Technics RSBX 727 Service Manual

Page 1

ORDER NO. A09204103A2

Service Manual

Dolby NR-Equipped Cassette Deck

Stereo Cassette Deck R S- BX? 27

*
DD DOLBY B-C NR Hx PRO Colour

(K) Black Type

Area
Suffix for
Model No. Area Colour
(EB) Great Britain.
Germany and ItalyJ (K)
(EG)
Europe.

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

- Please file and use this simplified manual together with the service manual for Model No. RS-BX707,
Order No. AD9106170C2.

o This service manual indicates the main ditferences between Original RS-BX707.

ICHANGE IN REPLACEMENT PARTS LIST (on pages 32, 38~40, 42.)

Notes: - Mentioned in this parts list is only those different from Model No. RS-BX707 (EG).
All other parts are the same as for RS-BX707 (EG).
- Important safety notice:
Components identified by A mark have special characteristics important for safety. Furthemore,
special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low»noise
(resistors), etc. are used. When replacing any of components, be sure to use only manufacturers
specified parts shown in the parts list.

Change of Part No.
Ref. No. Part Name & Description Remarks
RS-BX707 (EG) + RS-BX727 (EB, EG)
TRANSISTOR(S)
QSOS~507 KSBSS4ACYGTA 2SBG21A-R TRANSISTOR
0510 KSB56'4ACYGTA 258621A-R TRANSISTOR
0606 KSBSGAACYGTA 2SBGZ1A-R TRANSISTOR
0903 KSBSGAACYGTA 253621A-R TRANSISTOR
SENSOR(S)
Z701 I - RCDHC-27B REMOTE SENSOR Addition

Technics

Page 2

ORDER NO. ADQ10617OCZ

Service Manual

Dolby NR-Equipped
Stereo Cassette Deck

DD-

* HX Pro headroom extension originated by Bang Olufsen
and manufactured under license from Dolby
Laboratories Licensing Corporation.

DOLBY, the double-D symbol, and HX PRO" are
trademarks of Dolby Laboratories Licensing
Corporation.

RS-TR555 MECHANISM SERIES (AR350)

SPECIFICATIONS

I CASSETTE DECK SECTION
Deck system
Track system

Stereo cassette deck
4-traok, 2-channel

Recording system AC bias
Bias frequency 80 kHz
Erasing system AC erase
Heads
Recording head [Permalloy (Combinationnx 1
Playback head [Permalloy (Combinationfl x1
Erasing head (Double-gap lerrite)x1
Motors
Capstan drive (Quartz DD motor)x1
Fteel table drive (DC motor)x1
Cassette holder open/close (DC motor)x1
Tape speed 4.8 cm/sec. (We ips)

Wow and flutter 0.05% (WRMS)
:o,14% (DIN)
Fast forward and rewind time
Approx. 100 seconds with C-GO cassette tape
Frequency response (Dolby NR oft)
NORMAL 30 Hz~17 kHz. 1-3 dB
20 Hz~18 kHz (DIN)
CrOz 30 Hz~18 kHz. :3 dB
20 Hz~19 kHz (DIN)
30 Hz~19 kHz, i3 dB
20 Hz~20 kHz (DIN)

E Technics.

METAL

Cassette Deck

RS-BX707

Color

(K)...B|ack Type
Area

Country
Code

(EB) Great Britain.

Area Color

F.Fl. Germany and (K)
(EG) Italy/Continental
Europe.

SIN (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 (CCIR)
Input sensitivity and impedance

LINE IN 60 mV/47 k0
Output voltage and impedance

LINE OUT 400 mV/8OOQ

HEADPHONES 125 mV/BQ
(Load impedance 80~600m

I GENERAL
Power consumption 20 W
Power supply AC 50 Hz/SO Hz. 230 V-240 V

Dimensions (WXHXD) 430x135x300 mm
(l65/(6X55/(5"><113/16)

Weight 5.0 kg (11 lb.)

Note:
Specifications are subject to change without notice.
Weight and dimensions are approximate,