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SECTION 3.
MECHANICAL ADJUSTMENTS
PRECAUTION
—
1.
Clean
the following
parts with
a denatured-alcohol-
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 performed
with the rated
power supply voltage unless otherwise noted.
6.
Power supply voltage: 9V dc.
Torque Measurement
20—60g*°cm
ae
(0.28—0.83 oz*inch)
cain
inate an Sch
Tape Tension Measurement
Meter Reading
more than 70g
(more than 2.47 oz)
Meter reading
Torque meter
Mode
Tension meter
Forward
CQ-403A
CQ:408R
SECTION 4
ELECTRICAL ADJUSTMENTS
4-1.
TAPE RECORDER SECTION
Standard Output Level
Output terminal
SP OUT
HP OUT
O75 046) _| 025 (—108)
Test Tape
Type
Signal
Tape Speed Adjustment
Setting :
FUNCTION
switch: TAPE
Procedure :
speed checker
Mode:
playback
aise
digital frequency
test tape
counter
WS-48A
(3kHz, OdB)
eo)
320
HEE
-
+
Phones jack
Adjustment Value:
Speed checker
Digital frequency counter
—3% to +3%
2,910 to 3,090Hz
Frequency difference between the beginning and the end of
the tape should be within +1.5% (45Hz).
Adjustment Location :
adjustment resistor (RV401)
(included motor assy (M601))
ay
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