– 8 –
Meter reading
more than 30 g
(more than 0.41 oz)
Torque meter
CQ-403A
CQ-403R
Meter reading
20 – 42 g•cm
(0.28 – 0.58 oz•inch)
less than 2 g•cm
(less than 0.03 oz•inch)
20 – 42 g•cm
(0.28 – 0.58 oz•inch)
less than 2 g•cm
(less than 0.03 oz•inch)
more than 50 g•cm
(more than 0.69 oz•inch)
Torque meter
CQ-102C
CQ-102RC
CQ-201B
3-1. MECHANICAL ADJUSTMENTS
Precaution
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
capstan rubber belt
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage (2.5 V) unless otherwise noted.
Torque Measurement
SECTION 3
MECHANICAL ADJUSTMENTS
Tape Pulling Force Measurement
SECTION 4
ELECTRICAL ADJUSTMENTS
Precaution
• Supplied voltage: 2.5 V
• Switch and control position
NORM CrO2/METAL switch: NORM
VOLUME CONTROL: maximum
TONE CONTROL HIGH and LOW: mechanical center
AVLS switch: NORM
MEGA BASS switch: OFF
DOLBY NR switch: OFF
Test tape
0 dB = 0.775 V
Tape Speed Adjustment
Procedure:
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
+
–
frequency counter
set
2
jack
16
Ω
test tape
WS-48A
(3 kHz, 0 dB)
1. Playback WS-48A (tape end part) in the REV mode and adjust
RV601 so that the frequency counter reading becomes 2,980
Hz ± 1%.
2. Playback WS-48A (tape top part) in the FWD mode and check
that the frequency counter reading becomes 2,980 ± 45 Hz.
3. Playback WS-48A (tape end part) in the FWD mode and check
that the frequency counter reading recomes 2,980 ± 45 Hz.
4. Playback WS-48A (tape top part) in the REV mode and check
that the frequency counter reading becomes 2,980 ± 45 Hz.
Adjustment Location:
RV601
label (model)
Mode
FWD
FWD
Back Tension
REV
REV
Back Tension
FF, REW
Mode
FWD
REV
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