JVC DX-J35EE User manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.MB620
2007/7
COMPACT COMPONENT SYSTEM
MB62020077SERVICE MANUAL
DX-J35EE, DX-J35UX,DX-J35UG, DX-J35UN,
DX-J20EE, DX-J20UW,DX-J10EE
COPYRIGHT © 2007 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
SUPER VIDEO
CA-DXJ35
SUPER VIDEO
CA-DXJ10 SP-DXJ10 SP-DXJ20W SP-DXJ20F SP-DXJ20FSP-DXJ10 CA-DXJ20
SP-DXJ35F SP-DXJ35F
SP-DXJ35C
SP-DXJ35SSP-DXJ35S

1-2 (No.MB620)
SPECIFICATION
DX-J35EE
Design and specifications are subject to change without notice.
Amplifier section Output Power FRONT SPEAKERS 100 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
SURROUND SPEAKERS 50 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
CENTER SPEAKER 50 W min. RMS driven into 6 Ωat 1 kHz with no more than 10%
total harmonic distortion.
Audio output SUBWOOFER OUT
Digital input USB memory
Audio input sensitivity/Im-
pedance
(Measured at 1 kHz with tape
recording signal 300 mV)
AUX 400 mV/47 k Ω
MIC1/2 3.0 mV/50 k Ω
VIDEO OUT Color system NTSC/NTSC PROG/PAL/PAL PROG
VIDEO (composite) 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C(chrominance,
burst): NTSC
0.286 V(p-p)/75 Ω
C(chrominance,
burst): PAL
0.3 V(p-p)/75 Ω
COMPONENT
(Interlace/Progressive)
(Y) 1 V(p-p)/75 Ω
(PB/PR) 0.7 V(p-p)/75 Ω
Speaker Terminals 6 Ω- 16 Ω(front speakers/subwoofers)
Tuner section FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 522 kHz - 1 629 kHz
Disc/File player section Playable disc DVD Video/DVD Audio/CD/VCD/SVCD
CD-R/CD-RW
(CD/VCD/SVCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-R/-RW
(DVD-VR/DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
+R/+RW
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-ROM
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
Playable file MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
USB storage section USB specification Compatible with USB 2.0 Full-Speed
Compatible device Mass storage class
Compatible file system FAT 16, FAT 32
Bus power supply 5 V/500 mA
Cassette deck section Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 230 V , 50 Hz
Power consumption 205 W (at operation) / 21 W (on standby)
Dimensions (W/H/D) (approx.) 185 mm x 370 mm x 372 mm
Mass (approx.) 9.5 kg

(No.MB620)1-3
DX-J35UX,UG,UN
Design and specifications are subject to change without notice.
Amplifier section Output Power FRONT SPEAKERS 100 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
SURROUND SPEAKERS 50 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
CENTER SPEAKER 50 W min. RMS driven into 6 Ωat 1 kHz with no more than 10%
total harmonic distortion.
Audio output SUBWOOFER OUT
Digital input USB memory
Audio input sensitivity/Im-
pedance
(Measured at 1 kHz with tape
recording signal 300 mV)
AUX 400 mV/47 k Ω
MIC1/2 3.0 mV/50 k Ω
VIDEO OUT Color system NTSC/NTSC PROG/PAL/PAL PROG
VIDEO (composite) 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C(chrominance,
burst): NTSC
0.286 V(p-p)/75 Ω
C(chrominance,
burst): PAL
0.3 V(p-p)/75 Ω
COMPONENT
(Interlace/Progressive)
(Y) 1 V(p-p)/75 Ω
(PB/PR) 0.7 V(p-p)/75 Ω
Speaker Terminals 6 Ω- 16 Ω(front speakers/subwoofers)
Tuner section FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 531 kHz - 1 710 kHz (at 9 kHz)
530 kHz - 1 710 kHz (at 10 kHz)
(For Saudi Arabia) 531 kHz - 1 602 kHz (at 9 kHz)
(For Saudi Arabia) 530 kHz - 1 600 kHz (at 10 kHz)
Disc/File player section Region codes Middle East 2
South East Asia 3
Central and south America, Australia 4
Playable disc DVD Video/DVD Audio/CD/VCD/SVCD
CD-R/CD-RW
(CD/VCD/SVCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-R/-RW
(DVD-VR/DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
+R/+RW
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-ROM
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
Playable file MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
USB storage section USB specification Compatible with USB 2.0 Full-Speed
Compatible device Mass storage class
Compatible file system FAT 16, FAT 32
Bus power supply 5 V/500 mA
Cassette deck section Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 110 V / AC 127 V / AC 220 V / AC 230 V - AC 240 V
(adjustable with the voltage selector) 50 Hz / 60 Hz
(For Australian model) AC 240 V , 50 Hz
Power consumption 205 W (at operation) / 21 W (on standby)
Dimensions (W/H/D) (approx.) 185 mm x 370 mm x 372 mm
Mass (approx.) 9.5 kg

