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MX-J570V
MX-J680V




SERVICE MANUAL
COMPACT COMPONENT SYSTEM


MX-J570V US
Area Suffix
Singapore

MX-J680V UX Saudi Arabia




SUPER VIDEO




COMPACT
SOUND VOCAL
MODE MASKING ECHO SLEEP


FM MODE
STILL V.INTRO HIGHLIGHT SUBTITLE



TAPE A/B



REC
START/STOP DIGITAL VIDEO
ACTIVE
BASS EX.


ON SCREEN



PREV
KEY CONTROL
NEXT
COMPACT

FADE
MUTING




SUPER VIDEO
RM--SMXJ570V REMOTE CONTROL




COMPACT


This illustration is MX-J570V DIGITAL AUDIO



Each difference point
Color
Model CD/DECK/RECEIVER SPEAKER
Tray fitting Panel Net Front
MX-J570V CA-MXJ570V SP-MXJ570V Silver & Blue Light blue Silver
Silver
MX-J680V CA-MXJ680V SP-MXJ680V Champagne-gold Gray Champagne-gold



Contents
Safety precautions 1-2 Diagnosis which uses
Important for laser products 1-3 extension wire method 1-33
Preventing static electricity 1-4 Flow of functional operation
Precautions at disassembling until TOC read 1-34
and parts replacement 1-5 Maintenance of laser pickup 1-35
Disassembly method 1-6 Replacement of laser pickup 1-35
Adjustment method 1-29 Description of major ICs 1-36




COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No.20853
Jul. 2000
MX-J570V/MX-J680V

Safety Precautions
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
AC VOLTMETER
metal part and a known good earth ground. (Having 1000
Measure the AC voltage across the resistor with the ohms/volts,
AC voltmeter. or more sensitivity)
Move the resistor connection to eachexposed metal
part, particularly any exposed metal part having a 0.15 F AC TYPE
return path to the chassis, and meausre the AC
Place this
voltage across the resistor. Now, reverse the plug in probe on
the AC outlet and repeat each measurement. voltage each exposed
measured Any must not exceed 0.75 V AC (r.m.s.). 1500 10W metal part.
This corresponds to 0.5 mA AC (r.m.s.).
Good earth ground

Warning
1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
! CAUTION Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

1-2
MX-J570V/MX-J680V

Important for laser products
1.CLASS 1 LASER PRODUCT 5.CAUTION : If safety switches malfunction, the laser is able
2.DANGER : Invisible laser radiation when open and inter to function.
lock failed or defeated. Avoid direct exposure to beam. 6.CAUTION : Use of controls, adjustments or performance of
3.CAUTION : There are no serviceable parts inside the procedures other than those specified herein may result in
Laser Unit. Do not disassemble the Laser Unit. Replace hazardous radiation exposure.
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible laser
radiation and is equipped with safety switches which ! CAUTION Please use enough caution not to
see the beam directly or touch it
prevent emission of radiation when the drawer is open and
in case of an adjustment or operation
the safety interlocks have failed or are de check.
feated. It is dangerous to defeat the safety switches.



VARNING : Osynlig laserstrålning är denna del är öppnad ADVARSEL : Usynlig laserstråling ved åbning , når
och spårren är urkopplad. Betrakta ej strålen. sikkerhedsafbrydere er ude af funktion. Undgå
VARO : Avattaessa ja suojalukitus ohitettaessa olet udsættelse for stråling.
alttiina näkymättömälle lasersäteilylle.Älä katso ADVARSEL : Usynlig laserstråling ved åpning,når
säteeseen. sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.




REPRODUCTION AND POSITION OF LABELS


WARNING LABEL

DANGER : Invisibie laser radiation VARO : Avattaessa ja suojalukitus VARNING : Osynlig laserstrålning är ADVARSEL :Usynlig laserstråling
when open and interlock or ohitettaessa olet alttiina denna del är öppnad och spårren är ved åbning , når
defeated. näkymättömälle lasersäteilylle.Älä urkopplad. Betrakta ej strålen. (s) sikkerhedsafbrydere er ude af
AVOID DIRECT EXPOSURE TO katso säteeseen. (d) funktion. Undgå udsættelse for
BEAM (e) stråling. (f)




