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SERVICE MANUAL
CASSETTE-CORDER
US Model
TCM-20DV/21DV/22DV/23DV
Canadian Model
TCM-20DV/22DV
AEP Model
TCM-20DV/21DV
E Model
TCM-20DV/23DV
Chinese Model
TCM-20DV
SPECIFICATIONS
TCM-20DV/21DV/
22DV/23DV
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MT-20DV-118
Photo: TCM-20DV
Supplied accessories
The instructions in this manual are for
4 models.
The TCM-20DV is the model used for
illustration purposes.
TCM- 23DV 22DV 21DV 20DV
AC power adaptor (1)
— a ——
Battery charger adaptor (1)
— a ——
Rechargeable batteries (2)
— a ——
(NC-AA, 1.2V, 700mAh,
Ni-Cd)
Cassette tape C-90 (1)
——a —
Battery LR6 (2)
——a —
Monaural microphone (1)
——a —
Super-directional
a ———
microphone (1)
Carrying pouch (1)
——a —
Hand strap (1)
aaaa
(attached to the unit)
Battery life
(Approx. hours) (EIAJ*)
Playback Recording
Sony alkaline
LR6 (SG)
11 11
Sony R6P (SR) 3 3
Sony
rechargeable
battery
33
(NC-AA) fully
charged (TCM-
22DV only)
* Measured value by the standard of
EIAJ (Electronic Industries
Association of Japan). (Using a Sony
HF series cassette tape and playing
back with speakers)
Note
The battery life may shorten
depending on the operation of the
unit.
For maximum performance we
recommend that you use alkaline
batteries.
House Current
(see Fig. A- )
Connect the AC power adaptor to
DC IN 3V and to a wall outlet. The
AC power adaptor is supplied only
with the TCM-22DV. For other
models, use the AC-E30HG AC
power adaptor (not supplied). Do
not use any other AC power
adaptor.
Polarity of
the plug
Note
Specifications for AC-E30HG vary for
each area. Check your local voltage
and the shape of the plug before
purchasing.
Recording system
2-track 1 channel monaural
Tape speed
4.8 cm/s or 2.4 cm/s
Frequency range
250 - 6,300 Hz using nomal (TYPE
I) cassette (with REC TIME switch
at “NORMAL”)
Speaker
Approx. 3.6 cm (1
7
/
16
in.) dia.
Power output
250 mW (at 10 % harmonic
distortion)
Input
Microphone input jack (minijack)
sensitivity 0.2 mV for 3 kilohms or
lower impedance microphone
Output
Earphone jack (minijack) for 8 - 300
ohms earphone
Variable range of the tape speed
From approx. +30% to –15% (with
REC TIME switch at “NORMAL”)
Power requirements
3 V DC batteries R6 (AA) × 2/
External DC 3 V power sources
Dimensions (w/h/d) (incl. projecting
parts and controls)
Approx. 112 × 36.6 × 90.3 mm
(4
1
⁄
2
× 1
1
⁄
2
x 3
5
⁄
8
in.)
Mass
Approx. 175 g (6.2 oz.)
Design and specifications are subject
to change without notice.
Ver 1.0 2000. 02