Technics SLHD 70 Service Manual

Page 1

ORDER NO. AD9611202C2

Service Manual

CD Changer
GOMPAGT 3

mum-Inge nous chaining
DIGITAL AUDIO E MASH is a trademark of NTT.

SB-HD70 SEH D70

SL-HD'IO ST-HD70

Compact Disc Changer

SL-HD7O

Colour

(N) ............... Gold Type
Area

E .. .. Europe.

System: SC-HD70
Rs-HD70 SE-HD70 Remote control
transmitter

Because of unique interconnecting cables, when a component

requires service, send or bring in the entire system.
RAE0161Z Mechanism Series
Specifications
Audio General

DA converter: 1 bit 2 DAC MASHK Dimensions: 196(Wide)! 67(High)/ 229(Depth) mm
Weight: 1.7 kg

Pickup

Wavelength: 780 nm Notes:

1. Weight and dimensions shown are approximate.
2 Design and specifications are subject to change without notice,

System Tuner CD Changer Amplifier Cassette deck Speakers
SC-HD70 ST-HD70 SL-HD'IO SE-HDIO RS«HD7D * SB-H D70
*Made in PAES
A 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 oi 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"

© 1996 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation at law.

Page 2

SL-HD70

I Contents

Precaution of Laser Diode.
Location of Control .........
Handling Precautions for Traverse Deck
Operation Checks and Main Component

Replacement Procedures .
Replacement of the Foot
Error Code Display and Servo 1
Measurements and Adjustments .
Block Diagram ....................
Wiring Connection Diagram ..
Schematic Diagram .

Pa
38,
. 4o~

Printed Circuit Board Diagram ..
Terminal Guide ....................
Replacement Parts List (Electrical
Resistors and Capacitors ..........
Replacement Parts List (Cablnet)..
Cabinet Part: Location
Loading Mechansim Parts ocatlon
Replacement Parts List (Loading Mechanism)
Replacement Parts List

(Packing Material I Test Disc I Service Klt)
Packaging ..

47,

NOTES:
CReter to the service manual tor Model No. ST-HD70 (ORDER No. AD961019702) for intormatlon on Installation " and Connections".
OReter to the service manual (or Model No. SE-HD70 (ORDER No. A09610196A2) tor intormatlon on Accessories".

I Precaution of Laser Diode

CAUTION: This product utilizes a laser diode with the unit turned on", invisible laser radiation is emitted from the pick
lens.
Wave length: 780 nm
Maximum output radiation power lrom pickup: 100 pWNDE
Laser radiation from the pickup lens is satety level, but be sure the iollowings:
1. Do not disassemble the optical pickup unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pickup unit. it was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at pickup lens for a long time.
ACHTUNG: Dieses Produkt enthalt eine Laserdiode. lm eingeschalteien Zustand wird unsichtbare Leserstrahlung von d

Lasereinheit abgestrahlt.

Wellenlange: 780 nm
Maximale Strahlungsleistung der Lasereinheit: 100 pWNDE

Die Strahlung an der Lasereinheit ist ungeiahrlich. wenn folgende Punkte beachtet werden:

Die Lasereinheit nicht zerlegen, da die Strahlung an der ireigelegten Laserdiode getahrlich ist.
Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.

Nicht mit opiischen lnstrumenten in die Fokussierlines blicken.

Nicht fiber langere Zeit in die Fokussierlines blicken.

Back side Upper side

PWN.

DANGER mm usili "Mimi men n?!»

WLW

VARD'
VAiilililG (isms m W m m

MARSH W mu M

Wasm W Hamlin: run until:
slum

CLASS 1
LASER PRODUCT

LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT

CAUTION!

THIS PRODUCT UTILIZES A LASER.

USE OF CONTROLS 0R ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATlON EXPOSURE.

,2,