CLASS 1
LASER PRODUCT




1-3
MX-J570V/MX-J680V

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 CD changer
mechanism
*Please refer to "Disassembly method" in the text for pick-up and how to assembly
detach the CD traverse mechanism.
1. Remove the disk stopper and T. bracket on the CD changer mechanism
assembly. CD traverse
2. Disconnect the harness from connector on the CD motor board. unit

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 Fig.1
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. Soldering
Flexible cable
Fig.2

1-4
MX-J570V/MX-J680V

Precautions at disassembling and parts replacement
This model is charged with electricity on the power board
even if the power cord is unplugged.
Therefore, always discharge electricity in accordance with
the steps given below before starting disassembling of the
unit and/or replacement of parts.

1. While referring to the disassembling steps, remove the
metal cover and the CD changer mechanism.

2. Set electrical resistances of 1kohm 1/4W to the places
between the + and - terminals of the respective condensers
C204 and C205 on the power board, and discharge electricity
for 4 ~ 5 seconds.


C205 C204




Power board




1-5
MX-J570V/MX-J680V

Disassembly method A
Metal cover

Removing the metal cover
(See Fig.1 to 3)
1. Remove the six screws A attaching the metal cover
on the back of the body.
A A
2. Remove the two screws B attaching the metal cover
on both sides of the body.

3. Remove the metal cover from the body by lifting the
rear part of the cover.

ATTENTION: Do not break the front panel tab fitted Fig.1
to the metal cover.


Metal cover




B Fig.2


Metal cover




Fig.3 B




1-6
MX-J570V/MX-J680V

Removing the CD changer mechanism Video CD board
assembly (See Fig.4 to 6) CD changer
mechanism assembly
Prior to performing the following procedure, remove
Rear panel Front panel assembly
the metal cover.

1. For the card wire connecting the CD changer
mechanism board and the main board, disconnect it
from connector CN868 on the main board.

2. Remove the two screws C attaching the CD changer
mechanism assembly on both sides of the body.
C
CN102
3. Remove the two screws D attaching the CD changer
mechanism assembly to the rear panel. Remove TW100
the screw E attaching the AUX terminal on the back
of the body.

4. Remove the screw F attaching the video out terminal Fig.4
on the back of the body. Then disconnect it from
connector CN102 on the video CD board, and pull
CD changer CD changer
out the earth wire TW100 on the video CD board. mechanism assembly mechanism board
Front panel assembly
5. Pull the top of rear panel and the front panel
assembly outward respectively, then remove the CD
changer mechanism assembly and video out board
by lifting the rear part of the CD changer mechanism
assembly. C
Rear panel



CN870
Removing the video CD board
(See Fig.7) Main board
CN868 CN871
Prior to performing the following procedure, remove
the CD changer mechanism assembly.

1. Reverse the CD changer mechanism assembly. Fig.5 Input / output board

2. Remove the two screws H attaching the bracket.
D
3. Remove the screw I attaching the video CD board. F Rear panel

4. Disconnect the card wire from connector CN100 and CD Optical
CN101 on the video CD board. digital output
terminal
5. At first, remove the claw a. Then remove the claw b
while raising the video CD board in the direction of
the arrow mark as figure. After removing the claw b, G
you can removing the video CD board by pulling it
backward.
Bracket E
Video out board
Video CD board
CN100
H
CLAW a
Fig.6
CN101
CLAW b I
CD changer
mechanism assembly Fig.7 Video CD board
1-7
MX-J570V/MX-J680V

Removing the front panel assembly
(See Fig.8 to 10) J
Prior to performing the following procedure, remove Front panel assembly
the metal cover and the CD changer mechanism
assembly.

1. Disconnect the card wire from connector CN865 on
the main board and pull out the earth wire on the
main board.

2. Disconnect the card wire from connector CN315 on
the input / output board.

3. Disconnect the harness from connector CN912 on
the input / output board.


4. Disconnect the harness from connectors CN900 and Fig.8
CN901 on the relay board on the back of the front
panel assembly respectively.
Front panel assembly
5. Disconnect connector CN870 and CN871 on the CN871 CN870
input/output board from the main board respectively.

6. Remove the four screws J attaching the front panel
assembly on the bottom of the body.
Main board
CN865
7. Release the two joints b and c on the lower part of
the sides using a screwdriver, and remove the front
CN912
panel assembly toward the front.

