Page 1
SERVICE MANUAL
CD / SD RECEIVER
MA19120056
KD-AR8500,KD-SHX850
Area suffix
J ------------- Northern America
SOURCE
DISP
BACK
BAND
MENU
PICT
SOURCE
DISP
BACK
BAND
MENU
PICT
KD-AR8500 J KD-SHX850 J
ARSENAL rogo
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.MA191
2005/6
Page 2
SPECIFICATION
AUDIO AMPLIFIER SECTION
Power Output 35 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N
Signal-to-Noise Ratio 85 dBA (reference: 1 W into 4 Ω)
Load Impedance 4 Ω (4 Ω to 8 Ω allowance)
Equalizer Control Range Frequencies : Graphic EQ
Frequencies : Parametric EQ 3 bands (Band 1/2/3)20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz,
Level ±10 dB
Frequency Response 40 Hz to 20 000 Hz
Line-In Level/Impedance LINE IN 1.5 V/20 kΩ load
Line-Out Level/Impedance LINE OUT 5.0 V/20 kΩ load (full scale)
Output Impedance 1 kΩ
Power Supply Unit DC/DC converter
Other Terminals SUBWOOFER OUT, Changer control, Steering wheel remote input
Frequency Range FM 87.5 MHz to 107.9 MHz (with channel interval set to 200 kHz)
AM 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)
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 35 dB
Capture Ratio 1.5 dB
AM Tuner Sensitivity 20 µV
Selectivity 65 dB
CD/SD 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 98 dB
Signal-to-Noise Ratio 102 dB
Wow and Flutter Less than measurable limit
MP3 (MPEG Audio Layer 3) Max. Bit Rate 320 kbps
WMA (Windows Media Audio) Max. Bit Rate 192 kbps
Playable SD Card Format FAT 12/16
Storage Up to 512 MB
Playable Audio Format for SD Card MP3/WMA
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) Installation Size (approx.) 182 mm × 52 mm × 159 mm (7-3/16" × 2-1/16" × 6-5/16")
Panel Size (approx.) 188 mm × 58 mm × 13 mm (7-7/16" × 2-5/16" × 9/16")
Mass (approx.) 1.7 kg (3.8 lbs) (excluding accessories)
63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 12.5 kHz (9 bands)
100 Hz,125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz,
630 Hz,800 Hz, 1 kHz, 1.2 kHz, 1.6 kHz, 2 kHz, 2.5 kHz, 3.2 kHz,
4 kHz,5 kHz, 6.3 kHz, 8 kHz, 10 kHz, 12.5 kHz, 16 kHz, 20 kHz
(31 frequencies)
TUNER SECTION
87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)
531 kHz to 1 602 kHz (with channel interval set to 9 kHz)
GENERAL
• Design and specifications are 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.
• SD logo is a trademark.
1-2 (No.MA191)
Page 3
1.1 Safety Precautions
SECTION 1
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.
Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.
(No.MA191)1-3
Page 4
1.2 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.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
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
1M
Conductive material
(conductive sheet) or iron plate
(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.
1.3 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) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.4 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.
(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.
Short sections
Flexible wire
1-4 (No.MA191)
CN601
Mechanism control board
Page 5
1.5 Important for laser products
!
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The CD,MD and DVD player uses 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
WARNING LABEL
CAUTION : Visible and Invisible
CLASS 1
LASER PRODUCT
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
VARNING : Synlig och
osynling laserstrålning när
den öppnas och spärren är
urkopplad. Betrakta ej
strålen. (s)
VARO : Avattaessa ja suojalukitus
ohitettuna tai viallisena olet alttiina
näkyvälle ja näkymättömälle
lasersäteilylle. Vältä säteen
kohdistumista suoraan itseesi. (f)
(No.MA191)1-5
Page 6
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe DISASSEMBLY.
1-6 (No.MA191)
Page 7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the front panel assembly
(See Fig.1)
(1) Push the detach button in the lower right part of the front
panel assembly.
(2) Remove the front panel assembly.
3.1.2 Removing the heat sink
(See Fig.2)
Reference:
Remove the front panel assembly as required.
(1) From the left side of the main body, remove the two screws
A and three screws B attaching the heat sink.
(2) Remove the heat sink from the main body.
Front panel assembly
Detach button
Fig.1
AAB
Heat sink
Fig.2
(No.MA191)1-7
Page 8
3.1.3 Removing the top chassis assembly
(See Figs.3 to 6)
• Prior to performing the following procedures, remove the heat
sink.
Reference:
Remove the front panel assembly as required.
