JVC MX-JD8 User manual

SERVICE MANUAL
COPYRIGHT © 2004 Victor Company of Japan, Limited No.MB282
2004/7
COMPACT COMPONENT SYSTEM
MB28220047
MX-JD8
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
Area suffix
US ------------------------ Singapore
UW ----------- Brazil,Mexico,Peru
UX -------------------- Saudi Arabia
UN ----------------------------- Asean
CA-MXJD8

1-2 (No.MB282)
SPECIFICATION
Design and specifications are subject to change without notice.
Amplifier section Output Power FRONT MAIN SPEAKERS 55 W per channel, min. RMS, driven into 6 Ωat 1 kHz with
no more than 10% total harmonic distortion.
FRONT SUBWOOFERS 140 W per channel, min. RMS, driven into 6 Ωat 63 Hz with
no more than 10% total harmonic distortion.
CENTER SPEAKER 50 W, min. RMS, driven into 8 Ωat 1 kHz with no more than
10% total harmonic distortion.
SURROUND SPEAKERS 30 W per channel, min. RMS, driven into 16 Ωat 1 kHz with
no more than 10% total harmonic distortion.
Digital output OPTICAL DIGITAL OUT-
PUT
-21 dBm to -15 dBm (660 nm ±30 nm)
Audio input sensi-
tivity/Impedance
(Measured at 1
kHz, with tape re-
cording signal 300
mV)
AUX IN 300 mV/47 kΩ
MIC 1/2 3.0 mV/50 kΩ
VIDEO OUT Color system NTSC/PAL selectable
VIDEO (composite) 1 V(p-p)/75 Ω
S-VIDEO Y (luminance):1 V(p-p)/75 Ω
C (chrominance, burst):0.286 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 Front main speakers 6 Ω- 16 Ω
Center speakers 8 Ω- 16 Ω
Surround speakers 16 Ω- 32 Ω
Front subwoofers 6 Ω- 16 Ω
Others AV COMPU LINKx2 (Ø 3.5)
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)
Disc player section Playable disc DVD Video/DVD Audio/CD/VCD/SVCD
CD-R/CD-RW (recorded in Audio CD/ Video CD/ Super Vid-
eo CD/ MP3/ WMA/ JPEG/MPEG-4 format)
DVD-R/DVD-RW (recorded in video format)
Dynamic range 90 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
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
Power consumption 325 W (at operation) 22 W (on standby)
Dimensions (approx.) 265 mm ×335 mm ×352 mm (W/H/D)
Mass (approx.) 9.1 kg

(No.MB282)1-3
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

1-4 (No.MB282)
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 flexible wire is disconnected from the connecto on the servo board. (If the flexible
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 flexible wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
Traverse mechanism assembly
Pickup
Short land section
Card wire
Connector

(No.MB282)1-5
1.8 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.
REPRODUCTION AND POSITION OF LABELS
CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
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)
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
CLASS 1
LASER PRODUCT
CAUTION : Visible and Invisible
laser radiation when open and
interlock failed or defeated.
AVOID DIRECT EXPOSURE TO
BEAM. (e)
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)
ADVARSEL : Synlig og usynlig
laserstråling når maskinen er
åben eller interlocken fejeler.
Undgå direkte eksponering til
stråling. (d)
WARNING LABEL

1-6 (No.MB282)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MB282)1-7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the metal cover
(See Figs.1 to 3)
(1) From the both sides of the main body, remove the two
screws Aattaching the metal cover. (See Figs.1 and 2.)
(2) From the back side of the main body, remove the six
screws Battaching the metal cover. (See Fig.3.)
(3) Remove the metal cover from the main body while lifting
the rear section of the metal cover in the direction of the ar-
row. (See Figs.1 and 2.)
Fig.1
Fig.2
Fig.3
Metal cover
A
Metal cover
A
Metal cover B
BB