CN315


Joint b
Fig.9 Input / output board



Main board Front panel assembly
Earth wire CN865




Joint c
Relay board
CN900
CN901
Fig.10



1-8
MX-J570V/MX-J680V



Removing the Microphone terminal board
assembly (See Fig.11 and 12)

Prior to performing the following procedure, remove
the metal cover, CD changer mechanism assembly
and the front panel assembly.

1. Pull out the MIC volume knob from the front side.

2. Remove the screw K attaching earth wire. then
MIC Volume knob
release the earth wire from the clamp on the upper
part of the cassette mechanism assembly.
Fig.11
3. Remove the two screws L attaching the microphone
terminal board assembly. Microphone
terminal board
M
4. Remove the microphone terminal board assembly assembly
toward you.



Main board
M L
Removing the rolling panel assembly M
(See Fig.12 and 13) L
Prior to performing the following procedure, remove
the microphone terminal boare . M
K
1. Disconnect the harness from connector CN900 and
Relay board Relay board
CN906 on the relay board on the back of the rolling CN900 CN906
panel assembly.
Cassette mechanism
assembly Rolling panel assembly
2. Disconnect the harness from connector CN862, Fig.12
CN863, CN850, CN851 and CN815 on the main
board respectively. Disconnect the card wire from
connector CN880 on the main board.

3. Disconnect the card wire from connector CN869 and CN815
the harness from CN883 and CN884 on the main CN883,CN884 CN869
board respectively. Main board
CN850,CN851

4. Remove the four screws M attaching the rolling Main board
panel assembly. CN862,CN863

5. Remove the rolling panel assembly toward you. Rolling panel
assembly
ATTENTION: For the harness which should be
connected to connector CN869, Main board
CN883 and CN884 on the main board, CN880
get them through the slots under the Relay board
rolling panel when reattaching the CN906
rolling panel assembly to the front Fig.13
panel (Refer to Fig.13)

1-9
MX-J570V/MX-J680V

Removing the main board Main board
N CN867
(See Fig.14 and 15) CN879 N
Prior to performing the following procedure, remove
the front panel assembly, the microphone terminal
board and the rolling panel assembly.

1. Disconnect the harness from connector CN867 on
the main board.

2. Disconnect the card wire from connector CN879 on Rolling panel
assembly
the main board (Before pulling out the card wire,
stand the part d of CN879 as shown in Fig.15). Fig.14

3. Remove the two screws N attaching the main board. d


CN879




Removing the cassette mechanism Fig.15
assembly (See Fig.16)
Prior to performing the following procedure, remove
the front panel assembly.

1. Disconnect the card wire from connector CN306 on
the cassette mechanism board.

2. Remove the eight screws O and P attaching the
cassette mechanism assembly.

3. Pull out the cassette mechanism assembly toward
O O
you.



P CN306 P P P
Cassette mechanism board
Fig.16




1-10
MX-J570V/MX-J680V

Removing the boards in the front panel
assembly (See Fig.17 and 18)
Prior to performing the following procedure, remove
the front panel assembly, the microphone terminal R
board assembly and the rolling panel assembly.
Q
Function Function
Function board1 (See Fig.17) board 2 R Q board 1

1. Remove the two screws Q attaching the function
board 1.


Function board2 (See Fig.17)
Fig.17
1. Remove the two screws R attaching the function
board 2.

Bass-level regulator board (See Fig.18) Eject switch board
Power switch board
1. Pull out the bass-level knob on the front side of the
front panel assembly and remove the nut attaching FW850
FW951
the bass-level regulator board.
Joints f
2. Release the two joints e. Unsolder FW951 on the
bass-level regulator board and disconnect the
S Bass-level
regulator board
harness connected to the power switch board.
Joints e
Main volume & headphone board (See Fig.18)

1. Pull out the volume knob on the front side of the front
panel assembly and remove the nut attaching the
main volume & headphone board.
P

2. Remove the two screws S attaching the main volume Cassette mechanism assembly
& headphone board on the back of the front panel Main volume & headphone board
assembly and release the two joints f.
Fig.18
3. Remove the screw P attaching the earth wire
extending from the main volume & headphone
board.

