Technics STCH 570 Service Manual

Page 1

ervice Manual

Tuner/Sound Processor

DEI-

P R O ' L 0 G l C
*1 *ZS *v*ESB-PCS7O *~*ESB CH570

requires service, send or bring in the entire system.

ORDER NO. ADSGOSOSOCE

Tuner

' ST-CH570

st.-cn57o sr-cn57 _ 10mm" .
' ' l (K) : Black
*1 53-95570 : *SB-P5570 Areas
or Suffix for
82554.5) Model No Area Colour
(E) Europe
RS-CH770 . SE-CH570 Remote Control (53) Germany and a'Y
Note: The design ctSB-PS1O is differ from the above picture. Transmitter Asia, Latin America, (K)
_ . (GC) Middle East, Africa and
[ Because of unique Interconnectmg cables, when a component ] Oceania

System: SC-CHSTO

Specrflcatlons

l Pre-amplitier section SIN MONO

Input sensitivity/impedance Stereo separation IkHz
[For (E) and (EG) areas] . PHONO 2.5 mV/47 kg 7 Antenna terminal(s)
EXTERNAL, AUX 250 mV/15 k9 I AM tuner section

Output level EXTERNAL REC OUT 150 mV/1.5 k9. Frequent! range

Frequency response [For (E) area]

[For (E) and (EG) areas] PHONO 30 Hz - 15 Hz/+1.Sto v2.0 dB

70 dB (75 dB, lHF)

85 dB

75 Q (unbalanced)

MW 522 - 1611 kHz (9 kHz steps)
530 -1620'kl-lz (10 kHz steps)

EXTERNAL, AUX 20 Hz- 40 kHz . LW 144- 288 kHz (9 kHz steps)

S/N . ' [For (EG) and (GC) areas] AM 522 - 161 1 kHz (9 kHz steps)
[For (E) and (EG) areas] PHONO DIN 73 dB (77 dB, IHF) ' . 530-1620 kHz (10 kHz steps)
EXTERNAL, AUX DIN 80 dB, (82 dB, IHF) Sensitivity (SIN 20 dB) .

I EQ/SFP section ' , [For (E) area] MW 500 uV/m

Center frequency 120 kHz, 1 kHz. 7 kHz LW 50 [1V

E0 SPACE mode [For (EG) and (GO) areas] AM 500 uV/rn
3 modes ~ HALL. CLEAR, HEAVY l Timer section -

V. BASS mode Clock Quartz-lock type
Center frequency 70 Hz Function 24-hour programmable;
V. BASS 1 +3 dEl Play timer (1 time), REG timer (1 time),

V. BASS 2 +6 dB Sleep (120 min, 80 min intervals)

I DOLBY PRO LOGIC section Setting ' 1 minute-23 hours 50 minutes

PRO LOGIC mode SURROUND, 3 STEREO (1 min intervals)

CENTER mode NORMAL, WIDE, PHANTOM I General

DELAY TIME 20 ms (Fixed) Dimensions (W x H x D) 270 >< 89 x 282 mm

I FM tuner section Weight 1.7 kg

Frequency range 87.50 -108.00 MHz (0.05 MHz steps)

Sensitivity 1.8 W (lHF usable) Note: Specifications are subject to change without notice.

S/N 26 MB 1.5 )N Weight and dimensions are approximate.
Tuner/sound Compact disc . .
System processor player Amplifier Cassette deck Front speakers Centerspeaker Surround speakers
*1 SB-PT57O
sc-cnsro sr-cu57o SL-CHSTO SE-CH570 ns-CH77o *Wsecnsm SBPC570 i "1539357
' , *ZSB~PT570A
*ESB-Pcsm l *ZSB-P81 o
*1 For (E) and (EG) areas: Made in PAES
*2 For (GC) area : Made in NABEL
AWARNING .
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.

Technics®

© 1996 Matsushita Electric Industrial Co.. Ltd.
All rights reserved. Unauthorized copying

and distribution is a violation of law.

Page 2

, ST-CH570

I Contents me
Location of Controls .. 2
Setting the Time .... 2I 3
Enjoying RDS Broadcast [For (EG) area] 3, 4
About the Self-Diagnostic Mode A. .. 5

Operation Check and

Main Component Replacement Procedures
To Supply Power Source ...............................
Measurements and Adjustments [For (EG) area] .

NOTE:

WNO)

.Block Diagram.

schematic Diagram ...............
Printed Circuit Board Diagram .
Wiring Connection Diagram ...... 31

Function of IC Termina 5
Replacement Parts List
Cabinet Parts Location

Refer to the service manual for Model No. SE-CH570 (ORDER No. AD9603054GS) for information on Accessories",

Installation, Connections" and Packaging".

I Location of Controls

if If]? r

'13 sun 34 ®

[[For (EG) area]

i Setting the Time V

This is a 24-hours display clock.

(D Source input select button (SELECTOR)
®, Remote control signal sensor (SENSOR)
® Karaoke mode select button (KARAOKE)
G) Display
® Tuning/timer select button (TUNING/TIMER)
@ Set button (SET)
® Record timer button (6) REC)
Play timer button (6) PLAY)
® Display mode select button (DISP MODE)...for (EG) area
® PTY select button (PTY)...for (EG) area
® PTY search button (PTY SEARCH)...for (EG) area
02 FM/FM mode select button (FM, -AUTO/MON0)
® Tuner indicator (TUNER)
@ LW/MW select button...for (E) area
AM button...for (EG) and (60) areas
is Tuning mode select button (TUNING MODE)
® Clock/timer button (CLOCK/TIMER)

These instructions explain how to set the timer for 16:25 (4:25 pm) on Wednesday

3 _
I Q) TUNING/TIMER ® (D

TUNING/TIM ER

,-

V

POWER

STANDBYES )

CLOCK]
TIMER SET

t3:

U

H