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PINCH ROLLER
3;
22
SPRING(L)
PINCH ROLLER PRESSURE
MEASUREMENT (Refer to Fig. 21)
Put in FWD PLAY mode. Push pinch roller arm down
with the spring gauge push the pinch roller 1 ~ 2 mm
from the capstan and release slowly.
Read the spring gauge at the moment the pinch roller
touches the capstan and bigins to rotate.
Specified contact pressure measurement of 270 to
400 grm.
If there is no measurement
obtained, replace the
pinch roller spring. Do the same for the reverse side.
270 to400grm
{
SPRING GAUGE
Fig. 21
. WINDING TORQUE MEASUREMENT
IN EACH MODE
Insert cassette
torque
meter
and measure
in each
mode. For fast forward and rewind measure at the
end of the tape when the tape has stopped running.
Forward, Reverse:
30 to 55 g-cm
Fast Forward, Rewind:
75 to 130 g-cm
. TAPE SPEED ADJUSTMENT
(Refer to Fig. 18)
Connect a frequency counter to line output termi-
nals.
Playback
a 1,000Hz
pre-recorded test tape (TF-
102CF) and adjust tape speed adjustment volume to
obtain a tape speed of 995 Hz + 5 Hz.
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