4. Unsolder FW850 on the main volume & headphone
board and disconnect the harness connected to the
eject switch board.




1-11
MX-J570V/MX-J680V

Power switch board (See Fig.19) Remote control port board
Eject swith U
V T
board Power swith
1. Remove the two screws T attaching the power
board
switch board. Unsolder FW951 on the power switch
board and disconnect the harness extending to the FW850
bass-level regulator board.
FW951
Eject switch board (See Fig.19)
U

1. Remove the four screws U attaching the eject switch
board. Unsolder FW850 on the eject switch board
and disconnect the harness extending to the main
volume & headphone board.

Remote control port board (See Fig.19)

1. Remove the screw V attaching the remote control
port board. Fig.19




Removing the relay board and fixing
board (See Fig.20)


Prior to performing the following procedure, remove
the metal cover,CD changer mechanism assembly CN905 Rolling panel assembly
and the front panel assembly.

There is no need to remove the front panel
assembly.
W
1. Disconnect the harness from connector CN900,
CN901, CN905 and CN906 on the relay board on the CN900
back of the rolling panel assembly. X
CN901 Fixing board
2. Remove the screw W attaching the relay board. Groove g
Remove the relay board from the groove g. Groove h

3. Remove the screw X attaching the fixing board and
remove the fixing board from the groove h.
CN906 Relay board
Fig.20




1-12
MX-J570V/MX-J680V

CN1
Tuner board Rear panel
Joint board
Removing the tuner board
CN871
(See Fig.21 and 22) Plastic rivets
Prior to performing the following procedure, remove
the metal cover and CD changer mechanism CN870
assembly.

1. Remove the two plastic rivets attaching the joint
CN612
board, and remove the joint board.

2. Disconnect the card wire from connector CN1 on the
tuner board.
CN912 CN712 Input / output board
3. Remove the two screws Y attaching the tuner board CN315 Z
on the back of the body. CN711

Fig.21




Removing the input / output board
(See Fig.21 and 22) Rear panel
Prior to performing the following procedure, remove
the metal cover and CD changer mechanism Y
assembly.

1. Remove the two plastic rivets attaching the joint
board, and remove the joint board.

2. Disconnect the card wire from connector CN315 on
the input / output board. G
3. Disconnect the harness from connector CN912 on
the input / output board.
E
4. Remove the screw Z attaching the input / output
board on the lower side of the body.
Fig.22
5. Disconnect connector CN612, CN870, CN871,
CN711 and CN712 on the input / output board and
pulling out them outward. Remove the input / output
board from the body.




1-13
MX-J570V/MX-J680V

Removing the rear cover / rear panel Rear panel
(See Fig.23 to 26)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism
assembly.

There is no need to remove the front panel
assembly.
A
1. Remove the two screws A attaching the rear cover
on the back of the body.

2. Remove the screw E attaching the AUX terminal
board and the rear panel on the back of the body.

3. Remove the screw G attaching the digital output
terminal. Rear cover Fig.23

4. Remove the seven screws B attaching the heat sink
and the pre-amplifier board to the rear panel on the
back of the body.
D

5. Remove the two screws C attaching the voltage CD optical
digital output
selector on the back at the body.
terminal
6. Remove the three screws D attaching the antenna
terminal and the rear panel to the chassis base on G
the back of the body.
B
B
7. Release the two joints i and j on the rear panel C
bottom using a screwdriver, and detach the rear
panel backward. E

B D B
Fig.24




Rear panel
Rear panel



Joint j Joint i
Fig.26 Fig.25




1-14
MX-J570V/MX-J680V

Removing the pre-amplifier board / heat
sink (See Fig.27 to 29)
Relay board
Prior to performing the following procedure, remove Pre-amplifier board CN901
the metal cover, the CD changer mechanism CN713
assembly and the rear cover / rear panel.

There is no need to remove the front panel
assembly.

1. Remove the input / output board (Refer to Fig.21 and
22).

2. Disconnect the harness from connector CN713 on
the pre-amplifier board. Fig.27

3. Remove the two screws E attaching the heat sink to
the power & main amplifier board on the back of the
body.
Pre-amplifier board

4. Remove the two screws F attaching the pre-amplifier
board to the heat sink and detach them with the heat
sink bracket.



