Jvc UX-G950, UX-G650 Service Manual
SERVICE MANUAL
MB682<Rev.001>20088SERVICE MANUAL
UX-G950VB, UX-G950VE, UX-G950VEN,
UX-G950VEV, UX-G950VEE, UX-G650B,
UX-G650E, UX-G650EN, UX-G650EV
MICRO COMPONENT SYSTEM
UX-G950V
SUPER VIDEO
UX-G950VB / UX-G950VE
UX-G950VEE / UX-G950VEV
UX-G950VEE
SP-UXG950V SP-UXG950VCA-UXG950V
UX-G650
SUPER VIDEO
CA-UXG650
SP-UXG650
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)
SP-UXG650
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
COPYRIGHT © 2008 Victor Company of Japan, Limited
No.MB682<Rev.001>
2008/8
SPECIFICATION
UX-G950V
Amplifier section - CA-UXG950V
Output Power 160 W (80 W + 80 W) at 6 Ω (10% THD)
Audio Input AUDIO IN Stereo min. (
500 mV/47 kΩ (at “IN_LVL1”)
250 mV/47 kΩ (at “IN_LVL2”)
125 mV/47 kΩ (at “IN_LVL3”)
Audio input/output AV-Scart Input: TV Sound only
SUBWOOFER OUT 500 mV/10 kΩ
Digital output OPTICAL DIGITAL OUT -21 dBm to -15 dBm (660 nm ±30 nm)
Digital input USB MEMORY REC/PLAY
AV (SCART) Color system PAL (interlaced/progressive)
Composite video 1 V(p-p)/75 Ω
S-VIDEO Y (luminance) 1 V(p-p)/75 Ω
C (chrominance, burst) 0.3 V(p-p)/75 Ω
RGB 0.7 V(p-p)/75 Ω
VIDEO OUT
(COMPONENT)
Speaker impedance 6 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/
(Y) 1 V(p-p)/75 Ω
(PB/PR) 0.7 V(p-p)/75 Ω
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/DVD Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
• +R/+RW (DV D Video/MP3/WMA/WAV/JPEG/MPEG-1/MPEG-2/DivX format)
• DVD-ROM (MP3/WMA/WAV format)
Dynamic range 80 dB
Horizontal resolution 500 lines
Wow and flutter Immeasurable
USB section
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
General
Power requirements AC 230 V~, 50 Hz
Power consumption 155 W (at operation)
18 W (at standby)
1 W or less (at ECO mode)
Dimensions (approx.) 166 mm × 252 mm × 304 mm (W/H/D)
Mass (approx.) 5.4 kg
Ø 3.5 mm)
1-2 (No.MB682<Rev.001>)
Speakers - SP-UXG950V
Speaker units Tweeter 4 cm cone x 1
Woofer 12 cm cone x 1
Impedance 6 Ω
Dimensions (approx.) 160 mm × 250 mm × 179 mm (W/H/D)
Mass (approx.) 2.2 kg each
Specifications and appearance are subject to change without prior notice.
UX-G650
Amplifier section
OUTPUT POWER 120 W (60 W + 60 W) at 6 Ω (10% THD)
Speakers/Impedance 6 Ω - 16 Ω
Audio input AUDIO IN 500 mV/47 kΩ (at “IN LVL1”)
250 mV/47 kΩ (at “IN LVL2”)
125 mV/47 kΩ (at “IN LVL3”)
Digital input USB MEMORY REC/PLAY
Tuner section
FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 522 kHz - 1629 kHz
Disc player section
Dynamic range 88 dB
Signal-to-noise ratio 85 dB
Wow and flutter Immeasurable
USB storage
USB specification Compatible with USB 2.0 Full Speed
Compatible device Mass storage class
Compatible file system FAT16, FAT32
Bus power supply Max. 500 mA
Speakers
Speaker units 4 cm cone x 1
12 cm cone x 1
Impedance
Dimensions (approx.) 160 mm x 250 mm x 179 mm (W/H/D)
Mass (approx.) 2.2 kg each
General
Power requirements AC 230 V~, 50 Hz
Power supply to USB mass storage class device DC 5 V=500 mA
Power consumption 130 W (power on)
16 W (standby mode)
1 W or less (EC O Mode)
Dimensions (W x H x D) 166 mm x 252 mm x 304 mm
Mass 4.9 kg
Specifications and appearance are subject to change without prior notice.