(1) From the bottom side of the main body, remove the two
screws C attaching the top chassis assembly to the bottom
chassis assembly. (See Fig.3)
(2) From the both and rear sides of the main body, remove the
five screws D attaching the top chassis assembly to the
bottom chassis assembly. (See Figs.4 to 6)
(3) Lift the top chassis assembly in the direction of the arrow,
disconnect the connector CN503
trol board from the connector CN721 on the main board.
(See Figs.4 to 6)
(4) Take out the top chassis assembly from the bottom chassis
assembly.
on the mechanism con-
C
Top chassis assembly
CN503
Bottom chassis assembly
C
Top chassis assembly
Fig.3
Mechanism control board
Bottom chassis assembly
Top chassis assembly
Main board
Main board
Mechanism control board
Bottom chassis assembly
CN721
Fig.4
Fig.5
D
CN503
CN721
Top chassis assembly
DD
D
D
1-8 (No.MA191)
Bottom chassis assembly
Rear bracket
Fig.6
Page 9
3.1.4 Removing the front chassis assembly
(See Figs.7 and 8)
• Prior to performing the following procedure, remove the front
panel assembly, heat sink and top chassis assembly.
(1) From the both sides of the top chassis assembly, remove
the two screws E attaching the front chassis assembly.
(2) Remove the front chassis assembly from the top chassis
assembly.
3.1.5 Removing the CD mechanism assembly
(See Fig.9)
• Prior to performing the following procedures, remove the front
panel assembly, heat sink and top chassis assembly.
Reference:
Remove the front chassis assembly as required.
(1) From the inside of the top chassis assembly, remove the
three screws F attaching the CD mechanism assembly.
(2) Release the mecha heat sink from the slots a on the mech-
anism control board and remove the mecha heat sink from
the main body.
(3) Take out the CD mechanism assembly from the top chas-
sis.
Top chassis assembly
E
Front chassis assembly
Mecha heat sink
Top chassis
E
Front chassis assembly
Fig.7
Top chassis assembly
Fig.8
Mechanism control board
F
a
F F
CD mechanism assembly
Fig.9
(No.MA191)1-9
Page 10
3.1.6 Removing the main board
(See Figs.10 and 11)
• Prior to performing the following procedures, remove the front
panel assembly, heat sink and top chassis assembly.
(1) From the rear side of the bottom chassis assembly, remove
the two screws G attaching the rear bracket to the bottom
chassis assembly. (See Fig.10)
(2) From the top side of the bottom chassis assembly, remove
the two screws H attaching the main board to the bottom
chassis assembly. (See Fig.11)
(3) Release the stopper of the connector CN701
board in an upward direction, disconnect the card wire from
the connector CN701
(4) Disconnect the wire from the connector of the front door
mechanism assembly. (See Fig.11)
(5) Disconnect the wire from the connector CN911
board. (See Fig.11)
Reference:
After connecting the wires, fix the wires with the wire
holders.
(6) Take out the main board from the bottom chassis assem-
bly.
. (See Fig.11)
on the main
on the main
Rear bracket
G
Front door mechanism assembly
Connector
Wire holders
Bottom chassis assembly
Fig.10
Card wire
CN701
Stopper
Bottom chassis assembly
H
3.1.7 Removing the rear bracket
(See Fig.12)
• Prior to performing the following procedures, remove the front
panel assembly, heat sink, top chassis assembly and main
board.
(1) Remove the two screws J and three screws K attaching the
wires to the rear bracket.
(2) Remove two screws M attaching the wire bracket to the
rear bracket.
(3) From the rear side of the main board, remove the wires
from the rear bracket in the direction of the arrow.
Reference:
After attaching the rear bracket to the main board, pass the
wires through the wire bracket and insert them into the slots of
the rear bracket.
H
M
JK
CN911 Main board
Fig.11
Wire bracket
Wire
Rear bracket
Fig.12
1-10 (No.MA191)
Page 11
3.1.8 Removing the front door mechanism assembly
(See Fig.13)
• Prior to performing the following procedures, remove the front
panel assembly, heat sink, top chassis assembly and main
board.
(1) From the top side of the bottom chassis assembly, remove
the screw N attaching the FPC guide to the bottom chassis.
(2) Remove the five screws P attaching the front door mecha-
nism assembly to the bottom chassis.
Reference:
When attaching the screws N and P, apply a locking
agent them.
(3) Take out the front door mechanism assembly from the bot-
tom chassis.
Front door mechanism assembly
Bottom chassis
3.1.9 Removing the switch board
(See Figs.14 to 16)
• Prior to performing the following procedures, remove the front
panel assembly.
(1) From the rear side of the front panel assembly, remove the
six screws Q attaching the rear cover to the front panel assembly. (See Fig.14)
(2) Release the two joints b of the front panel assembly and re-
move the rear cover. (See Fig.15.)
(3) Take out the switch board from the front panel assembly.