Power & main
amplifier board



Heat sink
E
Fig.28



F
Pre-amplifier board




Bracket

Heat sink

Fig.29




1-15
MX-J570V/MX-J680V

Removing the power & main amplifier
board (See Fig.30 and 31) Plastic rivet
G Plastic rivet
Prior to performing the following procedure, remove
the metal cover, the CD changer mechanism
assembly, the front panel assembly, the rear cover /
rear panel, the tuner board, the input / output board
and pre-amplifier board. G
1. Remove the four screws G attaching the transf. on
the power & main amplifier board through the upper
side slots. Power & main
amplifier board
2. Remove the two plastic rivets fixing the power &
main amplifier board.

3. Remove the cord stopper by pushing it upward.
Fig.30 G
4. Cut off the bands k and l fixing the power cord and
unsolder the soldered part on the power & main
amplifier board.

Power & main amplifier board
Soldered part




Band l
Band k
Cord stopper

Fig.31




1-16
MX-J570V/MX-J680V

Multi-control assembly

Removing the multi-control assembly
(See Fig.32 to 34)
Prior to performing the following procedure, remove
the metal cover, CD changer mechanism assembly,
the front panel assembly, the microphone terminal
board assembly, the rolling panel assembly and the
main board.
Fig.32 Multi-control assembly
H
1. Remove the two screws H attaching the multi-control
assembly on both sides.

2. Remove the multi-control assembly outward while
pushing, pull the right and left hooks fixing multi-
control assembly outward respectively.




H Fig.33


Removing the multi-control board
(See Fig.35 to 37)
Prior to performing the following procedure, remove
the multi-control assembly.

1. Remove the four screws I attaching the cover and Hook
the bracket.
Multi-control assembly
2. Pull out the right and left panel holders outward
respectivery by releasing the tabs m outward. Fig.34

3. Remove the cover and the bracket.
I I
4. Remove the four screws J attaching the multi-control
board.
Bracket Bracket




Cover
Fig.35

J
Tab m
Bracket




Panel holder
Multi-control board

Fig.37 Fig.36


1-17
MX-J570V/MX-J680V

Removing the drive motor assembly Rolling panel assembly
(See Fig.38 to 40)
Prior to performing the following procedure, remove
the metal cover, CD changer mechanism assembly,
W
the front panel assembly, the microphone terminal
board assembly, the rolling panel assembly and the
main board. CN900
X
CN901 Fixing board
1. Remove the relay board / fixing board (Refer to
Fig.20). Groove g
Groove h
2. Remove the two screws K attaching the motor
bracket and remove the motor lead staple n.

3. Remove the two screws L attaching the shaft Relay board
bracket. Fig.20

4. Remove the motor belt.

5. Remove the three screws M attaching the side
bracket.

6. Remove the shaft assembly from the rolling panel
assembly by lift up the shaft assembly upward.

7. Remove the drive motor upward. W X
Relay board
Fixing board
Fig.38

L K
Motor bracket




Motor belt




Shaft bracket
Motor lead staple n

Fig.39




Side bracket




M

Drive motor
Shaft assembly
Fig.40 Fig.39
1-18
MX-J570V/MX-J680V

Removing the super VCD control board
(See Fig.41)
Prior to performing the following procedure, remove
the metal cover and the CD changer mechanism CD changer
assembly. mechanism assembly

1. Disconnect the card wire from connector CN101 and CN102
CN101
CN102 on the super VCD control board.

2. Remove the two plastic rivets attaching the super
VCD control board.




Plastic rivet Plastic rivet

Super VCD control board

Fig.42




1-19
MX-J570V/MX-J680V

A
Removing the CD Servo control board
(See Fig.1)
1.Remove the metal cover.
2.Remove the CD changer mechanism assembly. a
3.From bottom side the CD changer mechanism assembly, a
remove the two screws A retaining the CD servo control
board. CN854

4.Absorb the four soldered positions "a" of the right and A
left motors with a soldering absorber. CN651
5.Pull out the earth wire on the CD changer mechanism
CD servo control board
assembly.
6.The two screws B is removed and C.B.holder is detached. CN652
7.Disconnect the connector CN854 on the CD servo CN801 CN151
control board.
8.Disconnect the card wire CN601 and the connector
CN801 on the CD servo control board.
CN601


