Panasonic sl pg 590 service manual

Page 2

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l Contents

Handling Precautions for Traverse Deck
Precaution of Laser Diode.
Accessories
Connections
Caution for AC Mains Lead
Front Panel Controls ..
Sequential Play....
Operation Checks and

Main Component Replacement Procedures
Self-Diagnostic Function ..............................

Page

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. 7-11
.12,13

Schematic Diagram
Printed Circuit Board Diagra
Wiring Connection Diagram
Terminal Function of IC's
Troubleshooting Guide
Block Diagram ..
Cabinet Parts Location
Loading Unit Parts Location
Packaging
Replacement arts IS

l Handling Precautions for Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

0 Handling of traverse deck (optical pickup)

1. Do not subject the traverse deck (optical pickup) to static electricity
as it is extremely sensitive to electrical shock.

2. To prevent the breakdown of the laser diode, an anti-static shorting
pin is inserted into the flexible board (FFC board).
When removing or connecting the short pin, finish the job in as short
time as possible.

3. Take care not to apply excessive stress to the flexible board (FFC
board).

4. Do not turn the variable resistor (laser power adjustment). It has
already been adjusted.

0 Grounding for electrostatic breakdown prevention
1. Human body grounding
Use the anti-static wrist strap to discharge the static electricity from
your body.
2. Work table grounding
Put a conducive material (sheet) or steel sheet on the area where the
traverse deck (optical pickup) is placed, and ground the sheet.
Caution:
The static electricity of your clothes will not be grounded through the
wrist strap. So, take care not to let your clothes touch the traverse deck
(optical pickup).

FFC F \
Lens Do not touch
( ) (Handle it carefully) / \

Be sure to short this portion
(Use the shorting pin or clip)

Clip shorting pin
:1: - """ i
. Q

g 8 l l :

Wrist strap
(Anti-static bracelet)
1 M 0

iron plate or somemetals
to conduct electricrty

CAUTION:
THIS PRODUCT UTILIZES A LASER.

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

l Precaution of Laser Diode

CAUTION: This product utilizes a laser diode with the unit turned "an", invisible laser radiation is emitted from the pick up lens.
Wave length: 780 nm
Maximum output radiation power from pick up: 100 pWN DE
Laser radiation from the pick up unit is safety level, but be sure the followings:
1. Do not disassemble the pick up unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pick up unit. it was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to lock at pick up lens for a long time.
ACHTUNG:

adgestrahit.
Wellenlange: 780 nm

Maximale strahlungsleistung der laserinhelt: 100 pWNDE

Dieses produkt enthalt eine laserdiode. Im eingeschalteten zustand wird unsichtbare laserstrahlung von der lasereinheit

0

Die strahlung an der lasereinheit ist ungeféhrllch, wenn tolgende punkte beachtet werden:

1. Die lasereinheit nicht zerlegen, da die strahlung an derfreigelegten laserdiode gefahriich ist.
2. Den werksseitig justierten einstellregler der lasereinreit nicht verstellen.
3. Nicht mit optischen instrumenten in die tokussierlinse blicken.

4. Nicht fiber Iangere zeit in die fokussierlinse blicken.

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