(No.MB682<Rev.001>)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits an d compo nents spec ially f or saf ety purpos es. 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 respons ibility for p ersonal injury or p roperty
damage resulting therefro m.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteristics are often not eviden t from visu al inspec tion nor ca n the
protection afforded by the m necessaril y be obtained by using replacement compo nents rated for higher vo ltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in the Parts Lis t of Se rvice Manual. Electrical components having such features
are identified by shadin g on the schema tics and by ( ) on
the Parts List in the Servic e Manual. The use of a s ubstitute
replacement whic h d oe s not ha ve the same safety c ha rac teristics 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, barri ers and the l ik e to b e se para ted 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, co ntrol shaf ts, etc.) to be sure t he prod uct
is safe to operate w ithou t dange r of el ectric al sh ock.Do not
use a line isolation transformer during this check.
• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tes t er" , me as ure t he l eak ag e current
from each exposed metal pa rts of the cabine t, particula rly any exposed metal part having a return path to the
chassis, to a know n good earth ground. Any le akage 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 mann er. C o nne ct a 1,50 0Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor betw een 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 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 essen tial that sa fety critic al com ponen ts ar e repl aced
by approved parts.
(5) If mains voltage selector is pro vided, ch eck set ting for loc al
voltage.
1.3 Caution
Burrs formed during molding ma y 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 di agra ms , 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.MB682<Rev.001>)
1.5 Preventing static electricity
Electrostatic discharge (ESD), w hi ch occurs w hen sta tic ele ct ricit y sto red i n the bod y, fa bric , etc. is discharged, ca n de stroy 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 che ck the con dition of th e laser dio de in the opt ical pick up. The tes ter's inte rnal power so urce can ea sily
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 nip pers, etc. afte r replacing th e optical pi ckup. For speci fic details, refe r to the
replacement procedure in th e t ext . R em ove the anti-static pin w he n re pla cing the traverse unit. Be c arefu l not to tak e to o l on g 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.MB682<Rev.001>)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.MB682<Rev.001>)
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-G950VE)
3.1.1 Removing the Metal cover (See Fig.1, 2)
(1) Remove the two screws A attaching the Heat sink cover.
(See Fig.1)
(2) Remove the five screws B attaching the Metal cover. (See
Fig.1)
(3) Remove the two screws C attaching the both side of Metal
cover. (See Fig.2)
B
B
B
A
B
B
Fig.1
C
Fig.2
(No.MB682<Rev.001>)1-7
3.1.2 Removing the Front panel (see Fig.3 to 5)
(1) Disconnect the card wire from Front panel connected to
connector CN330
(2) Remove the two screws D attaching the both side of Front
panel. (See Fig.4)
(3) Disengage two hooks a engaged Front panel. (See Fig.4)
(4) Remove the two screws E attaching the Front panel. (See
Fig.5)
(5) Disengage one hook b engaged Front panel. (See Fig.5)
of the Micom board. (See fig.3)
D
CN330
Fig.3
3.1.3 Removing the Tuner pack (See Fig.6, 7)
(1) Disconnect the card wire from Tuner pack connected to
connector CN338
(2) Remove the two screws F attaching the Tuner pack. (See
Fig.7)
CN338
of the Micom board. (See Fig.6)
hook
a
Fig.4
EE
hook
Fig.5
b
1-8 (No.MB682<Rev.001>)
F
Fig.7
Fig.6
3.1.4 Removing the Amp board (See Fig.8 to 10)
(1) Disconnect the Connector wire from Front jack board con-
nected to connector CN201
(2) Disconnect the card wire from Micom board connected to
connector CN204
(3) Disconnect the flat wires connected to connectors CN207
and CN208 of the Amp board. (See Fig.8)
(4) Disconnect the card wire from Micom board connected to
connector CN205
(5) Disconnect the card wire from DVD me chani sm c onnec ted
to connector CN213
(6) Disconnect the flat wire from Front jack board co nnected to
connector CN203 of the Amp board. (See Fig.8)
(7) Disconnect the connector wire from Power transformer
connected to connector CN209
Fig.8)
(8) Disconnect the flat wire s from Power board connected to
connectors CN210
(See Fig.8)
(9) Disconnect the connector wir e from FA N connected to con-
nector CN206
(10) Remove the two screws G attaching the Amp board. (See
Fig.8)
(11) Remove the two screws H attaching the H eat sink bra cket.