Removing the CD tray assembly Earth
wire
1. Remove the front panel assembly.
(See Fig.2~4)
B B C.B.Holder
2. Remove the CD changer mechanism assembly.
3. Remove the CD Servo control board. Fig.1
4. Remove the screw C retaining the lod stopper
(Only ver.J/C). Clamper base
5. From the T.bracket section "b" and clamper base
section "c" , remove both of the edges fixing the
rod(See Fig.2 and 3).
6. Remove the screw D retaining the disc stopper
(See Fig.3).
7. Remove the three screws E retaining the T.bracket
(See Fig.3). b
8. Remove the screw F retaining the clamper assembly
(See Fig.3).
9. From the left side face of the chassis assembly, remove Rod
the one screw G retaining both of the return spring and c
lock lever(See Fig. 4). T.Braket
10. By removing the pawl at the section "d" fixing the return
spring, dismount the return spring(See Fig.4). Fig.2
11. Remove the three lock levers(See Fig.4).
T.Braket Disc stopper
d
D

E E
C
a Lod stopper
(Only ver.J/C)
Return spring
E
F
b
G
Lock lever
Fig.4
Clamper ass'y
Fig.3

1-20
MX-J570V/MX-J680V

11. Check whether the lifter unit stopper has been caught Stopper
into the hole at the section "e" of CD tray assembly as
shown in Fig.5.
12. 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.
[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. Manually turn the motor pulley in the clockwise e
direction until the lifter unit stopper is lowered from the
section "e" of CD tray assembly(See Fig.8).
14. Pull out all of the three stages of CD tray assembly in CD tray
the arrow direction "f" until these stages stop assembly
(See Fig.6).
15. 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.

Fig.5

Chassis assembly

f




CD tray assembly


Drive unit of elevator
Fig.7
Refer to Fig.7 Pawl g
Fig.6




CD tray assembly




Pulley gear




Motor pulley

Pawl g , g'
Fig.8 Fig.9



1-21
MX-J570V/MX-J680V

Removing the CD loading mechanism Cams R1, R2 assembly
assembly(See Fig.10)
1. 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. Arrow
2. Remove the four screws H retaining the CD loading h
mechanism assembly.

i
Removing the CD traverse mechanism
(See Fig.11 and 12 )
H
1. For dismounting only the CD traverse mechanism H
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" .
2. By raising the CD loading mechanism assembly in the
arrow direction "l", remove the assembly from the lifter
unit

H H
Cam R1, R2 assembly
CD loading mechanism assembly
Fig.10
CD traverse mechanism
Arrow k


j
Lifter unit
Arrow k




Fig.11


Fig.12
CD Pickup unit


Removing the CD pick unit
(See Fig.13 ) n CD loading
mechanism
1. Move the cam gear in the arrow direction "m" . Then,
the CD pickup unit will be moved in the arrow direction
"n" .
m Shaft
2. According to the above step, shift the CD pickup unit to
the center position.
3. While pressing the stopper retaining the shaft in the Cam gear
arrow direction "o" , pull out the shaft in the arrow Shaft Shaft
direction "p". p
4. After dismounting the shaft from the CD pickup unit,
o
remove the CD pickup unit
Stopper Stopper
Fig.13
1-22
MX-J570V/MX-J680V

Removing the cam unit
(See Fig.14 ~17 )
1. Remove the CD loading mechanism assembly.
2. While turning the cam gear "q", align the pawl "r"
position of the drive unit to the notch position(Fig.16) on
the cam gear "q".
3. Pull out the drive unit and cylinder gear(See Fig.17).
4. While turning the cam gear "q", align the pawl "s"
position of the select lever to the notch position(Fig.18)
on the cam gear "q".
5. Remove the four screws J retaining the cam unit(cam
gear "q" and cams R1/R2 assembly)(See Fig.18).




Drive unit Cam gear q
Chassis assembly



Tray select
switch board
r


CN802
CN801

CN804 I
Fig.14
Fig.15




Drive unit
J Cams R1, R2 assembly
Cam gear q Cam unit
Cylinder gear


J

J

s




Select lever
Fig.16
Fig.17




1-23
MX-J570V/MX-J680V

Removing the actuator motor and belt