Read Sony TCS-100DV Service Manual online
– 11 –
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback/rec/erase head
pinch roller
rubber belts
capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
(Do not bring the head demagnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
4. The adjustments should be performed with the rated power
supply voltage (1.3 V) unless otherwise noted.
Torque Measurement
Mode
Torque Meter
Meter Reading
1.57-2.45 mN•m
FWD
(16 – 25 g•cm)
CQ-102C
(0.23 – 0.34 oz•inch)
FWD
0.05-0.14 mN•m
(0.5 – 1.5 g•cm)
Back Tension
(0.007 – 0.02 oz•inch)
1.57-2.45 mN•m
REV
(16 – 25 g•cm)
CQ-102RC
(0.23 – 0.34 oz•inch)
REV
0.05-0.14 mN•m
(0.5 – 1.5 g•cm)
Back Tension
(0.007 – 0.02 oz•inch)
more than 4.91 mN•m
FF, REW
CQ-201B
(more than 50 g•cm)
(more than 0.7 oz•inch)
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
PRECAUTION
1. Specified voltage
: 1.3 V (DC)
2. Setting
SPEED CONTROL dial
: center click
0 dB=0.775 V
Test tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
Tape Speed Adjustment
Setting:
Procedure:
– Normal –
1. Set the
– Normal –
1. Set the
[REC TIME]
switch (S1) to
[NORMAL]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV602 so that the frequency counter reading becomes
3. Adjust RV602 so that the frequency counter reading becomes
3,000 Hz.
Specified Value: 2,970 to 3,030 Hz
4. Check that deflection of the frequency counter reading between
the beginning and the end of tape is within 1.5% (approx. 45
Hz).
Hz).
– Double (1/2 SPEED) –
1. Set the
1. Set the
[REC TIME]
switch (S1) to
[DOUBLE]
position.
2. Playback WS-48A (tape center) in the FWD state.
3. Adjust RV603 so that the frequency counter reading becomes
3. Adjust RV603 so that the frequency counter reading becomes
1,500 Hz.
Specified Value: 1,485 to 1,515 Hz
Adjustment Location:
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
set
i
jack (J301)
–
+
32
Ω
– MAIN BOARD (Conductor Side) –
RV603 Tape Speed (Double) Adjustment
RV602 Tape Speed (Normal) Adjustment
J301
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