JVC MX-G950V User manual

1-1
MX-G950V/MX-G880V
MX-G850V/MX-G750V
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.21099
Jul. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Area Suffix
UN----------------------- Asean
US ----------------- Singapore
UX---------------Saudi Arabia
Safety precautions
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method
Contents
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-2
1-3
1-4
1-5
1-28
1-33
1-34
1-34
1-35~56
COMPACT
DIGITAL VIDEO
COMPACT
DIGITAL AUDIO
MX-G950V/MX-G880V
MX-G850V/MX-G750V
MX-G750V
Area Suffix
UN----------------------- Asean
MX-G880V
Area Suffix
U-----------------Other Areas
UN----------------------- Asean
UX---------------Saudi Arabia
MX-G950V/MX-G850V
CA-MXG950V CA-MXG850V
CA-MXG880V CA-MXG750V

1-2
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1. This design of this product contains special hardware and many circuits and components specially for safety
purposes. For continued protection, no changes should be made to the original design unless authorized in
writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services
should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product
should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further
relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily
be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in the Parts List of Service Manual. Electrical
components having such features are identified by shading on the schematics and by ( ) on the Parts List in
the Service Manual. The use of a substitute replacement which does not have the same safety characteristics
as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or
other hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be
separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of
electric shock and fire hazard. When service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been returned to normal, after re-assembling.
5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the product
(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the
product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage
current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return
path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor
between an exposed 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 meausre 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. 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.
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
!
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.
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.
(This regulation does not correspond to J and C version.)

1-3
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Preventing static electricity
1. Grounding to prevent damage by 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.
2. About the earth processing for the destruction prevention by static electricity
In the equipment which uses optical pick-up (laser diode), optical pick-up is destroyed by the static electricity of
the work environment.
Be careful to use proper grounding in the area where repairs are being performed.
2-1 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.
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
3. Handling the optical pickup
1. 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.)
2. 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.
4. 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
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
Attention when traverse unit is decomposed
1. Remove the disk stopper and T. bracket on the CD changer mechanism
assembly.
2. Disconnect the harness from connector on the CD motor board.
3. CD traverse unit is put up as shown in Fig.1.
4. Solder is put up before the card wire is removed from connector CN601
on the CD servo control board as shown in Fig. 2.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
5. Please remove solder after connecting the card wire with CN601 when
you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the CD traverse mechanism.
Soldering
Fig.1
Fig.2
CD changer
mechanism
assembly
CD traverse
unit
Flexible cable

1-4
MX-G950V/MX-G880V
MX-G850V/MX-G750V
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 compact disc 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 herein may result in
hazardous radiation exposure.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
!CAUTION 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

1-5
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Remove the six screws Aon the back of the body.
Remove the two screws Bon both sides of the
body.
Remove the metal cover from the body by lifting the
rear part of the cover.
1.
2.
3.
Disassembly method
<Main body>
Removing the metal cover
(See Fig.1 ~ 3)
Do not break the front panel tab fitted to
the metal cover.
CAUTION: Fig.1
(CA-MXG850VU, CA-MXG950VUX)
Fig.2 Fig.3
A
A
A
Metal cover
Metal cover
B
Metal cover
B
Fig.1
(CA-MXG750VUS)
A
A
A
Metal cover

