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SECTION 4
ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS
Precaution
1. Clean the follwing parts with a denatured-alcohol-moistened
swab :
playback head
pinch roller
capstan
rubber belts
2. Demagnetize the playback head with a head demagnetizer.
Do not use a magnetized screwdriver for the adjustments.
4, The adjustments should be performed with the rated power supply
voltage (2.5 V) unless otherwise noted.
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Torque Measurement
[iets
Toraue metor_]
less than 2 g-cm
CQ-102C
FWD
Back Tension
(less than 0.03 oz-inch)
20-42 g-cm
(0.28-0.58 oz-inch)
CQ-102RC
less than 2 g-cm
(less than 0.03 oz-inch)
Tape Pulling Force Measurement
FWD
CQ-403A
CQ-403R
Meter reading
20-42 g-cm
(0.28-0.58 oz-inch)
more than 60 g-cm
(more than 0.83 oz-inch)
more than 40g
(more than 1.4 oz)
4-2. ELECTRICAL ADJUSTMENTS
Precaution
¢ Supplied voltage : 2.5V
¢ Switch and control position
TAPE switch : NORM
MEGA BASS switch : NORM
VOLUME control : maximum
AVLS switch : NORM
TAPE SECTION
¢ Function switch : TAPE
Test tape
WS-48A
3kHz, 0dB
Tape Speed Adjustment
Tape speed adjustment
test tape
WS-48A
(3 kHz, OdB)
16Q.
FREQUENCY
COUNTER
PHONES
Procedure:
Play back WS-48A (tape center portion) in reverse mode.
Adjust the RV601 so that the frequency counter reads 2,985Hz +
15Hz.
Frequency difference between the begining and the end of the tape
should be within + 1.5%.
Adjustment Location:
RV601
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