Technics SHCH 700 Service Manual

Page 1

OFIDER NO, AD920202308

Service Manual

Sound Processor
SQ-CH700

Sg-CH7OO

SH-CH700
SL-CH7OO

RS-CH700
SU-CH700

kRamote Control Transmltlar

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

SPECIFICATIONS

l PRE AMP. SECTION
Input sensitivity and impedance

PHONO 2.5 mV/47 k0

VCR/VDP (input with PHONO PIN) 250 UN 8 kfl
Total harmonic distortion

1 kHz, -3 dB output 0.08%

I EQUALIZER, SOUND FIELD PROCESSOR SECTION

Equalizer
Center frequency
LOW 31,5, 40, 50, 63.
80, 100. 125, 160, 220 (HZ)
HIGHI, 2 315. 450, 630, 800.

1 k, 1.25k,1.6k, 2.2k,3.15 k.
4.5k,6.3k.8k,10k,12.5k,16k(Hz)

Level control LOW,Hth-l1,2 :12 dB
(0) control Narrow l 8
Wide 0 7

Fixed mode
Equalizer (6 modes) HEAVY, CLEAR, SOFT. VOCAL
HEADPHONE STEREO, CAR STEREO
Sound Field Processor (6 modes)
HALL, LIVE, DISCO, CHURCH
STADIUM, THEATER

Sound Processor

SH-CH7OO

Colour
(K) ........ . Black Type
Area
Suffix for
Model No. Area Colour
Continental Europe,
Great Britain,
Germany, Italy,
(E) Asia, Latin America, (K)
Middle Near East,
Africa and
Oceania.
System: SC-CH700
Frequency response
PHONO FtlAA STANDARD CURVE
(30 Hz-1 5 kHz) :10 dB
TUNER, TAPE, VCR 15 Hz-20 KHz. 1 US
CD, DAT, VDP 15 Hz-20 kHz, ,1 dB
S/N
PHONO 64 dB (DIN)
85 dB (HP. at full scale input, IHF A)
TUNER,TAPE,VCR 71 dB(D|N)
90 dB (IHF. at full scale input, IHF A)
CD, DAT, VDP 93 dB
Video output
MONITOR 1 Vpp/750
VCR FIEC OUT 1 Vpp/750
I GENERAL
Dimensions (WXHXD) 215x83><292 mm
Weight 1.65 kg

N ates :

1. Specifications are subject to change without notice,
2 Weight and dimensions shown are approximate.
3 Total harmonic distortion is measured by the digital spectrum

analyzer.

Technics

System Tuner/CD player Sound Processor Power Amplifier Cassette Deck Speakers
SC-CH700 SL-CH700 SH-CH700 SU-CH700 RS-CH700 SB-CH7OO
Continental Europe, Great Britain,
Germany and Italy areas . . . ................ Made in PAES

Page 2

SH-CH700 I

I CONTENTS

LOCATION OF CONTROLS .,
DISASSEMBLY INSTRUCTION . . . ,
SCH EMATIC DIAGRAM (FL/Operation CITCUII] ............ 5, 6
SCHEMATIC DIAGRAM

(Main/Inpul-Output circuit) ...................... 7 . 7~ 10
PRINTED CIRCUIT BOARDS ............... ... .. I1~13

NOTES:

WIRING CONNECTION DIAGRAM ...........

MEASUREMENTS..,........,...,.
FUNCTION OF IC TERMINALS .................... 16,17
BLOCK DIAGRAM ............................... I7~IQ

DESCRIPTION OF FL PANEL [FL801 (RSL0113»F)I ..........

REPLACEMENT PARTS LIST ............. V ...... 21 ~25

CABINET PARTS LOCATION ..........................

Refer to the service manual for Model No. SU-CH700, Order No. AD9202022C8 for information
on ACCESSORIES, CONNECTIONS and PACKAGING.

I LOCATION OF CONTROLS

m Momma no

6) Equalizer frequency indicator (EO, FREQ)
(2) Effect indicator (EFFECT)

(3) Sound effect level control (JOG)

@ Equalizer ONIFLAT button (Ea, ON/FLAT)

@ Equalizer frequency select buttons (V BAND A)
© Equalizer level-control buttons (- LEVEL +)

® Slope (0) select button [SLOPE (0)]
Fixed mode select button (FIXED MODE)
© User mode select button (USER MODE)
® Memory button (MEMO)

® SFP OFF/0N button (-, OFF/ON)

® Demonstration button (DEMO)

® Voice mute button (KARAOKE)

@ Display mode select button
(DISPLAY, -SPECTRUM -MODE)

® Jog mode button (.106 MODE)

aDisplay

L--@

'55?
Vulnmwa

w; m sec

(m)

Multi level display
@ SFP indicator (Lg?)
Voice mute indicator (VOICE MUTE)

Sound effect display

® Sampling frequency indicator