Panasonic SL EH700

Page 1

AD9906137CS

Service Manual

MASH

I ICDMPAGT
DEE multi-stage noise shaping
DIGITAL AUDIO

* SB-PS7D * SB-PS70

Remote Control
Transmitter f
' ' SL-EH700 SH-EH750 ,

s.

HS

Compact Disc Changer

SL-EH700

Colour

(S) .......... Silver Type

Area

(GO) ....... Asia, Latin America, Middle East and Africa.

g§$®tdk

A

a

Because of unique interconnecting cables, when a component

requires service, send or bring in the entire system.

Traverse Deck : RAE01522 MECHANlSM SERIES

Specifications

Audio Section
No. of channels:
Frequency response:

2 (left and right, stereo)
20 to 20,000 Hz (+0.5 dB to -2 dB)

Output voltage: 078 V (at 0 dB)
Dynamic range: 85 dB
SIN: 95 dB

Total harmonic distortion:
Wow and flutter:

0.02 /3 (1 kHz, 0 dB)
Below measurable limit

Digital filter: 8 is
DA converter: 1 bit DAC MASH
Output impedance: 1 k9

Load impedance: More than 10 k9

System SC-EH7OOV
Sound Processor SH-EH750
Tuner/Amplifier SA-EH700
CD Changer SL-EH7OO
Cassette Deck RS-EH750
Front Speakers" SB-EH700
Center Speaker SB»PC70
Surround Speakers* SB-PS7O

Pickup Section

Beam source: Semiconductor Laser

Wavelength: 780 nm
General

Dimensions (WXHXD): 293x89><288 mm
Weight: 2.2 kg

Notes: Specifications are subject to change without notice.
Weight and dimensions are approximate.
Total harmonic distortion is measured by the digital
spectrum analyzer.

Video output:
Video format; NTSO/PAL *: Made in Singapore.
Output voltage; 1V p-p 75 9
& WARNING

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.

Panasonic?

© 1999 Matsushita Electric lndustrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

Page 2

SL- EH71)

CONTENTS

1 Note ------------------------------------------------ » 9 Wiring Connection Diagram --

2 Handling Precautions for Traverse Deck: 10 Type illustration of ICS, Transistors and Diodes

3 Precaution of Laser Diode ------------------------------------------------------ 2 11 Block Diagram --------------------------------------------------------------------- 36
4 Location of Controls rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr 3 12 Terminal Function of I65

5 Operation Checks and Component Replacement Procedures4 13 Troubleshooting Guide

6 Error Code Display and Servo Adjustment Function ----------- 19 14 Troubleshooting Guide for Video Circuit ------------------------------ 46

7 Schematic Diagram >>>>>>>>>>>>>>
7.1. Schematic Diagram Notes

15 Replacement Parts List --------------------------------------------------------- 51
16 Cabinet Parts Location ------
17 Loading Unit Parts Location-

7.2. Schematic Diagram ---------
8 Printed Circuit Board Diagram ---------------------------------------------- 30

1 Note

Refer to the service manual for Model No. SA-EH700 CAUTION:

(ORDER No. AD990613203) for information on TH|S PRODUCT UTILIZES A LAZER.
Accessories, Connections, Installation, Operations and USE OF CONTROLS OR ADJUSTMENTS OR
Packaging- PERFORMANCE OF PROCEDURES OTHER THAN

THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.

2 Handling Precautions for Traverse Deck

The laser diode in the traverse deck (optical pickup) may break Caution:

down due to potential difference caused by static electricity of The static electricity of your clothes will not be grounded
clothes 0" human bOdV- 30, be careful 0f electrostatic through the wrist strap. 80, take care not to let your clothes
breakdown during repair of the traverse deck (optical pickup). touch the traverse deck (optical pickup).

. Handling of traverse deck (optical pickup) FFC board Lens (Do not touch)

1.Do not subject the traverse deck (optical pickup) to (Handle it céIrelU'ly)
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 turn the variable resistor (laser power
adjustment). It has already been adjusted.

- Grounding for electrostatic breakdown prevention
1,Human body grounding N°-@(GND)9 N°-®(LD)Pi" Variable resistor
Use the anti-static wrist strap to discharge the static (9° "0an

electricity from your body.

2. Work table grounding
Put a conductive material (sheet) or steel sheet on the
area where the traverse deck (optical pickup) is placed,
and ground the sheet.

Wrist strap
(Antirstaticbraceiet) /

Iron plate or some metals to
conduct electricity

3 Precaution of Laser Diode
CAUTION:
This product utilizes a laser diode with the unit turned on, invisible laser radiation is emitted from the pick up lens.

Wave length: 780 nm
Maximum output radiation power from pick up: 100 uW/VDE