U-----------------Other Areas
UN----------------------- Asean
UX---------------Saudi Arabia
Contents
Safety precautions
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method
CA-MXG850V
CA-MXG880V
MX-G880V
Area Suffix
UN----------------------- Asean
1-2
1-3
1-4
1-5
1-28
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
Area Suffix
CA-MXG750V
MX-G750V
Area Suffix
UN----------------------- Asean
US ----------------- Singapore
UX---------------Saudi Arabia
1-33
1-34
1-34
1-35~56
No.21099
Jul. 2002
1-1
Page 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.).
0.15 F AC TYPE
1500 10W
Good earth ground
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
Place this
probe on
each exposed
metal part.
!
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.
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.)
1-2
Page 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.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
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
Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the CD traverse mechanism.
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.
CD changer
mechanism
assembly
CD traverse
unit
Flexible cable
Fig.1
Soldering
Fig.2
1-3
Page 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.
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.
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.
CAUTION
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
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
CLASS 1
LASER PRODUCT
1-4
Page 5
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Disassembly method
<Main body>
Removing the metal cover
(See Fig.1 ~ 3)
1.
Remove the six screws A on the back of the body.
2.
Remove the two screws B on both sides of the
body.
3.
Remove the metal cover from the body by lifting the
rear part of the cover.
CAUTION:
Do not break the front panel tab fitted to
the metal cover.
A
Metal cover
A
(CA-MXG850VU, CA-MXG950VUX)
A
Fig.1
Metal cover
A
Metal cover
B
Fig.2
A
A
Fig.1
(CA-MXG750VUS)
Metal cover
B
Fig.3
1-5
Page 6
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the CD changer mechanism
assembly (See Fig.4, 6)
Prior to performing the following procedure, remove
the metal cover.
1.
Disconnect the wire from connector CN705 on the
amplifier board.
2.
Remove the plastic rivet attaching the main board to
the front assembly on the right side of the body.
3.
Disconnect the card wire from connector CN661 on
the main board.
4.
Remove the two screws C on the upper side of the
body and the two screws D on the back of the rear
panel.
5.
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.
CD changer mechanism assembly
Rear panel
Amplifier board
CN705
Fig.4
Front panel assembly
C
Main board
CN661
Front panel assembly
C
CD changer
mechanism assembly
REFERENCE:
At this point, one card wire on the
underside of the CD mechanism
assembly is still connected.
6.
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.
CAUTION:
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.
CN504
Fig.5
CD changer mechanism assembly
Plastic rivet
Main board
CN661
CN504
Front panel assembly
Fig.6
(CA-MXG850VU, CA-MXG950VUX)
CD changer mechanism assembly
Rear panel
Rear panel
D
Rear panel
1-6
Plastic rivet
Main board
CN661
CN504
Front panel assembly
D
Fig.6
(CA-MXG750VUS)
Page 7
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the fan (See Fig.7)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism
assembly.
1.
Turn over the CD changer mechanism assembly and
remove the two screws E attaching the fan.
Removing the front panel assembly
(See Fig.8 ~ 11)
Prior to performing the following procedure, remove
the metal cover and CD changer mechanism
assembly.
1.
Disconnect the card wires from connector CN870,
CN871 and CN315 on the main board respectively.
Amplifier board
CN703
Fan
E
CD changer mechanism assembly
Fig.7
Band
Main board
CN870
E
CN871
CN315
2.
Remove the band and disconnect the wire from
connector CN703 on the amplifier board.
3.
Disconnect the wire from connector CN220 on the
transformer board.
4.
Remove the two screws F on the bottom of the
body.
5.
Release the two joints a on the lower right and left
sides of the body using a screwdriver, and remove
the front panel assembly toward the front.
Transformer board
CN220
Fig.8
(Bottom)
Fig.9
Front panel
assembly
F
Front panel assembly
Fig.10
Joint a
Joint a
Front panel assembly
Fig.11
1-7
Page 8
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the tuner board
(See Fig.12)
Prior to performing the following procedure, remove
the metal cover.
1.
Disconnect the card wire from connector CN1 on the
tuner board on the right side of the body.
2.
Remove the plastic rivet fixing the tuner board.
3.
Remove the two screws G on the back of the body.
Removing the rear cover / rear panel
(See Fig.13 ~ 16)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism
assembly.
1.
Remove the screw H attaching the rear cover on the
back of the body.
2.
Push each tab of the four joints b in the direction of
the arrow and release.
3.
Remove the sixteen screws G attaching the rear
panel.
4.
Disengage the joints c on each lower side of the rear
panel using a screwdriver and remove the rear panel
backward.
Plastic rivet
G
Joint b
Rear cover
(CA-MXG850VU, CA-MXG950VUX)
G
CN1
Tuner board
Fig.12
H
Fig.13
H
Rear panel
G
Rear panel
Joint b
Rear panel
Rear panel
G
G
G
Fig.14
(CA-MXG850VU, CA-MXG950VUX)
Rear panel
Fig.15
Joint c
G
G
Joint b
Rear cover
G
G
G
Joint b
Fig.13
(CA-MXG750VUS)
Rear panel
G
G
Fig.14
(CA-MXG750VUS)
1-8
Page 9
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Joint c
Rear panel
Fig.16
(CA-MXG850VU, CA-MXG950VUX)
Removing the main board
(See Fig.17 ~ 19)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly, the rear panel and the tuner board.
1.
Disconnect the card wires from connector CN870,
CN871 and CN315 on the main board.
2.
Disconnect the wires from connector CN704 and
CN706 on the amplifier board.
3.
Remove the screw I attaching the main board on
the right side of the body.
4.
Disconnect the wire from connector CN710 on the
speaker board.
CN315
Amplifier board
CN704
CN706
Main board
Joint c
Fig.16
(CA-MXG750VUS)
Main board
CN870
CN871
Fig.17
Rear panel
Front panel assembly
Amplifier board
CN704, CN706
5.
Disconnect connector CN211 and CN212 on the
main board from the regulator board.
Front panel assembly
Main board
Regulator board
I
CN212
CN211
Fig.19
Speaker board
CN710
Fig.18
(CA-MXG850VU, CA-MXG950VUX)
Amplifier board
CN704, CN706
Main board
Speaker board
CN710
Fig.18
(CA-MXG750VUS)
1-9
Page 10
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the speaker board
(See Fig.20)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
REFERENCE:
1.
Disconnect the wire from connector CN710 on the
speaker board.
2.
Disconnect connector CN217 on the speaker board
from the regulator board.
It is not necessary to remove the main
board.
Speaker board
CN701
Regulator board
CN217
Fig.20
(CA-MXG850VU, CA-MXG950VUX)
Speaker board
CN710
Removing the power board (See Fig.21)
Prior to performing the following procedure, remove
the metal cover, the CD changermechanism
assembly and the rear panel.
1.
Remove a band on the power board.
2.
Disconnect the wire from connector CN218, CN219
and CN250 on the power board.
3.
Disconnect connector CN213 on the power board
from the regulator board.
Regulator board
Power board
CN219
CN250
CN213
Fig.20
CN217
(CA-MXG750VUS)
CN218
Band
Fig.21
1-10
Page 11
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the amplifier board / voltage
board / heat sink (See Fig.22, 23)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
1.
Disconnect the wires from connector CN703, CN704
and CN706 on the amplifier board respectively.
2.
Remove the two band attaching the wire to the
amplifier board and the voltage board.
3.
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).
4.
Remove the four screws J attaching the amplifier
board to the heat sink.
5.
Remove the two screws K, the board bracket and
the voltage board.
REFERENCE:
It is not necessary to remove the power
board.
Voltage board
Regulator board
Heat sink
Voltage board
Amplifier board
CN704
CN706
Band
CN216
Fig.22
Band
CN703
CN215
Amplifier board
J
K
CA-MXG850VU, CA-MXG950VUX)
Heat sink
Voltage board
J
Board bracket
Fig.23
Amplifier board
J
J
K
Board bracket
Fig.23
(CA-MXG750VUS)
1-11
Page 12
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the power transformer
assembly (See Fig.24, 25)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
1.
Disconnect the wires from connector CN218 and
CN219 on the power board.
2.
Disconnect the wire from connector CN204 on the
regulator board.
3.
Disconnect the wire from connector CN220 on the
transformer board.
4.
Remove a band on the voltage board.
5.
Release the wire from the stopper on the regulator
board.
6.
Remove the four screws L attaching the transformer
assembly.
Power board
CN219
CN218
Band
L
Transformer board
CN220
Power transformer assembly
Fig.24
Stopper
Regulator board
CN204
L
Removing the regulator board
(See Fig.26)
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.
1.
Disconnect the wire from connector CN204 on the
regulator board.
2.
Release the wire from the stopper on the regulator
board.
3.
Remove the two screws M attaching the reglator
board.
Removing the power cord (See Fig.27)
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly and the rear panel.
1.
Disconnect the wire from connector CN250 on the
power board.
Power transformer
assembly
M
Power transformer assembly
Power board
CN250
Power cord stopper
Fig.25
Fig.26
Regulator board
CN204
Stopper
M
Regulator board
CN204
2.
Remove the band from the power board.
3.
Move the power cord stopper upward and pull out it
from the base chassis.
1-12
Base chassis
Band
Fig.27
Page 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.
Removing the cassette mechanism
assembly (See Fig.28)
1.
Disconnect the card wire from connector CN306 on
the head amplifier & mechanism control board.
2.
Remove the seven screws N attaching the cassette
mechanism assembly.
Removing the display system control
board (See Fig.29 ~ 31)
1.
Remove the four screws O attaching the stay
bracket.
2.
Disconnect the card wires from connector CN316
and CN880 on the display system control board.
Head amplifier
& mechanismcontrol board
CN306
N
Cassette mechanism
assembly
N
N
N
Fig.28
O
3.
Remove the seven screws P attaching the display
system control board.
4.
If necessary, disconnect the wire from connector
CN911 on the front side of the display system control
board and unsolder FW915.
Removing the CD eject board
(See Fig.31, 32)
1.
Remove the three screws Q attaching the CD eject
board.
2.
If necessary, unsolder FW915 on the CD eject
board.
CD eject board
CN911
FW915
FW915
Display system control board
CN316
P
FW915
(Solding)
P
CN880
CD eject board
FW915
(Solding)
Q
P
Q
Stay bracket
Fig.29
CN911
P
P
Display system control board
Fig.30
Display system control board
Fig.31
Fig.32
1-13
Page 14
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the preset / tuning switch
board (See Fig.33, 34)
Prior to performing the following procedure, remove
the display system control board.
