Technics RSCH 700 Service Manual

Page 1

ORDER NO. ADQZO2024CS

. Service Manual

Dolby NR-Equipped
Stereo Double Cassette Deck

SB-CH700

Afifizgsew'

RS-CH700

SH-CH700
SL-CH700

SU-CH700

SB-CH'IOO

«Remote Control Transmitter

RS-TR165 MECHANISM SERIES (AR300)

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

SPECIFICATIONS
Deck system: Compact cassette stereo
Tape speed: 4.8 cm/sec.
Bias frequency: 80 kHz
Heads:
(DECK 2) REC/PLAY; Permalloy head
Erasing; Double-gap ferrite head
(DECK 1) PLAY; Permalloy head
Motors:
(DECK 2); DC servo motor
(DECK 1); DC servo motor
Wow and flutter: 0.1 % (WRMS)
Fast Forward and
Rewind Tlme: Approx. 110 seconds with 0-60

cassette tape

uri-

Cassette Deck

RS-CH7OO

Colour

(K) .......... Black Type

Area

Sulfix for
Model No.

Area

Colour

(E)

Continental Europe,
Great Britain,
Germany, Italy, Asia,
Latin America,
Middle Near East,
Africa and Oceania

(K)

System: SC-CH700

SIN (CrOz):

DOLBY 5 NR on; 66 dB (CCIR)

DOLBVCNRon; 74dB (CClR)

DOLBY off; 56 dB (A WTD, signal level: MOL)
GENERAL
Dimensions (WXHXD): 215x110x279 mm
Weight: 2.8 kg
Notes:

1 . Specifications are subject to change without notice,
2. Weight and dimensions shown are approximate.

HX Pro headroom extension originated by Bang Oluisen and
manufactured under license from Dolby Laboratories Licensing

Frequency response (CORT ON): Corporation.

Normal; 20~17000 Hz DOLBY, the double-D symbol, and HX PRO" are trademarks of
30~15000 HZ (DlN) Dolby Laboratories Licensing Corporation.

CrOz; 20~18000 HZ
30~17000 Hz (DIN)

METAL; 20~20000 Hz
30~19000 Hz (DIN)

System Tuner/CD player Sound Processor Power Amplifier Cassette Deck Speakers
SC-CH700 SL-CH700 SH-CH7DO SU-CH7OO RS-CH7OO *SB-CH'iOO

Technics

Continental Europe, Great Britain,

Germany and ltary areas ......

Made in PAES

Page 2

RS-CH7OL|
l CONTENTS

LOCATION OF CONTROL .......
DISASSEMBLY INSTRUCTIONS ..........
MEASUREMENTS AND ADJUSTMENTS , .
SCHEMATIC DIAGRAM (Main circuit) ..................
SCHEMATIC DIAGRAM

(Mechanism/Operation circuit) ......................
PRINTED CIRCUIT BOARDS
WIRING CONNECTION DIAGRAM .
BLOCK DIAGRAM .................................... 21, 22

NOTES:

Page
COMPUTER CONTROL RECORDING SYSTEM (CCR'I) . . , . 23
DESCRIPTION OF PANEL ................................ 24
FUNCTIONS OF lC TERMINALS . , . . ............. 25, 26
REPLACEMENT PARTS LIST ...... t 27~32, 35, 36, 41
CABINET PARTS LOCATION ........................ 33-454
MECHANISM PARTS LOCATION (DECK1) . ., . . . . 37, 38
MECHANISM PARTS LOCATION (DECK 2) ............ 39 4O

Refer to the service manual for Model No. SU-CH700, Order No. AD9202022CB for
information on ACCESSORIES, CONNECTIONS and PACKAGING.

I LOCATION OF CONTROL

® Deck 1 reverse side playback button (<1)

® Deck 1 stop button (El)

© Deck 1 forward side playback button (|>)

@ Deck 2 reverse side playback button (<1)

© Deck 2 stop button (lj)

© Deck 2 forward side playback button (D)

® Deck 1 Fast-forward/rewind/tape program
sensor buttons [44 (TPS), (TPS) >>]

Deck 1 counter reset button (COUNTER RESET)

Dolby noise reduction button (DOLBY NR)

Deck 1 cassette eject button (EJECT)

® CORT (computer control record tuning) button
(CORT)

® Edit speed select button (SPEED)

® Synchro start button (SYNCHRO START)

Record/record standby button (REC PAUSE)

® Reverse mode select button (REVERSE MODE)

® Deck 2 counter reset button (COUNTER RESET)

63 Deck 2 cassette eject button (EJ ECT)

Deck 2 Fast-forward/rewind/tape program
sensor buttons [44 (TPS), (TPS) >>]

ODisplay

fit? it???

A»- fit

Deck 1 remote indicator

@ Dolby noise reduction indicators (IE, I)

Q) Reverse mode indicators ( 2 ,c'.) ,oo)

@ Edit indicator (-)

® CD edit indicator (CD)

® Edit speed indicators (x1, x2)

® Deck 2 remote indicator

® Deck 1 tape travel direction indicators (4, b)
® Deck 1 playback indicator (PLAY)

Deck 1 tape indicator

® Deck 1 tape counter

(19 CCRT indicator

® Deck 2 tape counter .

® Deck 2 tape indicator

® Deck 2 playback indicator (PLAY)

@ Recording indicator (E3)

@ Deck 2 tape travel direction indicators (4 , >)