Read Sony TCS-60DV Service Manual online
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SECTION 4
ADJUSTMENTS
4-2.
ELECTRICAL ADJUSTMENT
1. Perform adjustments on the following conditions unless
otherwise specified.
• Switches and controls positions
• Switches and controls positions
VOL knob ···························································· Maximum
SPEED CONTROL knob ······················· Mechanical center
V•O•R switch ································································ OFF
REC TIME switch ···················································· Normal
SPEED CONTROL knob ······················· Mechanical center
V•O•R switch ································································ OFF
REC TIME switch ···················································· Normal
Test tape
Tape Speed Adjustment
Procedure :
Mode : Playback (FWD)
Procedure :
Mode : Playback (FWD)
Adjust RV602 (standard)/RV603 (double speed) until the frequency
counter reading
becomes 3,000 Hz at the standard mode and 1,500 Hz at the double
speed mode.
counter reading
becomes 3,000 Hz at the standard mode and 1,500 Hz at the double
speed mode.
Specification Value :
Frequency difference between the beginning and the end of the
tape should be within 1% (30Hz).
Upon completion of adjustments, select the REV playback mode
and check that the measurement value is within the specifications.
tape should be within 1% (30Hz).
Upon completion of adjustments, select the REV playback mode
and check that the measurement value is within the specifications.
Adjustment Location :
Test Tape
WS-48A
Used for
Tape speed adjustment
Signal
3kHz, 0dB
4-1. MECHANICAL ADJUSTMENT
PRECAUTION
1.
Clean the following parts with a denatured-alchool-moistened
swab:
swab:
record/playback/erase head pinch roller
head
head
rubber belts
capstans
idlers
2.
Demagnetize the record/playback/erase head with a head
demagnetizer. (Do not bring the head demagnetizer close to
the erase 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.
parts adjusted.
5.
Unless specified otherwise, use a specified voltage (3.0V) to
perform the adjustments.
perform the adjustments.
Torque Measurement
Meter Reading
20 – 35g•cm
0.28 – 0.48 oz•inch
0.5 – 5.0g•cm
0.007 – 0.07 oz•inch
20 – 35g•cm
0.28 – 0.48 oz•inch
0.5 – 5.0g•cm
0.007 – 0.07 oz•inch
more than 40g•cm
more than 0.5 oz•inch
Mode
FWD
FWD
back tension
FWD
FWD
back tension
FF
REW
Torque Meter
CQ-102C
CQ-102RC
CQ-201B
0dB = 0.775V
16
Ω
set
Headphone jack(J303)
+
–
test tape
WS-48A
(3kHz, 0dB)
WS-48A
(3kHz, 0dB)
digital frequency
counter
counter
RV602(NORMAL)
RV603(HIGH)
Digital frequency counter
2,970 – 3,030Hz
1,485 – 1,515Hz
Tape speed
RV602(Normal)
RV603(High)
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