1.
Pull out the preset knob on the front panel.
2.
Remove the four screws R attaching the preset /
tuning switch board.
3.
If necessary, unsolder FW901 on the preset / tuning
switch board.
Removing the operation switch board
(See Fig.34, 35)
Prior to performing the following procedure, remove
the display system control board and the preset /
tuning switch board.
1.
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.
R
Preset / tuning switch board
FW901
(Solding)
Preset knob
R
Fig.33
Sound mode knob
Sub woofer
level knob
2.
Remove the twelve screws S attaching the
operation switch board.
3.
Release each tab of the seven joints g retaining the
operation switch board.
Joint g
Joint g
S
S
Volume knob
Joint g
Mic level knob
Nut
Fig.33
S
Operation
switch board
1-14
S
Joint g
S
Fig.35
S
S
Joint g
Page 15
Disassembly method
MX-G950V/MX-G880V
MX-G850V/MX-G750V
<speaker section>
Removing the front cover (See Fig.1,2)
CAUTION:
1.
Remove the four screws A on the front of the body
respectively.
2.
Remove the front cover toward the front and
disconnect the yellow and black wires from the two
tweeter speaker terminals.
Do not break or damage the front panel and
body that are glued at the joints a.
(See Fig.1)
A
Joint a
Joint aJoint a
Front cover
Joint a
A
Fig.1
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Tweeter speaker
Woofer speaker
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Fig.2
1-15
Page 16
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the woofer speaker (See Fig.3)
Prior to performing the following procedure, remove
the front cover.
1.
Remove the four screws B on the front of the body.
2.
Pull out the woofer speaker toward the front and
disconnect the wire (yellow and black,red and black)
from the two speaker terminals.
B
B
Removing the tweeter speaker
(See Fig.4)
Prior to performing the following procedure, remove
the front cover.
1.
Disconnect the red and black wires from the two
tweeter speaker terminals.
2.
Remove the two screws C attaching the tweeter
speaker on the back of the front cover.
Woofer speaker
Fig.3
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
C
Tweeter speaker
1-16
Front cover
Fig.4
(SP-MXG750V)
(SP-MXG850V)
(SP-MXG950V)
Page 17
<Woofer speaker section>
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the front cover (See Fig.5)
CAUTION:
1.
Remove the four screws D on the front of the body
respectively.
2.
Remove the front cover toward the front.
Do not break or damage the front panel and
body that are glued at the joints b.
(See Fig.5)
Joint b
Joint bJoint b
Front cover
Joint b
DD
Removing the woofer speaker (See Fig.6)
Prior to performing the following procedure, remove
the front cover.
1.
Remove the four screws E on the front of the body.
2.
Pull out the woofer speaker toward the front and
disconnect the red and black wires from the two
speaker terminals.
Fig.5
(SP-MXG850V)
(SP-MXG950V)
Woofer speaker
EE
Fig.6
(SP-MXG850V)
(SP-MXG950V)
1-17
Page 18
MX-G950V/MX-G880V
MX-G850V/MX-G750V
<Removing the Rear speaker>
Removing the Rear cover (See Fig.7 ~ 9 )
1.
Remove the four screws F on the back of the body.
2.
Disconnect the wires from the two terminals on the
rear speaker.
3.
Remove the four screws G on the back of the front
cover.
F
Rear cover
F
Fig.7(SP-MXG950V)
Rear cover
Front cover
Rear speaker
Fig.8(SP-MXG950V)
terminals
Rear speaker
Front cover
1-18
G
Rear speaker
Fig.9(SP-MXG950V)
terminals
G
Page 19
Removing the CD Servo control board
(See Fig.1)
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 A retaining 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.
MX-G950V/MX-G880V
MX-G850V/MX-G750V
A
a
a
CN854
A
CN651
CD servo control board
CN652
CN801
CN601
CN151
Removing the CD tray assembly
(See Fig.2~4)
Remove the front panel assembly.
1.
Remove the CD changer mechanism assembly.
2.
Remove the CD Servo control board.
3.
Remove the screw B' retaining the lod stopper.
4.
From the T.bracket section "b" and clamper base
5.
section "c" , remove both of the edges fixing the
rod(See Fig.2 and 3).
Remove the screw B retaining the disc stopper
6.
(See Fig.3).
Remove the three screws C retaining the T.bracket
7.
(See Fig.3).
Remove the screw D retaining the clamper assembly
8.
(See Fig.3).
From the left side face of the chassis assembly, remove
9.
the one screw E retaining both of the return spring and
lock lever(See Fig. 4).
10.
By removing the pawl at the section "d" fixing the return
spring, dismount the return spring(See Fig.4).
11.
Remove the three lock levers(See Fig.4).
T.Braket
Disc stopper
B
Earth
wire
Fig.1
A
Clamper base
A
b
Rod
c
T.Braket
Fig.2
d
CC
B'
a
Lod stopper
(C/J version only)
C
D
b
Lock lever
Clamper ass'y
Fig.3
Fig.4
Return spring
E
1-19
Page 20
MX-G950V/MX-G880V
MX-G850V/MX-G750V
11.
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
12.
shown in Fig.6 from to the second or fifth hole on the
left side face of the CD changer mechanism assembly.
[Caution]
13.
14.
15.
Chassis assembly
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.
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.
Stopper
e
CD tray
assembly
Fig.5
Refer to Fig.7
Pulley gear
Pawl
Fig.6
CD tray assembly
g
CD
CD
CD
f
Drive unit of elevator
Fig.7
3
2
1
CD tray assembly
1-20
Motor pulley
Fig.8
Pawl ,
g
Fig.9
g'
Page 21
Removing the CD loading mechanism
assembly(See Fig.10)
1.2.While turning the cams R1 and R2 assembly in the
arrow direction "h" ,align the shaft "i" of the CD loading
mechanism assembly to the position shown in Fig.10.
Remove the four screws F retaining the CD loading
mechanism assembly.
Removing the CD traverse mechanism
(See Fig.11 and 12 )
For dismounting only the CD traverse mechanism
1.
without removing the CD loading mechanism assembly,
align the shaft "j" of the CD loading mechanism
assembly to the position shown Fig.11 while turning the
cam R1 and R2 assembly in the arrow direction "k" .
By raising the CD loading mechanism assembly in the
2.
arrow direction "l", remove the assembly from the lifter
unit
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Cams R1, R2 assembly
Arrow
h
i
F
F
Cam R1, R2 assembly
j
Fig.11
Arrow
F
CD loading mechanism assembly
F
Fig.10
CD traverse mechanism
k
Lifter unit
Fig.12
CD Pickup unit
Arrow
l
Removing the CD pick unit
(See Fig.13 )
1.
Move the cam gear in the arrow direction "m" . Then,
the CD pickup unit will be moved in the arrow direction
"n" .
According to the above step, shift the CD pickup unit to
2.
the center position.
While pressing the stopper retaining the shaft in the
3.
arrow direction "o" , pull out the shaft in the arrow
direction "p".
After dismounting the shaft from the CD pickup unit,
4.
remove the CD pickup unit
o
Shaft
Stopper
p
Fig.13
Shaft
n
m
Stopper
CD loading
mechanism
Shaft
Cam gear
1-21
Page 22
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the try select switch board
(See Fig.14)
1.2.Remove the two screws G retaining the tray select
switch board.
Disconnect the tray select switch board from connector
CN804 on the CD servo control board.
Removing the cam unit
(See Fig.15 ~17 )
1.
Remove the CD loading mechanism assembly.
2.
While turning the cam gear "q", align the Paul "r"
position of the drive unit to the notch position(Fig.16) on
the cam gear "q".
Pull out the drive unit and cylinder gear(See Fig.17).
3.
While turning the cam gear "q", align the Paul "s"
4.
position of the select lever to the notch position(Fig.18)
on the cam gear "q".
Remove the four screws H retaining the cam unit(cam
5.
gear "q" and cams R1/R2 assembly)(See Fig.18).
Chassis assembly
Drive unit
CN851
CN854
Fig.14
Cam gear
Tray select
switch board
CN804
q
G
Drive unit
Cylinder gear
r
Cam gear
H
s
Fig.15
H
q
Cams R1, R2 assembly
Cam unit
J
1-22
Fig.16
Select lever
Fig.17
Page 23
MX-G950V/MX-G880V
Fig.18
Fig.20
Fig.19
Fig.21
[Note]
When the chassis assembly is turned over under
the conditions wherein the gear bracket and belt
have been removed, then the pulley gear as well
as the gear, etc. constituting the gear unit can
possibly be separated to pieces. In such a case,
assemble these parts by referring to the assembly
and configuration diagram in Fig. 21.
Removing the actuator motor and belt
(See Fig.18~21)
1.
2.
3.
4.
5.
Remove the two screws I retaining the gear bracket
(See Fig.18).
While pressing the pawl "t" fixing the gear bracket in the
arrow direction, remove the gear bracket
(See Fig.18).
From the notch "u section" on the chassis assembly
fixing the edge of gear bracket, remove and take out the
gear bracket(See Fig. 19).
Remove the belts respectively from the right and left
actuator motor pulleys and pulley gears(See Fig. 18).
After turning over the chassis assembly, remove the
actuator motor while spreading the four pawls "v" fixing
the right and left actuator motors in the arrow
direction(See Fig. 20).
Pulley gear
Belt
Motor pulley
Belt
Pulley gear
Motor pulley
Gear bracket
t
I
I
Pawl
v
Actuator motor
v
Chassis assembly
u
Gear bracket
Pulley gear
Gear B
Cylinder gear
Gross gear U
Gear C
Gross gear L
Select gear
Gear B
Gear C
Pulley gear
Assembly and Configuration Diagram
MX-G850V/MX-G750V
1-23
Page 24
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the cams R1/R2 assembly
and cam gear q(See Fig.22)
1.
Remove the slit washer fixing the cams R1 and R2
assembly.
2.
By removing the two pawls "w" fixing the cam R1,
separate R2 from R1.
Remove the slit washer fixing the cam gear "q".
3.
Pull out the cam gear "q" from the C.G. base assembly.
4.
Removing the C.G. base assembly
(See Fig.22 and 23)
Remove the three screws J retaining the C.G. base
assembly.