1-6
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover.
Disconnect the wire from connector CN705 on the
amplifier board.
Remove the plastic rivet attaching the main board to
the front assembly on the right side of the body.
Disconnect the card wire from connector CN661 on
the main board.
Remove the two screws Con the upper side of the
body and the two screws Don the back of the rear
panel.
Pull both the rear panel and the front panel assembly
to the outside, then remove the CD changer
mechanism assembly by lifting the rear part of the
assembly.
1.
2.
3.
4.
5.
Disconnect the card wire from connector CN504 on
the inner side of the main board on the right side of
the body. Remove the CD mechanism assembly.
6.
Removing the CD changer mechanism
assembly (See Fig.4, 6)
To prevent damage to the CD fitting, be
sure to pull both the rear panel and the
front panel assembly enough to remove
the CD changer mechanism assembly.
CAUTION:
At this point, one card wire on the
underside of the CD mechanism
assembly is still connected.
REFERENCE:
Fig.4
Fig.5
Fig.6
(CA-MXG850VU, CA-MXG950VUX)
Front panel assembly
C
C
CD changer
mechanism assembly
Rear panel
Main board
CN661
CN504
CD changer mechanism assembly
D
Main board
CN661
Front panel assembly
Rear panel
CD changer mechanism assembly Front panel assembly
Amplifier board
CN705
CN504
Rear panel
Plastic rivet
Fig.6
(CA-MXG750VUS)
CD changer mechanism assembly
D
Main board
CN661
Front panel assembly
Rear panel
CN504
Plastic rivet

1-7
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover and CD changer mechanism
assembly.
Disconnect the card wires from connector CN870,
CN871 and CN315 on the main board respectively.
Remove the band and disconnect the wire from
connector CN703 on the amplifier board.
Disconnect the wire from connector CN220 on the
transformer board.
Remove the two screws Fon the bottom of the
body.
Release the two joints aon the lower right and left
sides of the body using a screwdriver, and remove
the front panel assembly toward the front.
1.
2.
3.
4.
5.
Removing the front panel assembly
(See Fig.8 ~ 11)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism
assembly.
Turn over the CD changer mechanism assembly and
remove the two screws Eattaching the fan.
1.
Removing the fan (See Fig.7)
Fig.9
Fig.10 Fig.11
F
(Bottom)
Joint a Joint a
Front panel assembly Front panel assembly
Fig.8
Band
Amplifier board
CN703
Main board
CN870
CN871
CN315
Transformer board
CN220
Front panel
assembly
Fig.7
Fan
E
E
CD changer mechanism assembly

1-8
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover.
Disconnect the card wire from connector CN1 on the
tuner board on the right side of the body.
Remove the plastic rivet fixing the tuner board.
Remove the two screws Gon the back of the body.
1.
2.
3.
Removing the tuner board
(See Fig.12)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism
assembly.
Remove the screw Hattaching the rear cover on the
back of the body.
Push each tab of the four joints bin the direction of
the arrow and release.
Remove the sixteen screws Gattaching the rear
panel.
Disengage the joints con each lower side of the rear
panel using a screwdriver and remove the rear panel
backward.
1.
2.
3.
4.
Removing the rear cover / rear panel
(See Fig.13 ~ 16)
Fig.12
Fig.13
(CA-MXG850VU, CA-MXG950VUX)
Fig.14
(CA-MXG850VU, CA-MXG950VUX)
CN1
Plastic rivet
Tuner board
Rear panel
Rear panel
H
G
Joint b
Joint b
Rear cover
Rear panel
G
G
GG
G
G
Fig.13
(CA-MXG750VUS)
Rear panel
H
G
Joint b
Joint b
Rear cover
Fig.14
(CA-MXG750VUS)
Rear panel
G
G
GG
G
Fig.15
Joint c
Rear panel

1-9
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly, the rear panel and the tuner board.
Disconnect the card wires from connector CN870,
CN871 and CN315 on the main board.
Disconnect the wires from connector CN704 and
CN706 on the amplifier board.
Remove the screw I attaching the main board on
the right side of the body.
Disconnect the wire from connector CN710 on the
speaker board.
Disconnect connector CN211 and CN212 on the
main board from the regulator board.
1.
2.
3.
4.
5.
Removing the main board
(See Fig.17 ~ 19)
Fig.17
Fig.19
Fig.18
(CA-MXG850VU, CA-MXG950VUX)
Front panel assembly
Amplifier board
CN704
CN706
Main board
CN870
CN871
CN315
Main board
Front panel assembly
ICN211
CN212
Regulator board
Main board
Speaker board
CN710
Amplifier board
CN704, CN706
Fig.16
(CA-MXG850VU, CA-MXG950VUX)
Joint c Rear panel
Fig.16
(CA-MXG750VUS)
Joint c Rear panel
Fig.18
(CA-MXG750VUS)
Main board
Speaker board
CN710
Amplifier board
CN704, CN706

