– 12 –
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 Torque Meter Meter Reading
1.57 – 2.45 mN•m
FWD CQ-102C (16 – 25 g•cm)
(0.23 – 0.34 oz•inch)
FWD
0.049 – 0.147 mN•m
Back Tension
CQ-102C (0.5 – 1.5 g•cm)
(0.007 – 0.02 oz•inch)
1.57 – 2.45 mN•m
REV CQ-102RC (16 – 25 g•cm)
(0.23 – 0.34 oz•inch)
REV
0.049 – 0.147 mN•m
Back Tension
CQ-102RC (0.5 – 1.5 g•cm)
(0.007 – 0.02 oz•inch)
more than 4.90 mN•m
FF, REW CQ-201B (more than 50 g•cm)
(more than 0.7 oz•inch)
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
Tape Speed Adjustment
Procedure:
PRECAUTION
1. Specified voltage : 1.3 V (DC)
2. Setting
BL SKIP : OFF
SOUND NORM/MB/GRV : NORM
AVLS : OFF
;NR (WM-EX505 only) : OFF
Test tape
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:
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
+
–
set
Test tape
WS-48A
(3 kHz, 0 dB)
frequency counte
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