– 9 –
test tape
WS-48A
(3 kHz, 0 dB)
set
32
Ω
2
jack
digital
frequency counte
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 (1.3 V) unless otherwise noted.
Torque Measurement
Mode Torque Meter Meter Reading
15 – 25 g • cm
FWD
CQ-102C
(0.21 – 0.35 oz • inch)
FWD less than 2 g • cm
back tension (less than 0.03 oz • inch)
15 – 25 g • cm
REV
CQ-102RC
(0.21 – 0.35 oz • inch)
REV less than 2 g • cm
back tension (less than 0.03 oz • inch)
more than 50 g • cm
FF, REW CQ-201B
(more than 0.69 oz • inch)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
PRECAUTION
• Supplied voltage : 1.3 V
• Switches and control position
VOL switch : NORM
• Remote control position
HOLD switch : OFF
VOL control : MAX
SOUND mode : NORM
DOLBY mode : OFF
Test Tape
Type Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
Tape Speed Adjustment
Procedure :
Playback WS-48A (tape center part) in the REV state and adjust
RV601 so that the digital frequency counter reading becomes
3,000 Hz.
Specification Value :
Digital frequency counter
2,985 to 3,015 Hz
Playback WS-48A (tape center part) in the FWD state and confirm
that the reading on digital frequency counter are between 2,985
to 3,015 Hz.
Adjustment Location :
RV601
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