1-10
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover, the CD changermechanism
assembly and the rear panel.
Remove a band on the power board.
Disconnect the wire from connector CN218, CN219
and CN250 on the power board.
Disconnect connector CN213 on the power board
from the regulator board.
1.
2.
3.
Removing the power board (See Fig.21)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
Disconnect the wire from connector CN710 on the
speaker board.
Disconnect connector CN217 on the speaker board
from the regulator board.
1.
2.
Removing the speaker board
(See Fig.20)
It is not necessary to remove the main
board.
REFERENCE:
Fig.21
CN218
Power board
CN219
Band
CN213
CN250
Fig.20
(CA-MXG850VU, CA-MXG950VUX)
Regulator board CN217
Speaker board
CN701
Fig.20
(CA-MXG750VUS)
Regulator board CN217
Speaker board
CN710

1-11
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
Disconnect the wires from connector CN703, CN704
and CN706 on the amplifier board respectively.
Remove the two band attaching the wire to the
amplifier board and the voltage board.
Disconnect connector CN215 on the amplifier board
and CN216 on the voltage board from the regulator
board (The heat sink will be detached at once).
Remove the four screws Jattaching the amplifier
board to the heat sink.
Remove the two screws K, the board bracket and
the voltage board.
1.
2.
3.
4.
5.
Removing the amplifier board / voltage
board / heat sink (See Fig.22, 23)
It is not necessary to remove the power
board.
REFERENCE:
Fig.22
Fig.23
CA-MXG850VU, CA-MXG950VUX)
Amplifier board
CN704
CN706
CN216
Regulator board CN215
Band
Band
CN703
Voltage board
Amplifier board
Heat sink
Voltage board
Board bracket
J
J
K
Fig.23
(CA-MXG750VUS)
Amplifier board
Heat sink
Voltage board
Board bracket
J
J
K

1-12
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
Disconnect the wires from connector CN218 and
CN219 on the power board.
Disconnect the wire from connector CN204 on the
regulator board.
Disconnect the wire from connector CN220 on the
transformer board.
Remove a band on the voltage board.
Release the wire from the stopper on the regulator
board.
Remove the four screws Lattaching the transformer
assembly.
1.
2.
3.
4.
5.
6.
Removing the power transformer
assembly (See Fig.24, 25)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly, the rear panel, the antenna board, the
main board, the amplifier board, the voltage board,
the power board and the speaker board.
Disconnect the wire from connector CN204 on the
regulator board.
Release the wire from the stopper on the regulator
board.
Remove the two screws M attaching the reglator
board.
1.
2.
3.
Removing the regulator board
(See Fig.26)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
Disconnect the wire from connector CN250 on the
power board.
Remove the band from the power board.
Move the power cord stopper upward and pull out it
from the base chassis.
1.
2.
3.
Removing the power cord (See Fig.27)
Fig.24
Fig.25
Fig.26
Fig.27
CN219
Regulator board
CN204
Transformer board
CN220
Power transformer assembly
Power transformer
assembly Regulator board
CN204
LL
M
M
Power transformer assembly
Power board
CN218
Stopper
Regulator board
CN204
Stopper
Power board
CN250
Power cord stopper
Band
Base chassis
Band

