– 7 –
0000
2
jack (J301)
digital frequency
counter
set
16
Ω
test tape
WS-48A
(3 kHz, 0 dB)
PRECAUTION
• Supplied voltage : 2.5V
• Switch and control position
VOLUME control : maximum
AVLS switch
: NORM
• Test Tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
tape speed adjustment
TAPE SECTION 0 dB = 0.775 V
Tape Speed Adjustment
Procedure:
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
playback head
pinch lever assy
capstan wheel assy
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
Mode
Torque meter
Meter reading
FWD
CQ-102C
20 – 42 g • cm
(0.28 – 0.58 oz • inch)
FWD
CQ-102C
less than 2 g • cm
Back Tension
(less than 0.03 oz • inch)
FF, REW
CQ-201B
more than 60 g • cm
(more than 0.83 oz • inch)
SECTION 4
ELECTRICAL ADJUSTMENTS
SECTION 3
MECHANICAL ADJUSTMENTS
1. Playback WS-48A (tape center part) in the FWD state and
adjust RV601 so that the frequency counter reading
becomes 3,000 Hz.
Specification Value:
Digital frequency counter
2,985 to 3,015 Hz
Adjustment Location:
RV601