[Caution]
To reassemble the cylinder gear, etc.with the
cam unit (cam gear and cans R1/R2 assembly),
gear unit and drive unit, align the position of the
pawl "x" on the drive unit to that of the notch on
the cam gear "q". Then, make sure that the
gear unit is engaged by turning the cam gear
"q" (See Fig. 24).
Slit washer
Cam gear q
J
Slit washer
Cam R2
Pawl
w
Cam R1
Cam switch board
C.G. base assembly
Pawl
w
Notch
Pawl
x
Cylinder
gear
Drive unit
Fig.22
Cam gear q
Cam R1, R2 assembly
Gear unit
Gear bracket
Fig.23
1-24
Page 25
MX-G950V/MX-G880V
MX-G850V/MX-G750V
< Cassette mechanism section >
Removing the playback,recording and eraser
heads (See Fig.1~3)
1. While shifting the trigger arms seen on the right
side of the head mount in the arrow direction,turn
the flywheel R in counterclockwise direction until
the head mount has gone out with a click
(See Fig. 1).
2. When the flywheel R is rotated in counterclockwise
direction, the playback / recording & eraser head will
be turned in counterclockwise direction from the
position in Fig.2 to that in Fig.3.
3. At this position, disconnect the flexible P.C.board
(outgoing from the playback head) from the
connector CN301 on the head amp. and mechanism
control P.C. board.
4. Remove the flexible P.C.board from the chassis
base.
5. Remove the spring "a" from behind the playback /
recording head.
6. Loosen the reversing azimuth screw retaining the
playback head.
7. Take out the playback head from the front of the
head mount.
8. The recording and eraser heads should also be
removed similarly according to Steps 1~7 above.
Flexible
P.C.board
Cassette mechanism
Trigger armHead mount
Fig.1
Playback/Recording &
eraser head
(Mechanism A side)
Flywheel R
Spring "a"
Trigger arm
Reassembling the playback, recording
and eraser heads (See Fig.3)
1. Reassemble the playback head from the front of
the head mount to the position as shown in Fig.3.
2. Fix the reversing azimuth screw.
3. Set the spring a from behind the playback head.
4. Attach the flexible P.C.board to the chassis base
as shown in Fig.3.
5. The recording and eraser heads should also be
reassembled similarly according to Steps 1~4
above.
CN301
Head amplifier & mechanism
control P.C. board
Fig.2
Playback head
Spring "a"
CN302
FPC holder
Fig.3
Flywheel R
(Mechanism A side)
Reversing azimuth
screw
Head
mount
Flexible
P.C.board
Head amplifier &
mechanism control
P.C. board
(Mechanism B side)
1-25
Page 26
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the head amp. and mechanism
control board (See Fig. 4)
1.Remove the cassette mechanism assembly.
2.After turning over the cassette mechanism
assembly,remove the five screws "A" retaining
the head amplifier & mechanism control board.
3.Disconnect the connectors CN303 on the board
and the connectors CN301 and on CN302 both
the right and left side reel pulse boards.
4.When necessary, remove the 4pin parallel
wire soldered to the main motor
Removing the capstan motor assembly
(See Fig.5 to 7)
1.Remove the six screws "B" retaining capstan
motor assembly (See Fig. 5).
2.While raising the capstan motor, remove the
capstan belts A and B respectively from the
motor pulley (See Fig. 6).
Caution 1: Be sure to handle the capstan
belts so carefully that these belts
will not be stained by grease and
other foreign matter. Moreover,
these belts should be hand while
referring to the capstan belt
hanging method.(See Fig.6 and 7)
A
Flexible
board
Head amplifier &
mechanism control board
AA
CN303
CN302CN301
Flexible
board
Fig.4
BB
Capstan motor
assembly
AA
1-26
Capstan
belt A
Fig.5
Capstan motor
Capstan
belt A
Capstan
belt B
Motor pulley
Fig.7Fig.6
BBBB
Capstan
belt B
Page 27
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Removing the capstan motor (See Fig. 8)
From the joint bracket, remove the two screws "C"
retaining the capstan motor.
Removing the flywheel (See Fig. 9,10)
1.Remove the head amp. and mechanism control
P.C.Board.
2.Remove the capstan motor assembly.
3.After turning over the cassette mechanism, remove
the two slit washers "b" fixing the capstan shafts
R and L, and pull out the flywheels R and L respectively
from behind the cassette mechanism.
C
Capstan motor
Joint
bracket
C
Fig.8
Flywheel RFlywheel L
Flywheel RFlywheel L
Fig.10
Removing the reel pulse board and solenoid
(See Fig. 11)
1.Remove the five pawls (c,d,e,f,g) retaining
the reel pulse P.C.Board.
2.From the surface of the reel pulse P.C.Board parts,
remove the two pawls "h" and "i" retaining the solenoid.
hi
Solenoid
c
a
d
Slit
washer "a"
Fig.9
e
f
b
Slit
washer "b"
Reel pulse board
g
Solenoid
Fig.11
1-27
Page 28
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Adjustment method
Measurement instruments required
for adjustment
1. Low frequency oscillator,
This oscillator should have a capacity to output 0dBs
to 600ohm at an oscillation frequency of 50Hz-20kHz.
2. Attenuator impedance : 600ohm
3. Electronic voltmeter
4. Frequency counter
5. Wow flutter meter
6. Test tape
VT712 : For Tape speed and wow flutter ( 3kHz)
VT710 : Head azimuth
VT724 : For Reference level (1kHz)
7. Blank tape
TAPE : AC-225
8. Torque gauge : For play and back tension
Forward ; TW2111A, Reverse ; TW2121A
Fast Forward and Rewind ; TW2231A
9. Test disc
: CTS-1000(12cm),GRG-1211(8cm)
10. Jitter meter
Radio input signal
AM modulation frequency : 400Hz
Modulation factor : 30%
FM modulation frequency : 400Hz
Frequency displacement : 22.5kHz
Frequency Range
AM531kHz~1710kHz
FM87.5MHz~108MHz
Standard measurement positions of volume
and switch
Power : Standby (Light STANDBY Indicator)
Sub woofer VOL. : Minimum
Sound mode : OFF
Main VOL. : 0 Minimum
Traverse mecha set position : Disc 1
Mic MIX VOL : MAX
ECHO : OFF
Measurement conditions
Power supply voltage
AC110V/127V/220V/230V 240V , adjustable
Measurement
output terminal : Speaker out
: TP101(Mesuring for TUNER/DECK/CD)
: Dummy load 6ohm
Precautions for measurement
1. Apply 30pF and 33kohm to the IF sweeper output
side and 0.082 F and 100kohm in series to
the sweeper input side.
2. The IF sweeper output level should be made as
low as possible within the adjustable range.
3. Since the IF sweeper is a fixed device, there is
no need to adjust this sweeper.
4. Since a ceramic oscillator is used, there is no need
to perform any MPX adjustment.
5. Since a fixed coil is used, there is no need to adjust
the FM tracking.
6. The input and output earth systems are separated.
In case of simultaneously measuring the voltage
in both of the input and output systems with an
electronic voltmeter for two channels, therefore,
the earth should be connected particularly.
7. In the case of BTL connection amplifier, the minus
terminal of speaker is not for earthing. Therefore,
be sure not to connect any other earth terminal
to this terminal. This system is of an OTL system.
1-28
Page 29
Arrangement of adjusting positions
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Cassette mechanism section (Mechanism A section)
Head azimuth
adjusting screw
(Forward side)
Playback
head
Head azimuth
adjusting screw
(Reverse side)
Cassette mechanism section (Back side)
Head azimuth
adjusting screw
(Forward side)
Playback, recording and eraser
heads or playback head
Head azimuth
adjusting screw
(Reverse side)
Cassette Mechanism Unit Section
Tape speed ADJ
Bias ADJ L
Bias ADJ R
1-29
Page 30
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Tape recorder section
ItemsMeasurement
Confirmation
of head angle
Confirmation
of tape speed
conditions
Test tape
:VT710 (10kHz)
Measurement
output terminal
:Speaker terminal
Speaker R
(Load resistor:6 )
:Headphone terminal
Test tape
:VT712 (3kHz) or
TMT7036 (3kHz)
Measurement
output terminal
:Headphone terminal
1.Playback the test tape VT710 (10kHz).
2.With the playback mechanism or recording &
playback mechanism, adjust the head azimuth
screw so that the forward and reverse output
levels become maximum.After adjustment,lock
the head azimuth at least by half a turn.
3.In either case,this adjustment should be
performed in both the forward and reverse
directions with the head azimuth screw.
<Constant speed>
Adjust VR301 so that the frequency counter reading
becomes 3,000Hz 60Hz when playing back the
test tape VT712 (3kHz)with the playback mechanism
or playback and recording mechanism after ending
forward winding of the tape.
Reference values for confirmation items
ItemsMeasurement
Double tape
speed
conditions
Test tape
:VT712 (3kHz)
Measurement
output terminal
:Speaker terminal
Speaker R
(Load resistance:6 )
measurement
output terminal
:Headphone terminal
After setting to the double speed motor, confirm
that the frequency counter reading becomes
4,800+400/-300Hz when the test tape VT712
(3kHz) has been play back with the playback
mechanism.
Measurement method
Measurement method
Standard
values
Maximum
output
Tape speed
of decks
(A and B)
:3,000Hz
60Hz
Standard
values
4,800+400/
-300Hz
Adjusting
positions
Adjust the head
azimuth screw
only when the
head has been
changed.
VR301
Adjusting
positions
Playback
mechanism side
Difference
between the
forward and
reverse speed.
P.mecha and
R/P mecha
speed
Wow & flutter
1-30
Test tape
:VT712 (3kHz)
Measurement
output terminal
:Headphone terminal
When the test tape VT712 (3kHz) has been played
back with the playback mechanism or recording and
playback mechanism at the beginning of forward
winding, the frequency counter reading of the
difference between both of the mechanisms should
be 6.0Hz or less.
When the test tape VT712 (3kHz) has been played
back with the playback mechanism or recording and
playback mechanism at the beginning of forward
winding the frequency counter reading of wow &
flutter should be 0.25% or less(WRMS).
60Hz or
less
with in
0.25%
JIS(WTD)
Both the playback
and recording &
playback
mechanism
Both the playback
and recording &
playback
mechanism
Page 31
ItemsMeasurement
conditions
Measurement method
Standard
values
Adjusting
positions
1.With the recording and playback mechanism,
load the test tapes(AC-225 to TYP ),and set the
mechanism to the recording and
pausing conditions in advance.
2.After connecting 100 in series to the recorder
head,measure the bias current with a valve
voltmeter at both of the terminals.
