JVC FS-L30 Service Manual

SERVICE MANUAL

COMPACT COMPONENT SYSTEM

FS-L30

STANDBY / ON

COMPACT

DIGITAL AUDIO

REC REV. MODE AHB PRO

COMPACT COMPONENT SYSTEM FS-L30

VOLUME

CLOCK/TIMER AUX/MD

FS-L30

FS-L30

STANDBY/ON

1

3

2

4

5

6

DISPLAY

CLOCK

7

9

8

/TIMER

+10

10

SLEEP

UP

TREBLE

BASS





SET

CANCEL

DOWN

/

CD

TAPEFM/AM AUX/MD

AUTO

PRESET



CD

REV.MODEFM MODE

PRGM RANDOM REPEAT

AHB PRO

DIMMER

VOLUME

RM-SFSL30J REMOTE CONTROL

SP-UXL30 SP-UXL30CA-FSL30

Contents

Safety precautions
Preventing static electricity
Important for laser products
Importance administering
point on the safety
Disassembly method

BASS TREBLE

PHONES

1-2
1-3
1-4

1-5
1-6

DOWN

AUTO REVERSE

+Ð

FM/AM

UP

PUSH



OPEN

CD TAPE

Adjustment method
Flow of functional operation
until TOC read (CD)
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs

Area Suffix

J ------------------------- U.S.A.
C ----------------------- Canada

1-20

1-25
1-26
1-26
1-27~37

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

No.21087

1-1

Apr. 2002

FS-L30

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.).

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.

!

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.

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.)

1-2

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.

FS-L30

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.

(caption)
Anti-static wrist strap

Conductive material
(conductive sheet) or iron plate

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.

Pickup board

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

*Please refer to "Disassembly method" in the text for pick-up and how to
detach the substrate.

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.

CD pickup

Shorting round

(Soldering)

1-3

FS-L30

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.

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

CLASS 1
LASER PRODUCT

1-4

DANGER : Invisibie laser radiation
when open and interlock or
defeated.
AVOID DIRECT EXPOSURE TO
BEAM (e)

VARO : Avattaessa ja suojalukitus
ohitettaessa olet alttiina
näkymättömälle lasersäteilylle.Älä
katso säteeseen. (d)

VARNING : Osynlig laserstrålning är
denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen. (s)

ADVARSEL :Usynlig laserstråling
ved åbning , når
sikkerhedsafbrydere er ude af
funktion. Undgå udsættelse for
stråling. (f)

Importance administering point on the safety

FS-L30

Caution: For continued protection against risk of
fire, replace only with same type 2A/125V for F1000
and 1.25A/125V for F1001.
This symbolspecifies type of fast operating fuse.

Precaution: Pour evitisques de fer reux, remplacez
le fusible de surete de F1000 comme le meme type
que 2A/125V, et 1.25A/125V pour F1001.
Ce sont des fusibles suretes qui functionnes rapide.

^

1-5

FS-L30

Disassembly method

<Main body>

Removing the metal cover
(See Fig.1 ~ 3)

1.

Remove the six screws A on the back of the main
body.

2.

Remove the screw B on each side and remove the
cover in the direction of the arrow.

A

A

A

Fig.1

B

Fig.3

Removing the rear cover (See Fig.4)

Remove the metal cover.

1.

Remove the two screws C retaining the rear cover.

1-6

C

B

Fig.2

C

Fig.4

FS-L30

Removing the rear panel
(See Fig.5)

Remove the metal cover and the rear cover.

1.

Remove the ten screws D retaining the rear panel.
Release the two joints a on the rear side and the
joint b on each side.

Removing the tuner board (See Fig.6)

Remove the metal cover.

1.

Disconnect the card wire from connector CN1 on the
tuner board.

2.

Remove the two screws E on the rear side and the
screw F on the side.

Joint b

F

D

D

D

D

Joint a

D

Joint b

Fig.5

E

Removing the Optical digital board
(See Fig.7)

Remove the metal cover.

1.

Disconnect the shield wire from connector CN905 on
the optical digital board.

2.

Remove the screw G on the rear side and the screw

H on the upper side.

Removing the CD-R / RW mechanism
assembly (See Fig.8)

Remove the metal cover, the rear cover, the rear
panel, the tuner board and the optical digital board.