1-4 (No.MB620)
DX-J20EE/DX-J10EE
Design and specifications are subject to change without notice.
Amplifier section Output Power FRONT SPEAKERS 100 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
SUBWOOFERS 100 W min. RMS driven into 6 Ωat 63 Hz with no more than 10%
total harmonic distortion.
Digital output OPTICAL DIGITAL OUTPUT -21 dBm to -15 dBm (660 nm ±30 nm)
Digital input USB MEMORY
Audio input sensitivity/Im-
pedance
(Measured at 1 kHz with tape re-
cording signal 300 mV)
AUX 400 mV/47 k Ω
MIC1/2 3.0 mV/50 k Ω
VIDEO OUT Color system NTSC/PAL
VIDEO (composite) 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C(chrominance,
burst): NTSC
0.286 V(p-p)/75 Ω
C(chrominance,
burst): PAL
0.3 V(p-p)/75 Ω
Speaker Terminals 6 Ω- 16 Ω(front speakers/subwoofers)
Tuner section FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 522 kHz - 1 629 kHz
Disc/File player section Playable disc DVD Video/CD/VCD/SVCD
CD-R/CD-RW
(MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-R/-RW
(DVD-VR/DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
+R/+RW
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-ROM
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
Playable file MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
USB storage section USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible file system FAT 16, FAT 32
Bus power supply 5 V/500 mA
Cassette deck section Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 230 V , 50 Hz
Power consumption CA-DXJ10 95 W (at operation) / 15 W (on standby)
CA-DXJ20 140 W (at operation) / 16 W (on standby)
Dimensions (W/H/D) (approx.) 185 mm x 370 mm x 372 mm
Mass (approx.) CA-DXJ10 8.9 kg
CA-DXJ20 9.3 kg

(No.MB620)1-5
DX-J20UW
Design and specifications are subject to change without notice.
Amplifier section Output Power FRONT SPEAKERS 100 W per channel min. RMS driven into 6 Ωat 1 kHz with no
more than 10% total harmonic distortion.
SUBWOOFERS 100 W min. RMS driven into 6 Ωat 63 Hz with no more than
10% total harmonic distortion.
Digital output OPTICAL DIGITAL OUTPUT -21 dBm to -15 dBm (660 nm ±30 nm)
Digital input USB MEMORY
Audio input sensitivity/Im-
pedance
(Measured at 1 kHz with tape
recording signal 300 mV)
AUX 400 mV/47 k Ω
MIC1/2 3.0 mV/50 k Ω
VIDEO OUT Color system NTSC/PAL
VIDEO (composite) 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C(chrominance,
burst): NTSC
0.286 V(p-p)/75 Ω
C(chrominance,
burst): PAL
0.3 V(p-p)/75 Ω
Speaker Terminals 6 Ω- 16 Ω(front speakers/subwoofers)
Tuner section FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 531 kHz - 1 710 kHz (at 9 kHz)
530 kHz - 1 710 kHz (at 10 kHz)
(For Saudi Arabia) 531 kHz - 1 602 kHz (at 9 kHz)
(For Saudi Arabia) 530 kHz - 1 600 kHz (at 10 kHz)
Disc/File player section Region codes Middle East 2
South East Asia 3
Central and South America, Australia 4
Playable disc DVD Video/CD/VCD/SVCD
CD-R/CD-RW
(MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-R/-RW
(DVD-VR/DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
+R/+RW
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
DVD-ROM
(DVD-video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format)
Playable file MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/ASF/DivX format
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
USB storage section USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible file system FAT 16, FAT 32
Bus power supply 5 V/500 mA
Cassette deck section Frequency response Normal (type I) 50 Hz - 14 000 Hz
Wow and flutter 0.15% (WRMS)
General Power requirement AC 110 V / AC 127 V / AC 220 V /AC 230 V - AC 240 V
(adjustable with the voltage selector) 50 Hz / 60 Hz
(For Australia) AC 240 V , 50 Hz
Power consumption 140 W (at operation) / 16 W (on standby)
Dimensions (W/H/D) (approx.) 185 mm x 370 mm x 372 mm
Mass (approx.) 9.3 kg