3.After resetting the [PAUSE] mode,start recording.
At this time,adjust VR101 for LcH and VR201 for
RcH so that the recording bias current values
become 4.0 A (TYP ).
1.With the recording and playback mechanism,load
the test tape(AC-225 to TYP ),and set the
mechanism to the recording and pausing condition
in advance.
2.While repetitively inputting the reference frequency
signal of 1kHz and 10kHz from OSC IN, record and
playback the test tape.
3.While recording and playing back the test tape in
TYP ,adjust VR101 for LcH and VR201 for RcH
so that the output deviation between 1kHz and
10kHz becomes -1dB 2dB.
Adjustment of
recording bias
current
(Reference
value)
Adjustment of
recording and
playback
frequency
characteristics
*Mode : Forward or
reverse mode
*Recording mode
*Test tape
: AC-225
Measurement output
terminal
:Both recording and
headphone terminals
Reference frequency
:1kHz and 10kHz
(REF:-20dB)
Test tape
:TYP AC-225
Measurement input
terminal
:OSC IN
AC-225
:4.20 A
Output
deviation
between
1kHz and
10kH
:-1dB 2dB
LcH
:VR101
RcH
:VR201
LcH
:VR101
RcH
:VR201
Electrical performance
ItemsMeasurement
conditions
Measurement method
Standard
values
Adjusting
positions
1.While changing over to and from BIAS 1 and 2,
confirm that the frequency is changed.
2.With the recording and playback mechanism.
load the test tape (AC-225 to TYP ),and set the
mechanism to the recording and pausing
conditions in advance.
3.Confirm that the BIAS TP frequency on the
P.C.board is 100kHz 6kHz.
1.With the recording and playback mechanism,
load the test tapes(AC-225 to TYP ),and set the
mechanism to the recording and pausing condition
in advance.
2.After setting to the recording conditions,connect
1M in series to the eraser head on the recording
and playback mechanism side,and measure the
eraser current from both of the eraser terminal.
Recording
bias frequency
Eraser current
(Reference
value)
*Recording and
playback side forward
or reverse
*Test tape
:TYP AC-225
*Measurement
terminal BIAS TP on
P.C.board
*Recording and
playback side forward
or reverse
*Recording mode
*Test tape
:AC-225
Measurement terminal
Both of the eraser
head
100kHz
+9kHz
-7kHz
TYP
:75mA
Reference values for electrical function confirmation items
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1-31
Page 32
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Extension code connecting method
CD changer mechanism
assembly
CD servo board
CN651
CN661
VCD board
CN102
CN504
Main board
1-32
Page 33
Flow of functional operation until TOC read
Power ON
Play Key
Slider turns REST
SW ON.
Automatic tuning
of TE offset
Confirm that the voltage at the pin5
of CN801 is "H"\"L"\"H".
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Check Point
Tracking error waveform at TOC reading
Approx.3sec
Tracking
servo
off states
Automatic measurement
of TE amplitude and
automatic tuning of
TE balance
VREF
pin 25 of
IC601(TE)
Approx
1.8V
Disc states
to rotate
Tracking
servo
on states
Disc to be
braked to stop
TOC reading
finishes
500mv/div
2ms/div
Fig.1
Laser ON
Detection of disc
Automatic tuning of
Focus offset
Automatic measurement of
Focus S-curve amplitude
Disc is rotated
Focus servo ON
(Tracking servo ON)
Automatic measurement of
Tracking error amplitude
Automatic tuning of
Tracking error balance
Check that the voltage at the
pin40 of IC651 is + 5V?
Confirm that the Focus error
S-cuve signal at the pin28 of
IC651 is approx.2Vp-p
Confirm that the signal from
pin24 IC651 is 0V as a
accelerated pulse during
approx.400ms.
Confirm the waveform of
the Tracking error signal.
at the pin 25 of IC601 (R604)
(See fig-1)
Automatic tuning of
Focus error balance
Automatic tuning of
Focus error gain
Automatic tuning of
Tracking error gain
TOC reading
Play a disc
Confirm the eys-pattern
at the lead of TP1
1-33
Page 34
MX-G950V/MX-G880V
MX-G850V/MX-G750V
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.
1. The level of RF output (EFM output : ampli
tude of eye pattern) will below.
Is the level of
RFOUT under
1.25V 0.22Vp-p?
YES
O.K
NO
Replace it.
Replacement of laser pickup
Turn off the power switch and, disconnect the
power cord from the ac outlet.
Replace the pickup with a normal one.(Refer
to "Pickup Removal" on the previous page)
Plug the power cord in, and turn the power on.
At this time, check that the laser emits for
about 3seconds and the objective lens moves
up and down.
Note: Do not observe the laser beam directly.
Play a disc.
Check the eye-pattern at TP1.
Finish.
(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.
Function
Decoupling condenser connection terminal.
Decoupling condenser connection terminal.
Reference resistance connection terminal.
Non connect.
Non connect.
Non connect.
Connected to GND of audio system through a condenser.
Inputs the audio signal through a condenser.
Power supply terminal.
Output selection control terminal.
Output selection control terminal.
Output selection control terminal.
Output selection control terminal.
Non connect.
Non connect.
Connected to GND upon normal use.
Multi-plexor output terminal.
Connect to GND.
Pins SEL_PLL[1.0] select the PLL clock frequency for the DCLK output.
SEL_PLL1
0
0
1
1
O
Reset output(active-low).
No connect.Do not connect to these pins.
O
Dual-purpose pin. RSD is the receive audio data input.
I
SEL_PLL0 along with SEL_PLL1 select the PLL clock frequency for the
DCLK output.See the table for pin number 23.
O
Dual-purpose pin.RBCK is the receive audio bit clock.
I
SER_IN is the serial input DSC mode.
0-Parallel DSC mode.
1-Serial DSC mode.
I
Audio Analog Ground.
I
ADC Common Mode Reference(CMR) buffer output.CMR is approximately
2.25V.Bypass to analog ground with 47 F electrolytic in parallel with 0.1 F.
I
DAC and ADC maximum reference.
Bypass to VCMR with 10 F in parallel with 0.1 F.
I
Analog VCC, 5V.
O
Right channel output.
O
Left channel input.
I
Microphone input 1.
I
Microphone 2.
I
Internal resistor divider generates Common Mode Reference(CMR) voltage.
Bypass to analog ground with 0.1 F.
I
DAC and ADC minimum reference.
Bypass to VCMR with 10 F in parallel with 0.1 F.
I
Full scale DAC current adjustment.
I
Compensation pin.
I
Video Analog Ground
O
Modulates chrominance output.
I
Video VCC, 5V
O
Y Iuminance data bus for screen video port.
O
Composite video output.
I
Audio CAP.
O
Crystal output.
I
27 MHz crystal input.
I/O
13.5 MHz pixel clock.
I/O
27 MHz(2 times pixel clock).
O
Horizontal sync(active-low).
O
Vertical sunc(active-low).
I
YUV data bus for screen video port.
SEL_PLL0
0
0
0
1
DCLK
Bypass PLL(input mode)
27 MHz(output mode)
32.4 MHz(output mode)
40.5 MHz(output mode)
ES3883F(2/2)
1-39
Page 40
MX-G950V/MX-G880V
MX-G850V/MX-G750V
BA3837 (IC466) : MIC mixer
1.Block diagram
C
16
B
15
14
A
ROUT
13
LP
12
LP
11
LP
10
RIN
9
1
VCC
2.Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
LOGIC
+
-
2
MIC
Symbol
VCC
MIC IN
LOUT
FK
TK
LIN
BIAS
GND
RIN
LPF1
LPF2
LPF3
ROUT
CONTA
CONTB
CONTC
-
+
3
LOUT
+
-
SW2SW1
4
FK
I/O
-
O
-
-
-
O
O
O
O
Power supply
Microphone mixing input
I
Channel L output
Non connect
Non connect
Channel L input
I
Signal bias
I
Connect to GND
Channel R input
I
Connects to LPF time constant element
Connects to LPF time constant element
LPF outpout
Channel R output
Mode select input A
I
Mode select input B
I
Mode select input C
I
TK
-
+
-
+
R
L-R
L+R
-
+
+
L
+
-
5
6
LIN
7
BIAS
8
GND
Description
1-40
Page 41
BU2092 (IC642) : Port expander
1.Terminal Layout
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Vss
DATA
CLOCK
LCK
Q0
Q1
Q2
Q3
Q4
1
2
3
4
5
6
7
8
9
CONTROL
CIRCUIT
12BIT SHIFT RESISTER
12BIT STRAGE RESISTER
OUTPUT BUFFER(OPEN DRAIN)
17
16
15
14
13
12
11
10
18
Vdd
OE
Q11
Q10
Q9
Q8
Q7
Q6
Q5
2.Pin Function
Pin No.
1
2
3
4
5~16
17
18
Symbol
Vss
DATA
CLOCK
LCK
Q0~Q11
OE
Vdd
I/O
-
I
I
I
O
I
-
Function
Connect to GND
Serial Data input
Shift Clock of Data
Latch Clock of Data
Parallel Data Output
Latch Data L H
OUTPUT ON OFF
Output Enable
Power Supply
1-41
Page 42
MX-G950V/MX-G880V
MX-G850V/MX-G750V
BU9253AS (IC902) : LPF & Echo mix.
1.Pin layout & block diagram
1
GND
ECHO VR
BIAS
DAINT IN
2
3
4
5
OSC
COUNTER
18
17
16
15
14
CR
MUTE
VCC
ADINT IN
DAINT OUT
DALPF IN
DALPF OUT
MIX OUT
2.Pin function
Pin No.Symbol
1
2
ECHO VR
3
4
5
6
7
8
9
DAINT IN
DAINT OUT
DALPF IN
DALPF OUT
MIX OUT
10
11
12
13
14
ADLPF IN
ADLPF OUT
ADINT OUT
ADINT IN
15
16
17
18
6
7
- +
8
9
GND
BIAS
MIX IN
VCC
NC2
MUTE
CR
D/A
MIX
SRAM
I/O
I
-
I
O
I
O
O
I
I
O
O
I
-
-
I
-
A/D
13
ADINT OUT
12
ADLPF OUT
- +
11
ADLPF IN
10
MIX IN
Descriptions
Connect GND
Echo level control
Non connect
Analog part DC bias
DA side integrator input
DA side integrator output
DA side LPF input
DAside LPF output
Mix AMP output for original tone& echo tone
Mix AMP input pin for original tone
AD side LPF input
AD side LPF output
AD side integrator output
AD side integrator input
Power supply
Non connect
Mute control signal input
CR pin for oscillator
1-42
Page 43
ES3880FL (IC101) : MPEG decoder
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1. Terminal layout
80 ~ 51
100 ~ 81
1 ~ 30
3. Pin function
Pin No.
