JVC UX-V30 Service Manual
SERVICE MANUAL
MICRO COMPONENT SYSTEM
UX-V30
AUTO TAPE SELECT OR
TAPE
AUTO REVERSE
UX-V30
UX-V30
REMOTE CONTROL RM-RXUV5R
DIMMER SLEEP
DISPLAY FM MODE MD/AUX
AUTO
AHB PRO
PRESET
PROGRAM RANDOM REPEAT
BASS TREBLE CANCEL
UP
SET
DOWN
TUNER
TAP E
BAND
VOLUME
COMPACT
DIGITAL AUDIO
VERTICAL DISC
STANDBY/ON
PHONES
MICRO COMPONENT SYSTEM
MD/
AUX
REC
REV.
MODE
TAPE FM/AM CD
DOWN UPMULTI CONTROL
LOADING MECHANISM
UX-V30
AHB
PRO
VOLUME
TIMER
CLOCK
CD
OPEN/CLOSE
CD
CD
Area Suffix
UF
China
Contents
Safety precautions
Important for laser products
Disassembly method
Main adjustment
Flow of functional operation
until TOC read
This service manual is printed on 100% recycled paper.
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
1-2
1-3
1-4
1-14
1-18
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-19
1-19
1-20
No.20888
Dec. 2000
1-1
UX-V30
1. This design of this product contains special hardware and many circuits and components specially
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of
3. Many electrical and mechanical par ts in the products have special safety-related characteristics.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the
Safety Precautions
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.
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 proper ty
damage resulting therefrom.
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.
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 or iginal 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 eachexposed metal
part, par ticularly 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.
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
!
1-2
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.
Important for laser products
UX-V30
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
laserradiation and is equipped with safety switches
whichprevent 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.
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
1-3
UX-V30
Disassembly method
<Main body>
Removing the rear cover
(See Fig.1 and 2)
1.
Remove the eight screws A attaching the rear cover
on the back of the body.
2.
Remove the two screws B attaching the rear cover
on the bottom of the body.
3.
Unlock the speaker terminal and the antenna
terminal, then remove the rear cover backward with
releasing the hooks.
Removing the side panels
(See Fig.3 and 4)
Prior to performing the following procedure, remove
the rear cover.
A
A
A
A
A
Rear cover
Fig.1
B
Rear cover
1.
Move the side panels in the direction of the arrow
and remove them backward.
Side panel (R)
B
Fig.2
Side panel (L)
1-4
Fig.3Fig.4
UX-V30
Removing the cassette mechanism
assembly (See Fig.5 and 6)
Prior to performing the following procedure, remove
the rear cover and the side panels.
1.
Disconnect the card wires from connector CN304
and CN305 on the main board on the left side of the
body.
2.
Disconnect the harness from connector CN309 on
the Opt, Dig.out board on the right side of the body.
Cut off the band fixing the harness.
3.
Remove the two screws C attaching the cassette
mechanism assembly on both sides of the body and
release the two joints a.
4.
Remove the cassette mechanism assembly in the
direction of the arrow.
Cassette mechanism assembly
Main board
Fig.5
Cassette mechanism assembly
Joint a
C
Joint a
C
CN304
CN305
Opt, Dig.out board
Band
CN309
Removing the main board / the heat sink
(See Fig.7 to 9)
Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.
1.
Disconnect the card wire from connector CN303 and
the harness from CN306 and CN307 on the main
board respectively.
2.
Disconnect the harness from connector CN902 on
the power transformer.
3.
Remove the screw E attaching the main board on
the right side of the body.
4.
Remove the screw F and the two screws G
attaching the heat sink on the back of the body.
ATTENTION:
5.
Disconnect connector CN301 and CN302 on the
main board from the main body. Remove the main
board upward by releasing the two joints b in the
lower part of the main board.
The heat sink can be removed even if
the main board is attached to the body.
CN303
Fig.6
Transformer board
CN902
CN307
Main board
Heat sink
CN306
Fig.7
Main board
CN302
Joint b
E
CN301
Joint b
Fig.8
1-5
UX-V30
Removing the front panel assembly
(See Fig.10 to 12)
Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly and the main board.
1.
Disconnect the card wire from connector CN732 on
the LCD board.
2.
Remove the two screws D attaching the front panel
assembly on the bottom of the body.
F
Front panel assembly
G
Heat sink
Main board
G
Fig.9
Tuner & function board
3.
Release the two joints c on the lower right and left
sides of the body. Pull out the front panel assembly
toward the front.
Removing the head phone board
(See Fig.13)
Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly, the main board and the front
panel assembly.
1.
Remove the plastic rivet attaching the head phone
board and release the joint d.
Joint c
Front panel assembly
D
D
LCD board
Fig.10
Fig.11
CN732
Front panel assembly
1-6
Plastic rivet
Joint d
Fig.12Fig.13
Joint c
Removing the tuner & function board
(See Fig.14)
Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.
1.
Disconnect the card wire from connector CN1 on the
tuner & function board.
2.
Remove the screw H attaching the tuner & function
board.
UX-V30
3.
Release the two joints e and the joint f of the tuner &
function board.
Removing the power transformer
(See Fig.15)
Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.
1.
Disconnect the harness from connector CN902 on
the power transformer.
2.
Disconnect the harness from connector CN901 on
the AC supply board.
3.
Remove the four screws I attaching the power
transformer.
CN1
Main board
CN902
I
H
J
Joint e
Heat sink
Tuner
& function board
Joint f
Fig.14
AC supply board
J
CN901
I
Removing the AC supply board
(See Fig.15)
*Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.
1.
Disconnect the harness from connector CN901 on
the AC supply board.
2.
Remove the screw F attaching the heat sink on the
back of the body (Refer to Fig.9).