1-13
MX-G950V/MX-G880V
MX-G850V/MX-G750V
<Front panel assembly>
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the front panel assembly.
Disconnect the card wire from connector CN306 on
the head amplifier & mechanism control board.
Remove the seven screws Nattaching the cassette
mechanism assembly.
1.
2.
Removing the cassette mechanism
assembly (See Fig.28)
Remove the four screws Oattaching the stay
bracket.
Disconnect the card wires from connector CN316
and CN880 on the display system control board.
Remove the seven screws P attaching the display
system control board.
If necessary, disconnect the wire from connector
CN911 on the front side of the display system control
board and unsolder FW915.
1.
2.
3.
4.
Removing the display system control
board (See Fig.29 ~ 31)
Remove the three screws Qattaching the CD eject
board.
If necessary, unsolder FW915 on the CD eject
board.
1.
2.
Removing the CD eject board
(See Fig.31, 32)
Fig.28
Head amplifier
& mechanismcontrol board
CN306 N
N
N
N
Cassette mechanism
assembly
Fig.29
Fig.30
Fig.32
Fig.31
O
Display system control board Stay bracket
P
P
P
P
CN316 CN911
CN880
FW915
(Solding) P
Display system control board
FW915
FW915
CD eject board
CN911
Display system control board
CD eject board
FW915
(Solding)
Q
Q

1-14
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the display system control board.
Pull out the preset knob on the front panel.
Remove the four screws Rattaching the preset /
tuning switch board.
If necessary, unsolder FW901 on the preset / tuning
switch board.
1.
2.
3.
Removing the preset / tuning switch
board (See Fig.33, 34)
Prior to performing the following procedure, remove
the display system control board and the preset /
tuning switch board.
Pull out the volume knob on the front panel and
remove the nut. Pull out the sound mode knob, the
mic level knob and the sub woofer level knob toward
the front.
Remove the twelve screws Sattaching the
operation switch board.
Release each tab of the seven joints gretaining the
operation switch board.
1.
2.
3.
Removing the operation switch board
(See Fig.34, 35)
Fig.33
Fig.33
Fig.35
Preset / tuning switch board
R
R
Volume knob Nut
Sub woofer
level knob
Sound mode knob
Preset knob
S
S
S
S
S
S
S
Joint g
Joint g
Joint g
Joint g
Joint g
Operation
switch board
Mic level knob
FW901
(Solding)

1-15
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Disassembly method
Remove the four screws Aon the front of the body
respectively.
Remove the front cover toward the front and
disconnect the yellow and black wires from the two
tweeter speaker terminals.
1.
2.
Removing the front cover (See Fig.1,2)
Do not break or damage the front panel and
body that are glued at the joints a.
(See Fig.1)
CAUTION:
<speaker section>
Fig.1
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Fig.2
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
A
A
Joint a
Tweeter speaker
Front cover
Joint a
Joint a Joint a
Woofer speaker

1-16
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Prior to performing the following procedure, remove
the front cover.
Remove the four screws Bon the front of the body.
Pull out the woofer speaker toward the front and
disconnect the wire (yellow and black,red and black)
from the two speaker terminals.
1.
2.
Removing the woofer speaker (See Fig.3)
Prior to performing the following procedure, remove
the front cover.
Disconnect the red and black wires from the two
tweeter speaker terminals.
Remove the two screws Cattaching the tweeter
speaker on the back of the front cover.
1.
2.
Removing the tweeter speaker
(See Fig.4)
B
B
C
Woofer speaker
Fig.3
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Fig.4
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Tweeter speaker
Front cover

1-17
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Remove the four screws Don the front of the body
respectively.
Remove the front cover toward the front.
1.
2.
Removing the front cover (See Fig.5)
Do not break or damage the front panel and
body that are glued at the joints b.
(See Fig.5)
CAUTION:
Prior to performing the following procedure, remove
the front cover.
Remove the four screws Eon the front of the body.
Pull out the woofer speaker toward the front and
disconnect the red and black wires from the two
speaker terminals.
1.
2.
Removing the woofer speaker (See Fig.6)
<Woofer speaker section>
Fig.5
(SP-MXG850V)
(SP-MXG950V)
Fig.6
(SP-MXG850V)
(SP-MXG950V)
EE
DD
Joint b
Woofer speaker
Front cover
Joint b
Joint b Joint b