(See Fig.16)
Note:
When removing the rear cover assembly and switch board, be
careful not to lose the spring.
P
FPC guide
Rear cover assembly
Q
P
N
Fig.13
Q
Q
Fig.14
Rear cover assembly
Joints b
Front panel assembly
Spring
Joints b
Fig.15
Switch board
Fig.16
(No.MA191)1-11
Page 12
3.2 CD mechanism assembly section
• Remove the CD mechanism assembly from the main body.
(See "3.1.5 Removing the CD mechanism assembly".)
3.2.1 Removing the mechanism control board
(See Fig.1)
(1) From the bottom side of the CD mechanism assembly, sol-
der the short sections on the flexible wire.
Caution:
Solder the short sections on the flexible wire before disconnecting the flexible wire from the connector CN601
on the mechanism control board. If you do not follow this
instruction, the CD pickup may be damaged.
(2) Disconnect the flexible wire from the connector CN601
the mechanism control board.
(3) Disconnect the flexible wire from the connector CN602
the mechanism control board.
(4) Remove the solders from the soldered sections a on the
mechanism control board and remove the wires of the feed
motor.
(5) Remove the solders from the soldered sections b on the
mechanism control board, and remove each wire of the
spindle motor and other parts.
(6) Remove the five screws A attaching the mechanism con-
trol board.
Caution:
When reassembling, remove the solders from the short sections after connecting the flexible wire to the connector CN601
on the mechanism control board.
on
on
Short sections
Flexible wire
CN601
A
CD mechanism assembly
A
A
Spindle motor
Mechanism control board
Fig.1
Feed motor
b
A
a
A
CN602
1-12 (No.MA191)
Page 13
3.2.2 Removing the top cover
r
(See Fig.2)
(1) From the back side of the CD mechanism assembly, re-
move the two screws B attaching the top cover.
(2) Take out the top cover in an upward direction.
Reference:
When attaching the top cover, set the sections c of the top cover under the bending sections d of the chassis base 2.
3.2.3 Removing the mechanism section
(See Figs.2 to 4)
• Remove the mechanism control board and top cover.
(1) From the front side of the CD mechanism assembly, re-
move the two screws C attaching the right and left stoppers. (See Fig.2.)
(2) Remove the two floating springs on the bottom side of the
CD mechanism assembly. (See Fig.3.)
(3) Take out the mechanism section in an upward direction
and remove the three damper springs from the dampers.
(See Fig.4.)
Caution:
• When reassembling the mechanism section, reattach the
damper springs to the dampers respectively and insert the
three shafts on the bottom of the mechanism section to the
dampers. (See Fig.4.)
• Before inserting the shaft to the dampers, apply IPA to the
hole of damper.
B
Top cover
c
B
Damper
spring(F)
(Green)
Floating spring
Fig.3
Mechanism section
Damper
spring(R)
(Red)
Dampe
(Yellow)
C
Stopper
C
Stopper
Fig.2
Chassis base 2
d
Damper
(Black)
Damper
spring(F)
(Green)
Damper
(Black)
Fig.4
(No.MA191)1-13
Page 14
3.2.4 Removing the clamper unit
(See Figs.5 and 6)
• Remove the mechanism control board, top cover and mecha-
nism section.
(1) From the bottom side of the mechanism section, remove
the clamper 2 spring. (See Fig.5.)
(2) Release section e of the clamper spring from the bending
section of the CD chassis assembly. (See Fig.6.)
(3) Move the clamper unit 2 in the direction of the arrow and
release the joints (f, g). (See Fig.5.)
(4) Take out the clamper unit 2 in an upward direction. (See
Fig.5.)
3.2.5 Reattaching the clamper unit
(See Figs.5 to 9)
(1) From the bottom side of the mechanism section, attach the
clamper spring to the clamper unit 2. (See Figs.5 and 9.)
(2) Move the clamper unit 2 to set the joints (f, g) to each pro-
jection of the CD chassis assembly. (See Fig.5.)
(3) Make sure that section h of the clamper unit 2 is inserted to
the notch of the CD chassis assembly. (See Figs.5 and 8.)
(4) Move the clamper spring to the outside of the bending part
of the CD chassis assembly. (See Fig.6.)
Caution:
When reattaching the clamper unit 2, temporarily hook
the end of the clamper spring as shown in the figure to
make the work easy. (See Fig.9.)
(5) Attach the clamper 2 spring to the CD chassis assembly
and clamper unit 2. (See Figs.5 and 7.)