1-6 (No.MB620)
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

(No.MB620)1-7
1.5 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.6 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a
time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the card wire is disconnected from the connecto on the servo board. (If the card wire
is disconnected without applying solder, the pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the card wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
DVD changer mechanism assembly
Switch board
DVD traverse mechanism assembly
DVD servo board

1-8 (No.MB620)
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.MB620)1-9
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-10 (No.MB620)
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the METAL COVER (See Fig.1, 2)
(1) Remove the two screws Aattaching the REAR COVER.
(See Fig.1)
(2) Remove the seven screws Battaching the METAL COV-
ER. (See Fig.1)
(3) Remove the four screws Cattaching the both side of MET-
AL COVER. (See Fig.2)
Fig.1
Fig.2
B
B
A
C

(No.MB620)1-11
3.1.2 Removing the DVD MECHANISM assembly (See Fig.3 to 5)
(1) Disconnect the card wires from MICON BOARD assembly
connected to connector CN701 and CN801 of the DVD
BOARD assembly. (See Fig.3)
(2) Disconnect the card wire from AMP BOARD assembly con-
nected to connector CN702 of the DVD BOARD assembly.
(See Fig.3)
(3) Disconnect the card wire from SURROUND BOARD as-
sembly connected to connector CN703 of the DVD BOARD
assembly. (See Fig.3)
(4) Remove the two screws Dattaching the DVD MECHA-
NISM assembly. (See Fig.4)
(5) Disconnect the connector wire from USB BOARD assem-
bly connected to connector CN811 of the DVD BOARD as-
sembly. (See Fig.5)
Fig.3
Fig.4
Fig.5
CN701 CN703
CN702 CN801
D
CN811

1-12 (No.MB620)
3.1.3 Removing the VIDEO BOARD assembly (See Fig.6, 7)
(1) Disconnect the card wire from MICON BOARD assembly
connected to connector CN931 of the VIDEO BOARD as-
sembly. (See Fig.6)
(2) Remove the three screws Eattaching the VIDEO BOARD
assembly. (See Fig.7)
Fig.6
Fig.7
CN931
E

(No.MB620)1-13
3.1.4 Removing the MECHA CHASSIS (See Fig.8, 9)
(1) Remove the two screws Fattaching the MECHA CHAS-
SIS. (See Fig.8)
(2) Remove the two screws Gattaching the both side of
MECHA CHASSIS. (See Fig.9)
Fig.8
Fig.9
F
G

1-14 (No.MB620)
3.1.5 Removing the FAN (See Fig 10, 11)
(1) Disconnect the connector wire from FAN connected to con-
nector CN630 of the MICON BOARD assembly. (See
Fig.10)
(2) Remove the one screw Hattaching the FAN. (See Fig.11)
Fig.10
Fig.11
CN630
H

(No.MB620)1-15
3.1.6 Removing the TUNER PACK (See Fig.12, 13)
(1) Disconnect the card wire from TUNER PACK connected to
connector CN507 of the MICON BOARD assembly. (See
Fig.12)
(2) Remove the two screws Jattaching the TUNER PACK.
(See Fig.13)
Fig.12
Fig.13
CN507
J

