JVC XL-PG31 User manual

SERVICE MANUAL
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
XL-PG31/XL-PG51
XL-PV310
No.20851
Jul. 2000
PORTABLE CD PLAYER
XL-PG31/PG51
XL-PV310
COMPACT
DIGITAL AUDIO
Areas suffix
MODEL
XL-PG31: BASE MODEL
XL-PV310: XL-PG31 + CAR KIT
XL-PG51 : XL-PG31 + REMOTE + R.BATTERY
Model composition explanation
Contents
Saftey Precautions
Important for laser products
Preventing static electricity
Disassembly method
Service parts unit
Accessories servise parts list
1-2
1-3
1-4
1-5
1-7
1-9
B ------------------------------- U.K.
C -------------------------- Canada
E ----------- Continental Europe
J ----------------------------- U.S.A.
U --------------------- Other Areas

XL-PG31/XL-PG51/XL-PV310
1-2
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 eachexposed 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.

XL-PG31/XL-PG51/XL-PV310
1-3
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.Älä katso
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. unngå utsettelse
for stråling.
REPRODUCTION AND POSITION OF ENGRAVING
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.

XL-PG31/XL-PG51/XL-PV310
1-4
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.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. 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.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.3. 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.
1.2. 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
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap

XL-PG31/XL-PG51/XL-PV310
1-5
A
A
B
C
D
F
E
AA
Disassembly Method
Removing the cabinet
1). Remove 6 screws A from bottom cabinet.
(See Fig.1)
2). Remove 1 screw B from battery compartment.
(See Fig.2)
3). The bottom cabinet comes off.
Remove main parts
1
)
. Disconnect the membrane C.
(See Fig.3)
Caution: Pay attention not damage the membrane C
during disconnection.
2). Remove the screw D on rechargeable battery plate.
(See Fig.4)
3). Remove "+" E battery plate and "-" F battery plate.
(See Fig.5)
Fig.1
Fig.2
Fig.3
Fig.5
Fig.4

XL-PG31/XL-PG51/XL-PV310
1-6
G
H
H
H
II
4). Disconnect the door switch G .
(See Fig. 6)
5). Diconnect the Header H of CD Mechanism.
(See Fig. 7)
6). Diconnect FCC cable H from PC board.
(See Fig. 8 & Fig.9) Fig. 7
Fig. 9
Fig. 8
Fig. 6
7). Remove 2 screws I on door swtich PC board.
(See Fig. 10)
Fig. 10
8). Final disassembly condition.
(Fig. 11)
Fig. 11
Caution: No serviceable parts are provided inside AC Adaptor. Do not open it.

XL-PG31/XL-PG51/XL-PV310
1-7
Bottom cabinet assembly
Parts Number Parts name
00-00031-04 bottom cabinet assembly
Main board assembly
Parts Number Parts name
P.C.Board assembly
00-00031-02
Service parts unit

XL-PG31/XL-PG51/XL-PV310
1-8
Parts Nunber Parts name
98-01740-00 Mecahnism assembly
CD Mechanism assembly
Top cabinet assembly
Model name Parts Number Parts name
XL-PG31
XL-PG51
XL-PV310
Cabinet assembly
00-00031-03
00-00031-06
00-00031-07

XL-PG31/XL-PG51/XL-PV310
1-9
15-00031-00
15-00031-01
15-00031-02
15-00031-03
AC adaptor
73-00031-00
73-00031-01
73-00031-02
73-00031-03
Over head head phone
Inner headphone
Fold headphone
Armless headphone
93-00031-00
93-00031-01 Rechargeable battery
15-00031-04
15-00031-05 Car adaptor
00-00031-01 Remote control
00-00031-00 Cassette adaptor
88-00031-00
88-00031-06
88-00031-09
88-00031-10
88-00031-11
88-00031-12
88-00031-13
88-00310-00
88-00310-01
88-00310-02
88-00310-03
88-00310-04
88-00310-05
Instructions
Accessories service parts list
Parts No. Parts Name XL-PG31 XL-PG51 XL-PV310
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DESCRI
PTION

Printed in Japan
200007(V)
VICTOR COMPANY OF JAPAN, LIMITED
AUDIO & COMMUNICATION BUSINESS DIVISION
PERSONAL & MOBILE NETWORK B.U. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.20851)
XL-PG31/XL-PG51
XL-PV310