Jvc UX-G500 Service Manual
SERVICE MANUAL
MICRO COMPONENT SYSTEM
MB674<Rev.003>200810SERVICE MANUAL
UX-G500VUS, UX-G500VUB, UX-G500VUW,
UX-G500VUX, UX-G500VUG, UX-G500VUN,
UX-G500VB, UX-G500VE, UX-G500VEN,
UX-G500VEV, UX-G500VEE, UX-G500VA,
UX-G500VUF, UX-G500VUP,
UX-G500VUT, UX-G500VUH
SUPER VIDEO
For europe except EV version
COPYRIGHT © 2008 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
For asia and EV version
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
COPYRIGHT © 2008 Victor Company of Japan, Limited
No.MB674<Rev.003>
2008/10
SPECIFICATION
UX-G500VB/E/EN/EV/EE
Amplifier section
Output Power 60 W (30 W + 30 W) at 4 Ω (10% THD)
Audio Input
Audio input/output AV-Scart Input: TV Sound only
Digital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm±30 nm)
Digital input USB MEMORY
AV (SCART) Color system PAL (interlaced/progressive)
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
RGB 0.7 V(p-p)/75 Ω
VIDEO OUT
(COMPONENT)
Speaker impedance 4 Ω - 16 Ω
FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 522 kHz - 1 629 kHz
Playable disc DVD Video/CD/VCD/SVCD/
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
Playable files MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format
USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible system FAT16, FAT32
Bus power supply DC 5 V 500 mA
Power requirements AC 230 V~, 50 Hz
Power consumption 35 W (at operation)
Dimensions (approx.) 175 mm x 251 mm x 247 mm(W/H/D)
Mass (approx.) 2.6 kg
Speaker units Tweeter 1.5 cm dome x 1
Impedance 4 Ω
Dimensions (approx.) 160 mm x 250 mm x 169 mm(W/H/D)
Mass (approx.) 1.8 kg each
AUDIO IN: Stereo min. (Ø 3.5 mm)
Composite video 1 V(p-p)/75 Ω
C (chrominance, burst) 0.3 V(p-p)/75 Ω
(Y) 1 V(p-p)/75 Ω
(PB/PR) 0.7 V(p-p)/75 Ω
Woofer 10 cm cone x 1
500 mV/50 kΩ (at“IN_LVL1”)
250 mV/50 kΩ (at “IN_LVL2”)
125 mV/50 kΩ (at”IN_LVL3”)
Tuner section
Disc player section
CD-R/CD-RW(CD/SVCD/VCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
DVD-R/-RW(DVD-VR/DVDVideo/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivXformat)
+R/+RW(DVDVideo/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
USB section
General
8 W (at standby)
1 W or less (at ECO mode)
Speakers
1-2 (No.MB674<Rev.003>)
UX-G500VUS/UB/UN/UG/UX/A/UH/UW/UF/UP/UT
Amplifier section-CA-UXG500V
Output power 60 W (30 W + 30 W) at 4 Ω (10% THD)
Audio input AUDIO IN: Stereo min. (Ø 3.5 mm) 500 mV/50 kΩ (at “IN_LVL1”)
250 mV/50 kΩ (at ”IN_LVL2”)
125 mV/50 kΩ (at ”IN_LVL3”)
Audio output SUBWOOFER OUT 500 mV/10 kΩ
Digital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm ±30 nm)
Digital input USB MEMORY
Video out Color system NTSC/PAL (interlaced/progressive)
Composite video 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C
(chrominance burst)
VIDEO OUT
(COMPONENT)
Speaker impedance 4 Ω - 16 Ω
FM tuning range 87.50 MHz - 108.00 MHz
AM (MW)
tuning range
Region codes Middle East 2
Playable disc DVD Video/CD/VCD/SVCD
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
Playable files MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format
USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible system FAT16, FAT32
Bus power supply DC 5 V=500 mA
Power requirements AC 110 V - 240 V , 50/60 Hz
Power consumption 35 W (at operation)
Dimensions (approx.) 175 mm × 251 mm × 247 mm (W/H/D)
Mass (approx.) 2.6 kg
Speaker units Tweeter 1.5 cm dome x 1
Impedance 4 Ω
Dimensions (approx.) 160 mm × 250 mm × 169 mm (W/H/D)
Mass (approx.) 1.8 kg each
