Jvc KW-XR811-EU Service Manual

SERVICE MANUAL

CD RECEIVER

MA475<Rev.001>20103SERVICE MANUAL

KW-XR810J, KW-XR816U, KW-XR816UH,

KW-XR811E, KW-XR811EY, KW-XR811EU,

KW-XR817EE

except

KW-XR817

only KW-XR810

For KW-XR811/XR817

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

No.MA475<Rev.001>

2010/3

SPECIFICATION

KW-XR810

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 (4Ω to 8 Ω allowance)

Tone Control Range Bass ±12 dB (50 Hz, 100 Hz, 200 Hz) Q0.7, Q1.0, Q1.4, Q2.0

Middle ±12 dB (0.5 kHz, 1.0 kHz, 2.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0 Treble ±12 dB (5.0 kHz, 10.0 kHz, 15.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0

Frequency Response 40 Hz to 20 000 Hz

Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Output Impedance 1 kΩ

Other Terminal AUX (auxiliary) input jack, USB input terminal, USB cable, Antenna input, Expansion

port, Steering wheel remote input

TUNER SECTION

Frequency Range FM with channel interval set to 100 kHz or 200 kHz

with channel interval set to 50 kHz

AM with channel interval set to 10 kHz

with channel interval set to 9 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 20 µV

Selectivity 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 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

USB SECTION

USB Standard USB 1.1, USB 2.0 Data Transfer Rate Full Speed Max. 12 Mbps

Compatible Device Mass storage class (except HDD) Compatible File System FAT 32/16/12 Playable Audio Format MP3/WMA/WAV Max. Current DC 5 V 500 mA

BLUETOOTH

Version Bluetooth 2.0 certified Power Class Class 2 Radio (possible distance 10 m) Service Area 10 m Profile HFP 1.5, OPP 1.1, A2DP 1.2, AVRCP 1.3, PBAP 1.0 Max. Current DC 5 V 54.3 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.) Mass 1.9 kg (4.2 lbs) (excluding accessories)

Designs & specifications are subject to change without notice.

® Audio) Decoding Format Max. Bit Rate: 320 kbps

Low Speed Max. 1.5 Mbps

Installation Size 182 mm × 111 mm × 160 mm (7-3/16” × 4-3/8” × 6-5/16”) Panel Size 188 mm × 117 mm × 23 mm (7-7/16” × 4-5/8” × 5/16”)

1-2 (No.MA475<Rev.001>)

KW-XR811, KW-XR817

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel Continuous Power Output (RMS)

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

Tone Control Range Bass ±12 dB (50 Hz, 100 Hz, 200 Hz) Q0.7, Q1.0, Q1.4, Q2.0

Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Subwoofer-Out Level/Impedance 2.5 V/20 kΩ load (full scale) Output Impedance 1 kΩ

Other Terminal AUX (auxiliary) input jack, USB input terminal, USB cable, Aerial input, Steering wheel

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 Ω)

MW Tuner Sensitivity 20 µV

AM Tuner Selectivity 40 dB

CD PLAYER SECTION

USB SECTION

USB Standard USB 1.1, USB 2.0 Data Transfer Rate Full Speed Max. 12 Mbps

Compatible Device Mass storage class (except HDD) Compatible File System FAT 32/16/12 Playable Audio Format MP3/WMA/WAV Max. Current DC 5 V 500 mA

BLUETOOTH

Version Bluetooth 2.0 certified Power Class Class 2 Radio (possible distance 10 m) Service Area 10 m Profile HFP 1.5, OPP 1.1, A2DP 1.2, AVRCP 1.3, PBAP 1.0 Max. Current DC 5 V 54.3 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.) Mass 1.9 kg (excluding accessories)

Designs & specifications are subject to change without notice.

Front/Rear 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 1% total harmonic

distortion.

Middle ±12 dB (0.5 kHz, 1.0 kHz, 2.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0 Treble ±12 dB (5.0 kHz, 10.0 kHz, 15.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0

remote input(KW-XR811)

FM-LOW (KW-XR817) 65.0 MHz to 74.0 MHz AM MW: 522 kHz to 1 620 kHz

LW: 144 kHz to 279 kHz

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

Sensitivity 50 µV

® Audio) Decoding Format Max. Bit Rate: 320 kbps

Low Speed Max. 1.5 Mbps

Installation Size 182 mm × 111 mm × 160 mm Panel Size 188 mm × 117 mm × 23 mm

(No.MA475<Rev.001>)1-3

KW-XR816

AUDIO AMPLIFIER SECTION

Maximum Power Output Front/Rear 50 W per channel Continuous Power Output (RMS)

