AIWA CSDXD55
Service Manual

CSD-XD55 SECTION 4 MECHANICAL ADJUSTMENTS
PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback head pinch roller erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head magnetizer 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 (9V) unless otherwise noted. Torque Measurement
Mode FWD Torque meter CQ-102C Meter reading 2.95 � 6.86 mN � m (30 � 70 g � cm) (0.42 � 0.97 oz � inch) FWD Back Tension CQ-102C 0.15 � 0.53 mN � m (1.5 � 5.5 g � cm) (0.021 � 0.076 oz � inch) more than 5.88 mN � m CQ-201B (more than 60 g � cm) (more than 0.83 oz � inch) more than 5.88 mN � m (more than 60 g � cm) (more than 0.83 oz � inch)

SECTION 5 ELECTRICAL ADJUSTMENTS
TAPE SECTION 0 dB = 0.775 V

� Standard Output Level
Output terminal load impedance output signal level HP OUT 32 � 0.25 V (�10 dB)

� Test Tape
Type WS-48A Signal 3 kHz, 0 dB Used for tape speed adjustment

Tape Speed Adjustment

Procedure: Mode: playback Adjust so that the value on the digital frequency counter is 3,000 Hz.

FF

test tape WS-48A (3 kHz, 0 dB) 32 � set

digital frequency counter

REW

CQ-201B

i jack (J321)

Tape Tension Measurement
Mode FWD Tension meter CQ-403A Meter Reading more than 100 g (more than 3.53 oz)

Specification Value:
Digital frequency counter 2,940 to 3,060 Hz

Adjust so that the frequency at the beginning and that at the end of tape winding are between 2,970 to 3,030 Hz. Adjustment Location:

Tape speed adjustment control inside motor

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