Technics SHEH 760 Service Manual

Page 1

AD000204CC2

Service Manual

Sound Processor

SH-EH760

DC] ooLBTsamTvn
Min-Loci:
Colour
(8).. ...Silver Type
'sevs75
Area
Remote (E) .......... Europe.
Control
Transmitter
'sa-pc15
= Ks-42 7.
RS~EH7BD SA-EHm) 'sa-Eniso
System l SC-EH750
jaunt! Processor _ _ SH-EHTGO
[Turin-rum"
Because of unique interconnecting cables, when a component _CD Chang
requires service, send or bring in the entire system. Cassette Deck
, El
7 nter Speauer
Specifications Surround @eakers ;
* : Made in Spain.
EQ/SFP section AV SURROUND section
MANUAL GEO: AV surround mode: SilvlJLAFD STEREO
3-Band parametric E0 Center lrequencv; SUPER SURROUND tMLJSlC, MOVlEi
High band 35 kHz. 5.3 kHz. 8 kHz, l2.5 kHz DSP CONTROL section
Mid band 240 Hz, 390 Hz, 630 Hz. 1 kHz, DSP control mode: SEAT peswflou
15kHZ,23KHZ.35kHZ CENTEQ FOCUS-ll 3
LOW band 70 HZ, 90 Hz, 1-H H7, 240 HZ VIRTUAL HEAR SURROUND.

Level control; I 1.2, 2.4, 3.6, 4 8. 6 dB

EQ SPACE mode:

3 modes; HEAVY, CLEAR, HALL
3D acoustic image E0:
3 modes; Al E0, 30 Al 1, 3D Al 2

Pre-amplitier section
input sensitivity/impedance:

VCR (EXT); 250 mV/15 kn

AUX (DVD); 250 mV.".5 m
Output level:

VCR REC OUT; 150 mV/1.5 kn
DOLBY PRO LOGIC section
PRO LOGIC mode: SURROUND
CENTER mode: NORMAL

DELAY TIME: 20 ms tFixod)

WL'it HEAR SURROUND;
3D ENHANCED SURROUND
Spectrum Analyzer section

Display mode: NORMAL. PEAKHOLD. AURORA
General

Dimensions (WerD): 3%le - 89-.
Mass:

Notes: Suecitcalio'\s'irc stice,

Mass and l

Manuiactured under license liOlll Dolby inhrlialllflcfi Licensing
Corporation

DOLEY,1"v3 doubie-D symbol DC! and "PE-1.0 LQGIC" a'e trademarks
not Dolby Laboratnri . ensrng Co'portiliml,

& WARNING

This service information is desrgned for experienced repair technicians only and is not designed for use by the general public.

ll does not contain warnings or cautions to advise non-technical indiViduals oi potential dangers in attempting to sawmo a product.
Products powered by electricity should be serviced or repaired only by experienced protessronal technicians. Any attempt to servrce
or repair the product or products dealt with in this service intormation by anyone else could result in serious injury or death

Technics

b 2000 Matsushita Electric industrial Co, Ltd All
rights reserved. Unauthorized copying and
distribution rs a VlOlElthn 0| law

Page 2

CONTENTS
Page

2 7 Printed Circuit Board Diagram

2 Location 0! Controls» 2 B 'E'ype Illustration of ICs, Transistors and Diodes
3 Operation Checks and Component Replacement Proceduress 3 Wiring Connection Diagram -------------------------------------------------- 20
3,1 ChGCKllg IOV Erie FL PC 8. ----------------- -- ------3 10 Black Diagram-ww- ~ ~ , ,. 21

3 2 Checking for the main P C B --

-8 11 Terminal Function of le------------ --26

4 To Supply Power Sourcev-W' ----- 11.1. |CSO1 (M38199MF215F):System Control/FL Drive - 26
5 Schematic Diagram Notes ---------------------------------------------------- 5 12 Replacemem Parts List 27
5 Schemallc Diagram VVVVVVVVVVVVVV , ~ ~ ~ W 6 13 Cabinet Parts Location ~ ~ ~ ~ » rrrrrrrrrrrrrr 31

1 Note

Reter to the service manual tor Model No. SA-EH760 (Order No. AD0002037C2) for information on Packaging.
2 Location of Controls

{3 Display mode button (DISPLAY MODE)
:5; Display
as SD Al E0, M.EO BAND button
(30 AI KEG/MEG BAND)
4'5 Jog control and joystick (MULTI JOG)
5} DOLBY PRO LOGIC button and indicator
(DU PHD LOGIC, OFF/ON)
5 Super surround button and indicator
(SUPER SURROUND)
95 Center focus button and indicator (CENTEFI FOCUS)
in Virtual rear surround button and indicator
(VIRTUAL REAR SURROUND)
5 Multi rear surround button and indicator
(MULTI REAR SURROUND)
52- 30 ENHANCED SURROUND button and indicator
(GD ENHANCED SURROUND)
:33 Sean position button and indicator
(SEAT POSITION)