For Saudi Arabia 531 kHz - 1 602 kHz (at 9 kHz intervals)
For other countries 531 kHz - 1 710 kHz (at 9 kHz intervals)
For Australia AC 240 V~ , 50 Hz
For Hong Kong region and Thailand AC 220 V~ , 50 Hz
Woofer 10 cm cone x 1
(Y) 1 V(p-p)/75 Ω
(PB/PR) 0.7 V(p-p)/75 Ω
PAL: 0.3 V(p-p)/75 Ω
NTSC: 0.286 V(p-p)/75 Ω
Tuner section
530 kHz - 1 600 kHz (at 10 kHz intervals)
530 kHz - 1 710 kHz (at 10 kHz intervals)
Disc player section
South East Asia, Hong Kong region: 3
Central and South America, Australia: 4
CD-R/CD-RW(CD/SVCD/VCD/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
DVD-R/-RW(DVD-VR/DVD Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
+R/+RW(DVD Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
USB section
General
8 W (at standby)
1 W or less (at ECO mode)
Speakers-SP-UXG500V
Design and specifications are subject to change without notice.
(No.MB674<Rev.003>)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety 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, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-
posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
0.15 F AC TYPE
Place this
probe on
1500 10W
Good earth ground
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.
(This regulation dose not Except the J and C version)
each exposed
metal part.
1-4 (No.MB674<Rev.003>)
1.5 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
1M
Conductive material
(conductive sheet) or iron palate
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.6 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a
time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the card wire is disconnected from the connecto on the servo board. (If the card wire
is disconnected without applying solder, the pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the card wire.
Solder short land section
(No.MB674<Rev.003>)1-5
1.8 Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
!
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
REPRODUCTION AND POSITION OF LABELS and PRINT
WARNING LABEL and PRINT
1-6 (No.MB674<Rev.003>)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
3.1 Main body (Used figure are UX-G500V)
3.1.1 Removing the Metal Cover (See Fig.1,2)
(1) Remove the seven screws A attaching the Metal cover.
(See Fig.1)
(2) Remove the two screws B attaching the both side of the
Metal cover. (See Fig.2)
AA
Fig.1
B
Fig.2
(No.MB674<Rev.003>)1-7
3.1.2 Removing the Tuner pack (See Fig.3, 4)
(1) Disconnect the card wire from Tuner pack connected to
connector CN306
(2) Remove the two screws C attaching the Tuner pack. (See
Fig.4)
of the Micom board. (See Fig.3)
CN306
Fig.3
C
3.1.3 Removing the Rear panel (See Fig.5)
(1) Remove the five screws D attaching the Rear panel.
Fig.4
D
Fig.5
1-8 (No.MB674<Rev.003>)
3.1.4 Removing the Amp board (See Fig.6)
(1) Disconnect the connector wire from Power board connect-
ed to connector CN640
(2) Disconnect the card wire from Amp board connected to
connector CN520
(3) Remove the one screw E attaching the Amp board.
3.1.5 Removing the DVD mechanism (See Fig.7 to 8)
(1) Disconnect the card wire from DVD mechanism connected
to connector CN360
(See Fig.7)
(2) Disconnect the connector wire from DVD mechanism con-
nected to connector CN811
Fig.7)
(3) Disconnect the card wire from DVD mechanism connected
to connector CN205
(4) Disconnect the card wire from DVD mechanism connected
to connector CN510 of the Micom board. (See Fig.7)
(5) Remove the two screws F attaching the DVD mechanism.
