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1 . P I N C H R O L L E R P R E S S U R E A D J U S T M E N T
Information
Varying pinch roller pressure causes Wow & Flutter.
Refer to Fig. 1. W & F first decreases and then
starts increasing at a certain point as the pressure
increases. The correct pressure for the CT-F9191
(350-4509) was determined by experiments. The
adjustment is required after replacing the pinch
roller.
Adjustment
a. Move out the transport mechanism ass'y so
that you can see the pinch roller. Supply
powQr.
b. Depress the PLAY lever. Apply a 5009 tension
gauge at the measuring point. Push the Gauge
so that the pinch roller is moved out 1 or 2mm
from the capstan. Then, decrease the manual
pressure slowly. Read the value of the gauge
when the pinch roller starts rotating and see
if it is in the range of 350-4509. At this time
there should be a gap between the pinch roller
and the head base.
c. If the pressure is not in the range of 350--4509,
adjust it by changing the hooking posiiion of
the pinch roller spring drive arm.
Photo 2
4.
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F i g - 1
Photo 1
P i n c h R o l l e r P r e s s u r e €
2 B
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