 2

seconds when Power ON duration is dis-

played.

DOWN Disc

operation

duration

display

00~50 are displayed in " X X ".

For less than 1 hour, the display is indicated

per 10minutes.

00001~10922 are displayed in " X X X X X ".

MAX 10922 (hours).

DOWN Disc

operation

duration clear

Clear Disc operation duration by pressing

for 2 seconds when it is displated (Only the

displayed media is cleared).

BRIGHTNESS Disc eject

number of

times

Display Disc Eject number of times.

MAX 65535 (times)



BRIGHTNESS

Disc eject

number of

times clear

Clear Disc Eject number of times by press-

ing for 2 seconds when it is displayed.

I<< Force

Power OFF

information

display

No force Power OFF

Force Power OFF due to Syscon-Panel

commnication error.

I<< Force Power

OFF

information clear

Clear force Power OFF information by

pressing for 2 seconds when it is displayed.

S R V T E S T

S Y S #

@ @ @

P O N T M 0 H X X

P O N T M 0 X X X X

P O N T M 0 H 0 0

C D T M 0 H X X

C D T M X X X X X

C D T M 0 H 0 0

E J C N T X X X X X

E J C N T 0 H 0 0

P O F F - - -

P O F F P N L

P O F F - - -

(No.MA478<Rev.001>)1-15

4.6.3 CD error information display mode

Opera-

tion

Display content Detail

Move

between

DISP

(Forward

search)

i t e m w i t h

I<< / >>I

CD

mecha error log

display

Mecha error history 1,2,3 (latest)

# = History No. (1,2,3)

X X : number of errors, " -- " when there is none.

CD

load error

informationdisplay

Load error switch 1,2

# = History No. (1,2)

X X : number of errors, " -- " when there is none.

CD

load error

informationdisplay

Eject error switch 1,2,3,4

# = History No. (1,2,3,4)

X X : number of errors, " -- " when there is none.

CD

time code

error count

informationdisplay

(count skip)

CD time code error count information (count up-

dated) mode display

CD-DA error count numbers

X X : numbers of errors and " -- " when there is

none

CD-ROM (compressed file) error count numbers

X X : numbers of errors and " -- " when there is none

CD

time code error

count information

display

(no count update)

CD time code error count information (count not

updated) mode display

CD-DA error count numbers

X X : numbers of errors and " -- " when there is none

CD error information all clear

CD-ROM (compressed file) error count numbers

X X : numbers of errors and " -- " when there is none

EQ CD error

informationclear

Clear CD error information by pressing for 2

seconds when it is displayed.

EQ Mode release CD error information display mode release Back to default status, All lights on

M E C H E R #AXX

L O A D E R # X X

E J E C T E R # X X

C N T L O S E

C D D A XX

C D R O M X X

C N T S T A Y

C D D A XX

C D R O M X X

M E C H A E R 1 - -

1-16 (No.MA478<Rev.001>)

4.7 Service information clear mode

* The receiver is connected with the DC power supply (with the power supply turned off).

Operating Key : [BACK] → [POWER] → [DC power supply turned ON]

Mode content

After entering this mode, Syscom shall clear the information stored for service an output to the display.

4.7.1 The following table shows the data that is cleared.

4.8 DC error information mode

* The receiver is connected with the DC power supply (with the power supply turned off).

Operating Key : [MENU] → [UP] → [DC power supply turned ON]

4.8.1 Mode content

Syscon shall display the following after entering this mode. The operation shown below shall be workable.

4.8.2 Mode operation specification

Display content Detail

When normal end

When error end

Information for data clearing Detail

CD mecha information CD mecha log display

CD load error information display

CD eject error information display

CD time code error count information display (count skip)

CD time code error count information display (no count update)

Service information Power ON duration display

CD operation duration display

CD eject number of times display

Force power OFF information display

DC error information DC error 1 display (wrong connection and other detection

information in detectiong duration)

DC error 2 display (capacitor leakage detection number

information)

Display content Detail

When DC error is detected (in case that one of capacitor

leakage, wrong connection or other detection is found).

When DC error is not detected (in case that none of capacitor

leakage, wrong connection or other detection is found).

Operation Display content Detail

UP DC ERR1

display

When wrong connection & DC error in other detection

duration is detected.

When wrong connection & DC error in other detection

duration is not detected.

