JVC KD-A615J User manual

SERVICE MANUAL
COPYRIGHT © 2010 Victor Company of Japan, Limited No.MA467<Rev.002>
2010/6
CD RECEIVER
MA467<Rev.002>20106SERVICE MANUAL
KD-A615J, KD-R610J, KD-R611E, KD-R611EU,
KD-R611EY, KD-R612E, KD-R616U, KD-R616UH,
KD-R616UN, KD-R618J
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
KD-A615 / KD-R610
KD-R618
KD-A615
KD-R610
only KD-R611/KD-R612

1-2 (No.MA467<Rev.002>)
SPECIFICATION
Designs & specifications are subject to change without notice.
KD-R618/KD-A615/KD-R610
AUDIO AMPLIFIER SECTION
Power Output 20 W RMS ×4 Channels at 4 Ωand < 1% THD+N
Signal-to-Noise Ratio 80 dBA (reference: 1 W into 4 Ω)
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz) Q1.0, Q1.25, Q1.5, Q2.0
Middle ±12 dB (0.5 kHz, 1.0 kHz, 1.5 kHz, 2.5 kHz) Q0.75, Q1.0, Q1.25
Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz) Q (Fixed)
Frequency Response 40 Hz to 20 000 Hz
Line-Out Level/Impedance KD-R618/KD-A615 5.0 V/20 kΩload (full scale)
KD-R610 2.5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Other Terminal AUX (auxiliary) input jack, USB input jack, Antenna input, Expansion port, Steering wheel remote input
(for KD-R618/KD-A615)
TUNER SECTION
Frequency Range FM with channel interval set to 100 kHz or 200 kHz 87.5 MHz to 108.0 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 1 710 kHz
with channel interval set to 9 kHz 531 kHz to 1 602 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®Audio) Decoding Format Max. Bit Rate: 320 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 ×160 mm (7-3/16" ×2-1/16" ×6-5/16")
Panel Size 188 mm ×58 mm ×6 mm (7-7/16" ×2-5/16" ×1/4")
Mass 1.3 kg (excluding accessories)

(No.MA467<Rev.002>)1-3
Designs & specifications are subject to change without notice.
KD-R616
AUDIO AMPLIFIER SECTION
Maximum Power Output Front/Rear 50 W per channel
Continuous Power Output
(RMS)
Front/Rear 20 W RMS ×4 Channels at 4 Ωand < 1% THD+N
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz) Q1.0, Q1.25, Q1.5, Q2.0
Middle ±12 dB (0.5 kHz, 1.0 kHz, 1.5 kHz, 2.5 kHz) Q0.75, Q1.0, Q1.25
Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz) Q (Fixed)
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 5.0 V/20 kΩload (full scale)
Line-Out Level/Impedance 5.0 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Other Terminal AUX (auxiliary) input jack, USB input jack, Antenna input, Expansion port, Steering wheel remote input
TUNER SECTION
Frequency Range FM 87.5 MHz to 108.0 MHz
AM 531 kHz to 1 602 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®Audio) Decoding Format Max. Bit Rate: 320 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 ×160 mm
Panel Size 188 mm ×58 mm ×6 mm
Mass 1.3 kg (excluding accessories)

1-4 (No.MA467<Rev.002>)
Designs & specifications are subject to change without notice.
KD-R611/KD-R612
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 har-
monic distortion.
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Tone Control Range Bass ±12 dB (60 Hz, 80 Hz, 100 Hz, 200 Hz) Q1.0, Q1.25, Q1.5, Q2.0
Middle ±12 dB (0.5 kHz, 1.0 kHz, 1.5 kHz, 2.5 kHz) Q0.75, Q1.0, Q1.25
Treble ±12 dB (10.0 kHz, 12.5 kHz, 15.0 kHz, 17.5 kHz) Q (Fixed)
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)
Subwoofer-Out Level/Impedance 2.5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
Other Terminal AUX (auxiliary) input jack, USB input jack, Antenna input, Expansion port, Steering wheel remote input
TUNER SECTION
Frequency Range FM 87.5 MHz to 108.0 MHz
AM MW: 522 kHz to 1 620 kHz
LW: 144 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 20 µV
Selectivity 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
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: 320 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 ×160 mm
Panel Size 188 mm ×58 mm ×12 mm
Mass 1.3 kg (excluding accessories)

(No.MA467<Rev.002>)1-5
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, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W 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

1-6 (No.MA467<Rev.002>)
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.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap

(No.MA467<Rev.002>)1-7
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
Pickup
Flexible wire
Short land section

