SECTION 4SECTION 5
MECHANICAL ADJUSTMENTSELECTRICAL ADJUSTMENTS
PRECAUTION TAPE SECTION 0 dB = 0.775 V
1. Clean the following parts with a denatured-alcohol-moistened
swab :Y Standard Output Level
record/playback headpinch roller
Output terminalHP OUT
erase headrubber belts
capstanidlersload impedance132
2. Demagnetize the record/playback head with a head demagne-output signal level0.25 V (�10 dB)
tizer. (Do not bring the head magnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
Y Test Tape
4. After the adjustments, apply suitable locking compound to the
parts adjusted.TypeSignalUsed for
5. The adjustments should be performed with the rated poWS-48Awer3 kHz, 0 dBtape speed adjustment
supply voltage unless otherwise noted.
Tape Speed Adjustment
Torque Measurement
Procedure:
ModeTorque meterMeter readingMode: playback
30 � 70 g Y cm
FWDCQ-102Cdigital frequency
(0.42 � 0.97 oz Y inch)test tape
counter
WS-48A
FWD1.5 � 5.5 g Y cm
CQ-102C(3 kHz, 0 dB)
Back Tension(0.021 � 0.076 oz Y inch)
32 1
more than 60 g Y cm
FFCQ-201B
(more than 0.83 oz Y inch)set
more than 60 g Y cm
REWCQ-201B
(more than 0.83 oz Y inch)2 jack (J301)
Adjust so that the value on the digital frequency counter is
Tape Tension Measurement3,000 Hz.
ModeTension meterMeter Reading
Specification Value:
more than 100 g
FWDCQ-403A
Digital frequency counter
(more than 3.53 oz)
2,910 to 3,090 Hz
Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,910 to 3,090 Hz.
Adjustment Location:
Tape speed adjustment
control inside motor
� 12 � |
ACEC