Symbol I/OFunction
1
VDD
2
RAS#
3
DWE#
4~12
13~28
32~39
45~49
55~62
68~79
29
30
31
40
41
42
43
44
50
51
52
53
54
63
64
65
66
67
80
81
DA0~8
DBUS0~15
RESET#
VSS
VDD
YUV0~7
VSYNC
HSYNC
CPUCLK
PCLK2X
PCLK
AUX0~4
VSS
VDD
AUX6
AUX5
AUX7
LD0~7
LWR#
LOE#
LCS3#
LCS1#
LCS0#
LA0~11
VSS
VPP
2. Block diagram
Processor
Interface
31 ~ 50
Serial
Audio
Interface
TDM
Interface
3.3V power supply
Row address strobe
O
DRAM write enable
O
DRAM multiplexed row and column address bus
O
DRAM data bus
I/O
System reset
I
Ground
-
3.3V power supply
YUV[7:0] 8-bit video data bus
O
Vertical sync
I/O
Horizontal sync
I/O
RISC and system clock input. CPUCLK is used
I
only if SEL_PLL[1:0] = 00 to bypass PLL.
Doubled 54MHz pixel clock
I/O
27MHz pixel clock
I/O
Auxiliary control pins 4:0
I/O
AUX0 and AUX1 are open collectors.
Ground
-
3.3V power supply
Auxiliary control pins 6
I/O
Auxiliary control pins 5
I/O
Auxiliary control pins 7
I/O
RISC interface data bus
I/O
RISC interface write enable
O
RISC interface output enable
O
RISC interface chip select
O
RISC interface chip select
O
RISC interface chip select
O
RISC interface address bus
O
Ground
-
5.0V power supply
-
LA[17:0]
LD[7:0]
LCS3#, LCS#[1:0]
LWR#
LOE#
ACLK
ATCLK
AOUT
ARFS
ATFS
ARCLK
SEL_PLL[1:0]
TDMCLK
TDMDR
TDMFS
AIN
RISC
Processor
Serial Audio
Interface
TDM
Interface
Pin No.
82~87
88
89
90
91
92
93
94
95
96
97
98
99
100
Huffman
Decoder
64x32 ROM
32x32 SRAM
Registers
Symbol I/O
LA12~17
ACLK
AOUT
SEL_PLL0
ATCLK
ATFS
SEL_PLL1
DA9
DOE#
AIN
ARCLK
ARFS
TDMCLK
TDMDR
TDMFS
CAS#
VSS
DRAM Interface
2Kx32 ROM
512x32 SRAM
MPEG
Processor
Video Output
On Screen
Display
DRAM DMA
Controller
Function
RISC interface address bus
O
Master clock for external audio DAC
I/O
Audio interface serial data output when
O
selected.
System and DSCK output clock
I
frequency selection at reset time. The
matrix below lists the available clock
frequencies and their respective PLL
bit settings.
Function
Power supply
Connect to GND
Chip select input
Serial clock input
Start bit,OP-code,address,serial data input
Serial data output,
Internal state display output of READY/BUSY
BA3126N (IC31) : R / P switch
S W
R E C
G
123456789
S W
P / B
GP1U271X (IC701) : Receiver for remote
+
–
Amp.
LimiterIntegrator Comparator
C O N T .
B.P.F
G N D
Demodulator
V c c
P / B
S W
G
S W
R E C
GND
VCCVout
1-51
Page 52
MX-G950V/MX-G880V
MX-G850V/MX-G750V
KIA7042AP-T (IC830) : Regulator
1.
Terminal
layout Block diagram2.
1 2 3
1.VCC
2.GND
3.OUT
RT9161 / A-27CG-X (IC105) : Regulator
1. Pin layout2. Block diagram
VIN
123
GNDVIN
(TAB)
VOUT
Reference
3. Pin function
Pin NameFunction
VOUT
GND
VIN
Output Voltage
Ground
Power Input
TC7S08F-W (IC340) : Buffer
1. Pin layout2. Block diagram
Error Amp
1.2V
VOUT
+
-
GND
Vcc
1-52
IN B
IN A
Vss
1
54VDD
A
Y
2
3
OUT X
B
GND
Page 53
1
4
R1
TR1
TR3
TR2
TR4
TR5
TR6
TR8
R8
C2
TR14TR15
TR16
R14
R11
R13
R12
R10
R9
TR9
TR10
TR12
TR13
TR11
TR7
C1
D1
R6
R3
R4
R5
R7
13
11
14
15
9
8
1256710
2
R2
SUB
STK402-030 (IC101) : Power amp
1.Pin layout
2.Block diagram
115
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1-53
Page 54
MX-G950V/MX-G880V
MX-G850V/MX-G750V
STK402-050 (IC602) : 2ch AF power amp.
Pin
layout
1.
1 ~ 15
2.Block diagram
4
R1
1
2
TR3
R2
8
TR7
TR4
C1
TR5
TR2TR1
D1
R3
R4
R5
R6
TR8
TR6
R7
TR9
TR10
R8
TR12
TR13
R9
R13
TR1E
C2
R15R14
R11
R12
R10
TR16
R14
9
1-54
SUB
151411106712513
Page 55
STK412-010 (IC701) : 2ch AF power amp.
1.
Pin
layout
1 ~ 18
2.Block diagram
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1813
TR41
17
R41
1
14
15
16
TR1TR2
C1R1
TR5
R2
Comparator
Comparator
R51
D42
D53
D52
D43
SUB
3
2
7
5
4
6
TR18
R17
TR17
R13
TR16
R15
R14
R15
C12
D12
C11
R11
TR14 TR13
TR15
R12
TR11TR12
D41
D51
TR51
R3
D2
TR6
C2
R4
TR4TR3
R5
R6
D1
TR7
TR9
TR8
TR10
R7
TR19
TR20
129 8 11 10
1-55
Page 56
MX-G950V/MX-G880V
MX-G850V/MX-G750V
STK412-090 (IC701) : 2ch AF power amp.
1.
Pin
layout
1 ~ 18
2.Block diagram
1813
TR41
17
R41
1
14
15
16
TR1TR2
C1R1
TR5
R2
Comparator
Comparator
R51
D42
D53
D52
D43
SUB
3
2
7
5
4
6
TR18
R17
TR17
R13
TR16
R15
R14
R15
C12
D12
C11
R11
TR14 TR13
TR15
R12
TR11TR12
D41
D51
TR51
R3
D2
TR6
C2
R4
TR4TR3
R5
R6
D1
TR7
TR9
TR8
TR10
R7
TR19
TR20
129 8 11 10
1-56
Page 57
MX-G950V/MX-G880V
MX-G850V/MX-G750V
SCHEMATIC DIAGRAMS
COMPACT COMPONENT SYSTEM
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CD-ROM No.SML200207
CA-MXG950V
COMPACT
DIGITAL VIDEO
COMPACT
DIGITAL AUDIO
MX-G950V/MX-G850V
U-----------------Other Areas
UN----------------------- Asean
UX---------------Saudi Arabia
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
CA-MXG850V
CA-MXG880V
MX-G880V
Area Suffix
UN----------------------- Asean
CA-MXG750V
MX-G750V
Area Suffix
UN----------------------- Asean
US ----------------- Singapore
UX---------------Saudi Arabia
2-1
2-2
2-13~21
No.21099SCH
Jul. 2002
Page 58
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.)
Page 59
Block diagram
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CN215
FMH031-1
CN205
FW915
CN911
CN880
FMB-033-4/034-4
CN207
CN217
FMB-033-3/034-3
FW915
FMH-031-3/040-3
SEARCH
KNOB
FW901
FMB-033-2/034-2
MAIN VOL
WOOFER VOL
SOUND MODE
CN870
RELAY
RY2
J81
SPEAKER TERMINAL
RELAY
RY1
KEY
LED
LED
KEY
LED
FMA-006
FM/DET
AM/DET
IC 1
FM
FM FRONTEND
TU1
IF
5
AM
MW RF/OSC
COIL
4
M
M
L CAM
R CAM
3
SW1 6
PICKUP
TRACKING
FOCUS
FEED
M
2
SPINDLE
M
CN805
CN804
P001
P011
CN855
1SSW 3SSW
1MSW 3MSW
CN854
A+C
B+D
E F
CN601
FM SM
CN801
DRIVER
R MOTOR
DRIVER
CAM0 3
CAM4 7
F
T
FOCUS/SPINDLE/
FEED/TRACKING
BTL DRIVER
IC801
PLL
Synthesizer
IC2
L MOTOR
IC 851
IC 852
RF & SERVO AMP
IC601
FMN-011A
DIGITAL
OUT
UNIT MICOM
CD CHANGER
CONTROL
IC 251
ARF
FMC-022/024-1
CN1
CN11
DIGITAL SERVO
PROCESSOR
TUNER
MPX
CN661
CN651
TX
CD OUT
&
IC 651
TX
DRIVER
SOURCE SELECTOR
& E.VOL
IC436
TAPE
CN315
CN151
CD
CN101
FMV-010
VOLDA,VOKCK
CN504
CN102
VCD
CONPANION
CHIP
IC104
CD
VCD
PROCESSOR
IC101
MAIN
MAIN HPF
MUTE SYSTEM
IC481
INPUT AMP
IC 501
CN316
HARMONICS
GENERATOR
IC 502
KCMND
MSTAT
KCLK
MRDY
SLCKEY
1 2
IC 526
CN870/CN871
CN869\0/CN861
MPX
LPF
MICOM
IC 810
FL DISPLAY
FL 801
FW714
FMB-033-1/034-1
FMH-031-2
MAIN
POWER AMP
IC602
CN704
SUB WOOFER
POWER AMP
IC 701
KEY1,11 CD1LED
CD2LED
CD3LED
SEARCH R,F
KEY21,22
VOL
KEY2,3,21,32,41,42
CN305
PB MECHA HEAD
R
L
RP MECHA HEAD
R
CN301CN302
FMP-007-1
PB/REC AMP
IC302
SERIAL TO PARALLEL
PORT EXTENSION
IC303
1
L
HEAD SW
IC301
PHOTO A,B
ABCDEFG
CN306
SOLENOID DRIVE FOR RP MECHA
Q3314 Q3315
SOLENOID DRIVE FOR PB MECHA
Q3312 Q3313
SLCKEY1 2
DRIVER
FW301CN303
M
FMP-007-2
SLCKEY2
PHB
SLCK
CN333
PHA
PB MECHA
PP MECHA
IC332
SW302
SW306
IC331
SOLENOID
SW303
SW304
SW305
SW316
SOLENOID
2-1
Page 60
Standard schematic diagrams
Primary with mains transformer section
5
0.33( 1/2W)
R1002
CN220
QGD2504C1-03Z
CN214
QJK015-071214
F102
T4AL
F101
T4AL
4
T001
CN218
QGA3901C1-03
CN219
QGA7901C1-04
CN208
WJK0114-001A
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CN209
WJK0070-002A
F003
T2AL
F001
T4AL
CN250
QGA7901C1-02
MX-G950V/MX-G880V
MX-G850V/MX-G750V
3
Parts are safety assurance parts.