1-8 (No.MA467<Rev.002>)
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.MA467<Rev.002>)1-9
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
3.1 Main body (Used figure were KD-R610U)
3.1.1 Removing the Bottom chassis (See Fig.1)
(1) Remove the three screws Aattaching the Heat sink.
(2) Remove the one screw Band one screw Cattaching the
Bottom chassis.
Fig.1
3.1.2 Removing the Front chassis (See Fig.2)
(1) Disengage four hooks aengaged both side of the Front
chassis.
Fig.2
3.1.3 Removing the Main board (See Fig.3, 4, 5)
(1) Remove the two screws Dand one screw Eattaching the
Side plate. (See Fig.3)
Fig.3
(2) Remove the two screw Fattaching the Top chassis. (See
Fig.4)
Fig.4
(3) Remove the three screws Gattaching the Main board.
(See Fig.5)
(4) Disconnect the B-B connector connected CD mechanism
and Main board CN501 of the Main board. (See Fig.5)
Fig.5
ACB
hook a
DE D
F
G
G
CN501

1-10 (No.MA467<Rev.002>)
3.1.4 Removing the CD mechanism (See Fig.6)
(1) Remove the three screws Hattaching the CD mechanism.
Fig.6
3.1.5 Removing the Switch board (See Fig.7)
(1) Remove the Volume knob.ZZ
(2) Remove the four screws Jattaching the Rear cover.
(3) Disengage eleven hooks bengaged Rear cover.
Fig.7
H
H
hook b
hook b
JJ

(No.MA467<Rev.002>)1-11
3.2 CD MECHANISM assembly section
• Remove the CD MECHANISM assembly from the main body.
3.2.1
Removing the MECHANISM CONTROL BOARD
assembly (See Fig.
1 and 2 )
(1) From the bottom side of CD MECHANISM assembly,
remove the solders from the soldered sections (
a , b and
c ) on the MECHANISM CONTROL BOARD assembly.
(See Fig.
1 .)
(2) Remove the three screws Aattaching 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
CN102 on the MECHANISM CONTROL BOARD as-
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 CN102 on the MECHANISM
CONTROL BOARD assembly.
Fig.1
Fig.2
A
CN102
Mechanism
control board
A
A
b
a
c
Mechanism control board
CN102
Pickup
Flexible wire
Short land section

1-12 (No.MA467<Rev.002>)
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 Battaching the top cover. (See Fig.3 and 4.)
(3) Take out the top cover in an upward direction. (See Fig.5.)
Fig.3
Fig.4
Fig.5
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 C
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 dof R.holder assembly.
Fig.6
B
Top cover
Roller spring Roller spring
B
B
Top cover
Top cover
Roller coller
Roller
R.ACT gear(3)
Roller gear
Gear holder
R.ACT gear(2)
R.holder assembly
Top cover Disc plate
Washer
C
d

(No.MA467<Rev.002>)1-13
3.2.4 Removing the PHOTO BOARD assembly (See Fig.7
and 8)
• Remove the MECHANISM CONTROL BOARD assembly and
top cover.
(1)
From the bottom side of the top cover, release the
projection
e from the notch of the disc plate. (See
Fig.
7 .)
(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
Dattaching the PHOTO BOARD assembly. (See Fig.8.)
Fig.7
Fig.8
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
E attaching the loading motor
assembly. (See Fig.
9 .)
(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 fof the three dampers from the mecha
frame. (See Fig.10.)
Reference:
When attaching the roller spring and SUS spring, keep
direction before remove.
(6)
Move the slide cam (R) assembly in the direction of the
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.)
Fig.9
Fig.10
Top cover Disc plate
e
e
Photo board
Disc plate
D
E
Mechanism section
Mecha frame
Roller spring
Loading motor assembly
SUS
spring
SUS
spring
SUS
spring
SUS
spring
Mecha frame
Cam cover
F

1-14 (No.MA467<Rev.002>)
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 F
attaching the cam cover. (See Fig.11.)
(2)
Take out the cam cover from mecha frame in an upward
direction. (See Fig.
11 .)
(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.)
Fig.11
Fig.12
Fig.13
Mecha frame
Cam cover
F
Mecha frame
Slide cam(L)
Slide cam(L)
Slide cam(L)
h
h
h
h
h
hh
h

(No.MA467<Rev.002>)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
h .
(See Fig.
14 and 15 .)
Fig.14
Fig.15
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 jof damper.
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 (kand m).
(3)
Take out the clamper assembly from the T.M chassis
assembly.
Fig.17
h
hh
h
h
h
Mecha frame
Link arm
F.lock lever 2
1
Slide cam(R) assembly
Slide cam(R) assembly
h
h
h
h
h
h
Slide cam(R) assembly
j
j
j
Damper (Brown)
Damper (Brown)
Damper (Gray)
k
m
Clamper assembly
Clamper spring
T.M. chassis assembly

1-16 (No.MA467<Rev.002>)
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 Gattaching the feed motor assembly. (See
Fig.18.)
(2)
Remove the two screws H attaching the feed motor to
f.motor holder. (See Fig.
19 .)
Reference:
When attaching the f. wheel gear, trigger arm and feed
motor, apply grease to the sections (n, pand 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.
Fig.18
Fig.19
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 Jattaching 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.
Fig.20
n
Feed motor assembly
Switch board
F.wheel gear
T.M. chassis assembly
Trigger arm
p
G
q
Comp. spring
F.motor holder
H
F.worm gear
Feed motor
r
Loading moto
r
L.M. base assembly
J
L.worm gear

