Advertisement
Before replacing the pinch roller, clean the tape contact surface
of the pinch roller and the capstan shaft.
Most causes of poor tape transport can be traced to dirty pinch
roller and capstan shaft.
The pinch roller arm ass'y 9 can be removed by removing the
spring 8 and the slit washer 111.
After replacing, run а padless С-90 tape to check for tape curls
at the tape guide section of the head.
2.
Checking the Pressure Force of the Pinch
Roller
In the playback mode, hook a spring weight onto the bracket at
the center of the pinch roller. After separating the pinch roller
from the capstan shaft, allow the pinch roller to contact the caps-
tan shaft again. Check to make sure the spring weight reads be-
tween 250 — 350 g when the pinch roller starts to rotate. If it is
not within the normal range, replace the spring 8.
Capstan shaft
Pinch roller 一 |
r
250~ 3509
(2) How to assemble the R/P HEAD.
Reverse the above 1 procedures for removing the R/P
HEAD.
"Solder the HEAD WIRE 71 according to the diagram.
4. Adjusting the R/P HEAD 23
Azimuth adjustments
mum and B is minimum.
justments are required.
PB Amp
ыг,
А-ВЕХ
ТСС-153
ell B
шор
Advertisement
