JVC UX-L40R User manual

1-1
UX-L40R/UX-L30R
SERVICE MANUAL
MICRO COMPONENT SYSTEM
No.21070
Apr. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
UX-L40R/UX-L30R
UX-L40R/UX-L30R
Area Suffix
Safety precautions
Preventing static electricity
Important for laser products
Disassembly
Disassembly method
Main adjustment
Contents
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-2
1-4
1-5
1-6
1-15
1-23
1-28
1-29
1-29
1-30~42
B ---------------------------- U.K.
E -------- Continental Europe
EN ----------- Northem Europe
EV -------------- Eastem Europe
STANDBY/ON
DISPLAY
CLOCK
/TIMER
SLEEP
BASS
TREBLE
UP
DOWN CANCEL
SET
CD TAPE FM/AM AUX/MD
CD
PRGM RANDOM REPEAT
+ DISPLAY
SURROUND AHB PRO
PTY
SELECT DIMMER
VOLUME
REV.MODE FM MODE AUTO
PRESET
RM-SUXL40R REMOTE CONTROL
PTY
SEARCH
TA/News
/Info
–
COMPACT
DIGITALAUDIO
REC SURROND AHB PRO
VOLUME
BASS TREBLE
PHONES
AUTO REVERSE
CD TAPE
FM/AM
MICRO COMPORNENT SYSTEM UX-L40R
CLOCK/TIMER AUX/MD
DOWN UP
STANDBY/ ON
+–
PUSH
OPEN
0
SP-UXL40 SP-UXL40CA-UXL40R SP-UXL30 SP-UXL30CA-UXL30R
STANDBY/ON
DISPLAY
CLOCK
/TIMER
SLEEP
BASS
TREBLE
DOWN CANCEL
SET
0 CD
PRGM RANDOM REPEAT
AHBPRO
PTY
SELECT
VOLUME
REV.MODE FM MODE AUTO
PRESET
4¢
1
4
7
10
2
5
8
3
6
9
+10
RM-SUXL30R REMOTE CONTROL
UP
7
CD
3 / 8
TAPE
23
FM/AM AUX/MD
PTY
SEARCH
+ DISPLAY
–
TA/New s
/Info
COMPACT
DIGITALAUDIO
REC REV. MODE AHBPRO
VOLUME
BASS TREBLE
PHONES
AUTO REVERSE
CD TAPE
FM/AM
MICRO COMPORNENT SYSTEM UX-L30R
CLOCK/TIMER AUX/MD
DOWN UP
STANDBY/ ON
+–
PUSH
OPEN
0

1-2
UX-L40R/UX-L30R
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 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 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.).
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.
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
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.
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.
(This regulation does not correspond to J and C version.)

1-3
UX-L40R/UX-L30R
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.
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.
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.
!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.
(U.K only)

1-4
UX-L40R/UX-L30R
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
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.
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.
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
1.Solder is put up before the card wire is removed from connector on
the CD substrate as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
CD pickup
Pickup board
Shorting round
(Soldering)

1-5
UX-L40R/UX-L30R
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
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.
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.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Äläkatso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngåutsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
CLASS 1
LASER PRODUCT
!
CAUTION
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.

1-6
UX-L40R/UX-L30R
Remove the six screws Aon the back of the main
body.
Remove the screw Bon each side and remove the
cover in the direction of the arrow.
1.
2.
Disassembly method
<Main body>
Removing the Metal cover
(See Fig.1 to 3)
Fig.1(UX-L30RE)
Fig.1(UX-L40RE)
Fig.2
Fig.3
B
B
A
A
A
A
A
A

1-7
UX-L40R/UX-L30R
Remove the metal cover.
Remove the two screws Cretaining the rear cover.
1.
Removing the Rear cover
(See Fig.4)
Remove the metal cover and the rear cover.
Remove the ten screws Dretaining the rear panel.
Release the two joints aon the rear side and the
joint bon each side.(UX-L30RE)
Remove the twelve screws Dretaining the rear
panel. Release the two joints aon the rear side and
the joint bon each side.(UX-L40RE)
1.
1.
Removing the Rear panel
(See Fig.5)
Fig.4(UX-L30RE)
CC
Fig.5(UX-L30RE)
D
D
D
D
D
a
bb
Fig.5(UX-L40RE)
D
D
D
DD
D
a
bb
Fig.4(UX-L40RE)
CC

1-8
UX-L40R/UX-L30R
Remove the metal cover.
Disconnect the card wire from connector CN1 on the
tuner board.
Remove the two screws Eon the rear side and the
screw Fon the side.
1.
2.
Removing the Tuner board
(See Fig.6)
Remove the metal cover.
Disconnect the shield wire from connector CN905 on
the optical digital board.
Remove the screw Gon the rear side and the screw
Hon the upper side.
1.
2.
Removing the Optical digital board
(See Fig.7)
Fig.6
Fig.7
CN1
CN905
Tuner board
Optical digital board
E
F
G
H