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

Tone Control Range Bass ±12 dB (50 Hz, 100 Hz, 200 Hz) Q0.7, Q1.0, Q1.4, Q2.0

Frequency Response 40 Hz to 20 000 Hz Signal-to-Noise Ratio 70 dB

Line-Out Level/Impedance 5.0 V/20 kΩ load (full scale) Subwoofer-Out Level/Impedance 5.0 V/20 kΩ load (full scale) Output Impedance 1 kΩ

Other Terminal AUX (auxiliary) input jack, USB input terminal, USB rear cable, Antenna input, Steer-

TUNER SECTION

Frequency Range FM 87.5 MHz to 108.0 MHz

FM Tuner Usable Sensitivity 9.3 dBf (0.8 µV/75 Ω)

AM Tuner Sensitivity 20 µV

CD PLAYER SECTION

USB SECTION

USB Standard USB 1.1, USB 2.0 Data Transfer Rate Full Speed Max. 12 Mbps

Compatible Device Mass storage class (except HDD) Compatible File System FAT 32/16/12 Playable Audio Format MP3/WMA/WAV Max. Current DC 5 V 500 mA

BLUETOOTH

Version Bluetooth 2.0 certified Power Class Class 2 Radio (possible distance 10 m) Service Area 10 m Profile HFP 1.5, OPP 1.1, A2DP 1.2, AVRCP 1.3, PBAP 1.0 Max. Current DC 5 V 54.3 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.) Mass 1.6 kg (excluding accessories)

Designs & specifications are subject to change without notice.

Front/Rear 20 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 1% total harmonic

distortion.

Middle ±12 dB (0.5 kHz, 1.0 kHz, 2.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0 Treble ±12 dB (5.0 kHz, 10.0 kHz, 15.0 kHz) Q0.7, Q1.0, Q1.4, Q2.0

ing wheel remote input

AM MW: 522 kHz to 1 620 kHz

LW: 144 kHz to 279 kHz

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

Selectivity 40 dB

® Audio) Decoding Format Max. Bit Rate: 320 kbps

Low Speed Max. 1.5 Mbps

Installation Size 182 mm × 111 mm × 160 mm Panel Size 188 mm × 117 mm × 23 mm

1-4 (No.MA475<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 purposes. 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 performed 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 characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service 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 characteristics 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 reassembling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna 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, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current 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.).

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

0.15 F AC TYPE

Place this probe on

1500 10W

Good earth ground

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 preforming 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)

each exposed metal part.

(No.MA475<Rev.001>)1-5

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.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron palate

(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.

1-6 (No.MA475<Rev.001>)

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.

Mechanism control board

CN102

Flexible wire

Short land section

Pickup

(No.MA475<Rev.001>)1-7

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.

Please use enough caution not to

see the beam directly or touch it

in case of an adjustment or operation

check.

REPRODUCTION AND POSITION OF LABELS and PRINT

WARNING LABEL and PRINT

1-8 (No.MA475<Rev.001>)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Main body (Used model: KW-XR610)

3.1.1 Removing the Front panel (See Fig.1)

(1) Remove the two screws A attaching the both side of the

Front panel.

(2) Disengage four hooks a engaged both side of the Front

panel.

A hook a

Fig.1

3.1.2 Removing the Bottom chassis (See Fig.2, 3)

(1) Remove the two screws B attaching the both side of the

Bottom chassis. (See Fig.2)

(2) Remove the three screws C attaching the Bottom chassis.

(See Fig.3)

(3) Remove the three screws D and one screw E attaching the

Heat sink. (See Fig.3)

(4) Remove the six screws F and one screw G attaching the

Rear bracket. (See Fig.3)

DDFFFFGDE

Fig.3

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

(1) Remove the two screws H and one screw J attaching the

Side plate. (See Fig.4)

HHJ

Fig.4

Fig.2

(No.MA475<Rev.001>)1-9

(2) Remove the three screws K attaching the Main board. (See

Fig.5)

(3) Disconnect B-B connector CN501

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

of the Main board con-

CN501

Fig.5

3.1.4 Removing the CD mechanism (See Fig.6)

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

Fig.6

3.1.5 Removing the Switch board (See Fig.7)

(1) Remove the Volume knob. (2) Disconnect the flexible wire from LCD connected to con-

nector CN602

(3) Remove the sixteen screws M attaching the Switch board.

of the Switch board.

CN602

Fig.7

1-10 (No.MA475<Rev.001>)

3.2 CD MECHANISM assembly section

• Remove the CD MECHANISM assembly from the main body.

3.2.1 Removing the MECHANISM CONTROL BOARD as-

sembly (See Fig.1 and 2

(1) From the bottom side of CD MECHANISM assembly, re-

move the solders from the soldered sections (a, b and c) on the MECHANISM CONTROL BOARD assembly. (See Fig.1.)