1-8 (No.MB282)
3.1.2 Removing the front panel assembly
(See Figs.4 to 7)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the right side of the main body, remove the screw C
attaching the earth wires on the reverse side of the main
board. (See Fig.4.)
Reference:
After attaching the earth wires, fix them with a spacer as
before. (See Fig.4.)
(2) Remove the plastic rivet attaching the main board. (See
Fig.4.)
(3) From the inside of the main body, disconnect the card wires
from the connectors (CN303, CN860, CN880) on the for-
ward side of the main board. (See Fig.4.)
(4) Remove the wire clamp fixing the wires and disconnect the
wires from the connectors (CN301, CN302) on the forward
side of the main board. (See Fig.5.)
Reference:
After connecting the wires to the connectors, fix the wires
with the wire clamp as before. (See Fig.5.)
(5) Disconnect the wire from the connector CN454 on the for-
ward side of the main board. (See Fig.5.) [UW version
only]
(6) From the left side of the main body, disconnect the parallel
wire from the connector CN101 on the transformer board.
(See Fig.5.)
(7) Disconnect the wire from the connector CN119 on the
transformer board. (See Fig.5.)
Reference:
After connecting the wire, pass the wire through the slot
aof the holder board as before. (See Fig.5.)
(8) Remove the tie band fixing the wire and disconnect the
wire from the connector CN106 on the speaker terminal
board. (See Fig.5.)
Reference:
• After connecting the wire, fix the wire with a new tie
band as before. (See Fig.5.)
• After connecting the wire, pass the wire through the
slot aof the holder board as before. (See Fig.5.)
(9) From the top side of the main body, remove the two screws
Dattach the front panel assembly to the main body. (See
Fig.6.)
(10) From the bottom side of the main body, remove the three
screws Eand two screws Fattaching the front panel as-
sembly. (See Fig.7.)
(11) Release the claws b, remove the front panel assembly
from the main body in the direction of the arrow. (See
Fig.7.)
Fig.4
Fig.5
Main board
Earth wires
Spacer
CN303
CN860
Plastic rivet
CN880
C
CN301
CN101
CN119
Tie band
Transformer board
Speaker terminal board
CN106
Parallel wire
a
CN302
wires
Wire clamp
Main board
Parallel
wire
Wire
Holder board
CN454
Wire

(No.MB282)1-9
Fig.6
Fig.7
Front panel assembly
D
D
Front panel assembly
E
F
b
b
E

1-10 (No.MB282)
3.1.3 Removing the tuner
(See Figs.8 and 9.)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the card
wire from the connector CN21 on the main board. (See
Fig.8.)
(2) From the back side of the main body, remove the two
screws Gattaching the tuner to the rear panel. (See Fig.9.)
3.1.4 Removing the video board
(See Figs.8 and 9.)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the top side of the main body, disconnect the card
wire from the connector CN410 on the main board. (See
Fig.8.)
(2) From the back side of the main body, remove the three
screws Hattaching the video board to the rear panel. (See
Fig.9.)
Fig.8
Fig.9
CN410 CN21 Main board
Video boardCard wires
Tuner
Rear panel
H
G

(No.MB282)1-11
3.1.5 Removing the rear panel
(See Figs.8 to 11)
• Prior to performing the following procedures, remove the metal
cover.
(1) From the back side of the main body, remove the screw J
attaching the rear cover. (See Fig.10.)
(2) Release the sections cand remove the rear cover from the
rear panel. (See Fig.10.)
(3) Remove the two screws Kand eighteen screws Lattaching
the rear panel. (See Fig.11.)
(4) Remove the screw L’ attaching the rear panel.(See
Fig.11.) [US/UX/UN version only]
Reference:
Remove the tuner and video board as required. (See
Figs.8 and 9.)
(5) From the both sides of the main body, release the sections
dof the center chassis in the direction of the arrow and re-
lease the joints e attaching the rear panel to the bottom
chassis. (See Fig. 11.)
Fig.10
Fig.11
Rear panelRear cover
J
c
Bottom chassis
Rear panel L
L
K
L
L
e e
d
L'

