Sony tcm 38 v service manual

Page 1

SHERICMANVAL

US Model
Canadian Model
AE P Model

UK Model

E Model

SPECIFICATIONS

Recording system
Frequency response

Power output (DC)

Input

Output

Power requirements

Battery life

2-track 1~channel monaural

2008.000 Hz (For normal

tape TYPE I)

Speaker: 180 mw (at 10%

harmonic distortion)

Microphone input lack

(miniiack) sensitivity

0.2mVI for am or lower

impedance microphone

Earphone jack (minijack)

tor a - 300 Q earphone

3V Dc. two slze AA (RS)

batteries

DC IN 3V jack accepts:

- Sony AGDZM AC power
adaptor (not supplied) tor
useon120VAC,60 Hz

0 Sony DOC-70 car battery
cord (not supplied) for
use on 12 V car battery

(hours)

Model Name Using Similar Mechanism TCM-R2

Tape Transport Mechanism Type MT-38V-06

Batteries

Recording

Sony batteries SUMG (NS) Approx 2

Sony alkaline batteries AM3 (N) Approx. 7

Dimensions

Weight

Approx. 90.9 x1345 x 35.8
mm(wlhld)

(35/. x 55/. x 1%. inches)
incl. projecting pans and
controls

Approx. 3209 (11.3 oz)
incl. batteries

Note

Use only the recommended AC power adaptor
or car battery cord manufactured by Sony.
Polarity of the plugs of other manufacturers may

be different.

Polarity of the TOM-33V plug

Design and specifications subject to change
without notice.

cAssmE-cuRVER
S 0 NY;

Page 2

TC M-38V

FEATU R ES

0 TIR (Time Index Recording) function shows the date and time at
recording on the display window during tape playback.

0 VOR (Voice Operated Recording) system economizes on tapes,
batteries and your time.

0 Higit tape counter helps you to locate a desired portion on the tape.

0 You can start recording directly from the playback mode. This
lunction is convenient to correct a previously recorded portion.
0 Automatic shutoff mechanism

What Is TIR (Time Index Recording) function?

The current date and time at your recording is automatically
memorized on the tape during recording.

When you play back the tape, the recorded date and time appear on
the display window. You can easily identify the tape on which a
conterence or a lecture is recorded relerring to your diary or
memory.

What Is VOH (Voice Operated Recording) system?
With this system, recording starts only when sound is picked up and
stops automatically when sound is no longer detected.

Flexible Circuit Board Repairing

OKeep the temperature of the soldering iron around
270'C during repairing.

0 Do not touch the soldering iron on the same con-
ductor of the circuit board (Within 3 times).

0 Be careful not to apply force on the conductor when
soldering or unsoldering.

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

TABLE OF CONTENTS

Section Title Page
1. GENERAL

1-1. Parts Identification ................................ 3
1-2. How to Set the Date/Time .......................... 3

2. DISASSEMBLY
2-]. Rear Cabinet Assy. .
2-2. Cassette Lid Assy .......................

2-3. Audio Board ...................................... 5
2-4 Tape Transport Mechanism . .5
3. MECHANICAL ADJUSTMENTS .................... 5
4. ELECTRICAL ADJUSTMENTS .................... 6

Section Title Pge
5. DIAGRAMS

5-1. Semiconductor Lead Layout ......... . . .9
5-2. Printed Wiring Boards ........................... 10
5-3. Schematic Digram ................................ 13
6. EXPLODED VIEWS

6-1.
6-2.
6-3.
6-4.
6-5.

7.

Cabinet .......................... . . 17

Audio Board ................................... 18
Tape Transport Mechanism 1 ................... 19
Tape Transport Mechanism 2 ................... 20
Tape Transport Mechanism 3 ...................... 21
ELECTRICAL PARTS LIST ...................... 22