1-18
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Remove the four screws Fon the back of the body.
Disconnect the wires from the two terminals on the
rear speaker.
Remove the four screws Gon the back of the front
cover.
1.
2.
3.
<Removing the Rear speaker>
Removing the Rear cover (See Fig.7 ~ 9 )
Fig.8(SP-MXG950V)
Fig.7(SP-MXG950V)
Fig.9(SP-MXG950V)
G
G
F
F
Rear speaker terminals
Rear speaker terminals
Rear speaker
Rear cover
Rear cover
Front cover
Front cover

1-19
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the CD Servo control board
(See Fig.1)
Removing the CD tray assembly
(See Fig.2~4)
1.
2.
3.
4.
5.
6.
7.
8.
9.
Remove the front panel assembly.
Remove the CD changer mechanism assembly.
Remove the CD Servo control board.
Remove the screw B' retaining the lod stopper.
From the T.bracket section "b" and clamper base
section "c" , remove both of the edges fixing the
rod(See Fig.2 and 3).
Remove the screw B retaining the disc stopper
(See Fig.3).
Remove the three screws Cretaining the T.bracket
(See Fig.3).
Remove the screw Dretaining the clamper assembly
(See Fig.3).
From the left side face of the chassis assembly, remove
the one screw Eretaining both of the return spring and
lock lever(See Fig. 4).
By removing the pawl at the section "d" fixing the return
spring, dismount the return spring(See Fig.4).
Remove the three lock levers(See Fig.4).
10.
11.
Fig.1
Fig.2
Fig.3 Fig.4
1.Remove the metal cover.
2.Remove the CD changer mechanism assembly.
3.From bottom side the CD changer mechanism assembly,
remove the four screws Aretaining the CD servo control
board.
4.Absorb the four soldered positions "a" of the right and
left motors with a soldering absorber.
5.Pull out the earth wire on the CD changer mechanism
assembly.
6.Disconnect the connector CN854 on the CD servo
control board.
7.Disconnect the card wire CN601 and the connector
CN801 on the CD servo control board.
CN601
CN801
b
c
E
Rod
T.Braket
Clamper base
T.Braket Disc stopper
Lod stopper
(C/J version only)
Clamper ass'y
b
a
CC
B'
D
C
d
Lock lever
Return spring
CD servo control board
CN651
CN854
a
a
A
A
A
A
CN151
CN652
B
Earth
wire

1-20
MX-G950V/MX-G880V
MX-G850V/MX-G750V
11.
12.
Check whether the lifter unit stopper has been caught
into the hole at the section "e" of CD tray assembly as
shown in Fig.5.
Make sure that the driver unit elevator is positioned as
shown in Fig.6 from to the second or fifth hole on the
left side face of the CD changer mechanism assembly.
Fig.5
Fig.7
Fig.6
Fig.8 Fig.9
[Caution] In case the driver unit elevator is not at above
position, set the elevator to the position as
shown in Fig.7 by manually turning the pulley
gear as shown in Fig.8.
13.
14.
15.
Manually turn the motor pulley in the clockwise
direction until the lifter unit stopper is lowered from the
section "e" of CD tray assembly(See Fig.8).
Pull out all of the three stages of CD tray assembly in
the arrow direction "f" until these stages stop
(See Fig.6).
At the position where the CD tray assembly has
stopped, pull out the CD tray assembly while pressing
the two pawls "g and g' " on the back side of CD tray
assembly(See Fig.9). In this case, it is easy to pull out
the assembly when it is pulled out first from the stage
CD tray assembly.
CD 3
CD 2
CD 1
CD tray
assembly
e
Drive unit of elevator
CD tray assembly
f
Refer to Fig.7 Pawl
Chassis assembly
Pulley gear
Motor pulley
Pawl ,
CD tray assembly
Stopper
g
gg'