1-9
UX-L40R/UX-L30R
Remove the metal cover, the rear cover, the rear
panel, the tuner board and the optical digital board.
Disconnect the card wire from connector CN903 and
CN904 on the main board.
Pull the joint cin the direction of the arrow and
remove the CD-R/RW mechanism assembly
backward while releasing the joint d.
1.
2.
Removing the CD-R/RW mechanism
assembly
(See Fig.8)
Fig.8
CD-R/RW mechanism
assembly
Main board
CN904
CN903
cd

1-10
UX-L40R/UX-L30R
Remove the metal cover, the rear cover and the rear
panel.
Disconnect the card wire from connector CN902,
CN903, CN904 and CN905 on the main board and
remove the CD-R/RW mechanism assembly.
1.
Removing the Main board/ the Heat sink
board (See Fig.9 to 11)
Remove the two screws Ito remove the main board.
Disconnect the card wire from connector CN931,
CN935, CN933, CN934, CN913, CN901, CN900,
CN917 and CN918 on the main board.(UX-L30RE)
Disconnect the card wire from connector CN931,
CN935, CN933, CN934, CN913, CN901, CN900 and
CN917 on the main board.(UX-L40RE)
Remove the band fand disconnect the card wire
from connector CN951 on the power transformer
assembly. Remove the main board / the heat sink
board from the body.
Release the joint eof the main board and disconnect
connector CN944 and CN945 of the heat sink board
from connector CN915 and CN916 of the main board
respectively.
2.
3.
3.
4.
5.
Refer to the method of removing the
CD-R/RW mechanism assembly and
Fig.8.
REFERENCE:
Fig.9
CN916
CN900
CN901
CN913
CN934
CN933 CN935
CN951
CN905 CN902 CN904
CD-R/RW mechanism assembly
CN903
CN915
Fig.10(UX-L30RE)
Fig.11
CN945
CN944
Main board
Main board
Main board
Heat sink board
Heat sink board
Power transformer
assembly
CN931
II
e
CN917
CN918
f
CN900
CN901
CN913
CN934
CN933 CN935
CN917
CN951
Fig.10(UX-L40RE)
f
Main board
Heat sink board
Power transformer
assembly
CN931

1-11
UX-L40R/UX-L30R
Remove the metal cover, the rear cover, the rear
panel, the CD-R/RW mechanism assembly and the
main board.
Disconnect the power cord from connector J1000 on
the power transformer assembly.
Remove the four screws J.
1.
2.
Removing the Power transformer
assembly (See Fig.12)
J1000
Power transformer
assembly
Fig.12
J
JJ

1-12
UX-L40R/UX-L30R
Remove the metal cover.
Remove the screw Kon each side. Pull the joint h
on both sides and lift the front panel assembly to
release the joint g.
Disconnect connector CN931, CN935, CN933 and
CN934 on the main board.
Disconnect the card wire from connector CN33 and
CN34 on the cassette mechanism board.
1.
2.
3.
Removing the Front panel assembly
(See Fig.13 to 16)
Fig.13
Fig.14
Fig.15Fig.16
Main board
Front panel
assembly
Front panel
assembly
CN935 CN931
CN933
CN934
CN34 CN33
Cassette mechanism
board
Cassette mechanism
assembly
K
K
h
hh
g
g
h
g

1-13
UX-L40R/UX-L30R
Prior to performing the following procedure, remove
the metal cover and the front panel assembly.
Disconnect connector CN913 on the main board.
1.
Removing the Phones board
(See Fig.17)
Prior to performing the following procedure, remove
the metal cover and the front panel assembly.
Remove the four screws Lretaining the cassette
mechanism assembly.
1.
Removing the Cassette mechanism
assembly (See Fig.18)
Main board
CN913
Phones board
Fig.17
Fig.18
Cassette mechanism
assembly
L
L

1-14
UX-L40R/UX-L30R
Prior to performing the following procedure, remove
the metal cover and the front panel assembly.
Remove the seven screws Mto remove the control
board.
1.
Removing the Control board
(See Fig.19)
Prior to performing the following procedure, remove
the metal cover and the front panel assembly.
Remove the four screws Nattaching the volume
panel on the front panel assembly.
Remove the six screws Oattaching the volume
board on the volume panel, and remove the volume
board.
1.
2.
Removing the Volume board
(See Fig.20 and 21)
Control board
Fig.19
Fig.20
Fig.21
Volume board
Volume panel
M
M
NN
OO
O

1-15
UX-L40R/UX-L30R
Remove the two screws Aon the bottom of the
loading base.
Disconnect the card wire from connector CN606 on
the CD servo board. Turn over the CD servo board
as shown in Fig.2 and put aside temporarily.
Solder the shorting round on the pickup board in the
CD pickup section.
Disconnect the card wire from connector CN601 and
the wire from CN801 on the CD servo board.
1.
2.
3.
4.
<CD mechanism assembly section>
Removing the CD servo board
(See Fig.1, 2)
Solder the shorting round before disconnecting
the card wire extending from the pickup. If
you do not follow this instruction, the pickup
may be damaged.
CAUTION:
When reassembling, make sure to unsolder
the shorting round after connecting the card
wire from the pickup to the connector.
CAUTION:
Fig.1
Fig.2
CD servo board
CN801
A
CN606
CN601
CD servo board
CN601
CN801
CD pickup
CD pickup
Pickup board
Shorting round
Shorting round
(Soldering)