(See Fig.8)
of the Amp board.
of the Micom board.
and CN361 of the Connection board.
of the Connection board. (See
of the Power board. (See Fig.7)
CN520
E
CN640
Fig.6
CN205 CN361 CN360CN811 CN510
Fig.7
Fig.8
F
(No.MB674<Rev.003>)1-9
3.1.6 Removing the Mecha chassis (See Fig.9, 10)
(1) Remove the two screws G attaching the both side of the
Front panel. (See Fig.9)
(2) Disconnect the card wire from Connection board connect-
ed to connector CN310
of the Micom board. (See Fig.10)
G
Fig.9
CN310
Fig.10
1-10 (No.MB674<Rev.003>)
3.1.7 Removing the Front panel (See Fig.11 to 13)
(1) Disconnect the card wire from FL board connected to con-
nector CN304
(2) Disconnect the card wire from Volume board connected to
connector CN303
(3) Remove the one screw J attaching the Volume board. (See
Fig.11)
(4) Remove the two screws H attaching the Front panel. (See
Fig.12)
(5) Disengage two hooks a engaged both side of the Front
panel. (See Fig.12)
(6) Disengage one hook b engaged bottom side of the Front
panel. (See Fig.13)
of the Micom board. (See Fig.11)
of the Micom board. (See Fig.11)
CN303
CN304
J
H
Fig.11
hook b
Fig.12
hook
a
Fig.13
(No.MB674<Rev.003>)1-11
3.1.8 Removing the Micom board (See Fig.14, 15)
(1) Remove the two screws K attaching the Micom board.
(See Fig.14)
(2) Disconnect the flat cable wire from Micom board connected
to connector CN201
Fig.15)
(3) Disconnect the board to board connector connected to
connector CN204
(4) Disconnect the board to board connector connected to
connector CN803 of the USB jack board. (See Fig.15)
and CN203 of the Power board. (See
of the Power board. (See Fig.15)
K
Fig.14
CN201
CN803 CN203 CN204
Fig.15
1-12 (No.MB674<Rev.003>)
3.1.9 Removing the USB jack board (See Fig.16)
(1) Remove the three screws L attaching the USB jack board.
3.1.10 Removing the Power board (See Fig.16)
(1) Disconnect the power cord connected to connector CN200
of the Power board.
(2) Remove the four screws M attaching the Power board.
L
3.1.11 Removing the FL board (See Fig.17)
(1) Remove the six screws N attaching the FL board.
3.1.12 Removing the Volume board (See Fig.17)
(1) Remove the volume knob.
(2) Remove the eight screws P attaching the Volume board.
N
P
CN200
Fig.16
MM
N
P
Fig.17
(No.MB674<Rev.003>)1-13
3.2 DVD mechanism
3.2.1 Removing the traverse mechanism
(See Fig.1 to 6)
(1) Remove the two screws A attaching the tramecha holder
from top side of DVD mechanism assembly. (See Fig.1)
(2) Remove the two screws B attaching the DVD module
board. (See Fig.2)
(3) Remove the four screws C attaching the CB holder and
take out it. (See Fig.3)
(4) Remove the four screws D attaching the traverse mecha-
nism. (See Fig.4)
(5) Solder the solder part of DVD pick up. (See Fig.5)
(6) Disconnect the card wire from CN101
DVD module board. (See Fig. 6)
Caution:
• Solder the short land section on the DVD pickup before dis-
connecting the card wire from the connector on the DVD
pickup. If the card wire is disconnected without attaching solders, the pickup may be destroyed by static electricity.
• When attaching the DVD pickup, be sure to remove solders
from the short land section after connecting the card wire to
the connector on the DVD pickup.
and CN201 on the
A
Clamper base
B
A
DVD mechanism assembly
Fig.1
DVD mechanism assembly
B
1-14 (No.MB674<Rev.003>)
DVD module board
Fig.2
DVD module board
Solder short land section
Fig.5
C
C
CC
Fig.3
DVD mechanism assembly
Traverse mechanism assembly
DVD module board
CN101
CN201
Fig.6
DD
Fig.4
(No.MB674<Rev.003>)1-15
3.2.2 Removing the pickup assembly
(See Fig.7 to 11)
(1) Remove the two rod springs pressing the guide shaft. (See
Fig.7)
(2) Remove the screw E and F attaching the spring holder.
