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SECTION 3 MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured alcohol-moistened swab : record/playback head capstan idlers playback head pinch roller erase head rubber belts 2. Demagnetize the record/playback 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. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement DECK A Mode Forward Torque meter CQ-102C DECK B Meter reading 2.21â 5.39 mN â¢ m (22.5 to 55 g â¢ cm) (0.31 to 0.76 oz â¢ inch) 0.20 â 0.49 mN â¢ m (2 to 5 g â¢ cm) (0.03 to 0.07 oz â¢ inch) 5.88 â 11.77 mN â¢ m (60 to 120 g â¢ cm) (0.83 to 1.67 oz â¢ inch)
SECTION 4 ELECTRICAL ADJUSTMENTS
TAPE SECTION 0 dB = 0.775 V
PHONES OUT 32 â¦ 0.25 V (â10 dB)
Standard Output Level Output terminal SP OUT load impedance output signal level Test Tape Tape WS-48B P-4-A063 6â¦ 0.775 V (0 dB)
Signal 3 kHz, 0 dB 6.3 kHz, â10 dB
Used for tape speed adjustment head azimuth adjustment DECK B
REC/PB Head Azimuth Adjustment DECK A Procedure: 1. Mode: playback
test tape P-4-A063 (6.3 kHz, â10 dB) 32 â¦ set J901 (phones)
Forward back tension Fast Forward and Rewind
2. Turn the adjustment screw for the maximum output levels. If these levels do not match. Turn the adjustment screw until both of output levels match together within 1 dB.
Tape Tension Measurement DECK A Mode Forward Tension meter CQ-403A
L-CH peak within 1 dB
Meter reading more than 150 g (more than 5.29 oz)
within 1 dB
R-CH peak L-CH peak R-CH peak angle
Complete owner's manual in digital format. The manual will be available for download as PDF file aft…