2
When replacing those parts make
sure to use the specified one.
1
ABCDEFG
2-2
Page 61
DC regulators / Audio output section (for MX-G750V)
QGA2501C1-02
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CN705
IC701
STK412-090
C706
C705
220P
220P
0.22
C731
R717
0.022
R761
1K
L701
0.45
Q701
D719
10K
R721
KTA1268/GL/-T
R719
1K
5.6K
R766
1K
R718
0.022
Q702
KTA1268/GL/-T
D720
R720
5.6K
QGB2510K2-14
QGB2510J1-14
33k
C730
R762
1K
KTC1027/OY/-T
CN205
Q713
56k
R704
56k
R703
L702
0.45
R714
10K
R722
CN215
R725
R729
82K
KTC3200/GL/-T
Q726
R728
10K
100K
Q736
2SC3576-JVC-T
Q734
2SC3576-JVC-T
Q733
2SC3576-JVC-T
Q735
2SC3576-JVC-T
R726
2SC2785/FE/-T
Q728
C729
47/16
R740
820
R739
820
100K
D703D704
DZ15BSC-T2
DZ15BSC-T2
R723
R724
R741
6.8k
6.8k
D723
DZ36BSA-T2
D728
10
R774
0.22
R753
DZ36BSA-T2
C709
4.7p
R707
56K
R754
10
R713
R715
10
C713
0.047
C715
0.047
R742
6.8k
D724
6.8k
C707
47/63
820
R705
5
4
CN201
CN703
CN704
QGD2504C1-03Z
CN706
QGD2504C1-03Z
KRA111M-T
QGD2504C1-03Z
QGB2510J1-11
Q737
R736
4.7K
R734
4.7K
R733
4.7K
R735
4.7K
C726
R730
10K
10/25
R727
100K
Q727
KTA1268/GL/-T
2SA965/OY/-T
R778
10K
10K
R777
C722
10/50
C703 C704
C721
10/50
C710
4.7p
R708
56K
10
C708
R716
10
C714
0.0470.047
R706
C716
PRT
3
PRT
SURR.CTRL
R281
82K
R282
82K
R786
Q710
10K
10K
R787
R776
0.1
0.1
C711
C712
1k
470p
470p
R775
1k
47/63
C739
1/50
820
KTC3200/GL/-T
Q711
D726
100K
R768
R769
Q712
KTA1268/GL/-T
47
47
R702
R701
2.2K
C723
100/10
Q790
2SC2785/FE/-T
R792
1K
10k
R790
D790
100K
R793
47/25
C790
R798
10
10k
R796
R795
6.8K
R797
20K
Q792
Q791
KTC3203/OY/-T
2SC2785/FE/-T
10k
R794
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
C683
R680
R681
1M
2SK301/PQ/-T
3.9K
CN217
QGB2510K2-10
RY1
QSK0109-001
1SS119-041-T2
D725
QNB0006-001
J81
0.082
Q680
R682
4.7M
CN207
QGB2510J1-10
R220
150
MAIN SIGNAL
CN710
QGD2504C1-03Z
CN202
QGB2510J1-10
DZ2.4BSB-T2
R284
D280
47K
15K
R283
C280
0.22/50
R242
10K
2SC2785/FE/-T
Q240
2
1N4003S-T5
D227
C216
DZ9.1BSB-T2
47/50
R202
2.2
D220
100/35
C222
27K
R217
D217
C214
2200/35
C212
0.082
C221
47/50
R205
D234
C374
DZ11BSC-T2
100K
C253
6800/25
2A02M-T
22/50
CN204
QGA3901C1-07
R248
1
D233
R246
2A02M-T1
R247
1
R249
1
1
Q373
KRA104M-T
R389
10K
Q374
KRC104M-T
C372
5.6K
R385
R384
2.7K
D370
22/50
D369
C373
DZ10BSC-T2
0.01
Q372
KTA1023
1N4003S-T5
D218
1N4003S-T5
0.082
Q201
2SB740/BC/-T
DZ9.1BSB-T2
330
0.33( 1/2W)
D362
STBY
C309
R309
C362
DZ6.8BSC-T2
L7812CP
IC304
C310
D314
10/50
DZ13BSB-T2
IC301
KIA78R05PI
D308
STBY
C301
C302
10/50
DZ5.6BSC-T2
R311
10K
22/50
R203
7.5K
C219
C220
22K
R204
47/50
0.01
C218
D219
C217
22/50
47/63
DZ33BSC-T2
CN206
QNZ0136-001Z
QGB2510J1-12
9V
8V
5.6V
CN216
EP201
QGB2510K2-12
27K
R218
C211
C215
0.082
2200/35
C213
0.1
R215
C204
C202
C203
47K
R216
C205
0.1
4700/53
C201
0.1
4700/53
47K
R306
0.33
R302
2.2
IC303
L7808CP
C307
STBY
C308
D313
10/50
D316
STBY
DZ8.2BSB-T2
R360
2.2
R361
4.7
R365
R366
200
200
D361
R364
DZ9.1BSB-T2
IC305
L7809CP
C360
C312
Q360
KTC2026/OY/-T
Q362
47/16
D315
10/50
R362
R368
330
C361
0.01
C311
STBY
Q361
2SC2785/FE/-T
2SC2785/FE/-T
330
R363
1.2K
R367
1.2K
D360
DZ5.1BSB-T2
ABCDEFG
2-3
Page 62
MX-G950V/MX-G880V
MX-G850V/MX-G750V
MX-G950V/MX-G880V
MX-G850V/MX-G750V
DC regulators / Audio output section (for MX-G850V, G880V, G950V)
CN705
QGA2501C1-02
IC701
2SA965/OY/-T
C706
C705
220P
220P
0.22
C731
R717
0.022
R761
1K
L701
0.45
Q701
D719
10K
R721
KTA1268/GL/-T
R719
1K
5.6K
33k
R766
1K
R718
0.022
Q702
KTA1268/GL/-T
D720
R720
QGB2510K2-14
QGB2510J1-14
C730
R762
1K
5.6K
KTC1027/OY/-T
CN215
CN205
Q713
56k
R704
56k
R703
L702
0.45
R714
10K
R722
R725
R729
82K
KTC3200/GL/-T
Q726
R728
10K
100K
R639
820
R640
820
Q736
2SC3576-JVC-T
Q734
2SC3576-JVC-T
Q733
2SC3576-JVC-T
Q735
2SC3576-JVC-T
R726
2SC2785/FE/-T
Q728
C729
47/16
R740
820
R739
820
100K
D703D704
DZ15BSC-T2
DZ15BSC-T2
R723
R724
R741
6.8k
6.8k
D723
DZ36BSA-T2
D728
10
R774
0.22
R753
DZ36BSA-T2
C709
4.7p
R707
56K
R754
10
R713
R715
10
C713
0.047
C715
0.047
R742
6.8k
D724
6.8k
C707
47/63
820
R705
5
CN703
QGD2504C1-03Z
KRA111M-T
Q737
R736
4.7K
R734
4.7K
R733
4.7K
R735
4.7K
C726
R730
10K
10/25
R727
100K
Q727
4
KTA1268/GL/-T
QGB2510J1-11
CN201
CN704
QGD2504C1-03Z
MAINL
MAINR
CN706
QGD2504C1-03Z
R778
10K
10K
R777
C722
C703 C704
C721
C710
4.7p
R708
56K
10
C708
R716
10
C714
0.0470.047
R706
C716
PRT
3
PRT
SWFB
SURR.CTRL
C281
R281
47/63
R786
Q710
10K
10K
R787
R776
0.1
0.1
C711
C712
1k
470p
470p
R775
1k
47/63
C739
1/50
820
KTC3200/GL/-T
Q711
D726
100K
R768
R769
Q712
KTA1268/GL/-T
47
47
R702
R701
2.2K
C723
100/10
Q790
2SC2785/FE/-T
R792
1K
10k
R790
D790
R220
47
1SS119-041-T2
47/25
C790
CN207
QGB2510J1-10
100K
R793
MAINL
SWL
R798
10
10k
R796
6.8K
R795
R797
20K
Q792
Q791
2SC2785/FE/-T
10k
R794
0.1
C639
CN217
QGB2510K2-10
KTC3203/OY/-T
C607
R605
RY1
QSK0109-001
QSK0109-001
R675
1k
R676
1k
C609
10P
R607
56K
47/63
C613C615
RY2
IC602
C621
10/35V
C603
220p
C604
220p
10/35V
R615
10
0.047
0.047
D725
D650
C605
220P
56k
R603R604
56k
C622
R617
C601C602
0.068
10
L601
R613
0.45
Q601
KTA1268/GL/-T
D619
10K
R621
R619
C683
1M
R680
0.082
Q680
R682
2SK301/PQ/-T
4.7M
R653
D622
DZ9.1BSB-T2
R602
100
47/50
C612
R666
33k
220
C608
2.2K
R606
R681
3.9K
R655
0.22
Q613
C611
R616
10
QNB0107-001
C606
220P
R674
0.45
10
0.068
KTA1268/GL/-T
Q602
10K
R623
Q612
2SA1175/FE/-T
R618
D620
R620
R668
10k
10k
R667
220
2.2K
KRC102M-T
100
R601
47/50
10
R614
L602
0.22
C624
10/50
C623
10/50
C610
10P
R608
56K
47/63
C614C616
0.047
0.047
J81
CN202
QGB2510J1-10
DZ2.4BSB-T2
R284
D280
47K
15K
R283
C280
0.22/50
R242
10K
2SC2785/FE/-T
Q240
CN710
QGD2504C1-03Z
2
1N4003S-T5
D227
C216
DZ9.1BSB-T2
47/50
R202
2.2
D220
100/35
C222
27K
R217
D217
C214
C212
0.082
C221
47/50
CN204
QGA3901C1-07
R248
1
R246
2A02M-T1
R247
1
R249
1
Q373
1
KRA104M-T
R389
10K
Q374
KRC104M-T
C372
5.6K
R385
R384
2.7K
D370
22/50
D369
C373
DZ10BSC-T2
0.01
Q372
KTA1023
D233
C374
DZ11BSC-T2
R205
100K
C253
6800/25
D234
2A02M-T
22/50
ABCDEFG
1N4003S-T5
D218
1N4003S-T5
0.082
Q201
2SB740/BC/-T
DZ9.1BSB-T2
330
D362
0.33( 1/2W)
STBY
C309
R309
C362
DZ6.8BSC-T2
L7812CP
IC304
C310
D314
10/50
DZ13BSB-T2
IC301
KIA78R05PI
STBY
C301
R311
22/50
D308
C302
10/50
DZ5.6BSC-T2
10K
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
* All printed circuit boards and its assemblies are not available as service parts.
Area suffix
UX ------------------- Saudi Arabia
UN ----------------------------Asean
U ---------------------- Other Areas
- Contents -
Exploded view of general assembly and parts list (Block No.M1)
Speaker assembly and parts list SP-XG950V (Block No.M7)
Speaker assembly and parts list SP-WG950V (Block No.M8)
CD changer mechanism assembly and parts list (Block No.MA)
CD mechanism assembly and parts list (Block No.MB)
Cassette mechanism assembly and parts list (Block No.MP)
Electrical parts list (Block No.01~08)
Packing materials and accessories parts list (Block No.M3,M5)
SCREW1
ROD
FFC WIRE
WIRE & TUBE1
T.SCREW
SPACER1
FAN BRACKET
SCREW
T.SCREW
PLASTIC RIVET
CHASSIS BASE
FELT SPACER
HEAT SINK
T.SCREW
LEAP SPRING
T.SCREW
SPECIAL SCREW
T.SCREW
T.SCREW
STRAIN RELIEF
FUSE
FUSE
FUSE
WIRE HOLDER
POWER TRANSF
FLAT WIRE
FFC WIRE
FFC WIRE
FFC WIRE1
FFC WIRE
FFC WIRE1
FFC WIRE
POWER CORD
POWER CORD
REAR PANEL
REAR PANEL
REAR COVER
T.SCREW
FAN
SPECIAL SCREW
SPECIAL SCREW
SPECIAL SCREW
SPECIAL SCREW
SPECIAL SCREW
SPECIAL SCREW
SPECIAL SCREW1
SPECIAL SCREW
METAL COVER
Description
1
1
4
FOR VDM1001-M00
1
2
FAN BRKT/CD MEC
2
FAN TO FAN BRAC
1
TUNER BRD.+ FMC
1
2
CHASS BASE FOOT
1
4
FOR POWER IC
1
2
FOR LEAF SPRING
4
FOR TRANS/CH.BS
2
FMH BRD./CH.BS
1
FMC BRD./CH.BS
1
1
F001
1
F101
1
F102
1
1
T001
1
FMC TO VC3
1
FMC TO TUNER
1
FMB TO FMC(1)
FMB TO FMC(2)
1
FMC TO SLC
FMB TO SLC
1
FMB TO SW
1
1
1
1
1
2
C3 & STAY BRKT
1
SUPPLIER NIDEC
1
REAR PNL/CHAS.B
4
REAR PNL/ H.SIN
1
REAR PNL/ AUX
2
C3/ REAR PANEL
2
SPK/ REAR PANEL
2
TUNER/REAR PANE
REAR CVR/R.PNL
1
OPTICAL/R.PANEL
1
Block No. M1MM
U,UN
UX
U,UN
UX
3-4
Page 84
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Parts list (General assembly)
Item
A
99QYSDSG3006M
100QYSBSGY3008E
101GV20106-002A
102GV20107-002A
103GV20108-002A
104GV30179-001A
105GV30180-002A
106GV30181-002A
107GV30182-002A
108GV20098-018A
109GV40181-001A
110GV30155-001A
111GV30151-001A
112GV30152-001A
113GV30153-001A
114GV40186-001A
115GV30141-001A
116E3400-439
117QYSBSGY3008E
118VKZ4001-110S
119QMF51E2-2R0-J1
120GV40236-001A
121QYSBSF3012E
122GV40083-002A
123E310243-002
124QYSBSF3008Z
125GV30223-001A
126QUQH10-1506BJ
127QUQH10-1508BJ
128QYSBSGY3008E
129QYSBSGY3008E
Parts numberParts nameArea
Q'ty
T.SCREW
SPECIAL SCREW
CD FITTING 1
CD FITTING 2
CD FITTING 3
VOLUME KNOB ASSY
SUB.WFR.KB.ASSY
SND.MODE KB.ASSY
CD.FWD.KB.ASSY
WINDOW SCREEN
MIRROR SHEET
VOLUME RING
S/WOO FER RING
SOUND MODE RING
CD FORWARD RING
NUT
FL HOLDER
FELT SPACER
SPECIAL SCREW
WIRE HOLDER
FUSE
PLASTIC HOLDER
SPECIAL SCREW
MIC VOLUME KNOB
PLASTIC RIVET
SCREW
BRACKET
FLAT WIRE
FLAT WIRE1
SPECIAL SCREW
SPECIAL SCREW1
Description
2
M.COVER/CHAS.BS
6
M.COVER/R.PANEL
1
DISC 1
1
DISC 2
1
DISC 3
1
1
1
1
1
1
1
1
1
1
1
FOR VOLUME ENCO
1
2
1
REAR PNL/ERT PL
1
MIC GROUND WIRE
1
F003
1
STICK AT FMH BO
2
VOLT SEL/R.PNL
1
2
FOR MPEG BOARD
1
BRACKET TO C3
1
1
VC3 TO FMV
FMC TO FMV
1
VIDEO/R.PANEL
SUR.SP/R.PANEL
Block No. M1MM
3-5
Page 85
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Speaker assembly and parts list
Block No.
M
M
7
M
SP-XG950V
1
9
6
5
3
7
4
8
8
8
4
2
2
Parts list (Speaker assembly) SP-XG950V
A
Item
AMXG950K-SPBOX-R
1199733350151
2135604161053
3991061650050
4135604161047
5993060500031
6135604081045
7134720201090
8147780071049
9---------------
Parts numberParts nameArea
SP BOX ASSY(R)
MXG950K-SPBOX-L
199733350152
SP BOX ASSY(L)1
FRONT PANEL(R)
FRONT PANEL(L)
SCREW
16CM WOOFER
SCREW
5CM TWEETER2
SCREW
PIEZO ASSY2
FOOT8
CABINET ASSY
Q'ty
1
SP-XG950V
SP-XG950V
1
1
8
FOR FRONT PANEL
2
8
M4X16 FOR WOOFER
4
M4X8 FOR TWEETER
PER PIECE
2
Block No. M7MM
Description
3-6
Page 86
Speaker assembly and parts list
SP-WG950V
1
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Block No.
M
6
M
8
M
4
4
2
2
Parts list (Speaker assembly) SP-WG950V
A
Item
AMXG950K-SPKSB-R
1199733350156
2135604161053
3991062000052
4135604161047
5147780071049
6---------------
Parts numberParts nameArea
SP BOX ASSY(R)
MXG950K-SPKSB-L
199733350157
SP BOX ASSY(L)
FRONT PANEL(L)
FRONT PANEL(R)
SCREW
20CM SUBWOOFER
SCREW8
FOOT
CABINET ASSY
5
3
Q'ty
1
1
1
1
8
2
8
2
5
Block No. M8MM
Description
SP-WG950V
SP-WG950V
FOR SUBWO OFER
FOR SUBWO OFER
FOR FRONT PANEL
FOR SUBWO OFER
3-7
Page 87
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CD changer mechanism assembly and parts list
Grease = EM-30L
= EBS0006-009B
= FL-7750E
FIG B
FIG C
Opposite side
the same.
FIG B
45
M
C3BASE-1M
29
30
40
42
36
33
42
A
25
24
20
27
5
6
21
18
39
51
28
FIG C
B
14
C
13
4
3
43
51
50
49
48
16
17
8
4
5
6
D
E
3
12
9
31
34
7
6
10
H
11
Block No.
32
38
19
46
26
41
37
42
23
22
27
A
35
FIG A
M
M
3-8
47
47
47
44
15
C
B
H
A
E
FIG A
D
15
1
2
2
52
CAUTION
The axes of each gear
to apply grease:Half face
Page 88
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Parts list (CD changer mechanism)
Item
A
1VKS1144-004
2VKS3698-003
3VKS5532-003
4VKB3000-164
5VKS5505-003
6VKS5506-002
7VKS5507-002
8VKS5508-002
9VKS5510-003
10VKH5769-001
11VKS5511-002
12VKW5155-003
13VKM3846-003
14VKS5509-002MM
15MSN5D257A-SA2
16QYSPSPD2616Z
17LV40612-001A
18VKM3825-00B
19VKZ3172-00ASS
20VKZ3173-00ASS
21QYSPST2606Z
22VKS2263-002MM
23VKS2264-002MM
24VKS2265-002MM
25WDL316050MM
26WDL316050MM
27QYSBSF2608Z
28VKS3702-00FMM
29VKS2247-005
30VKL7767-00F
31QYSBSF2606Z
32VKM3860-00E
33VKL7802-00D
34QYSDST2604Z
35VKL7810-00B
36VKL7811-00B
37VKL7812-00B
38VKL2745-003
39VKM3857-002
40QYSDST2604Z
41WDL266035-2
42QYSBSF2608Z
43VKS5514-002MM
44VKY3133-002MM
45QYSBSF2608Z
46VKY3134-003MM
47VKS2252-00N
48VKS2250-004
49VKS5515-002
50VKW5156-004
51QYSBSF2608Z
52QYSBSF2608Z
Parts numberParts nameArea
CHASSIS
TRAY GUIDE
PULLEY GEAR
BELT
GEAR B
GEAR C
CROSS GEAR U
CROSS GEAR L
SELECT LEVER
S.G.SHAFT
SELECT GEAR
COMP.SPRING
GEAR BRACKET
CYLINDER GEAR
DC MOTOR ASSY
SCREW
COMP.SPRING
C.G.BASE ASS'Y
CAM SW. R ASS'Y
CAM SW. L ASS'Y
SCREW
CAM R1
CAM R2
CAM GEAR L
SLIT WASHER
SLIT WASHER
T.SCREW
DRIVE UNIT
MECHA HOLDER A
BRACKET ASS'Y
SCREW
M.HOLDER B AS'Y
M.HOLDER C AS'Y
SCREW
LIFTER ASS'Y R
LIFTER ASS'Y L
LIFTER ASS'Y H
LIFTER BASE
LIFTER BRACKET
SCREW
SLIT WASHER
T.SCREW
LOCK LEVER
RETURN SPRING
T.SCREW
CLICK SPRING
TRAY ASS'Y
TOP BRACKET
S.TRAY STOPPER
TORSION SPRING
T.SCREW
T.SCREW
Q'ty
1
2
2
2
2
3
1
1
1
1
1
1
FOR SELECT GEAR
1
1
2
2
FOR MOTOR
1
1
1
1
3
FOR CAM SW.