(See Fig.8)
(3) Remove the read screw from traverse mechanism assem-
bly. (See Fig.9)
Caution:
When remove the lead screw, do not loss the middle
gear. (See Fig.10 and 11)
(4) Remove the bar spring pressing the shaft. (See Fig.10)
(5) Take out the pickup assembly from traverse mechanism
chassis by order. (See Fig.11)
(SHAFT)
(T.TABLE)
HOOK
(BAR SPRING)
Fig.10
ROD SPRING ROD SPRING
Fig.7
Spring holder
Fig.8
order 2
order 3
order 1
Fig.11
EF
Middle gear
Lead screw
1-16 (No.MB674<Rev.003>)
Fig.9
3.2.3 Removing the feed motor assembly
(See Fig.12)
(1) Remove the one screw G attaching the feed motor assem-
bly.
(2) Remove the feed motor wires from solder part of spindle
motor board.
Solder part
3.2.4 Removing the spindle motor assembly
(See Fig.13)
(1) Remove the three screws H attaching the spindle motor
from spindle motor board.
Middle gear
Lead screw
Fig.12
H
Spindle motor
Fig.13
G
(No.MB674<Rev.003>)1-17
3.2.5 Removing the tray assembly
(See Fig.14 & 15)
(1) Remove the two screws J attaching the clamper base.
(See Fig.14)
(2) Remove the one screw K attaching the shaft guide from
bottom side. (See Fig.14)
(3) Remove the two screws L attaching the shaft guide from
top side. (See Fig.15)
Caution:
When attach the tray assembly, boss of loading sub assembly
should attach to guide of bottom side at tray assembly. (See
Fig.15)
J
order 1
order 2
clamper base
L
K
Fig.15
[bottom side]
Fig.14
1-18 (No.MB674<Rev.003>)
SECTION 4
ADJUSTMENT
4.1 DVD test mode
(1) Press "DVD/CD" key + "STOP" key on panel, then AC in.
(2) FL display "T xxx xx"
(3) Press "MENU/PL" key repeatedly, until FL display
"CHECK"
(4) Press number key on Remote control "1-10,0 and >=10"
Key 1 : "PLAYBACK"
Key 2 : "WOBBLE"
Key 3 : "TNO-1 SR"
Key 4 : "CDLD LSR"
Key 5 : "DVDLD LSR"
Key 6 : "JITX1"
Key 7 : "EEP BWD"
Key 8 : "EEPFWD"
Key 9 : "TEMP"
4.2 SYSTEM micom test mode
(1) In DVD/CD mode, press
"SET" key + "9" key + "POWER" key repeatedly
System micom version
G500V : "
32846 00" (1st issued)
DVD/CD micom version
"DVD 0258"
(FL ALL DISPLAY)
Set destiunation
eg: "V_U1_9K"
Model name
eg: "G500V"
Key 10 : "DVD-LD"
Key 0 : "MONITOR"
Key >10 : "INIT"
4.3 GENERAL
KEY INDICATION FUNCTION
SET + "10" + POWER COLD COLD START
(Initialization of set)
SET + "1" + POWER 00000:00 -> TMP 0000 ->
L.DET 00 -> V.DROP 0
SET + "4" + POWER VOLUME20 -> VOL MAX Volume level to max by compulsion
SET + "9" + POWER Refer SYSCON TEST Refer SYSCON TEST
(FL ALL DISPLAY) FL all displaySET + ">10" + POWER
Total DVD/CD mode play time by Hour:Minutes ->
Mecha temperature data ->
Speaker level detect over trigger level by percentage, % ->
Volume level drop, 1, 2 then 3, each -2db
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB674<Rev.003>)1-19
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