12
WM-FX522
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
TAPE SPEED ADJUSTMENT
Setting:
Function: TAPE
Procedure:
1. Playback WS-48A (tape center) in the FWD state.
2. Adjust RV601 so that the frequency counter reading becomes
3,000 Hz.
Specification Values: 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% (approx.45
Hz).
4. Playback WS-48A (tape center) in the REV state.
Check that the frequency counter reading is within 2%
(approx.60 Hz) of the reading of step 1.
Adjustment Location: MAIN BOARD (See page 13)
PRECAUTION
1. Specified voltage: 1.3 V (DC)
2. Setting
MB : OFF
AVLS : OFF
BL SKIP : OFF
MODE : s
VOLUME : MAX
HOLD : OFF
TAPE DECK SECTION 0 dB=0.775 V
TEST TAPE
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
+
–
set
Test tape
WS-48A
(3 kHz, 0 dB)
frequency counte
16 Ω
i jack (J301)
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)
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