Technics SLEH 60 Service Manual

Page 1

aDAP.

ORDER NO. ADWOEOZSCB

ervice Manual

Compact Disc Player

DDDDDDD SL-EH6O

System: SC-EHBO Colour
(K) ................. Black

* SB-EHEO * B-EHGD

SL-EHGO SH-EHGO ~

Area

(E)/(EP) Europe, Russia, Asia,
Latin America, Middle
East, Africa and Oceania.

digs

DIGITAL Aunlu

3 SB-PCED

aseuso ' sA-EHeo Remote Control

Transmitter MAS H*a

Mum .tuzo min .mhg

Because of unique interconnecting cables, when a component
requires service, send or bring in the entire system.

RAEO15OZ MECHANISM SERIES

Specifications
Audio Section General
DA converter : 1 bit DAC MASH Dimensions : 287(W)/89(H)/336(D) mm

Pickup Section Welsh! : 2.4 kg

Wavelength : 780 nm Notes :Specitications are subject to change without notice.
Weight and dimensions are approximate.

System/SC-EHSO:

Sound processor: SH-EHBO, Tuner/Amplifier: SA-EHGO, Compact disc changer: SL-EHGO, Cassette deck: RS-EHED,
Front speakers: * SB-EHGO, Center speaker: *1 SB-PCGO, Surround speakers: *2 SB-PSGO
Notes: *1.i.For Europe and Russia : Made in PAES, For others : Made in MESA

*2...Made in MESA
*3...MASH is a trademark of MT

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.

© 1997 Matsushita Electric Industrial 00., Ltd.

0 o
All rights reserved. Unauthorized copying
n]. S and distribution is a violation of law.

Page 2

SL-EH60 I

l Contents

Handling Precautions for Traverse Deck
Precaution of Laser Diode
Location of Controls .........
How to Set the "Transport Mode
Listen to Compact Discs .........
Operation Checks and

Main Component Replacement Procedures....................,........ 6 ~ 17
Error Code Display and Servo Adjustment Function
To Supply Power Source
Schematic Diagram ......
Printed Circuit Board Diagram

Page

NOTE:

Type illustration of lC's, Transistors and Diodes
Wiring Connection Diagram
Terminal Function of lC's
Troubleshooting Guide
Block Diagram
Replacement Parts List (Eiectncal)
Resistors and Capacitors ..............
Replacement Parts List (Cabinet and Loading Unit) .
Cabinet Parts Location
Loading Unit Parts Location

Refer to the service manual for Model No. SA-EHGO (ORDER No. AD970304BCS) for information on Accessories,

Connections, Installation", and Packaging.

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 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 protect the laser diode against electrostatic breakdown, short the flexible

board (FFC board) with a clip or similar object.

3. Take care not to apply excessive stress to the flexible board (FFC board).
4. Do not tum the variable resistor (laser power adjustment). It has already been

adjusted

U 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).

Caution when Replacing the Traverse Deck:

The traverse deck has a short point shorted with solder to protect the laser
diode against electrostatic breakdown. Be sure to remove the solder irom the

short point before making connections.

I Precaution of Laser Diode

FFC board Lens (Do not touch)

(Handle it careluily)

Variable resistor

No.© (GND) pin No.®(LD) pin (Do not tum)

Wrist strap
(Anti-static bracelet) /

/
Iron plate or some metals to
conduct electricity

1 Mn

CAUTION: This product utilizes a laser diode with the unit turned on", invisible laser radiation is emitted from the pick up lens.
Wavelength: 780 nm
Maximum output radiation power from pick up: 100 erN DE
Laser'radlation 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. ltwas already adjusted.
3. Do not lock at the locus lens using optical instruments.
4. Recommend not to lock at pick up lens for a long time.
ACHTUNG: Dieses produkt enthalt sine laserdiode, lm eingeschalteten zustand wird unslchtbare laserstrahlung von der lasereinheit

adges'trahit.
Welle'nlange: 780 nm
Maximaie strahlungsleistung deriaserinheit: 100 pWNDE

Die strahlung an der lasereinheit ist ungetahrllch, wenn folgende punkte beechtet werden:

1. Die lasereinheit nicht zeriegen, da die strahlung an der freigelegten laserdiode geiahriich lst.
2. Den werksseitig justierten einstellregler der lasereinreit nicht verstellen.
. 3. Nicht mit optischen instrumenten in dis fokussieriinse blicken.

4. Nicht fiber Iangere zeit in die fokussierlinse blicken.

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