Sony CFS-1085S, Руководство по обслуживанию, Страница: 8 / 32

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CFS-1085S
3-2. ELECTRICAL ADJUSTMENTS
TAPE SECTION
z
Switch location
FUNCTION switch................. TAPE (RADIO OFF)
SOUND SELECT.................... FLAT
VOLUME................................. mechanical center
MEGA BASS............................ OFF
Test Tape
Type Signal Used for
WS-48B 3kHz, 0dB Tape Speed Adjustment
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head pinch roller
erase head rubber belts
capstan
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head demagnetizer close to the erase
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power sup-
ply voltage (9V) unless otherwise noted.
1.Torque Measurement
Mode Torque Meter Meter Reading
2.95 – 6.86 mN•m
Playback CQ-102C (30 – 70 g•cm)
(0.42 – 0.97 oz•inch)
0.15 – 0.53 mN•m
Back Tension CQ-102C (1.5 – 5.5 g•cm)
(0.021 – 0.076 oz•inch)
5.4 – 13.2 mN•m
Rewind
CQ-201B (55 – 135 g•cm)
Fast Forward
(0.77 – 1.87 oz•inch)
2. Tape Tension Measurement
Mode Torque Meter Meter Reading
FWD CQ-403A more than 100g (3.53 oz)
SECTION 3
ADJUSTMENTS
0dB = 0.775 V