JVC UX J60 Service Manual
22029200303
UX-J60
SERVICE MANUAL
MICRO COMPONENT SYSTEM
UX-J60
RM-SUXJ60R REMOTE CONTROL
SP-UXJ60
SP-UXJ60CA-UXJ60
Area Suffix
B -------------------------- U.K.
E ------- Continental Europe
EN --------- Northern Europe
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.22029
2003/03
UX-J60
Important Safety Precautions
1.1 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 manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These 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 reassembling.
(5) Leakage shock hazard testing)
After reassembling 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 ohm 10W resistor
paralleled by a 0.15 µF AC-type capacitor between an
SECTION 1
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 measure the AC voltage across the resistor.
Now, reverse the plug in the AC outlet and repeat each
measurement. Voltage measured any must not exceed 0.75
V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that
these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant
safety standards.
(4) It is essential that safety critical components are replaced
by approved parts.
(5) If mains voltage selector is provided, check setting for local
voltage.
1.3 Caution
Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of preforming repair of this system.
1.4 Critical parts for safety
In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety.
When replacing them, be sure to use the parts of the same type
and rating as specified by the manufacturer. (Except the JC version)
1-2 (No.22029)
1.5 Safety Precautions (U.K only)
(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-
tinued 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.
(2) Any unauthorised design alterations or additions will void the manufacturer's guarantee; furthermore the manufacturer cannot
accept responsibility for personal injury or property damage resulting therefrom.
(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never
be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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.
1.5.1 Warning
(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) If mains voltage selector is provided, check setting for local voltage.
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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.
(No.22029)1-3
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1.6 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.6.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.7 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 replace-
ment procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time
when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.8 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land sections before the flexible wire is disconnected from the connector CN101 on the CD servo board.
(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.
Shorting round
1-4 (No.22029)
Flexible wire
Shorting round
CN601 on
mechanism
board
1.9 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 de feated.
It is dangerous to defeat the safety switches.
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(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 anadjustment or operation check.
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.
REPRODUCTION AND POSITION OF LABELS
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er
ude af funktion. Undgå udsasttelse for stråling.
ADVARSEL
Usynlig laserstråling ved åpning, når sikkerhetsbryteren er avslott. unngå utsettelse for stråling.
Caution label
(No.22029)1-5
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r
A
2.1 Main body
2.1.1 Removing the metal cover
(See Fig.1~3)
(1) Remove the six screws A on the back of the main body.
(2) Remove the two screws B on each side and remove the
metal cover in the direction of the arrow.
SECTION 2
Disassembly method
A
Metal cove
A
B
Fig.2
Fig.1
B
Fig.3
1-6 (No.22029)
2.1.2 Removing the rear cover
r
(See Fig.4)
(1) Remove the two screws C attaching the rear cover.
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C
Rear cove
Fig.4
2.1.3 Removing the rear panel / fan assembly
(See Fig.5, 6)
• Prior to performing the following procedure, remove the metal
cover and the rear cover.
(1) Remove the eleven screws D attaching the rear panel. Re-
lease the two joints a on the rear side and the two joints
b on each side.
(2) Remove the two screws E attaching the fan bracket and
release the two joints c on the rear panel, and remove.
(3) Disconnect the wire from the connector CN916 on the main
board.
DD
a
Rear panel
EE
cc
Fan assembly
D
Main board
CN916
Fig.6
D
b
Fig.5
D
b
(No.22029)1-7
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2.1.4 Removing the tuner board
(See Fig.7)
• Prior to performing the following procedure, remove the metal
cover.
(1) Disconnect the card wire from the connector CN1 on the
tuner board.
(2) Remove the two screws F on the rear side and the screw
G in the side.
2.1.5 Removing the CD-R/RW mechanism assembly
(See Fig.8)
• Prior to performing the following procedure, remove the metal
cover, the rear cover, the rear panel and the tuner board.
(1) Disconnect the card wire from the connector CN903,
CN902 and CN904 on the main board.
(2) Pull the joint d in the direction of the arrow and remove the
CD-R/RW mechanism assembly backward while releasing
the joint e .
G
Tuner board
CN1
Fig.7
CD-R/RW mechanism assembly
F
d
d
Main board
e
CN903
CN904
CN902
Fig.8
1-8 (No.22029)
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2.1.6 Removing the main board / the heat sink board / the
speaker jack board
(See Fig.9~12)
• Prior to performing the following procedure, remove the metal
cover, the rear cover, the rear panel, the tuner board and the
CD-R/RW mechanism assembly.