1-16 (No.MB620)
3.1.7 Removing the REAR PANEL (See Fig.14)
(1) Remove the four screws Kattaching the HEAT SINK.
(2) Remove the nine screws Lattaching the REAR PANEL.
Fig.14
K
L

(No.MB620)1-17
3.1.8 Removing the AMP and SURROUND BOARD assembly (See Fig.15, 16)
(1) Disconnect the card wires from MICON BOARD assembly
connected to connector CN705 and CN706 of the AMP
BOARD assembly. (See Fig.15)
(2) Disconnect the card wire from HEADPHONE BOARD as-
sembly connected to connector CN760 of the MICON
BOARD assembly. (See Fig.15)
(3) Disconnect the card wire from MIC BOARD assembly con-
nected to connector CN750 of the AMP BOARD assembly.
(See Fig.16)
(4) Disconnect the card wire from MICON BOARD connected
to connector CN700, CN701 and CN702 of the AMP
BOARD assembly. (See Fig.16)
(5) Disconnect the EARTH WIRE from BOTTOM CHASSIS
connected post pin PP702 of the AMP BOARD assembly.
(See Fig.16)
(6) Remove the one screw Mattaching the AMP BOARD as-
sembly. (See Fig.15)
Fig.15
Fig.16
CN705 M CN706CN760
CN750CN702CN701CN700
PP702

1-18 (No.MB620)
3.1.9 Removing the MICON BOARD assembly (See Fig.17)
(1) Disconnect the power cord from connector CN410 of the
MICON BOARD assembly.
(2) Disconnect the card wire from FL BOARD assembly con-
nected to connector CN500 of the MICON BOARD assem-
bly.
(3) Disconnect the card wire from CASSETTE MECHANISM
BOARD assembly connected to connector CN501 of the
MICON BOARD assembly.
(4) Disconnect the card wire from PLAY BOARD assembly
connected to connector CN430 of the MICON BOARD as-
sembly.
(5) Remove the POWER TRANSFORMER.
Fig.17
3.1.10 Removing the FRONT PANEL assembly (See Fig.18, 19)
(1) Remove the one screw Nattaching the EARTH WIRE from
USB BOARD assembly. (See Fig.18)
(2) Remove the one screw Pattaching the EARTH WIRE from
MIC BOARD assembly. (See Fig.19)
(3) Disengage two hooks bengaged both side of FRONT
PANEL assembly. (See Fig.19)
Fig.18
Fig.19
CN500 CN501
CN410CN430
N
Phook b

(No.MB620)1-19
3.1.11 Removing the SURROUND BOARD assembly (See Fig.20 to 22)
(1) Disconnect the card wire from SURROUND BOARD as-
sembly connected to connector CN711 and CN712 of the
AMP BOARD assembly. (See Fig.20)
(2) Disconnect the card wire from AMP BOARD assembly con-
nected to connector CN310 of the SURROUND BOARD
assembly. (See Fig.21)
(3) Remove the one screw Qattaching the EARTH BRACKET.
(See Fig.22)
(4) Remove the two screws Rattaching the POWER IC. (See
Fig.22)
Fig.20
Fig.21
Fig.22
CN712 CN711
CN310
QR

1-20 (No.MB620)
3.1.12 Removing the B CASSETTE MECHANISM assembly (See Fig.23, 24)
(1) Disconnect the connector wire from B CASSETTE MECH-
ANISM assembly connected to connector CN200 of the A
CASSETTE MECHANISM BOARD assembly. (See
Fig.23)
(2) Disconnect the card wire from B CASSETTE MECHANISM
connected to connector CN120 of the A CASSETTE
MECHANISM BOARD assembly. (See Fig.23)
(3) Remove the two screws Sattaching the bracket board.
(See Fig.23)
(4) Remove the four screws Tattaching the B CASSETTE
MECHANISM assembly. (See Fig.24)
Fig.23
Fig.24
S
CN200CN120
T