1-16
UX-L40R/UX-L30R
Bring up the fitting in the direction of the arrow to
release the three joints a.
On the front side of the body, move the cam plate
lever to the center.
Remove the stopper screw Band pull out the tray
toward the front.
Remove the two screws Cattaching the clamper
base.
From the rear side, remove the clamper base
upward.
1.
2.
3.
4.
5.
Removing the clamper base / tray
(See Fig.3 ~ 5)
Fig.3
Fig.5
Fig.4
Tray
Tray
Joint a Joint a
Fitting
Clamper Cam plate
(Lever)
Tray
Clamper base
B
C

1-17
UX-L40R/UX-L30R
Prior to performing the following procedure, remove
the clamper base / tray and the CD servo board.
Remove the screw Dattaching the CD mechanism
assembly.
Move the CD mechanism assembly backward to
release the two joints bof the CD base on the front
side.
1.
2.
Removing the CD mechanism assembly
(See Fig.6, 7)
When reassembling, fit the front part of the
CD mechanism assembly to the two
chassis joints band attach the four
dampers correctly.
CAUTION:
Fig.6
Fig.7
b
CD mechanism assembly D
damper
damper
damper
damper
CD mechanism assembly
CD base
b
D

1-18
UX-L40R/UX-L30R
Prior to performing the following procedure, remove
the clamper base / tray and the CD servo board.
From upside of the loading base, remove the belt
from the motor pulley.
Remove the two screws Eattaching the loading
motor.
At the bottom of the body, release the three joints c
outward and pull out the loading motor board from
the shaft. The loading motor comes off with the
loading board.
Unsolder the two soldered points don the loading
motor board and remove the loading motor.
1.
2.
3.
4.
Removing the loading motor / loading
motor board (See Fig.8, 9)
When removing the loading motor board
only, unsolder the two soldering don the
loading motor and release the three joints c.
REFERENCE:
Fig.8
Fig.9
E
E
Loading motor
Motor pulley
Belt
Soldering d
c
c
Loading motor board
Loading motor

1-19
UX-L40R/UX-L30R
Prior to performing the following procedure, remove
the CD servo board.
Remove the two screws Fattaching the CD base on
the bottom of the loading base.
Remove the rear part of the CD base upward and
pull out the shaft eof the CD base from the camplate
on the front side of the loading base.
1.
2.
Remove the leaf spring on the upside of the loading
base.
Remove the screw Gattaching the cam plate fitting.
Remove the screw Hand the cam plate upward.
Remove the belt from the C.D. gear (1).
Pull out the C.D. gear (1), (2) and (3) respectively.
3.
4.
5.
6.
7.
Removing the C.D. gear (1), (2) and (3)
(See Fig.10 ~ 13)
The CD mechanism assemly comes off
with the CD base.
REFERENCE:
Fig.10
Fig.11
Fig.13Fig.12
(Bottom)
CD base
F F
Loading base
Loading base
CD base
e
CD mechanism assembly F
F
H
Cam plate
G
Cam plate fitting
Spring
C.D. gear (3)
C.D. gear (2) C.D. gear (1)
Belt

1-20
UX-L40R/UX-L30R
<Cassette mechanism section>
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).
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.
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.
Remove the flexible P.C. board from the chassis
base.
Remove the spring a from behind the playback /
recording & eraser head.
Loosen the reversing azimuth screw retaining the
playback / recording & eraser head.
Take out the playback / recording & eraser head from
the front of the head mount.
The playback / recoring & eraser head should also
be removed similarly according to steps 1 to 7 above.
1.
2.
3.
4.
5.
6.
7.
8.
Removing the playback / recording &
eraser head (See Fig. 1 ~ 3)
Reassemble the playback head from the front of the
head mount to the position as shown in Fig. 3.
Fix the reversing azimuth screw.
Set the spring 1from behind the playback / recording
& eraser head.
Attach the flexible P.C. board to the chassis base, as
shown in Fig. 3.
The playback / recording & eraser head should also
be reassembled similarly to step 1 to 4 above.
1.
2.
3.
4.
5.
Reassembling the playback / recording &
eraser head (See Fig.2, 3)
Cassette mechanism
Flywheel (R)
Trigger arm
Head mount
Fig. 1
Fig. 2
Playback / recording &
eraser head
Flexible board Spring a
Trigger arm
Head amplifier & mechanism
control P.C. board Flywheel (R)
Fig. 3
Playback / recording & eraser head Reversing azimuth screw
Head mount
Flexible
board
Spring 1
Head amplifier & mechanism control
P.C. board
CN31