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SECTION 4 MECHANICAL ADJUSTMENTS
PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belts capstan 2. Demagnetize the playback head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head.) 3. The adjustments should be performed with the rated power supply voltage (1.3 V) unless otherwise noted. Torque Measurement
Mode FWD FWD Back Tension REV Torque Meter CQ-102C Meter Reading 1.57 � 2.45 mN�m (16 � 25 g�cm) (0.23 � 0.34 oz�inch) 0.049 � 0.147 mN�m (0.5 � 1.5 g�cm) (0.007 � 0.02 oz�inch) 1.57 � 2.45 mN�m (16 � 25 g�cm) (0.23 � 0.34 oz�inch) REV Back Tension CQ-102RC 0.049 � 0.147 mN�m (0.5 � 1.5 g�cm) (0.007 � 0.02 oz�inch) more than 4.90 mN�m (more than 50 g�cm) (more than 0.7 oz�inch)
SECTION 5 ELECTRICAL ADJUSTMENTS
1. Specified voltage 2. Setting BL SKIP SOUND NORM/MB/GRV AVLS ;NR (WM-EX505 only) PRECAUTION : 1.3 V (DC) : OFF : NORM : OFF : OFF
Test tape
Type WS-48A Signal 3 kHz, 0 dB Used for Tape Speed Adjustment
Tape Speed Adjustment Procedure:
Test tape WS-48A (3 kHz, 0 dB) 16 � frequency counter
CQ-102C
CQ-102RC
set
+ �
i REMOTE jack (J301)
FF, REW
CQ-201B
1. Playback WS-48A (tape center) in the FWD state. 2. Adjust RV601 so that the frequency counter reading becomes 3,000 Hz. Specificated Value: 2,970 to 3,030 Hz 3. Check that deflection of the frequency counter reading between the beginning and the end of tape is within 1.5% (apporox. 45 Hz). Adjustment Location:
� MAIN Board (Side B) �
