— 8 —
SECTION 3
MECHANICAL ADJUSTMENTS
SECTION 4
ELECTRICAL ADJUSTMENTS
Torque Meter
CQ-403A
Meter Reading
more than 170 g
(more than6.00 oz)
PRECAUTION
1. Clean the following parts with a denatured alchool-moistened
swab:
record/playback head
pinch roller
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/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. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be perfomed with the rated power supply
voltage unless otherwise noted.
Torque Measurement
Tape Tension Measurement
Meter Reading
25 – 60 g
•
cm
(0.35 – 0.83 oz
•
inch)
1 – 5 g
•
cm
(0.014 – 0.069 oz
•
inch)
25 – 60 g
•
cm
(0.35 – 0.83 oz
•
inch)
1 – 5 g
•
cm
(0.014 – 0.069 oz
•
inch
55 – 140 g
•
cm
(0.76 – 1.94 oz
•
inch)
55 – 140 g
•
cm
(0.76 – 1.94 oz
•
inch)
Mode
Forward
Forward
back tension
REV
REV
back Tension
Fast
Forward
Rewind
Torque Meter
CQ-102C
CQ-102C
CQ-102C
CQ-102C
CQ-201B
CQ-201B
Mode
Forward
4-1.
TAPE SECTION
Standard output level
Test tape
Tape Speed Adjustment
Procedure :
Mode : Playback
1. Playback the test tape in the FWD playback mode.
2. Confirm that the digital frequency counter reading indicates a
value in the range of 2,940 to 3,060 Hz at tape top.
3. If the specification is not satisfied, adjust variable resistor of
motor (M901) until the frequency counter reading is as close to
3,000 Hz as possible at the FWD tape top.
Specification : 2,940 to 3,060 Hz
4. Frequency difference between the beginning and the end of the
tape should be within 1.5% (45Hz).
Adjustment Location :
0dB = 0.775V
Test Tape
WS-48B
P-4-A063
Used for
tape speed adjustment
head azimuth adjustment
Signal
3kHz, 0dB
6.3 kHz, -10 dB
HP OUT
32
Ω
0.25 V (–10 dB)
Output terminal
Load impedance
Output signal level
0000
phones jack
digital frequency
counter
set
32
Ω
test tape
WS-48B
(3 kHz, 0 dB)
TAPE
SPEED
ADJ.
(M901)
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TEL 13942296513 QQ 376315150 892498299
