Technics RSBX 707 Service Manual

Page 1

ORDER NO. AD910617OCZ

Service Manual

Dolby NR-Equipped

Stereo Cassette Deck

DEI-

>t< HX Pro headroom extension originated by Bang Olufsen
and manufactured under license from Dolby
Laboratories Licensing Corporation.
DOLEY, the double-D symbol, and HX PRO" are
trademarks of Dolby Laboratories Licensing
Corporation.

RS-TR555 M ECHANISM SERIES (AR350)

SPECIFICATIONS

I CASSETTE DECK SECTION

Deck system Stereo cassette deck

Track system 4-track, 2-channel

Recording system AC bias
Bias trequency 80 kHz

Erasing system AC erase

Heads

Recording head [Permalloy (Combination)]x1
Playback head [Permalloy (Combination)]> Erasing head (Double-gap ferrite) ><1

Motors
Capstan drive (Quartz DD motor) > Reel table drive (DC motor)><1
Cassette holder open/close (DC motor) x1
Tape speed 4.8 cm/sec. (17/3 ips)
Wow and flutter 0.05% (WRMS)

t0,14% (DIN)
Fast forward and rewind time
Approx. 100 seconds with C-GO cassette tape
Frequency response (Dolby NR off)

NORMAL 30 Hz~t7 kHz, :3 dB
20 Hz~18kHz (DIN)
Cr02 30 Hz~18 kHz, :3 dB
20 Hz~19kHz (DIN)
METAL 30 H2~19 kHz,13 dB

20 Hz~20 kHz (DIN)

Technics

Dimensions (WXHXD)

Cassette Deck

RS-BX707

Color
(K Black Type
Area
68::er Area Color

(EB) Great Britain.

FR. Germany and (K)
(EG) Italy/Continental
Europe.

S/N (signal level:max recording level, CrOz type tape)

NR off 57 dB (A weighted)
Dolby B NR on 66 dB (CCIR)
Dolby c NR on 74 dB (com)
Input sensitivity and impedance
LINE IN 60 rnV/47 k0
Output voltage and impedance
LINE OUT 400 mV/BOOQ
HEADPHONES 125 mV/SQ
(Load impedance ao~eoom
I GENERAL
Power consumption 20 W
Power supply AC 50 Hz/60 Hz, 230 V-240 V

430><135><300 mm
(165/16><55/16><113/i6)

Weight 5.0 kg (11 lb.)

Note:
Specifications are subject to change wrthout notice.
Weight and dimensions are approximate.

Page 2

RS-BX707

I CONTENTS

CONNECTIONS..
ACCESSORIES...
LOCATION OF CONTROLS
DISASSEMBLY INSTRUCTIONS .........................
MEASUREMENT AND ADJUSTMENT METHODS

TERMINAL FUNCTION OF ICS 14
PRINTED CIRCUIT BOARDS 15~18
SCHEMATIC DIAGRAM ...... 19~25
TROUBLESHOOTING 0F DIRECT DRIVE MOTOR 25, 26

TERMINAL GUIDE 0F ICS, TRANSISTORS

AND DIODES..
BLOCK DIAGRAM.
INTERNAL CONNECTION OF FL

I CONNECTIONS

Make connections in the numbered sequence by using the included
cables.

0) Connect the stereo connection cables.

PACKING .....................................
WIRING CONNECTION DIAGRAM
REPLACEMENT PARTS LIST....

EXPLODED VIEWS (Chabinet pans 33, 34
EXPLODED VIEWS (Mechanical parts 35, 36
REPLACEMENT PARTS LIST 37~40
RESISTORS & CAPACITORS. 40~42

>.< TECHNICAL INFORMATION
This technical information is located on pp 45-51 of the
RS-B555 Service Manual (Order No. AD890723105).
Therefore, refer to that Service Manual.
There is a few diferences in this schematic diagram
But this is the same as RS-BSSS basically.

AC power supply cord (®)
The configuration of the AC outlet and AC power supply cord differs
according to area.

Placement hints

Stereo connection cable White (L) If this unit is placed near a receiver or a tuner, a hum" noise
Fled (Fl) fl) may be heard during tape playback, recording, or AM
reception of the receiver or the tuner.
If this occurs, leave as much space as possible between the
® conned the AC Power supply cord" units, or place them where is the least amount of hum.
Receiver or amplifier (not included)
Note:
This unit is a precision instrument. Be sure to place it on a flat
REC PLAY sudace.
DUT BACK
© 3 c («36
© (9 TT © 9 (El
I-l l | l -'
(L)(R)IR)tL)
Household
AC outlet For (EB) area
Cut off and dispose of the plug and replace wlth a
suitable plug.
- "EV-E} Household
This unit AC outlet
(RIILXLIIRI Fit 3 suitable plug to the AC power supply cord.
D @_©
9 , E
LINE IN LINEOUT _ AC|N~
H 1:!
AC power supply cord Stereo connection cables
[(SFDACOSEOS) ..... (EG)] 1 pc (SJP2249-3) .......................... . 2 pcs
(SJA193) , ........... (EB) """" '

Note: Configuration of AC power supply cord differs according to area.