(2) Remove the three screws A and one screw B attaching the

MECHANISM CONTROL BOARD assembly. (See Fig.1.)

(3) Solder the short land sections on the pickup. (See Fig.2.)

Caution:

• Solder the short land sections on the pickup before disconnecting the flexible wire from the connector

on the MECHANISM CONTROL BOARD as-

CN102

sembly. If the card wire is disconnected without attaching solder, the pickup may be destroyed by static electricity. (See Fig.2.)

• When attaching the MECHANISM CONTROL BOARD assembly, remove the solders from the short land sections after connecting the flexible wire to the connector

on the MECHANISM CONTROL BOARD as-

CN102

sembly.

)

Mechanism control board

Fig.1

CN102

Mechanism control board

CN102

Flexible wire

Short land section

Pickup

Fig.2

(No.MA475<Rev.001>)1-11

3.2.2 Removing the top cover (See Fig.3 to 5)

• Remove the MECHANISM CONTROL BOARD assembly. (1) From the front side of the CD MECHANISM assembly,

change the hook position of the two roller springs. (See Fig.3.)

(2) From the side of the CD MECHANISM assembly, remove

the six screws C attaching the top cover. (See Fig.3 and 4.)

(3) Take out the top cover in an upward direction. (See Fig.5.)

Top cover

Fig.5

Roller spring Roller spring

Fig.3

Top cover

Fig.4

1-12 (No.MA475<Rev.001>)

3.2.3 Removing the roller (See Fig.6)

• Remove the MECHANISM CONTROL BOARD assembly and top cover. (1) From the bottom side of the top cover, remove the screw D

attaching the gear holder.

(2) Remove the R.holder assembly from disc plate, and then

take out the roller from R.holder assembly in the direction of the arrow.

Reference:

When attaching the R.ACT gear (2) and R.ACT gear (3), apply grease to the section d of R.holder assembly.

Gear holder

Roller gear

R.ACT gear(3)

Roller coller

Washer

Roller

3.2.4 Removing the PHOTO BOARD assembly (See Fig.7 and 8)

• Remove the MECHANISM CONTROL BOARD assembly and top cover.

From the bottom side of the top cover, release the

(1)

projection

Fig.

(2) Take out the disc plate in the direction of the arrow. (See

Fig.7.)

(3) From the reverse side of the disc plate, remove the screw

E attaching the PHOTO BOARD assembly. (See Fig.8.)

from the notch of the disc plate. (See

R.ACT gear(2)

Top cover

R.holder assembly

Disc plate

Fig.6

Disc plate

Photo board

Fig.7

Disc plate

Fig.8

(No.MA475<Rev.001>)1-13

3.2.5 Removing the mechanism section (See Fig.9 and 10)

• Remove the MECHANISM CONTROL BOARD assembly and top cover. (1)

From the top side of the CD MECHANISM assembly,

remove the two screws assembly. (See Fig.

(2) Remove the two roller springs on the top side of the mecha

frame. (See Fig.9.)

(3) Remove the four SUS springs on the top side of the mecha

frame. (See Fig.9.)

(4) Remove the link spring on the top side of the mecha frame.

(See Fig.10.)

(5) Release section f of the three dampers from the mecha

frame. (See Fig.10.)

Reference:

When attaching the roller spring and SUS spring, keep direction before remove.

Move the slide cam (R) assembly in the direction of the

(6)

arrow, and then take out the mechanism section in an upward direction. (See Fig.10.)

Reference:

When attaching the mechanism section, apply grease to the section g. (See Fig.10.)

attaching the loading motor

SUS

spring

SUS

spring

Mechanism section

Roller spring

Loading motor assembly

Fig.9

Damper

Mechanism section

Mecha frame

SUS

spring

SUS

spring

Fig.10

Mecha frame

Slidecam(R) assembly

Link spring

1-14 (No.MA475<Rev.001>)

3.2.6 Removing the slide cam (L) (See Fig.11 to 13)

• Remove the MECHANISM CONTROL BOARD assembly, top cover and mechanism section. (1) From the top side of the mecha frame, remove the screw G

attaching the cam cover. (See Fig.11.) Take out the cam cover from mecha frame in an upward

(2)

Cam cover

direction. (See Fig.

(3) Take out the slide cam (L) in the direction of the arrow.

(See Fig.12.)

Reference:

When attaching the slide cam (L), apply grease to the section h. (See Fig.13.)

Slide cam(L)

Fig.13

Mecha frame

Slide cam(L)

Fig.11

Mecha frame

Fig.12

(No.MA475<Rev.001>)1-15

3.2.7 Removing the F.lock lever and slide cam (R) (See Fig.14 and 15)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover and mechanism section. (1) From the top side of the mecha frame, take out the slide

cam (R) assembly in an upward direction. (See Fig.14.)