Clamper spring
f
Clamper 2 spring
CD chassis assembly
Clamper unit 2
h
g
Fig.5
Clamper spring
CD chassis assembly
e
Fig.6
1-14 (No.MA191)
Page 15
Clamper 2 spring
Clamper unit 2
CD chassis assembly
Fig.7
Clamper unit 2
Clamper unit 2
Notch
h
Fig.8
Fig.9
Clamper spring
(No.MA191)1-15
Page 16
3.2.6 Removing the front unit
(See Figs10 to 12)
• Remove the mechanism control board, top cover and mecha-
nism section.
(1) From the bottom side of the mechanism section, remove
the double-stick tape fixing the flexible wire. (See Fig.10.)
(2) From the top side of the mechanism section, remove the
screw D attaching the front unit 2. (See Figs.11 and 12.)
(3) Move the front unit 2 toward the front to release the joint i.
(See Figs.11 and 12.)
(4) Release two joints j and k on the right side of the CD chas-
sis assembly. (See Fig.12.)
(5) Take out the front unit 2 in an upward direction.
(6) Remove the double-stick tape fixing the flexible wire and
remove the two screws E attaching the switch wire. (See
Fig.12.)
Reference:
You can remove the switch wire only without removing the
front unit 2.
Double-stick tape
Front unit 2
Flexible wire
Fig.10
D
Double-stick tape
Flexible
wire
j
k
i
Fig.11
E
Switch wire
D
Front unit 2
1-16 (No.MA191)
CD chassis assembly
Fig.12
i
Page 17
3.2.7 Removing the loading arm assembly
(See Figs.13 and 14)
• Remove the mechanism control board, top cover, mechanism
section and front unit 2.
(1) From top side of the mechanism section, move the loading
arm assembly in the direction of the arrow. (See Fig.13.)
(2) Release the projections from the right and left joints (m, n)
of the CD chassis assembly. (See Figs.13 and 14.)
(3) Release the projection from notch p of the connect arm on
the right side of the mechanism section and release the
projection from notch q of the slide cam assembly on the
left side. (See Figs.13 and 14.)
Loading arm assembly
n
CD chassis assembly
p
m
Fig.13
Loading arm assembly
Side cam
assembly
q
n
CD chassis assembly
Fig.14
m
p
Connect arm
(No.MA191)1-17
Page 18
3.2.8 Removing the rod (L), rod (R) and roller assembly
(See Figs.15 and 16)
• Remove the mechanism control board, top cover, mechanism
section, front unit and loading arm assembly.
(1) From the bottom side of the loading arm assembly, release
the rod (L) and (R) from the joints r. (See Fig.15.)
(2) Remove the roller assembly from the loading arm assem-
bly. (See Fig.16.)
(3) Remove the two collars and washer from the roller assem-
bly. (See Fig.16.)
Caution:
After attaching the roller assembly to the loading arm assembly, attach the rod (L) and (R). Then attach the rods to the right
and left collars of the roller assembly. (See Fig.15.)
Collar
Rod(R) Rod(L)
r
Rod(R)
Roller assembly
Loading arm assembly
r
Collar
Rod(L)
r
r
Fig.15
Collar
Rod(L)
Washer
Roller assembly
Rod(R)
Collar
Loading arm assembly
Fig.16
1-18 (No.MA191)
Page 19
3.2.9 Removing the CD pickup
(See Figs.17 to 19)
• Remove the mechanism control board.
(1) From the bottom side of the CD mechanism assembly, turn
the feed gear in the direction of the arrow to move the CD
pickup assembly outwards. (See Fig.17.)
(2) Remove the screw F and remove the thrust spring. (See
Fig.17.)
(3) Remove the CD pickup assembly in an upward direction
from the side of L.S. gear and release the CD pickup assembly from joint s of the sub guide. (See Fig.18.)
(4) Move the lead screw of the CD pickup assembly in the di-
rection of the arrow to release at joint t. (See Fig.18.)
(5) Remove the screw G attaching the CD rack spring and CD
rack plate on the CD pickup assembly. (See Fig.19.)
(6) Pull out the lead screw. (See Fig.19.)
Caution:
• When attaching the CD pickup assembly, attach the CD
pickup assembly at joint s of sub guide first, and attach the
lead screw to the joint t on the L.S.holder 2. (See Fig.18.)
• Perform electric adjustment after replacing the pickup.
CD mechanism assembly
CD pickup assembly
Thrust spring
t
L.S.holder 2
Feed gear
F
Fig.17
CD Pickup assembly
Lead screw
Sub guide
s
CD rack spring
CD rack plate
L.S. Gear
Fig.18
G
Lead screw
CD Pickup
Fig.19
(No.MA191)1-19
Page 20
3.2.10 Removing the spindle motor
r
r
(See Fig.20)
• Remove the mechanism control board, top cover, mechanism
section and clamper unit.
(1) From the top side of the mechanism section, remove the
T.table assembly and washer from the spindle motor.
(2) Remove the two screws H attaching the spindle motor.