1-12 (No.MB282)
3.1.6 Removing the DVD mechanism assembly
(See Figs.12 and 13)
• Prior to performing the following procedures, remove the metal
cover, tuner and video board.
(1) From the top side of the main body, remove the three
screws Mattaching the DVD mechanism assembly on the
center chassis. (See Fig.12.)
(2) From the forward side of the main board, disconnect the
card wires from the connectors (CN11, CN522, CN523,
CN524, CN531). (See Fig.12.)
Reference:
When reassembling, pass the card wire through the sec-
tion fof the main board before connecting the card wire
to the connector CN11. (See Fig.12.)
(3) Remove the spacer fixing the card wires. (See Fig.12.)
Reference:
After connecting the card wires, fix them with the spacer
as before. (See Fig.12.)
(4) From the inside of the main body, take out the DVD mech-
anism assembly.
(5) Remove the tray fitting from the DVD mechanism assembly
in the direction of the arrow. (See Fig.13.)
Fig.12
Fig.13
DVD mechanism assembly
M
MCenter chassis
Space
r
CN522CN11
CN523
Card
wires
Card wires
Main board
Card wire
f
CN531
CN524
DVD mechanism assembly
Tray fitting

(No.MB282)1-13
3.1.7 Removing the main board
(See Figs.14 and 15)
• Prior to performing the following procedures, remove the metal
cover, tuner, video board and rear panel.
(1) From the right side of the main body, remove the screw N
attaching the earth wires on the reverse side of the main
board. (See Fig.14.)
Reference:
After attaching the earth wires, fix them with a spacer as
before. (See Fig.14.)
(2) Remove the plastic rivet attaching the main board. (See
Fig.14.)
(3) From the inside of the main body, disconnect the card wires
from the connectors (CN11, CN303, CN522, CN523,
CN524, CN860, CN880) on the forward side of the main
board. (See Figs.14 and 15.)
Reference:
When reassembling, pass the card wire through the sec-
tion fof the main board before connecting the card wire
to the connector CN11. (See Figs.14 and 15.)
(4) Disconnect the wire from the connector CN454 on the for-
ward side of the main board. (See Figs.14 and 15.) [UW
version only]
(5) Remove the wire clamp fixing the wires and disconnect the
wires from the connector (CN301, CN302) on the forward
side of the main board. (See Fig.15.)
Reference:
After connecting the wires to the connectors, fix the wires
with the wire clamp as before. (See Fig.15.)
(6) Disconnect the parallel wire from the connectors (CN217,
CN218, CN219) on the main board. (See Fig.15.)
(7) Release the lock gof the connector CN216 on the main
board in the direction of the arrow 1 and disconnect the
main board from the connector CN206 on the speaker ter-
minal board toward this side. (See Fig.14.)
Note:
When releasing the lock gof the connector CN216, take
care not to break the lock. (See Fig.14.)
(8) Release the lock hof the connector CN201 on the primary
board in the direction of the arrow 2 and disconnect the
connector CN211 on the main board from the connector
CN201 in the direction of the arrow 3. (See Fig.14.)
Note:
When releasing the lock hof the connector CN201, take care
not to break the lock. (See Fig.14.)
Fig.14
Fig.15
Main board
CN11 CN522
f
CN880
CN860
Plastic
rivet
CN303
Spacer
Main board
CN201 Primary board
Main
board
Speaker terminal
board
CN206 CN216
hg
Earth wires
3
2
1
CN523
CN216
CN531
CN454
N
CN211
CN524
f
CN531
CN11 CN880
CN860
CN303
CN218
Main boardParallel wires
CN219
Card wire
Card
wires
CN524
CN454
CN522
Wire
CN217 CN301
CN302
Wires
Wire clamp
Main board
CN523