CN1

Tuner board

Fig.6

Optical digital board

H

G

Fig.7

CD-R / RW mechanism assembly

Joint c

CN905

Jpint d

1.

Disconnect the card wire from connector CN903 and
CN904 on the main board.

2.

Pull the joint c in the direction of the arrow and
remove the CD-R / RW mechanism assembly
backward while releasing the joint d.

CN903

CN904

Main board

Fig.8

1-7

FS-L30

Removing the main board / the heat sink
board (See Fig.9 ~ 11)

Remove the metal cover, the rear cover and the rear
panel.

1.

Disconnect the card wire from connector CN902,
CN903, CN904 and CN905 on the main board and
remove the CD-R / RW mechanism assembly.

REFERENCE:

2.

Remove the two screws I to remove the main board.

3.

Disconnect the card wire from connector CN931,
CN935, CN933, CN934, CN913, CN901, CN900,
CN917 and CN918 on the main board.

4.

Remove the band f and disconnect the card wire
from connector CN951 on the power transformer
assembly. Remove the main board / the heat sink
board from the body.

Refer to the method of removing the
CD-R / RW mechanism assembly and
Fig.8.

Joint e

CN933

CN905

CN915

CD-R / RW mechanism assembly

CN902

CN931

CN904

CN916

I

Fig.9

Main board

CN935

CN903

I

Main board

Heat sink board

5.

Release the joint e of the main board and disconnect
connector CN944 and CN945 of the heat sink board
from connector CN915 and CN916 of the main board
respectively.

Removing the power transformer
assembly (See Fig.12)

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

1.
the power transformer assembly.

Remove the four screws J.

2.

J

CN934

CN913

CN901

Main board

CN900

CN917
CN918

Band f

CN951

Power transformer assembly

Fig.10

Heat sink board

1-8

J

Power transformer assembly

J

J1000

CN944

CN945

Fig.11Fig.12

FS-L30

Removing the front panel assembly

(See Fig.13 ~ 16)

Remove the metal cover.

1.

Remove the screw K on each side. Pull the joint h on
both sides and lift the front panel assembly to
release the joint g.

2.

Disconnect connector CN931, CN935, CN933 and
CN934 on the main board.

3.

Disconnect the card wire from connector CN33 and
CN34 on the cassette mechanism board.

Front panel
assembly

Joint h

Main board

Joint g

K

Fig.13

Joint g

Front panel
assembly

CN34

CN33

CN935

CN931

Fig.14

Joint g

CN933

CN934

Joint h

K

Cassette mechanism assembly

Cassette mechanism board

Joint hJoint h

Fig.15Fig.16

1-9

FS-L30

Removing the phones board

(See Fig.17)

Prior to performing the following procedure, remove
the metal cover and the front panel assembly.

1.

Disconnect connector CN913 on the main board.

Main board

CN913

Phones board

Removing the cassette mechanism
assembly (See Fig.18)

Prior to performing the following procedure, remove
the metal cover and the front panel assembly.

1.

Remove the four screws L retaining the cassette
mechanism assembly.

Fig.17

L

L

Cassette mechanism assembly

Fig.18

1-10

FS-L30

Removing the control board (See Fig.19)

Prior to performing the following procedure, remove
the metal cover and the front panel assembly.

1.

Remove the seven screws M to remove the control
board.

Removing the volume board

(See Fig.20, 21)

Prior to performing the following procedure, remove
the metal cover and the front panel assembly.

M

Control board

N

M

Fig.19

N

1.

Remove the four screws N attaching the volume
panel on the front panel assembly.

2.

Remove the six screws O attaching the volume
board on the volume panel, and remove the volume
board.

Fig.20

Volume panel

Volume board

O

O

O

Fig.21

1-11

FS-L30

<CD mechanism assembly section>

Removing the CD servo board

(See Fig.1, 2)

CAUTION:

1.

Remove the two screws A on the bottom of the
loading base.

2.

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.

3.

Solder the shorting round on the pickup board in the
CD pickup section.

4.

Disconnect the card wire from connector CN601 and
the wire from CN801 on the CD servo board.

CAUTION:

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.

When reassembling, make sure to unsolder
the shorting round after connecting the card
wire from the pickup to the connector.

CD servo board

CN601

CN606

CN801

A

Fig.1

CD servo board

CN801

CN601

CD pickup

Shorting round

Pickup board

CD pickup

Shorting round

(Soldering)

Fig.2

1-12