SONY M430
Service Manual

SECTION 3 MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase head pinch roller rubber belts capstan 2. Demagnetize the record/playback/erase 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. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Power supply voltage : 3 Vdc TAPE SPEED switch : 2.4cm/s Torque Measurement Mode Torque Meter Forward Fast Forward Rewind CQ-103M CQ-201M CQ-201M

SECTION 4 ELECTRICAL ADJUSTMENTS
Test Tape Type Signal Used for Tape Speed (cm/s) 2.4 2.4 1.2

S-2-A030 3 kHz, � 20 dB Head Azimuth Adjustment WS-24 3 kHz, � 10 dB Tape Speed Adjustment WS-12

Record/Playback/Erase Head Azimuth Adjustment
Setting: VOL control : mechanical mid TAPE SPEED switch : 2.4cm/s Procedure: 1. Mode : Playback
test tape S-2-A030 (3 kHz, �20 dB) 16 � set EAR jack (J101)

Meter Reading 5 � 13 g � cm (0.07 � 0.180 oz � inch) more than 30 g � cm (more than 0.42 oz � inch) more than 30 g � cm (more than 0.42 oz � inch)

level meter

Tape Tension Measurement Mode Forward Tension Meter CQ-403M Meter Reading more than 20 g (more than 0.28 oz)

2. Turn the adjustment screw to obtain the maximum reading on level meter. Note: Several peaks may appear, but the maximum. Adjustment Location : First remove the cover (AZ).
Remove the cover (AZ).

head azimuth adjustment screw

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