(See Fig.9)
(12) Remove the one screw J attaching the Amp board. (See
Fig.9)
(13) Remove the two screws K attaching the Speaker terminal.
(See Fig.10)
of the Amp board. (See Fig.8)
of the Amp board. (See Fig.8)
, CN211 and CN212 of the Amp board.
of the Amp board. (See Fig.8)
CN204 CN203
of the Amp bo ard. (See F ig.8)
of the Amp board. (See Fig.8)
of the Amp board. (See
H
J
Fig.9
CN201
CN213
GG
CN209
CN212
CN208
CN207
CN205
Fig.8
CN211
CN210
CN206
K
Fig.10
(No.MB682<Rev.001>)1-9
3.1.5 Removing the Rear panel (See Fig.11)
(1) Remove the seven screws L attaching the Rear panel.
3.1.6 Removing the DVD mechanism (See Fig.12, 13)
(1) Disconnect the connector wire from Front jack board con-
nected to connect or CN811
Fig.12)
(2) Disconnect the card wires connected to connectors
, CN353 and CN361 of the Micom board. (See
CN345
Fig.13)
of the Front end board. (See
L
L
Fig.11
CN811
Fig.12
Fig.13
CN345
CN353
CN361
1-10 (No.MB682<Rev.001>)
3.1.7 Removing the Micom board (See Fig.14)
(1) Remove the two screws M attaching the Micom board.
3.1.8 Removing the Front jack board (See Fig.15)
(1) Remove the three screws N attaching the Front jack board.
3.1.9 Removing the Power board (See Fig.16)
(1) Disconnect the connector wires from Power transformer
connected to connect ors CN800
Power board.
(2) Remove the two screws P attaching the power board.
, CN804 and CN805 of the
M
Fig.14
N
Fig.15
CN805 CN804
3.1.10 Removing the FL board (See Fig.17)
(1) Disengage four hooks c engaged FL board.
CN800
Fig.16
hook
hook
Fig.17
P
c
c
(No.MB682<Rev.001>)1-11
3.1.11 Removing the Function board (See Fig.18)
(1) Remove the Volume knob.
(2) Remove the nine screws Q attaching the Function board.
Q
Q
Fig.18
1-12 (No.MB682<Rev.001>)
3.2 DVD mechanism
3.2.1 Removing the traverse mechanism
(See Fig.1 to 6)
(1) Remove the two screws A attaching the tr amecha ho lder
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 i s disconnected w ithout 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
DVD module board
Fig.2
(No.MB682<Rev.001>)1-13
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
1-14 (No.MB682<Rev.001>)
3.2.2 Removing the pickup assembly
(See Fig.7 to 11)
(1) Remove the two rod springs pressing the guide s haft. (See
Fig.7)
(2) Remove the screw E and F attaching the spring holde r.
(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
Fig.9
(No.MB682<Rev.001>)1-15
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
1-16 (No.MB682<Rev.001>)
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 assem bly, boss of lo ading su b asse mbly
should atta ch to guide of bottom si de at tray as sembly. (Se e
Fig.15)
J
order 1
order 2
clamper base
L
K
Fig.15
[bottom side]
Fig.14
(No.MB682<Rev.001>)1-17
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