(1) Remove the two screws H attaching the main board.
(2) Disconnect the card wire from the connector CN900,
CN901, CN930, CN931 and CN932, and disconnect the
flat wire from the connector CN913, CN917 and CN918 on
the main board.
(3) Remove the band and disconnect the flat wire from the
connector CN951 on the power transformer assembly, and
then remove the main board / the heat sink board / the
speaker jack board from the body.
(4) Release the two joints f of the main board and disconnect
the connector CN944 and CN945 of the heat sink board
from the connector CN912 and CN911 of the main board
respectively, and disconnect the flat wire from the connector CN914 and CN915, and remove.
(5) Remove the screw I attaching the speaker jack board and
disconnect the flat wire from the connector CN946 and
CN947 on the heat sink board, and then remove the speaker jack board.
CN912
CN911
CN944
CN915
CN945
Main board
CN914
Heat sink board
CN946
Speaker jack board
Fig.11
CN947
I
f
CN930
CN913
CN931
Fig.9
Main board
CN932
CN901
H
CN900
CN917
CN918
Band
Speaker jack board
Fig.12
Power transformer assembly
CN951
Fig.10
(No.22029)1-9
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2.1.7 Removing the power transformer assembly
(See Fig.13)
• Prior to performing the following procedure, remove the metal
cover, the rear cover, the rear panel, the CD-R/RW mechanism assembly and the main board.
(1) Disconnect the power cord from the connector J1000 on
the power transformer assembly.
(2) Remove the four screws J .
JJ
2.1.8 Removing the front panel assembly
(See Fig.14,15)
• Prior to performing the following procedure, remove the metal
cover.
(1) Remove the two screws K on each side. Release the two
joints g on the both sides and lift the front panel assembly
to release the joint h .
(2) Disconnect the card wire from the connector CN900,
CN901, CN930, CN931 and CN932 on the main board.
Front panel assembly
Powe transformer assembly
J1000
Fig.13
h
Main board
CN932CN931 CN930
g
1-10 (No.22029)
K
Fig.14
CN900
CN901
Fig.15
g
K
Front panel assembly
2.1.9 Removing the phones board
(See Fig.16)
• Prior to performing procedure, remove the metal cover and the
front panel assembly.
(1) Disconnect the flat wire from the connector CN913 on the
main board.
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Mian board
CN913
2.1.10 Removing the cassette mechanism assembly
(See Fig.17)
• Prior to performing the following procedure, remove the metal
cover and the front panel assembly.
(1) Remove the four screws L attaching the cassette mecha-
nism assembly.
Phones board
Fig.16
L
Cassette mechanism assembly
Fig.17
L
(No.22029)1-11
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2.1.11 Removing the switch board
(See Fig.18,19)
• Prior to performing the following procedure, remove the metal
cover and the front panel assembly.
(1) Remove the four screws M attaching the switch board.
(2) Move the switch board in the direction of the arrow to dis-
connect the wire from the connector CN762 and the card
wire from the connector CN761.
2.1.12 Remove the LCD board assembly
(See Fig.18)
• Prior to performing the following procedure, remove the metal
cover and the front panel assembly.
(1) Remove the four screws N attaching the LCD board as-
sembly.
M
Switch board
CN762 CN761
LCD board assembly
NN
M
Switch board
Fig.18
Fig.19
1-12 (No.22029)
2.1.13 Removing the control panel assembly
(See Fig.20,21)
• Prior to performing the following procedure, remove the metal
cover, the front assembly, the switch board and the LCD board
assembly.
(1) Remove the three screws O attaching the control panel as-
sembly.
(2) Release the three joints i and open the cassette door
while pressing the cassette door, and then remove the control panel assembly in the direction of the arrow.
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O
O
Fig.20
i
Cotrol panel assembly
Fig.21
(No.22029)1-13
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2.1.14 Remiving the control board
(See Fig.22,23)
• Prior to performing the following procedure, remove the metal
cover, the front panel assembly, the switch board, the LCD
board assembly and the control panel assembly.
(1) Pull out the volume knob.
(2) Remove the seven screws P attaching the control board.
Control panel assembly
Volume knob
Fig.22
Control panel assembly
P
Control board
P
P
Fig.23
1-14 (No.22029)
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