Sony Pressman TCM-929 User manual

TCM-929/939
TCM-929
Canadian Model
AEP Model
UK Model
E Model
Australian Model
TCM-939
Photo: TCM-939
TCM-919
MT-929
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Recording system
2-track 1 channel monaural
Frequency range
150 - 8,000 Hz
Speaker
Approx. 6.6 cm (2% in.) dia.
Power output
400 mW (at 10 % harmonic distortion)
Input
Microphone input jack (minijack) sensitivity 0.775 mV for low
impedance microphone
Output
Earphone jack (minijack) for 8 - 300 ohms earphone
Power requirements
¢ Four size AA (R6) batteries (not supplied): 6V DC
¢DC IN 6 V jack accepts:
Supplied AC power adaptor suitable in the country where the unit
is to be used.
Dimensions (w/h/d) (incl. projecting parts and controls)
Approx. 144 x 60 x 237 mm
5%A~x2%x9I ¥%in.)
Mass (not incl. batteries)
Approx. 675 g (23.9 oz.)
Supplied accessories
AC power adaptor (1)
(US, Canadian and European model only)
Design and specifications are subject to change without notice.
CASSETTE CORDER
SONY.

SECTION 1
This section is extracted from
instruction manual.
Recording
You can record right away with the built-in microphone.
Make sure that nothing is connected to the MIC jack.
TAPE COUNTER and
counter reset button
@ REC
mA STOP/
EJECT
Il PAUSE
1 Press the counter reset button to reset the TAPE COUNTER.
2 Press §& STOP/EJECT to open the cassette holder.
3 Insert a TYPE | (normal) tape with the side to start recording
facing upward, and close the cassette holder.
4 Press @ REC.
- PLAY is depressed automatically.
At the end of the tape, recording stops and the unit turns off
automatically.
To Press
Stop recording M+ STOP/EJECT
Pause recording ti PAUSE
Press the button again to resume recording.
Notes
* You cannot monitor the recording sound.
* For recording, we recommend the use of TYPE I (normal) tapes only. Do
not use TYPE II (CrO2) and TYPE IV (metal) tapes.
Recording with an External Microphone
MIC (PLUG IN POWER)
Connect a microphone of low impedance (not supplied) to the MIC
jack. The built-in microphone is automatically disconnected.
When using a plug-in-power system microphone, the power to the
microphone is supplied from this unit.
GENERAL
Playing a Tape
EAR
bP FF/CUE
<4 REW/REVIEW
p>
PLAY
ms
STOP/
EJECT
Ii PAUSE
VOL
(volume)
1 Press B& STOP/EJECT to open the cassette holder.
2 Insert a TYPE I (normal) tape with the side to start play facing
upward, and close the cassette holder.
3 Press B PLAY then adjust the volume.
At the end of the tape, playback stops and the unit turns off
automatically.
To Press or slide
m@@ STOP/EJECT
Stop playback/stop
fast forward or rewind
HE PAUSE
Press the button again to resume play.
Press and hold >» FF/CUE and release it at the
point you want
Press and hold << REW/REVIEW and release it
at the point you want
Pause playback
Search forward
during playback (CUE)
Search backward
during playback
(REVIEW)
Fast forward bP FF/CUE during stop
Rewind <4 REW/REVIEW during stop
At the end of the tape
All the locked buttons will be automatically released (Full auto
shut-offmechanism).
To listen with an earphone
Connect an earphone (not supplied) to the EAR jack of the unit.
The built-in speaker will be automatically disconnected.

SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
REAR CABINET
@ two screws (BVTP3 x Oe
@ Open the battery case lid.
@ three screws
«—— (BVTP3 x 10)
@ rear cabinet
8 handle
MAIN BOARD
© MAIN board
@ screw (BVTP3 X 8)
\
a
@ screw f JC \
(BVTP3 xX 8) VAL SNA
eo
;
aw
; me @ cord (from HRP101)
Z oe
oy @ MICi101
@ lug, 3
© three cord
(from $102, SP101, M901)

MECHANISM DECK
@ two screws @ spring
(BVTP3
xX
8)
ll
Note on engaging the counter belt
1. Engage temporarily the counter belt to the part @.
2. Install the mechanism deck.
3. . Engage the counter belt to the T reel assembly through
the hole marked with +4 on the front side of cabinet.
T reel assembly ae
CASSETTE LID
@ volume knob
® cassette lid
@ Open the cassette lid.

SECTION 3
ADJUSTMENTS
3-1.
MECHANICAL
ADJUSTMENT
Adjustment
Location:
Reel/Capstan
Motor
(M901)
PRECAUTION
1.
Clean
the
following
parts
with
a
denatured-alcohol-moistened
swab:
ro
6]
record/playback
head
pinch
roller
reel/capstan
motor
erase
head
rubber
belts
(M901)
capstan
Z. Demagnetize the record/playback head with a head demagnetizer.
Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the parts
adjusted.
C
)
5. The adjustments ahould be performed in the rated power supply
voltage unless otherwise noted.
w&
Torque
Measurement
tape
speed
adjustment
Torque
Torque
meter
Meter
reading
27
to
70
gecm
.
Pw)
CQ-102C
(0.37
to
0.98
ozeinch)
Record/Playback
Head
Azimuth
Adjustment
FWD.
1.5
to
5.5
gecm
gee
:
CQ-102C
07
ozei
Setting:
Back
tension
(0.02
to
0.07
ozeinch)
VOL
aanivale
ineohanice
aad?
80
to 156
gecm
FF,
REW
CQ-201B
:
.
(1.12
to
2.1
ozeinch)
Adjustment
Procedure:
1.
Mode:
Playback
3-2.
ELECTRICAL
ADJUSTMENTS
test
tape
P-4-A063
Tape Speed Adjustment (6.3 kHz, — 10 dB)
Setting:
—
|
set
=4
3
VOL
control:
mechanical
mid.
earphone jack
Adjustment Procedure:
1. Mode: Playback
speed checker 2. Turn the adjustment screw for maximum VTVM reading.
LFM-30 Note: Serval peaks may appear, but take the the maximum.
fecueney 3. After the adjustment, lock the screws with locking compound.
counter
WAGER Adjustment Location: Record/Playback Head
(3 kHz, 0 dB)
earphone jack
Specification:
Speed checker Frequency counter
2,910 to 3,090 Hz
adjustment screw