Sony tcm 81 service manual

Page 1

TCM-81/83/8'l

SERVICE MANUAL

US Model
E Model

TOM-81

Canadian Model

TOM-83

AEP Model
UK Model

TCM~83/ 87
Photo : TCM-87
Model Name Using Similar TCMVII, 31
Mechanism TCMv13. 33
. TCM»81 MT-81-l3
Tape Transport Mechanism Type
TCM783/87 MT'83vI3
SPECIFICATIONS
Recording system 2-track lvchannel monaural Battery life Battery Recording hours
Frequency response ISO-6.000Hz Son batter
Speaker Approx. 4cm (1%inches) dia Slez-S (N3; Approx 4
Power output (DC) ISOmW (at 10% harmonic distortion) Son alkaline battery
Input (except Tomes/87) AM; (N) Approx. 12
Microphone Input/Jack (mlgljack) NC-AA Rechargeable A 4
sensmvrty 012'." for 8k or lower banew (TOM-87) porox.
Impedance microphone
Output Earphone jack (minijack) for 8~3OOQ Dimensions TCM78I :Approx.
earphone 1363X 948 X40.5mm (w/h/d)
Power requirements 3V DC. two R6 (size AA) batteries (5%X3%><1%inch65)
two NCvAA rechargeable batteries TCM-83/872Approx.
(1.2V) (supplied to TOM-87). DC lN 137.2X94.8><40.5mm (w/h/d)
3V jack accepts : (SI/1X3% X 1 %inches)
. Sony ACVDZM AC power adaptor incl. projecting parts and controls
(not supplied). or the AC power Weight TCM-81 :Approx 2519 (8.9 oz)

adaptor supplied to TCM-87 for use

on I
AEP 220V AC, 50H:
UK 240V AC, 50H:

. Sony DCCv7O car battery cord (not
supplied) for use with 12V car
battery

TCM783/87 : Approx, 2529 (8.9 oz)
incL batteries

Battery tube (1), AOpower adapter (1)
(TCMV87 only).

Battery charge adaptor (1) (TOM-87
only). Rechargeable battery (2) (TCM»87
only)

Design and specifications subject to change without notice.

CASSETTE-CBRDER

SONY.

Supplied accessories

Page 2

TCM-81 83/87

Note
This appliance conforms with EEC Directive 87/ 308/ EEC
regarding interference suppression.

Note: If an AC power adaptor or a car battery cord not
manufactured by Sony is used. a fuse must be
installed in the battery cord and the polarity of the
plug must be as illustrated.

M

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SECTION 1 _ . .
This section is extracted from
GENERAL instruction manual.

PARTS IDENTIFICATION

E

[Z] EAR (EARPHONE) lack
E] Built-In microphone

Tape operation buttons
0 FIEC (record)/V PLAY/l STOP] ; FF/CUE (last
forward/cue)! f HEW/REVIEW (rewind/review)

El PAUSE swltch
El Hand strap

TAPE COUNTER and reset button (TCMS/M)
For indexing the tape contents. Before recording
push the reset button to set the counterJ to "000".

E] Cassette holder

IE Speaker (lront)

E] MIC PLUG IN POWER (external microphone)

[E DO IN 3 V (external power Input) jack (right side)
IE Battery compartment (right side)

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SERVICE NOTE

- Repairing printed resistor
Cut both sides of the resistor and solder the
carbon resistor having same value in place of
printed one of the conductor side.
1/32W carbon resistor is supplied for the

replacing part of the printed resistor.

Notes on chip component replacement
- Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor

may be damaged by heat.