– 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
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[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
3,000 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).
– Double (1/2 SPEED) –
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
1,500 Hz.
Specified Value: 1,485 to 1,515 Hz
Adjustment Location:
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
set
i
ack
J301
–
+
32 Ω
– MAIN BOARD (Conductor Side) –
RV603 Tape Speed (Double) Adjustment
RV602 Tape Speed (Normal) Adjustment
J301
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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