Technics SLPG 390 Service Manual

Page 1

ORDER NO MB9801 00302

Service Manual

COMPMTI

DIGITAL AU DID

MASH *

mum-um noiu shaping

Compact Disc Player

RAE11OOZ MECHANISM SERIES

Specifications

I Audio

No. of channels
Frequency response
Output voltage
Dynamic range

SIN

Harmonic distortion
Total harmonic distortion
Wow and flutter

DA converter
Output impedance
Load impedance

I Pickup
Wavelength
Laser Power

2 (left and right, stereo)
2 - 20,000 Hz, 1r 1 dB
2 V (at 0 dB)

92 dB

100 dB

0.005 % (1 kHz, 0 dB)
0.007 % (1 kHz, 0 dB)
Below measurable limit
MASH (1 bit)

1 k9

More than 10 kn

780 nm

No hazardous radiation is emitted

(with safety protection)

Compact Disc Player

SL-PG390

Colour

(K) ........ Black Type

Area

(E) .. Europe.

(EB). Britain.

(EG) ...... Germany
and Italy.

(EP) ...... Russia.

jimmy» i

-- .mg

I General

Power consumption 13 W
Power supply AC 50/60 Hz, 230 - 240 V
Dimensions (W x H x D) 430 x 92 x 283 mm
Weight 3.1 kg

Note:
Specifications are subject to change without notice.
Weight and dimensions are approximate.

For United Kingdom only:
This apparatus was produced to BS 800.

*

MASH is a trademark of NTT.

AWARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public. it does not
contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Technics®

© 1998 Matsushita Electric industrial 00., Ltd.
All rights reserved. Unauthorized copying
and distribution is a violation of law.

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SL-PG390

I Contents

Handling Precautions for Traverse Deck
Precaution of Laser Diode
Accessories
Connections.....,.,.,,..........
Caution for AC Mains Lead
Front Panel Controls
Sequential Play..,....u
Self-Diagnostic Function .
Operation Checks and
Main Component Replacement Procedures......................

8-12

Schematic Diagram
Block Diagram
Printed Circuit Board Diagram
Wiring Connection Diagram
Terminal Function of lCs .
Troubleshooting Guide .
Cabinet Parts Location .....
Loading Unit Parts Location
Packaging ......................... .
Replacement Parts List ............................................................... 32, 33

I 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 plckup)

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,

o 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),

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

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

crip Snorting pin
_____ ,_____,
I a I lg}:
L I l I

Wrist strap
(Anti-static bracelet)
1 M o

ron plate or some metals
to conduct electricity

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:
Wavelength: 780 nm

This product utilizes a laser diode with the unit turned on", invisible laser radiation is emitted from the pick up lens.

Maximum output radiation power from pick up: 100 pWNDE

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 lock 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

Dieses produkt enthalt eine Iaserdiode. lm eingeschalteten zustand wird unsichtbare Iaserstrahlung von der lasereinheit

Maximale strahlungsleistung der laserinhelt: 100 pWNDE

Die strahlung an der lasereinheit ist ungefahrllch, wenn folgende punkte beachtet werden:

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

4. Nicht Uber tangere zeit in die fokussierlinse blicken.

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