Sony bm 570 service manual

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BM-570_

SERVICE MlllluAl

US Model
Canadian Model
AE P Model

UK Model

E Model

SPECIFICATIONS

Tape WERE? Efia (normal posrtlorl type)

Recording system 4-track -channei monaural

Speaker About 2.8 cm (We inches) dia.

Tape speed 2 4 crnls (Wis lps), 1.2 cmls (5/32 lps)

Frequency response 250 to 4.000 Hz (at 24 cm/s)

input Microphone jack (mlnl lack) (PLUG IN POWER):
Sensitivny 0.2 mV, ior low Impedance rnlcrophone

Output Earphone rack (mini rack) for 8 to 300 ohm
earphone

Power oulpur 240mw (at 10% harmonic distortion)

Battery iiie Continuous recording hours with the built~rn
microphone.

About 6.5 hours (average) Wlth alkaline batteries
Power requirements 3V DC two size AAA (R03) batteries, or Sony
BP«48 rechargeable battery pack (not supplied)
DC IN 3V )ack accepts:
~Sony AC-DZM AC power adaptor (not supplred)
lor use on 120V AC, 80 Hz
-Sony DOC-70 car battery cord (not supplleo) ior
use with 12V car battery
Dlmenslons About 61 4 x 115.3 x 22.9 mm (wlh/d)
(2Its x 491m x 29/32 inches) includlng projecting parts
and controls
Weight About 170 g (6 02) including batteries
Accessories supplied Carrying case (1)
Battery tube (1)

Design and specifications subject to change wlthout notice.

Model Name Using Similar Mechanism New Mechanism
Tape Transport Mechanism Type MB-57O

- Simple operation with a slide-type function lever.

- Electronic index signal recording/searching lunction for
locating specific parts of a dictation.

- VOR (voice operated recording) system economizes on tapes,
batteries and your time.

- Microphone sensitivity selector.

- Fast playback for quick review.

- Wide variety of power sources: batteries, rechargeable battery,
AC house current, DC car battery.

- Three-digit tape counter for indexing the tape contents.

. Tapevend alarm

Note: Use only the recommended AC power adaptor
or car battery cord manufactured by Sony. Polarity oi

the plugs of other manufactures may be different.

NOTES ON CHIP COMPONENT REPLACEMENT

0 Never reuse a disconnected chip component.

0 Notice that the minus side of a tantalum capacitor may be
damaged by heat.

MICRUCASSETTE lllclAlllll
S 0 NY;

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BM-57O

NOTE ON REPAIRING (SERVICE MODE)

Soldering TPl or TP2 allows to check the movement of the mechanism deck or repairing on the condition that remove the main
board from mechanism deck.

OTPl : Soldering the pattern that stop the auto»off function

0T P2: Soldering the Pattern that the state of 8107 (FF/REW POWER) is ON.

Note) Setting to the your finger when select the record/playbck ($102)

TPZ
3104

[MAIN BOARD]

Note) Remove the solder brige to finish repairing.