Technics SHEH 550 Service Manual

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ORDER NO. ADQBOBOGOCB

Service Manual

Sound Processor

VIJBTUAL

DCI

SURROUND

SB-EH550

Remote Control
Transmitter

RS-EH750 SA-EHSSO

Sound Processor

EH550

SH-

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

Specifications

EQ/SFP Section

MANUAL GEQ:
Center frequency;
Level control;

E0 SPACE mode:

100 HZ, 315 HZ, 1 kHz, 3.15 kHz, 10 kHZ
t 3,, 6, SC?!

3 modes; HEAVY, CLEAR, HALL
3D Acoustic Image E0:
3 modes; AI EQ SD AHBD A|2

Pre-amplifier Section
Input sensitivity/impedance:

vcn (EXT); 250 rnV/15 kn
Output level:
VCR REC OUT; 250 mV/1 5 it!)

VIRTUAL DOLBY SURROUND Section
Mode: VlRTUAL DOLBY SURROUND

AV SURROUND Section

AV SURROUND mode: SIMULATED STEREO

A WARNING i

Colour
(8) ........ SilverType
Areas
*SB-EHSSD (E) .. Europe.
Tw (GC) Asia, Latin
V America,
Middle East
and Africa.
System l SC-EH550
Sound Procficor SH-EH550
Tunei Anjplilier SA-EHSSO
1935116: , , Si-EHsso
:CasseEeD:_ck . ns-_EH750 _
l'Iront Speakers l SB-EHSSO

* . Made in Singapore.

DSP CONTROL Section

DSP CONTROL mode: SEAT POSITION

Spectrum Analizer Section

Display mode: NORMAL, FgAKHOLD, AURORA
General

Dimensions (WXHXD): 293x89><269 mm
Weight: 1.4 kg

Notes: Specifications are subject to change Without notice.
Weight and dimensions are approximate

Dolby noise reduction manutactured under license lrom Dolby
1 Laboratories LicenSing Corporation.
i"DOLBY", the doublerD symbol Di] are trademarks of Dolby
Laboratories LicenSing Corporation.

This service inlormation is designed lor experienced repair technicians only and is not designed for use by the general public, It does not
contain warnings or cautions to amuse non-technical indivtduals of potential dangers In attempting to servtce 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 inlcrnation by anyone else could result in serious ii-iury or death.

Technicsi

All rights reserved, Unauthorized copying and

©1999 Marsushita Electric lnGUSlltal 50.,Tta.
rdistribution is awviolaition ol '3,

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7 EH:EH550

l Contents

Location of Controls . . . Widrg Connect on Diagram
Operation Checks and Terminal Function oi lC's .

Componenl Replacemenl Procedures .................................... 34 Blow: Diagram .............
Schematic Diagram ............... rrvrnerit Parts List
Printed Circuit Board Diagram . Marts Location .
Type illustration of lCs. Transistors and Diodes

Har

NOTE:

Refer to the service manual for Model No. SA-EH550 (ORDEFI No. ADQSDBOSZCZ) tor information on "Accessories",
"Connections", "Installation" , "Operations" and Packaging".

I Location of Controls

splay mode select button (DISPLAY MODE)

splay

4: an Al EQ button (3D AI EQ)

rm Simulated stereo on/ofl button and indicator
(SIMULATED STEREO)

5! Seat position button and indicator
(SEAT POSITION)

~~ Multi control buttons (>, A. 1, V MULTI CONTROL)

35 Virtua| dolby surround onJoft button and indicator
{VIRTUAL DOLBV SURROUND)

59 E0 select button (50)