Sony M-101 User manual

M-101 (Panel: Silver)

Power Requirements:

Power Consumption:

Power Output:

Recording System:

Tape Speed:

Fast Winding Time:

5 W ac with Sony AC Power Adaptor

AC-31 (US, Canadian model)

7.2 Wac

(50Hz)

6.8 Wac

(60Hz)

with Sony AC Power Adaptor

AC-32

model)

150 mW (max.)

2-track l-channel monaural

2.4 cm/s

(1716

ips)

Approx. 1 minute 30 seconds

with Sony Micro cassette MC-60

Frequency Response: 200

7,000 Hz

Battery Life: Continuous recording hours:

Approx. 2 hours with Sony

long-life battery size-AA

Approx. 4 hours with Eveready

Heavy Duty Battery No. 1215

Approx. 7.5 hours with Eveready

Alkaline Batterv No.

E91

Model

Canadian Model

E Model

M-101B

(Panel: Black)

US Model

MICRO CASSETTE-CORDER

SPECIFICATIONS

3V dc

Battery size-AA Input:

(IEC Designation

R6).

2 pcs

Rechargeable Battery Pack BP-31 (optional)

120 V ac, 60 Hz with Sony AC Power

Adaptor AC-31 (optional) (US, Canadian model)

110, 120, 220 or 240 V ac, 50160 Hz with

Sony AC Power Adaptor AC-32 (optional)

model)

output:

Speaker:

Dimensions:

Weight:

Approx.

64(w)

x 26

(h)

143 (H) mm

29/h

(w)

11/16

(h)

5l1/16

inches

not including projecting parts and controls

Approx. 350 g, 13

including batteries

SONY

SERVICE MANUAL

MIC (mini jack)

Maximum sensitivity: 0.2 mV

(-72dB)

Impedance: Low-impedance

microphone

EARPHONE (mini jack)

Load impedance:

earphone or

more than 10

4.5 cm

3/4

inches) dia.

M-101/101B

3-2. ELECTRICAL ADJUSTMENTS

PRECAUTION

Clean the following parts with a

denatured-alcohol-

moistened swab:

Record/Playback head Pinch roller

Erase head Rubber belts

Capstan Idlers

Demagnetize the record/playback head with a

head demagnetizer.

(Do not bring the head demagnetizer close to

the erase head, and do not use a magnetized screw-

driver for adjustments).

After the adjustments, apply the locking com-

pound to the adjusted parts.

The adjustments should be performed in the order

listed in this service manual.

1. Tape Speed Adjustment

Setting:

Power source: 2.5 V dc

Procedure:

1. Mode: playback

rest rape

WS-24

kHz,

dB)

speed checker (SONY L FM-30

or digital frequency counter

EARPHONE

1) Adjust R18 for 0 % on the speed checker or

3000 Hz on the digital frequency counter.

2) Following specifications should be satisfied with

the power source from 2 V dc to 3.5 V dc.

3) Specifications:

Speed

checker Digital frequency counter

+3%

2.5 %

2925 Hz

3090 Hz

Frequency difference between beginning and

end of tape should be within 1 % (30 Hz).

Adjustment Location:

R18

-6-

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