UP DC ERR1

clear

Clear detection information when wrong connection & DC er-

ror in other detection duration is displayed.(Clear data flash)

DOWN DC ERR2

display

Display detecting number of times in capacitor leakage

detection duration (0~4)

DOWN DC ERR2

clear

Clear number of times for detection information in ca-

pacitor leakage detection duration.(Clear data flash)

D A T A C L R O K

D A T A C L R N G

D C E R R

D C O K

D C 1 E R R

D C 1 O K

D C 1 O K

D C 2 4

D C 2 0

(No.MA478<Rev.001>)1-17

SECTION 5

TROUBLESHOOTING

5.1 16PIN CORD DIAGRAM

5.1.1 For KD-R420

YL

BK

GN

VI

GN / BK

VI / BK

WH

GY

GY / BK

WH / BK

RD

OR / WH

6

1

11

16

12

9

7

5

10

8

15

2

3

BL / WH

WH

RD

BK

BL

GN

VI

YL

Green

Gray

Yellow

OrangeOR

Violet

White

Blue

Red

Black

GY

8

7

6

5

16

15

134

3

2

1

12

11

10

9

BK

RD

WH

GN

VIGY

BL/WH

GN/BK

VI/BK

GY/BK

YL

NC

WH/BK

NC

14

OR/WH

BR

BR

14

BR Brown

1-18 (No.MA478<Rev.001>)

5.1.2 For KD-R421, KD-R422

RD 1

YL 1

BK

BL / WH

OR / WH

RD 3

RD 2

YL 2

15

16

14

12

2

16

1

3

7

1

5

6

3

8

2

4

15

11

12

10

9

6

5

7

8

10

GY / BK

GY

WH / BK

WH

VI / BK

VI

GN / BK

GN

BK

RD

BL

WH

VI

Black

Red

Blue

White

Violet

GN

GY

Gray

YL

Yellow

Green

BR

Brown

OR

Orange

BR

14

8

7

6

5

16

15

13

4

3

2

1

12

11

10

9

BK

RD1

WH

GN

VI

GY

BL/WH

GN/BK

VI/BK

GY/BK

YL1

NC

WH/BK

BR

LB/YL

OR/WH

14

13

LB

Light Blue

VI

GY

WH

GN

NC

NC

BR

YL2

BK

OR/WH

VI/BK

GY/BK

WH/BK

GN/BK

BL/WH

LB / YL

13

RD2

2

1

3

4

5

6

7

8

9

10

11

12

13

14

15 16

(No.MA478<Rev.001>)1-19

5.1.3 For KD-R424, KD-R425, KD-R426, KD-R428

YL

BK

GN

VI

GN / BK

VI / BK

WH

GY

GY / BK

WH / BK

RD

OR / WH

6

1

11

16

12

9

7

5

10

8

15

2

3

BL / WH

WH

RD

BK

BL

GN

VI

YL

Green

Gray

Yellow

OrangeOR

Violet

White

Blue

Red

Black

GY

8

7

6

5

16

15

134

3

2

1

12

11

10

9

BK

RD

WH

GN

VIGY

BL/WH

GN/BK

VI/BK

GY/BK

YL

NC

WH/BK

BL

14

OR/WH

BR

BR

14

BR Brown

4

BL

1-20 (No.MA478<Rev.001>)

5.1.4 For KD-R427, KD-R45, KD-R47, KD-R527

RD 1

YL 1

BK

BL / WH

OR / WH

RD 3

RD 2

YL 2

7

8

5

4

2

16

1

3

7

1

5

6

3

8

2

4

15

11

12

10

9

6

5

7

8

6

GY / BK

GY

WH / BK

WH

VI / BK

VI

GN / BK

GN

BK

RD

BL

WH

VI

Black

Red

Blue

White

Violet

GN

GY

Gray

YL

Yellow

Green

BR

Brown

OR

Orange

BR

14

8

7

6

5

16

15

13

4

3

2

1

12

11

10

9

BK

RD1

WH

GN

VI

GY

BL/WH

GN/BK

VI/BK

GY/BK

YL1

NC

WH/BK

BR

NC

OR/WH

14

1

3

5

7

2

4

6

8

NC

BL/WH

YL2

RD2

BK

NC

BR

OR/WH

1

3

5

7

2

4

6

8

GY

WH

GY/BK

GN

GN/BK

VI

VI/BK

WH/BK

2

(No.MA478<Rev.001>)1-21

5.1.5 For KD-R428

YL

BK

GN

VI

GN / BK

VI / BK

WH

GY

GY / BK

WH / BK

RD

OR / WH

6

1

11

16

12

9

7

5

10

8

15

2

3

BL / WH

WH

RD

BK

LB

GN

VI

YL

Green

Gray

Yellow

Orange

OR

Violet

White

Light Blue

Red

Black

GY

8

7

6

5

16

15

134

3

2

1

12

11

10

9

BK

RD

WH

GN

VIGY

BL/WH

GN/BK

VI/BK

GY/BK

YL

NC

WH/BK

LB/YL

14

OR/WH

BR

BR

14

BR

Brown

13

LB / YL

BL Blue

(No.MA478<Rev.001>)

VSE

Printed in Japan

Victor Company of Japan, Limited

Mobile Entertainment Division 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525, Japan