(3) Take out the spindle motor from the bottom side of the
mechanism section.
Caution:
Perform adjustment when reattaching the spindle motor.
3.2.11 Removing the feed motor
(See Figs.21 and 22)
• Remove the mechanism control board.
(1) From the bottom side of the CD mechanism assembly, re-
move the feed TRI. spring. (See Fig.21.)
(2) Remove the two screws J attaching the feed motor assem-
bly. (See Fig.21.)
(3) Remove the slit washer from the motor H. assembly and
pull out the worm wheel. (See Fig.22.)
(4) Remove the two screws K attaching the feed motor. (See
Fig.22.)
T. table assembly
Washer
H
Spindle moto
Fig.20
J
Feed TRI. spring
Feed motor assembly
1-20 (No.MA191)
Fig.21
Slit washer
Worm wheel
Feed moto
K
Motor H. assembly
Fig.22
Page 21
3.2.12 Removing the SW board and rest SW board
(See Fig.23)
• Remove the mechanism control board.
(1) From the bottom side of the CD mechanism assembly, re-
move the screw L attaching the SW board.
(2) Remove the screw M attaching the rest SW board.
CD mechanism assembly
ML
Rest SW boardSW board
Fig.23
(No.MA191)1-21
Page 22
SECTION 4
ADJUSTMENT
4.1 Adjustment method
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
EXTDV001-20P × 1
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
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.
Standard measuring conditions
Power supply voltage DC14.4V(11 to 16V)
Load impedance 20KΩ(2 Speakers connection)
Output Level Line out 5.0V (Vol. MAX)
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 since
direct reading of figures are applied in this working standard.
Extension cable: EXTDV001-20P
Heat sink
Rear bracket
1-22 (No.MA191)
Page 23
4.2 Service mode
4.2.1 Service mode setting
(1) Turn ON power
(2) Pressing both the DISP button and BAND button.
(3) Set to service mode
CURSOR button : BACK
CURSOR button : NEXT
OK button : SET
OK
CURSOR
SERVICE MODE (MENU)
SERVICE MODE
RUNNING MODE
DATA CLEAR
ROM COLLECTION
DSP TUNER S MODE
DSP TUNER ADJUST
SERVICE MODE
VERSION
ERR READ
CD DATA READ
T/P
PACT
DISP
BACK
BAND
DISP
BAND
PACT
VERSION
VERSION
CD ERROR READ
CD ERROR READ
CH ERROR READ
PANEL MECHA ERROR READ
A.DSP ERROR READ
T.DSP ERROR READ
SOURCE
MAIN R***
CH V***
KD-SHX751
MENU
CURSOR
CD V***
CD ERROR READ
TOTAL ERROR : ****
E1 **** E3 ****
E2 ****
1 **** 4****
2 **** 5****
3 ****
CH ERROR READ
TOTAL ERROR : ****
E1 **** E3 ****
E2 ****
1 **** 4****
2 **** 5****
3 ****
PANEL MECHA ERROR READ
TOTAL ERROR : ****
E1 **** E3 ****
E2 ****
1 **** 4****
2 **** 5****
3 ****
A.DSP ERROR READ
ERROR COUNT ***
RETRY OVER ***
T.DSP ERROR READ
RETRY ***
NG ***
AB
(No.MA191)1-23
Page 24
AB
f
f
CD DATA READ
ADJ NOW
ADJ INT
OTHERS
RUNNING MODE
RUNNING MODE 1
RUNNING MODE 2
RUNNING MODE 3
RUNNING MODE 4
RUNNING MODE 1
COUNT : ******
ERROR : ******
RUNNING MODE 2
COUNT : ******
ERROR : ******
RUNNING MODE 3
COUNT : ******
ERROR : ******
RUNNING MODE 4
COUNT : ******
ERROR : ******
ADJ NOW
FEB ** FEO ** TEB ** RFG**
FGA ** TEO ** TGA **
ADJ INT
FEB ** FEO ** TEB ** RFG**
FGA ** TEO ** TGA **
OTHERS
IOP TEMP I** T** TOP INT
TEMP MIX ** P TOTAL ****H
Running mode1
Loading TOC reading 1st Tr playing (30s)
Last Tr playing (30s) Eject
Running mode2
Loading TOC reading 1st Tr playing (30s)
Last Tr playing (30s) Eject
Running mode3
Loading Check completed Eject
Running mode 4
Loading TOC reading Last Tr playing (1s)
Eject
ADJ NOW
The auto adjustment value o
survo at now
ADJ INT
The auto adjustment value o
survo at initial
DATA CLEAR
EPROM CLEAR
NAME CLEAR
CD ERROR CLEAR
CH ERROR CLEAR
PANEL MECHA ERROR CLEAR
PICTURE CLEAR
A.DSP ERROR CLEAR
T.DP ERROR CLEAR
EPROM CLEAR
NOW...