1-14 (No.MB282)
3.1.8 Removing the center chassis assembly
(See Fig.16)
• Prior to performing the following procedures, remove the metal
cover, tuner, video board and rear panel.
(1) From the top side of the main body, disconnect the card
wires from the connectors (CN11, CN522, CN523, CN524)
on the main board.
Reference:
When reassembly, pass the card wire through the sec-
tion fof the main board before connecting the card wire
to the connector CN11.
(2) Disconnect the wire from the connector CN105 on the
speaker terminal board.
(3) Remove the two screws Pattaching the center chassis as-
sembly.
(4) Take out the center chassis assembly from the main body.
Fig.16
3.1.9 Removing the fan
(See Fig.17)
• Prior to performing the following procedure, remove the metal
cover, tuner, video board, rear panel and center chassis as-
sembly.
From the bottom side of the center chassis assembly, remove
the two screws Qattaching the fan.
Fig.17
Main board
Speaker terminal board
CN105
P
Center chassis assembly
Wire
f
CN522 CN11
CN523
Card
wires
Card wires
CN524
CN531
Center chassis assembly
Q
Fan

(No.MB282)1-15
3.1.10 Removing the transformer board
(See Fig.18)
• Prior to performing the following procedure, remove the metal
cover, tuner, video board, rear panel and center chassis as-
sembly.
(1) From the top side of the main body, disconnect the wire
and power cord from the connectors (CN119, CN250) on
the transformer board.
(2) Disconnect the parallel wire from the connector CN101 on
the transformer board.
(3) Remove the four screws Rattaching the transformer board
and take out the transformer board from the main body.
Fig.18
3.1.11 Removing the speaker terminal board
(See Fig.19.)
• Prior to performing the following procedure, remove the metal
cover, tuner, video board, rear panel, main board and center
chassis assembly.
(1) From the top side of the main body, remove the tie band fix-
ing the parallel wire.
Reference:
After connecting the parallel wire, fix it with the new tie
band.
(2) Disconnect the parallel wire from the connector CN106 on
the speaker terminal board.
(3) Release the locks (i, j) of the connectors (CN205, CN214)
and disconnect the speaker terminal board in an upward di-
rection.
Fig.19
CN250
Power
cord
R
CN119
CN101
Parallel Wire
Transformer board
R
R
Speaker terminal board
Speaker terminal board
CN205
CN214
CN106 Tie band
Primary board
Parallel wire
i
j

1-16 (No.MB282)
3.1.12 Removing the regulator & surround amplifier board and main & subwoofer amplifier board
(See Figs.20 and 21)
• Prior to performing the following procedure, remove the metal
cover, tuner, video board, rear panel, main board, center chas-
sis assembly and speaker terminal board.
(1) From the top side of the main body, disconnect the regula-
tor & surround amplifier and main & subwoofer amplifier
boards in an upward direction while releasing the locks (k,
m) of the connectors (CN202, CN203) on the primary
board. (See Fig.20.)
(2) Take out the regulator & surround amplifier and main &
subwoofer amplifier boards at the same time from the main
body.
(3) Remove the two screws Sattaching the leaf spring to the
heat sink.
(4) Remove the two screws Tattaching the regulator & sur-
round amplifier board and remove the regulator & surround
amplifier board from the heat sink. (See Fig.21.)
(5) Remove the four screws Uattaching the main & subwoofer
amplifier board to the heat sink. (See Fig.21.)
Fig.20
Fig.21
Main & subwoofer
amplifier board
Regulator & surround
amplifier board
CN202
CN203
Primary board
k
m
Primary board
Leaf spring
SU
Regulator & surround amplifier board
Main & subwoofer amplifier board
Heat sink
T