(2) Rotate the F.lock lever in the direction of the arrow 1, and

then take out the direction of the arrow 2. (See Fig.14.)

Reference:

When attaching the slide cam (R) assembly, the f.lock lever and the link arm apply grease to the section

(See Fig.

and 15.)

Slide cam(R) assembly

F.lock lever

Mecha frame

Fig.14

Link arm

Slide cam(R) assembly

3.2.8 Removing the damper (See Fig.16)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover and mechanism section. From the mechanism section, pull out the three dampers in the direction of the arrow.

Reference:

Before inserting the shaft to the dampers, apply IPA to the pocket j of damper.

Slide cam(R) assembly

Fig.15

Damper (Gray)

Damper (Brown)

1-16 (No.MA475<Rev.001>)

Damper (Brown)

Fig.16

3.2.9 Removing the clamper assembly (See Fig.17)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover and mechanism section. (1) From the top side of the mechanism section, release the

clamper spring.

(2) Move the clamper assembly in the direction of the arrow,

and then release the joints (k and m). Take out the clamper assembly from the T.M chassis

(3)

assembly.

Clamper assembly

Clamper spring

T.M. chassis assembly

Fig.17

(No.MA475<Rev.001>)1-17

3.2.10 Removing the feed motor (See Fig.18 and 19)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover, mechanism section and clamper assembly. (1) From the bottom side of the T.M chassis assembly, remove

the two screws H attaching the feed motor assembly. (See Fig.18.) Remove the two screws J attaching the feed motor to

(2)

f.motor holder. (See Fig.

Reference:

When attaching the f. wheel gear, trigger arm and feed motor, apply grease to the sections (n, p and q). (See Fig.18 and 19.)

3.2.11 Removing the SWITCH BOARD assembly (See Fig.18)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover, mechanism section, clamper assembly and feed motor assembly. From the bottom side of the T.M chassis assembly, take out the SWITCH BOARD assembly in an upward direction from T.M chassis assembly.

Feed motor assembly

Switch board

F.wheel gear

Trigger arm

3.2.12 Removing the loading motor (See Fig.20)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover, mechanism section and clamper assembly. (1) From the right side of the L.M base assembly, remove the

two screws K attaching the loading motor.

(2) Take out the loading motor in the direction of the arrow

from the L.M base assembly.

Reference:

When attaching the loading motor, apply grease to the section r.

T.M. chassis assembly

Feed motor

F.worm gear

L.M. base assembly

Fig.18

Comp. spring

F.motor holder

Fig.19

L.worm gear

Loading moto

1-18 (No.MA475<Rev.001>)

Fig.20

3.2.13 Removing the pickup assembly (See Fig.21 to 22)

• Remove the MECHANISM CONTROL BOARD assembly, top

cover, mechanism section, clamper assembly and feed motor assembly.

Caution:

• Do not touch section u on the pickup assembly. (See Fig.21 and 22.)

(1) From the bottom side of the T.M chassis assembly, move

the pickup assembly in the direction of the arrow from the

T.M chassis assembly. (See Fig.21.) (2) Pull out the main shaft. (See Fig.21.) (3) Remove the screw M attaching the pickup to the rack plate.

(See Fig.22.)

Reference:

When attaching the loading motor, apply grease to the sections s and t. (See Fig.21.)

Pick up assembly

Main shaft

T.M. chassis assembly

Rack plate

Pick up

Fig.21

Fig.22

(No.MA475<Rev.001>)1-19

3.2.14 Removing the spindle motor (See Fig.23 and 24)

•

Remove the MECHANISM CONTROL BOARD assembly, top cover, mechanism section, clamper assembly, feed motor assembly and pickup assembly. (1) From the top side of the T.M chassis assembly, remove the

CD T.table assembly from the spindle motor. (See Fig.23.)

(2) Remove the two screws N attaching the spindle motor.

(See Fig.23.)

(3) Take out the spindle motor from the bottom side of the T.M

chassis assembly. (See Fig.23.)

Reference:

When attaching the CD T.table assembly to the spindle motor shaft, apply loctite 460 to inside the CD T.table assembly. (See Fig.24.)

Spindle motor

Fig.23

CD T.table assembly

T.M.chassis assembly

Loctite

Spindle motor

Fig.24

1-20 (No.MA475<Rev.001>)

SECTION 4

ADJUSTMENT

4.1 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz) (2) Digital tester (3) Test Disc (4) Extension cable : EXTGS004-26PL

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)

4.5 How to connect the extension 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.

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.

Extension cable EXTGS004-26PL

(No.MA475<Rev.001>)1-21

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