NAME CLEAR
NOW...
CD ERROR CLEAR
NOW...
CH ERROR CLEAR
NOW...
PANEL MECHA ERROR CLEAR
NOW...
EPROM CLEAR
NAME CLEAR
CD ERROR CLEAR
CH ERROR CLEAR
PANEL MECHA ERROR CLEAR
CD
1-24 (No.MA191)
Page 25
CD
PICTURE CLEAR
NOW...
PICTURE CLEAR
A.DSP ERROR CLEAR
NOW...
A.DSP ERROR CLEAR
T.DSP ERROR CLEAR
NOW...
T.DSP ERROR CLEAR
ROM COLLECTION
MAIN DATA CLEAR
MAIN DATA CLEAR
NOW...
MAIN DATA CLEAR
DSP TUNER S MODE
VER=V*** SPI=**
PI=**** ***.** SMI=***%
PTY=** ******* MP=***%
TP/TA=*/* EON ADJ=***%
MS/DI=*/* STERO BW=*
AF
** ** ** ** ** ** **
** ** ** ** ** ** **
** ** ** **
RDS ENGINNER MODE
RDS model only
RDS ENGINNER MODE
SYNC=**
PIC=***
AFC=***
SMTH1=*****
SMTH2=*****
MP=******
ADJ=******
SM L=******
SMM1=******
SMM2=******
SYNC=*
PIC=****s
AFC=****s
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
SYNC=**
Select the value with
"CURSOR" button.
PIC=****s
Select the value with
"CURSOR" button.
AFC=****s
Select the value with
"CURSOR" button.
EF
(No.MA191)1-25
Page 26
EF
SMTH1=******
SMTH2=******
MP=******
ADJ=******
SM L=******
SMM1=******
SMM2=******
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
DEFAULT * BACK
ENTER : OK
SMTH1=******
Select the value with
"CURSOR" button.
SMTH2=******
Select the value with
"CURSOR" button.
MP=******
Select the value with
"CURSOR" button.
ADJ=******
Select the value with
"CURSOR" button.
SM L=******
Select the value with
"CURSOR" button.
SMM1=******
Select the value with
"CURSOR" button.
SMM2=******
Select the value with
"CURSOR" button.
DSP TUNER AJUST
AUTO ADJUSTMENT
MANUAL ADJUSTMENT
RDS model only
1.FM DAA
87.5MHz
2.FM DAA
97.9MHz
3.FM DAA
108.0MHz
4.FM S.MATER
97.9MHz
5.FM S.MATER
97.9MHz 7
40dBuV 0%
40dBuV 0%
40dBuV 0%
40dBuV 0%
0dBuV 0%
1.FM DAA
87.5MHz
2.FM DAA
97.9MHz
3.FM DAA
108.0MHz
4.FM S.MATER
97.9MHz
5.FM S.MATER
97.9MHz 7
40dBuV 0%
40dBuV 0%
40dBuV 0%
40dBuV 0%
High or Low or No Signal
0dBuV 0%
High or Low or No Signal
No Signal
No Signal
No Signal
1-26 (No.MA191)
6.FM FULL SEPARATION
97.9MHz 7
Lch 40MHz mod 1kHz
0dBuV 0%
G H
6.FM FULL SEPARATION
97.9MHz 7
0dBuV 0%
Adjustment NG or No Signal
J
Page 27
G H
J
7.FM IF COUNTER
97.9MHz 7
8.AM S.METER
999kHz 26
9.AM S.METER
999kHz 56
10.AM IF COUNTER
999kHz 56
AUTO ADJUSTMENT
COMPLETED
0dBuV 0%
dBuV 0%
dBuV 0%
dBuV 0%
MANUAL ADJUSTMENT
1.FM DAA
87.5MHz
2.FM DAA
97.9MHz
40dBuV 0%
40dBuV 0%
Press OK
Press OK
7.FM COUNTER
97.9MHz 7
8.AM S.METER
999kHz 26
9.AM S.METER
999kHz 56
10.AM IF COUNTER
999kHz 56
1.FM DAA
87.5MHz
2.FM DAA
97.9MHz
0dBuV 0%
Adjustment NG or No Signal
dBuV 0%
High or Low or No Signal
dBuV 0%
High or Low or No Signal
dBuV 0%
Adjustment NG or No Signal
40dBuV 0%
40dBuV 0%
POWER
POWER OFF
(ADJUSTMENT MODE FINISH)
No Signal
No Signal
3.FM DAA
108.0MHz
4.FM S.MATER
97.9MHz
5.FM S.MATER
97.9MHz 7
6.FM FULL SEPARATION
97.9MHz 7
Lch 40MHzmod 1kHz
7.FM IF COUNTER
97.9MHz 7
8.AM S.METER
999kHz 26
9.AM S.METER
999kHz 56
10.AM IF COUNTER
999kHz 56
40dBuV 0%
40dBuV 0%
0dBuV 0%
0dBuV 0%
0dBuV 0%
dBuV 0%
dBuV 0%
dBuV 0%
Press OK
Press OK
Press OK
Press OK
Press OK
Press OK
Press OK
Press OK
3.FM DAA
108.0MHz
4.FM S.MATER
97.9MHz
5.FM S.MATER
97.9MHz 7