1
1
1
1
FOR CAM GEAR L
1
4
FOR C.GEAR BASE
1
1
1
2
FOR BRACKET
1
1
2
FOR M.HOLDER C
1
1
1
1
1
1
1
4
3
1
1
FOR RETURN SP.
1
3
1
1
1
3
2
Block No. MAMM
Description
3-9
Page 89
MX-G950V/MX-G880V
MX-G850V/MX-G750V
CD mechanism assembly and parts list
Grease & Bond
= EBS0006-013B
= 1401B
2
8
Block No.
M
M
B
M
15
4
2
3
5
7
6
1
5
0.1mm
+
-
19.4
8
Turn table hight
Parts list (CD mechanism)
Item
A
1E102731-221SM
2OPTIMA-7B
3E406777-002SM
4LV31002-001A
5E307745-441SM
6QYSDSP2003N
7E406750-442SM
8EPB309173PKA
9E406784-001
10QAR0130-001
11EMW10190-441
12QG A2001F1-06
13QSW0506-001
14E75832-221SS
15QYSDSF2006Z
Parts numberParts nameArea
10
CD MECHA BASE A
C.D PICK
C.D SHAFT
CD RACK
C.D GEAR 3
SCREW
PINION
T.T PACKING
FEED MOTOR
SP MOTOR
CIR BOARD
CONNECTOR
LEAF SWITCH
SPECIAL SCREW
SCREW
10
9
13
12
11
EXL-M7TMB
14
Block No. MBMM
Q'ty
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
Description
3-10
Page 90
Cassette mechanism assembly and parts list
MX-G950V/MX-G880V
MX-G850V/MX-G750V
SLC-W101M
10
29
F
1
16
Block No.
1
5
13
5
9
7
12
6
15
23
6
Cassette
F
switch board
11
16
2
5
6
15
23
5
M
13
M
M
P
7
12
9
29
6
24
30
24
1
30
27
27
19
C
A
2
3
8
19
D
B
8
2
25
3
25
14
28
18
21
31
26
A
34
E
20
34
22
17
14
18
21
28
E
20
31
22
17
26
B
36
35
36
36
33
33
32
0.1
0.15 mm
9.7
32
36
36
1
37
C
D
37
2
Head amplifier &
mechanism control board
37
37
3-11
Page 91
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Parts list (Cassette mechanism)
Item
A
1VKS1165-00K
2VKR4749-004
3LV42026-001A
5VKS2274-002
6VKW5286-002
7VKS5559-001
8VKS5597-00B
9LV42013-001A
10SLC-P1SVM
11SLC-RP1SVM
12VKY3149-002
13VKM3906-004
14VKS1166-004
15VKW5279-002
16VKW5280-001
17VKS5603-00G
18VKS3785-001MM
19VKW5284-002
20VKS2278-003
21VKW5301-001
22VKW5266-001
23WDL214025
24QYSBSF2005Z
25VKS3786-00G
26VKF3205-00B
27WDL183425
28VKF3207-00B
29WDL173525-6
30VKZ3174-00A
31LV42764-001A
32MSI-5U2LWA
33VKR4761-001
34QYSPSP2604Z
35VKM3907-001
36QYSBSF2608Z
37QYSBSF2608Z
Parts numberParts nameArea
Q'ty
CHASSIS B.ASS'Y
IDLE PULLEY
SHAFT
REEL GEAR
B.T. SPRING
PLAY IDLE GEAR
BLIND
EARTH SPRING
HEAD MOUNT ASSY
HEAD MOUNT ASSY
CASSETTE SP.
PLAY SW.LEVER
CONTROL CAM
HEAD BASE SP(R)
HEAD BASE SP(L)
MAIN PULLEY ASY
FR ARM
SWING SPRING
TRIGGER ARM
FR SPRING
ELEVATOR SPRING
WASHER
T.SCREW
CLUTCH ASS'Y
F.WHEEL ASSY(R)
SLIT WASHER
F.WHEEL ASSY(L)
SLIT WASHER
DC SOLENOID2
CAPSTAN BELT(B)
D.C.MOTOR ASS'Y1
MOTOR PULLEY
SCREW
JOINT BRACKET
T.SCREW
T.SCREW
2
2
2
4
4
2
2
2
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
1
6
5
FOR P.W.B.
Block No. MPMM
Description
3-12
Page 92
Grease point
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Grease
=JC-525
=UD-24
=LEN-320M
=MOBIL-1
1
25
18
B mecha
20
28
26
17
A mecha
3-13
Page 93
MX-G950V/MX-G880V
MX-G850V/MX-G750V
Front view
1
9
12
Rear view
7
1
8
5
13
1615
5
6
A - A (2/1, 2 places)
B
B
A
A
7
B - B (2/1)
5
8
C - C (2/1)
2
D - D (2/1)
14
E
E
3
A
A
10
1
C
C
14
E - E (5/1)
2
D
3
D
13
13
9
14
1
(Dipping)
3-14
Page 94
MX-G950V/MX-G880V
e
Q
MX-G850V/MX-G750V
Electrical parts list (Power board)
Item
A
C 201QFKC2EK-104METAL CAPACITOR.10MF 10% 250V
C 202QFKC2EK-104METAL CAPACITOR.10MF 10% 250V
C 203QFKC2EK-104METAL CAPACITOR.10MF 10% 250V
C 204EETB1JM-478JCE CAPACITOR
C 205EETB1JM-478JCE CAPACITOR
C 211QFLC1HJ-823ZM CAPACITOR.082MF 5% 50V
C 212QFLC1HJ-823ZM CAPACITOR.082MF 5% 50V
C 213QFLC1HJ-823ZM CAPACITOR.082MF 5% 50V
C 214EETB1HM-228JCAL E.CAPACITOR
C 215EETB1HM-228JCAL E.CAPACITOR
C 216QETN1VM-107ZE CAPACITOR100MF 20% 35V
C 217EETC2AM-476ZJC AL E.CAPACITOR
C 218EETC1HM-226ZJC E CAPACITOR
C 219QDYB1CM-103YC CAPACITOR
C 220EETC1HM-476ZJC AL E.CAPACITOR
C 221EETC1HM-476ZJC E CAPACITOR
C 222EETC1HM-476ZJC E CAPACITOR
C 253EETB1EM-688JCAL E.CAPACITOR
C 280EETC1HM-224ZJC E CAPACITOR
C 281QETN1JM-476ZE CAPACITOR47MF 20% 63V
C 372EETC1HM-226ZJC E CAPACITOR
C 373QDYB1CM-103YC CAPACITOR
C 374EETC1HM-226ZJC E CAPACITOR
C 601QFVJ1HJ-683ZMF CAPACITOR.068MF 5% 50V
C 602QFVJ1HJ-683ZMF CAPACITOR.068MF 5% 50V
C 603QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 604QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 605QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 606QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 607QETN1JM-476ZE CAPACITOR47MF 20% 63V
C 608QETN1JM-476ZE CAPACITOR47MF 20% 63V
C 609QCSB1HJ-100YC CAPACITOR10PF 5% 50V
C 610QCSB1HJ-100YC CAPACITOR10PF 5% 50V
C 611QETN1HM-476ZE CAPACITOR47MF 20% 50V
C 612QETN1HM-476ZE CAPACITOR47MF 20% 50V
C 613QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 614QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 615QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 616QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 621QTE1V06-106ZE CAPACITOR
C 622QTE1V06-106ZE CAPACITOR
C 623QETN1HM-106ZE CAPACITOR10MF 20% 50V
C 624QETN1HM-106ZE CAPACITOR10MF 20% 50V
C 639QFLC1HJ-104ZM CAPACITOR.10MF 5% 50V
C 683QFLC1HJ-823ZM CAPACITOR.082MF 5% 50V
C 703QCBB1HK-471YC CAPACITOR470PF 10% 50V
C 704QCBB1HK-471YC CAPACITOR470PF 10% 50V
C 705QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 706QCBB1HK-221YC CAPACITOR220PF 10% 50V
C 707QETN1JM-476ZE CAPACITOR47MF 20% 63V
C 708QETN1JM-476ZE CAPACITOR47MF 20% 63V
C 709QCSB1HK-4R7YC CAPACITOR4.7PF 10% 50V
C 710QCSB1HK-4R7YC CAPACITOR4.7PF 10% 50V
C 711QFZ0212-104ZMM CAPACITOR.10MF
C 712QFZ0212-104ZMM CAPACITOR.10MF
C 713QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 714QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 715QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 716QFLC1HJ-473ZM CAPACITOR.047MF 5% 50V
C 721QTE1V06-106ZE CAPACITOR
C 722QTE1V06-106ZE CAPACITOR
C 723EETC1AM-107ZJC E CAPACITOR
C 726EETC1EM-106ZJC E CAPACITOR
Parts numberParts nameAr
Block No. 01
Remarks
a
Item
A
C 729EETC1CM-476ZJC E CAPACITOR
C 730QCF31HZ-223ZC CAPACITOR.022MF +80:-20%
C 731QCF31HZ-223ZC CAPACITOR.022MF +80:-20%
C 739EETC1HM-105ZJC E CAPACITOR
C 790EETC1EM-476ZJC E CAPACITOR
C 901QDYB1CM-103YC CAPACITOR
C 902QDYB1CM-103YC CAPACITOR