(No.MA467<Rev.002>)1-17
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 uon 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 Kattaching the pickup to the rack plate.
(See Fig.22.)
Reference:
When attaching the loading motor, apply grease to the
sections sand t. (See Fig.21.)
Fig.21
Fig.22
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 Lattaching 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 .)
Fig.23
Fig.24
s
u
t
Main shaft
Pick up assembly
T.M. chassis assembly
u
Rack plate
Pick up
K
CD T.table assembly
T.M.chassis assembly
Spindle motor
LL
CD T.table assembly
Spindle motor
Loctite

1-18 (No.MA467<Rev.002>)
SECTION 4
ADJUSTMENT
4.1 Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Digital tester
(3) Test Disc
(4) Extension cable : EXTCD004-28P
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 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.
Extension cable
EXTCD004-28P

(No.MA467<Rev.002>)1-19
4.6 SERVICE MODE
Operating key: [MENU] →[DOWN] (3 sec)
Navigation key : Press [SEL] in any main display item to select that option.
Volume Knob Turn: forward and backward selection
INT ALL Initialize all data to factory shipment state.
Display the CD Error past record stored in EEPROM.
TOTAL-****: Total error count
E#xxyyyy : Latest 3 errors recorded. #: countor xx: error code yyyy: detailed error code
0#xxyyyy : The first 5 errors recorded. #: countor xx: error code yyyy: detailed error code
Note: Shifting among the above items is done by using "FF" or "REW" key.
Clear CD Error history from EEPROM.
Only engineer use
RUNNING MODE 1 CD6 module running mode 1 (Only factory use)
MODE 2 CD6 module running mode 2 (Only factory use)
NORMAL PLAY Disc operation & playback. (playback from starting position)
CURENT ##** Laser Electric Current Value
##: Initial value **: Current value
OUT TRK OFF Tracking off at CD outermost lap.
INN TRK OFF Tracking off at CD innermost lap.
CD LASER ON CD Laser Illumination and electric current.
CURENT ##** Laser Electric Current Value
##: Initial value **: Current value
JITTER #### Jitter Value
Note: Pressing "FF" or "REW" key to switch between
current value and jitter value display.
STOP Disc stop, LD(Laser) OFF
JITTER #### Jitter Value
Note: Pressing "FF" or "REW" key to switch between
current value and jitter value display.
CHECK MODE
CD ERROR
CLR CDERROR
TSUBUYAKI
DC offset error information
*See " DC offset error information " for details.
DC OK
Note : A disc is inserted, and it is displayed only at the time of CD function.

1-20 (No.MA467<Rev.002>)
4.7 DC OFFSET ERROR INFORMATION
4.7.1 Display indication
4.7.2 Error content confirmation.
Whether it turns on power and the "PROTECT" display appears are confirmed.
(1) When the "PROTECT" display appears.
The content of the DC offset error is confirmed in the Service mode.
* Because it takes DC offset protection, the following is displayed.
"DC ERROR"
(1-1) When "DC1 ERROR" is displayed. (DC ERROR1)
•Forecast cause
It comes in contact with improper connection or GND of the speaker wiring.
It is confirmed that there is no improper connection of the speaker wiring and pushes reset.
•When "PROTECT" is not displayed, it is unquestionable.
The error data of EEPROM, it deletes it. (CLR DC1)
•When "PROTECT" is still displayed.
The DC offset has been generated by the reasons other than the improper connection.
Forecast cause: Power AMP is broken.
After parts are exchanged, reset is confirmed pushing again.
(1-2) When "DC2 X" is displayed. (DC ERROR2)
* As for X, the detected number is displayed. (0-4)
* When X is 0, it is unquestionable because the DC offset has never been detected.
When leak of capacitor is detected, it is displayed.
It is confirmed that there is no problem in the capacitor and deletes the error data of EEPROM. (CLR DC2)
It is confirmed that reset is pushed and "PROTECT" is not displayed.
After above-mentioned (1-1) and (1-2) are executed, the conect of the DC offset error is confirmed in the Service mode.
If the part displayed as "DC ERROR" becomes "DC OK", it is unquestionable.
(2) When the "PROTECT" display doesn't appear.
The content of the DC offset error is confirmed in the Service mode.
(2-1) When "DC OK" is displayed, it is unquestionable because the DC offset has not been detected in the past.
(2-2) When "DC ERROR" is displayed, the confirmation similar to (1-1) and (1-2) is done because there is a history that detected
the DC offset error in the past.
DC OK
DC ERROR
CLR DC1 VOL push to confirmDC 1 OK
DC 1 ERROR
DC 2 X
BACK
VOL
push
VOL
knob
BACK
VOL
push
CLR DC2 VOL push to confirm
BACK
VOL
push