6.FM FULL SEPARATION
97.9MHz 7
7.FM COUNTER
97.9MHz 7
8.AM S.METER
999kHz 26
9.AM S.METER
999kHz 56
10.AM IF COUNTER
999kHz 56
40dBuV 0%
40dBuV 0%
High or Low or No Signal
0dBuV 0%
High or Low or No Signal
0dBuV 0%
Adjustment NG or No Signal
0dBuV 0%
Adjustment NG or No Signal
dBuV 0%
High or Low or No Signal
dBuV 0%
High or Low or No Signal
dBuV 0%
Adjustment NG or No Signal
No Signal
MANUAL ADJUSTMENT
COMPLETED
POWER
POWER OFF
(ADJUSTMENT MODE FINISH)
(No.MA191)1-27
Page 28
4.2.2 Error code of front panel mechanism
PANEL ANGLE
1
2
3
4
OPEN
PANEL
CLOSE
10 degrees
20 degrees
30 degrees
OPEN
Details
OPEN error
1.Time out error by OPEN position cannot detect.
CLOSE error (ANGLE 1 error)
1.Time out error by ANGLE 1 position cannot detect.
Angle positioning error
Moving to 10 degrees (ANGLE 2 error)
1.Time out error by ANGLE 2 position cannot detect at moving to open position.
2. Missing to ANGLE 1 and detected ANGLE 2 position at moving to open position.
3.Time out error by ANGLE 2 cannot detect at moving to close position.
MAIN BODY
ERROR CODE
(SERVICE MODE)
0A01
0B06
0D21
0D22
0D23
ERROR CODE
(NORMAL)
ERR
01
06
21
22
23
Moving to 20 degrees (ANGLE 3 error)
1.Time out error by ANGLE 3 position cannot detect at moving to open position.
2. Missing to ANGLE 2 and detected ANGLE 3 position at moving to open position.
3.Time out error by ANGLE 3 cannot detect at moving to close position.
Moving to 30 degrees (ANGLE 4 error)
1.Time out error by ANGLE 4 position cannot detect at moving to open position.
2. Missing to ANGLE 3 and detected ANGLE 4 position at moving to open position.
3.Time out error by ANGLE 4 cannot detect at moving to close position.
Abnormal switch position at moving panel
The panel move to open and close potisiton,detected abnormal switch position.
0E31
0E32
0E33
0F41
0F42
0F43
31
32
33
41
42
43
0A00 00
1-28 (No.MA191)
Page 29
5.1 Feed section
SECTION 5
TROUBLESHOOTING
Is 2V at IC601 pin 63?
YES
Is 4V present at both
sides of the feed motor?
YES
Check the feed motor.
5.2 Focus section
5.3 Spindle section
NO
Is the wiring for IC601
pin 63 correct?
NO
Is 2V present at IC681
pins 1 and 27?
Check IC681.
When the lens is
moving:
Does the S-search
waveform appear at
IC681 pins 10 and 11?
NO
NO
YES
4V
YES
YES
Is 8V present at IC681
pins 3 and 12?
Check the vicinity of
IC601.
Check the feed motor
connection wiring.
NO
Check the circuits in
the vicinity of IC681
pins 13 and 14.
Check the pickup and
its connections.
NO
Check CD8V.
YES
YES
Is the disk rotated?
YES
Does the RF signal
appear at IC601 pin 26?
YES
Is the RF waveform
at IC601 pin 26 distorted?
YES
Proceed to the Tracking
section
5.4 Tracking section
When the disc is rotated
at first:
Is the tracking error
signal output at IC601
pin 57?
NO
Is 4V present between
IC681 pins 6 and 7?
Check the spindle motor
and its wiring.
NO
Check the circuits in
the vicinity of IC601
or the pickup.
NO
NO
Approx. 1.2V
YES
NO
YES
Check the circuits in
the vicinity of IC601
pins 48 and 49 .
Is 4V present at IC601
pin 64?
YES
Check the vicinity of
IC681.
NO
Check the pickup and
its connections.
NO
Check IC601.
Check IC601.
