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Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
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Received a quick response, material was exactly what it was supposed to be. The service did everything I expected it to do. would use service again.
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Detailed SONY CFD980 Service Manual at an easy to find one stop shopping. Make my radio hobby technically interesting. Thanks.
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Excellent service from Owner-Manuals.com, good prices and quick turn around. The supplied PDF was good enough quality to be enlarged sufficiently to read component values.
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Very complete shop manual. It contains everything needed to troubleshoot bascially any problem. Instructions, diagrams, schmeatics, illustrations... it's all there. Highly recommended!
SECTION 4 MECHANICAL ADJUSTMENTS
1. PRECAUTION Clean the following parts with a denatured-alcahol-moistened sweb : Playback head Pinch roller Rubber belt Capstan Demagnetize the playback head using a demagnetizer. Do not use a magnetized screwdriver for adjustments. After adjusting, apply screw-locking compound onto the adjusted parts. Unless specified otherwise, use a specified voltage (1.3V) to perform the adjustments. 1. 2.
SECTION 5 ELECTRICAL ADJUSTMENTS
PRECAUTION Specified voltage : 1.3V Switch position MENU button : a NR light off (OFF) : AVLS light off (OFF)
2. 3. 4. 5.
TAPE SECTION
Test Tape Type WS-48A
0 dB=0.775 V
Signal 3kHz, 0dB
Purpose Tape Speed Adjustment
Torque Measurement Mode FWD FWD Back Tension REV REV Back Tension FF REW CQ-102RC CQ-102C Torque meter Meter reading 20 to 30 g · cm (0.28 to 0.42 oz · inch) 0.4 to 2.0 g · cm (0.0056 to 0.028 oz · inch) 20 to 30 g · cm (0.28 to 0.42 oz · inch) 0.4 to 2.0 g · cm (0.0056 to 0.028 oz · inch) More than 40 g · cm (More than 0.56 oz · inch)
set
Tape Speed Adjustment Procedure :
Test tape WS-48A (3kHz, 0dB) 16� Frequency counter
+ � 2 REMOTE jack (J701)
1.
CQ-201B
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 2,970 to 3,030 Hz 2. Playback WS-48A (Tape center part) in the REV state. Check that frequency counter reading is within 60 Hz of the reading of step1.
Adjustment Location : [MAIN BOARD] � SIDE A �
RV601 : Tape speed
�7�
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