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
(E 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
US 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)
(E model)
output:
Speaker:
Dimensions:
Weight:
Approx.
64(w) x 26 (h) x 143 (H) mm
29/h (w) x 11/16 (h) x 5l1/16 inches
not including projecting parts and controls
Approx. 350 g, 13
oz
including batteries
SONY
SERVICE MANUAL
MIC (mini jack)
Maximum sensitivity: 0.2 mV
(-72dB)
Impedance: Low-impedance
microphone
EARPHONE (mini jack)
Load impedance:
8a earphone or
more than 10 kn
4.5 cm (1 3/4 inches) dia.

7 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
13 kHz, 0 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-

SECTION 6
ELECTRICAL PARTS LIST
Ref. No.
Ref. No. Parr No. Description
- -
PRINTED CIRCUIT BOARD
Part No. Description
l-131-264-11 0.47 2ov
1-131-273-11 0.033 35 v
1-131-264-11 0.47 2ov
l-131-254-11
1 10V
1-131-393-11 47 3.15v
l-131-254-11 1 10v
l-131-177-11 100 6.3V
l-108-373-12 0.0047
100v mylar
1-131-393-11 47 3.15 v
l-l 31-256-11
10 10v
l-l 31-264-11 0.47 2ov
1-131-251-1 1 10 10v
1-131-253-1 1 33 6.3 V
1-131-251-11 4.7 6.3 V
l-102-1 10-11 220 p 5ov ceramic
RESISTORS
Cl1
Cl2
Cl3
C14,15
C16~C18
Cl9
C20
c21
c22
C23
C24
C25
C26
C27
C28
l-584-800-00 Audio Amp
SEMICONDUCTORS
Q1
Transistor 2SC1859
BX283A
BX284
BX285
BX286A
BX287
BX288
BX290
TLR109
S-1Ok
ICl
IC2
IC3
IC4
IC5
IC
IC
IC
IC
IC
IC6
IC7
LED1
Th
IC
IC
Diode
1-800-202-Xx Thermistor
All resistors are in
a, and 1/16 W carbon resistors unless otherwise
noted.
MICROINDUCTOR
Rl
R2
R3
R4
R5
R6
R7~9
RlO
Rll
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
Ll l-407-847-00
35 µH
l-210-353-11
l-224-754-00
l-210-395-1 1
1-246-484-1 1
1-209-773-I 1
68
10 k variable, PB VOL
47
3k
1/8 w
4.7
TRANSFORMERS
Tl
T2
l-433-191-00 Bias Osc
I-427-41 l-00 Record
CAPACITORS l-21 0-840-l 1
I-210-355-11
l-210-846-11
l-210-353-11
l-201-978-1 1
220k
100
33
68
100
1/8 w
composition
All capacitors arc in
µF and of tantalum unless otherwise
noted. (p
= µµF)
Cl l-161-190-1 1 0.001 25 V ceramic
(boundary layer)
35v
4v
10v
6.3V
10v
3.15v
10V
10v
6.3 v
l-210-844-1 1
1-21 O-365-1 1
l-210-360-1 1
l-209-768-1 1
l-210-355-1 1
470k
390
180
2.2k
100
c2 l-l 31-273-1 1
C3
l-131-288-1 1
c4 I-131-254-I 1
C5 l-l 31-251-l 1
0.033
47
4.7
C6 1-131-256-1 1
C7
1-13 l-395-11
C8
l-l 31-256-l 1
c9 1-131-254-l 1
Cl
0 1-131-253-t 1
10
100
10
l-224-727-00 2 k adjustable
l-209-768-1 1
2.2k
l-209-768-1 1 2.2 k
l-210-365-1 1 390
1-210-111-11 12k
33