Technics STCH 730 Service Manual

Page 1

OFlDFR NO. ADQSC7l ,72C8

ervice Manual

Tuner/Sound Processor Tuner
*iSB-C so orQSB-CHSGOA *iSB-CH730 eves -CH530A S I < : H 7 3 O
-- _- _
Colour
t it .acix
88-8730 68-5730
Areas
SUH'X for Area Colour
Model No
RS-CHTSO SECHTSO Remote Control
Transmitter E >~ .mpe
Note: Tic design ufSB-CHESGGA is differ from Eh: dcove p Liure - - 7'
iEG Gainiary and 13%; "V
Because of unique interconnecting cables, when a component Aga Lanngmerica
requires service, send or bring in the entire system. (QC) Midrile East, Am and
Oceania

Specrflcations
I Pre-amplitier section
input sensitivity/impedance
PHONO
EXTERNAL, VCR, VDP
Output level
EXTERNAL REC OUT
Frequency response
PHONO
EXTERNAL, VCR, VDP
I DOLBY PRO LOGIC section
PRO LOGIC mode
CENTER mode
DELAV TIME
I EQ, SFP section
EQ SPACE mode
3 modes
I FM tuner section
Frequency range

Sensitivity
S/N 26 dB
S/N
MONO
Stereo separation
1 kHz
Antenna terminal(s)

25 mV/47 k0
250 mV/iS kg

150 mV/! 5 riéz

£1LfiROUND.3 STEREO
NORMAL, WiDE, PHANTOM
15 20, 25130 msi

HAL- CHEAR. H

TJi

B7 50 -108.00 W41
(0 05 MHZ steps]
1.8pV iiHF usable)
1,5pV

7o 33 75 dB. 1! i
35 GB

75 D { lFCflifllCei

System: SC-CH730

I AM tuner section
Frequency range
[For (E) area]
MW

522 -i611kHz(9LHz steps)
530- 1620 «Hz 10 H1 steps)
1.14 - 28R it 12 9 iii: steps)

LW
[For (EG) and (60) areas]
AM

Sensitivity lS/N 20 dB)
[For (E) area}
MW

LW
[For (EG) and (GC) areas]
AM

I Timer section

Clock Guam-lo l'pe
Function 24thJr oiogmmmable;
Play timer (1 time} Rectiniei ii iicie),
Sleep (120 min 30 mii intervals)
Setting 1 mmute - 23 hours 59 minutes (1 mini Intervals)
I General
DimensionlexHxD) 270 - 89X274 mm
Weight 1 7 kg
Note:

Specification; are idiqect to change Without rcf'ce.

Weight and di aristons are appro-imnto.
i i V k r...
Area System Tuner/sound processor Compact disc l1 ayizi Ans: iei Cassette i190 Selig; '
i l U V
SC-CH730 ST7CH730 SL-CH530 SE-CHTSO FtS-CH730
J r

" For (E) and [EG, a'eas V. . Made r: FAES
" :'Dr ((30) area . Mad-2 in NABEL
AWAHNING

wiequed for "UV
.3 "i advrse im
Products powered by electric ystoi. i be :
repair the product or p'ooucts |lw1n rt

Technicsf

u 'riaaii lech'iit

d arty t1; BXDGlW"
(Ce nornaller b/ anyone else .

i995 Malsuani
All rights reserved,
and disiliDiiflOn :t

.SUHI 00., i rd
Uiiauliiori:ed copying
a .Ieiaiin-i r law.

Page 2

ST-CAHTBO

l Contents

LocatIon of Controls
Setting the Time ..

Page

Schematic Diagram
Printed Circuit Board Diagram
Enjoylng EDS Broadcast [For (E) and (EG) areas Wiring Connection Diagram.
About the Self-Diagnostic Mode .. Block Diagram.
Operation Check and Function of IC Termlnals
Main Component Replacement Procedures . .. Replacement Parts List.
To Supply Power Source ................................. CaoInet Parts Location ..
Measurements and Adjustments [For (E) and (EG) areas]. .

NOTE:

Refer to the service manual for Model No. SE-CH730 (ORDER No. Apssurnaca) for information on Accessories,
Stacking the Components, Connections and "Packaging".

mast.)

V

I Location of Controls

ll Source input select button (SELECTOR)
I2 Remote control signal sensor (SENSOR)
@ Karaoke mode select button (KARAOKE)
.1 FtlJS buttons (DISP MODE, PTY SEL, PTY SEARCH)
...tor (E) and (EG) areas
(3; Tuning/timer select button (TUNING/TIMER, A,V)
I5 Set button (SET)
7? Record timer button (E REC)
1,8 Play timer button (.5 PLAY)
~ - @ FM button (FM)
{42? ® Tuner indicator (TUNER)
® LWIMW select button (LWIMW) ...ior (E) area
7 Q 14 AM button ...for (E6) and (66) areas
[mammal ® Tuning mode select button (TUNING MODE)
(3) Timer/clock button (TIMER/CLOCK)
45 Echo button (ECHO) ...for (GO) area

G

I Setting the Time

This is a 24-hours display clock.
These InstructIons explaIn how to set the timer for 16:25 (4:25 pm.) on Wednesday.

1

IC

STANDBVOI

g3

TUMNG/ TlMER