(No.MA191)1-29
Page 30
5.5 Signal processing section
Is the sound output from
both channels (L, R)?
YES
Normal
NO
No sound from either
channel.
Is 9V present at IC165
/IC265 pin 16?
Is 5V present at IC365
pina 2, 3, 9 and 10?
Is 7V present at IC951
pina 3, 5, 7, 9, 17, 19
21 and 23?
YES
YES
YES
YES
Compare the L-ch and
NO
R-ch to locate the
defective point.
NO
Is 9V present at IC901
pin 10?
Check the connection
between IC901 pin10
and IC165/IC265 pin
16.
NO
Check the vicinity of
IC365.
NO
Check the power amp.
IC951.
YES
NO
Check IC901 and its
peripheral circuits.
Check the speaker
connector and its
connection.
1-30 (No.MA191)
Page 31
5.6 Maintenance of laser pickup
(1) Cleaning the pick up lens
Before you replace the pick up, please try to clean the lens
with a alcohol soaked cotton swab.
(2) Life of the laser diode
When the life of the laser diode has expired, the following
symptoms will appear.
• The level of RF output (EFM output: amplitude of eye
pattern) will be low.
5.7 Replacement of laser pickup
Turn of the power switch and, disconnect the
power cord.
Replace the pickup with a normal one. (Refer
to "Removing the pickup unit" on the previous page.)
Is RF output
1.3 0.4Vp-p?
NO
Replace it.
YES
OK
(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed circuit board
which is attached to the pickup is used to adjust the laser
power.Since this adjustment should be performed to match
the characteristics of the whole optical block, do not touch
the semi-fixed resistor.
If the laser power is lower than the specified value, the laser diode is almost worn out, and the laser pickup should
be replaced. If the semi-fixed resistor is adjusted while the
pickup is functioning normally, the laser pickup may be
damaged due to excessive current.
Plug the power cord in, and turn the power on.
At this time, check that the laser emits for about
seconds and the objective lens moves up and down.
Note: Do not observe the laser beam directly.
Play a disc.
Check the eye-pattern at
RF test point.
Finish.
(No.MA191)1-31
Page 32
5.8 16 PIN CORD DIAGRAM (for KD-AR8500)
8
GN/BK
7
6
VI/BK
5
4
3
BL/WH
2
1
1
6
2
15
9
10
12 GY
11
GN
VI
BL
RD
BK
BK
YL
RD
OR/WH
WH
WH/BK
GY/BK
WH
WH/BK
GY/BK
GY
BR
NC
OR/WH
YL
10
11
12
13
14
15
16
9
BK
RD
BL
Black
Red
Blue
WH White
BR
Brown
GN
Green
VI Violet
GY
YL
Gray
Yellow
OR Orange
GND
MEMORY
GND
Choking Coil
ACC
ILL
ILLUMINATION
FL+
CONTROL
FL-
FR+
FR-
8
7
5
6 VI/BK
4
RR
FR
FL
RL
REMOTE
GN
GN/BK
VI
BL
3 BL/WH
13 BR
Rear Right
Front Right
Front Left
Rear Left
Remote out
POWER ANTENNA
REMOTE OUT
TEL MUTING
RL+
RL-
RR+
RR-
ANT
REMOTE
TEL
ANT
ACC
ILL
GND
MEMORY
Auto Antenna
ACC Line
Illuminations Control
Ground
Memory Backup Battery+
1-32 (No.MA191)
TEL
Telephone muting
Page 33
5.9 16 PIN CORD DIAGRAM (for KD-SHX850)
8
GN/BK
7
6
VI/BK
5
4
3
BL/WH
2
1
1
6
2
15
9
10
12 GY
GN
VI
BL
RD
BK
BK
YL
RD
OR/WH
WH
WH/BK
WH
WH/BK
GY/BK
GY
NC
NC
OR/WH
YL
10
11
12
13
14
15
16
9
BK
RD
BL
Black
Red
Blue
WH White
GN
Green
VI Violet
GY
YL
Gray
Yellow
OR Orange
GND
MEMORY
ACC
ILL
FL+
FL-
FR+
Choking Coil
ILLUMINATION
CONTROL
GND
RR
11
GY/BK
8
GN
GN/BK
7
5
VI
6 VI/BK
BL
4
3 BL/WH
Rear Right
POWER ANTENNA
REMOTE OUT
FR-
RL+
RL-
RR+
RR-
ANT
REMOTE
ANT
Auto Antenna
FR
FL
RL
REMOTE
Front Right
Front Left
Rear Left
Remote out
ACC
ILL
GND
MEMORY
ACC Line
Illuminations Control
Ground
Memory Backup Battery+
(No.MA191)1-33
Page 34
Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.MA191)
Printed in Japan
VPT
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