(No.MB282)1-17
3.1.13 Removing the primary board
(See Fig.22)
• Prior to performing the following procedure, remove the metal
cover, tuner, video board, rear panel, main board, center chas-
sis assembly, speaker terminal board and regulator & sur-
round amplifier board and main & subwoofer amplifier board.
(1) From the top side of the main body, disconnect the wire
from the connector CN119 on the transformer board.
Reference:
Pass the wire through the slot nof the holder board be-
fore connecting the wire to the connector CN119.
(2) Remove the screw Vattaching the primary board on the
bottom chassis.
(3) Remove the section pof the primary board and take out the
primary board from the main body.
Fig.22
Primary board Bottom chassis
Holde
r
board
CN119 Wire
V
p
n
Transformer board

1-18 (No.MB282)
3.1.14 Removing the FL board
(See Figs.23 and 24)
• Prior to performing the following procedures, remove the metal
cover and front panel assembly.
(1) From the front side of the front panel assembly, pull the vol-
ume knob out of the front panel assembly. (See Fig.23.)
(2) From the inside of the front panel assembly, remove the six
screws Wattaching the FL board. (See Fig.24.)
(3) Release the claws qin the direction of the arrow and take
out the FL board from the front panel assembly. (See
Fig.24.)
3.1.15 Removing the switch board
(See Figs.23 to 25)
• Prior to performing the following procedures, remove the metal
cover and front panel assembly.
(1) From the front side of the front panel assembly, pull the mi-
crophone knob out of the front panel assembly. (See
Fig.23.) [US/UX/UN version only]
(2) From the inside of the front panel assembly, remove the
three screws Xand screw X’ attaching the stay bracket.
(See Fig.24.)
Reference:
When attaching the screw X’, attach the earth wire with
it.
(3) Remove the ten screws Yand screw Y’ attaching the
switch board. (See Fig.25.)
Reference:
When attaching the screw Y’, attach the wire holder with
it.
(4) Take out the switch board from the front panel assembly.
Fig.23
Fig.24
Microphone knob
Volume knob
Front panel assembly
WW
W
X
W
FL board
q
Stay bracketFront panel assembly
X
X'
Earth
wire

(No.MB282)1-19
3.1.16 Removing the cassette mechanism assembly
(See Fig.25)
• Prior to performing the following procedures, remove the metal
cover and front panel assembly.
(1) From the inside of the front panel assembly, remove the
five screws Z, screw Z’ attaching the cassette mechanism
assembly.
(2) Take out the cassette mechanism assembly from the front
panel assembly.
Reference:
• When attaching the screw Y’, attach the earth wire with it.
• When attaching the screws Z, attach the swing cam (L)/(R)
with them.
Fig.25
Y
Z
Z
Front panel assembly
Swing cam (R)
assembly
Earth
wire
Swing cam (L)
assembly
Cassette mechanism
assembly
Y
Switch board
Y'
Z'
Wire
holder

1-20 (No.MB282)
3.2 DVD mechanism section
• Prior to performing the following procedures, remove the DVD mechanism assembly from the main body.
(See “3.1.6 Removing the DVD mechanism assembly”.)
3.2.1 Removing the tray assembly
(See Figs.1 to 3)
(1) From the right side of the DVD mechanism assembly, push
the slide cam and pull the tray assembly out of the DVD
mechanism assembly in the direction of the arrow. (See
Fig.1.)
(2) From the top side of the DVD mechanism assembly, re-
move the two screws Aattaching the leaf spring to the
bushing and remove the leaf spring. (See Fig.2.)
(3) Remove the bushing of the tray assembly from the projec-
tion aon the DVD mechanism assembly and move the tray
assembly in the direction of the arrow. (See Fig.3.)
(4) Remove the claw bof the tray assembly from the DVD
mechanism assembly and take out the tray assembly. (See
Fig.3.)
Fig.1
Fig.2
Fig.3
Tray assembly DVD mechanism assembly
Slide cam
Bushing
Leaf spring
A
DVD mechanism assembly
Bushing
Claw b
Projection a
Tray assembly
DVD mechanism assembly