SONY WM-FX271FP
Manual de Servicio

WM-FX271FP SECTION 3 MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened swab : playback head pinch lever assy capstan wheel assy rubber belt 2. Demagnetize the playback head with a head demagnetizer. 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 (2.5 V) unless otherwise noted. Torque Measurement Mode FWD Torque meter CQ-102C Meter reading 1.97 to 4.90 mN � m 20 to 50 g � cm (0.28 to 0.69 oz � inch) less than 0.19 mN � m less than 2 g � cm (less than 0.03 oz � inch) more than 5.89 mN � m more than 60 g � cm (more than 0.83 oz � inch) Tape Speed Adjustment Procedure:
test tape WS-48A (3 kHz, 0 dB) 16 � set digital frequency counter

SECTION 4 ELECTRICAL ADJUSTMENTS
PRECAUTION
� Supplied voltage : 2.5V � Switch and control position VOLUME control : maximum AVLS switch : NORM � Test Tape Type WS-48A Signal 3 kHz, 0 dB Used for tape speed adjustment

TAPE SECTION

0 dB = 0.775 V

FWD Back Tension

CQ-102C

0000

FF, REW

CQ-201B

i jack (J301)

1. Playback WS-48A (tape center part) in the FWD state and adjust RV601 so that the frequency counter reading becomes 3,000 Hz. Specification Value: Digital frequency counter 2,910 to 3,090 Hz Adjustment Location:

RV601

7