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MK-100
4, Motor speed adjustment
7. Fast forwarding torque Fig. 18
1) Plug a cord into the earphone jack (EAR) and connect a
Normal torque : 60 gr-cm or more
6 ohm resistor in parallel with the cord.
If this is not obtainable,
2) Connect a frequency counter across the terminal of the
1) Clean drive belt, idler and clutch disk tire.
cord,
2) Replace idler ass'y.@
3) While
playing
back
a test 3kHz
tape
(VTT-656)
for
3) Replace clutch disk ass'y. @)
motor
speed adjustment, adjust VR on the E governor
4) Replace drive belt. @)
board
(see
Fig. 16.)
so
that
the
frequency
counter
indicates within 2,970 to 3,060Hz.
8. Rewinding torque Fig. 18
Normal torque : 40 gr-cm or more
If this is not obtainable,
1) Clean belt, idler and pulley.
2) Replace rewind belt. 6)
3) Replace idler. ©
4) Replace pulley. (7)
Slow
Fast
Fig. 16
5. Thrust of Flywheel
The clearance between
the top of flywheel shaft and the
flywheel holder should be within 0.1 to 0.3mm.
If the clearance
is beyond
the limits, adjust the screw for
normal value.
Note:
After adjustment, fix the screw with lock adhesive.
Thrust screw
0.1~0.3mm
Fig. 18
Fig. 17
6. Playback torque Fig. 18
Normal torque : 30~40 gr-cm
If this is not obtainable,
1) Clean drive belt, take-up wheel, and clutch disk tire.
2) Replace clutch disk ass'y. (1)
3) Replace take-up wheel. @)
4) Replace drive belt. 3)
No, 0002
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