3.
Remove the two screws J attaching the AC supply
board.
ATTENTION:
To remove the AC supply board
efficiently, remove the main board in
advance.
Power transformer board
Fig.15
1-7
UX-V30
<Cassette mechanism assembly>
Prior to performing the following procedure, remove
the rear cover, the side panels and the cassette
mechanism assembly.
Cassette door
Removing the Opt.Dig.out board
(See Fig.16)
1.
Remove the two screws K attaching the Opt.Dig.out
board on the side of the cassette mechanism
assembly.
Removing the cassette mechanism
assembly (See Fig.16 and 17)
Prior to performing the following procedure, remove
the Opt.Dig.out board.
1.
Press the eject button on the front side of the
cassette mechanism assembly to open the cassette
door.
2.
Remove the four screws L attaching the cassette
mechanism assembly on the back of the assembly.
Eject button
L
L
K
Opt, Dig.out board
Fig.16
Cassette mechanism
L
L
1-8
Fig.17
<Front panel assembly>
Prior to performing the following procedure, remove
the rear cover, the side panels, the cassette
mechanism assembly, the main board and the front
panel assembly.
M
UX-V30
CD mechanism cover
(CD mechanism assembly)
Removing the CD mechanism assembly
(See Fig.18 to 21)
1.
Disconnect the harness from connector CN721 and
CN722, and the card wire from CN766 on the LCD
board on the back of the front panel assembly.
2.
Remove the five screws M attaching the CD
mechanism cover to the front panel. Remove the CD
mechanism cover together with the CD mechanism
assembly.
3.
Release the harness from each hook on the CD
mechanism cover.
4.
Remove the five screws N attaching the CD
mechanism cover and the CD mechanism case.
Release the three joints g of the CD mechanism
cover and the CD mechanism case by pushing the
joint hooks inward.
5.
Disconnect the card wire from connector CN603 and
the harness from CN605 on the CD servo control
board.
6.
Remove the CD mechanism assembly from the CD
mechanism cover by pulling out it from the three
bosses h.
M
CN766
LCD board
Joint g
Fig.18
R
Belt
Loading motor
M
CN721
CN722
NN
CD mechanism cover
Loading motor
CD mechanism
case
N
Removing the LED board (A)
(See Fig.21)
1.
Remove the screw O attaching the LED board (A).
CD mechanism cover
CN603
CD servo control board
LCD board (A)
CN605
Joint g
Joint g
N
Fig.19
CD mechanism case
Joint g
CD mechanism cover
Fig.20Fig.21
1-9
UX-V30
Removing the LED board (B) (See Fig.22)
Prior to performing the following procedure, remove
the CD mechanism assembly.
1.
Remove the screw P attaching the LED board (B).
Removing the CD door switch board
(See Fig.22)
1.
Release the hook i fixing the CD door switch board
to the CD mechanism cover.
Removing the CD servo control board
(See Fig.22)
Prior to performing the following procedure, remove
the CD mechanism assembly and the LED board (A)
/ (B).
1.
Remove the two screws Q attaching the CD servo
control board.
2.
Pull out the CD servo control board in the direction of
the arrow by releasing the two joints j.
Removing the loading motor
(See Fig.18)
1.
Remove the belt and the two screws R attaching the
loading motor on the back of the front panel
assembly.
CD door switch board
Hook i
P
LCD board (B)
M
M
CN766
LCD board
Operation switch board
Q
Q
Joint j
Fig.22
CD mechanism cover
(CD mechanism assembly)
CD servo control
board
R
Belt
Loading motor
M
CN721
Fig.18
CN722
S
O
LCD board (A)
Removing the LCD board assembly
(See Fig.23)
Prior to performing the following procedure, remove
the CD mechanism cover (CD mechanism
assembly).
1.
Remove the two screws S attaching the LCD board
assembly.
2.
Disconnect connector CN781 on the LCD board
assembly from the operation switch board.
Removing the operation switch board
(See Fig.24)
Prior to performing the following procedure, remove
the LCD board assembly.
1.
Remove the eight screws T attaching the operation
switch board.
1-10
CN781
T
T
LCD board assembly
Fig.23
Operation switch board
T
Fig.24
UX-V30
<<Cassette Mechanism Section>>
Removing the Playback/Recording & Eraser
Head ( See Figs. 1 and 2 )
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/Recording & Eraser head)
from the connector CN31 on the head amplifier &
mechanism control P.C. board.
4. After dismounting the FPC holder, remove the flexible
P.C. board.
5. Remove the flexible P.C. board from the chassis base.
6. Remove the spring Afro behind the Playback/Recording
& Eraser head.
7. Loosen the reversing azimuth screw retaining the Playback
/Recording & Eraser head.
8. Take out the Playback/Recording & Eraser head from the
front of the head mount.
9. The Playback/Recoring & Eraser head should also be
removed similarly according to Steps 1 ~ 8 above.
Frexible
board
Cassette mechanism
Fig. 1
Playback/Recording &
eraser hyead
Flywheel R
Trigger armHead mount
Spring "a"
Trigger arm
Reassembling the Playback/Recording & Eraser
Head
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/Recording &
Eraser head.
4. Attach the flexible P.C. board to the chassis base, and fix
it with the FPC holder as shown in Fig. 3.
5. The Playback/Recording & Eraser head should also be
reassembled similarly to Step 1 ~ 4 above.
Head amplifier & mechanism
control P.C. board
Fig. 2
Playback/Recording &
eraser head
Spring "a"
FPC holder
Fig. 3
Flywheel R
Reversing azimuth
screw
Head
mount
Frexible
board
Head amplifier &
mechanis control
P.C. board
1-11
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