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2 . R E E L . B A S E T O R O U E A D J U S T M E N T
lnformation
The take-up reel should wind up the tape without
twisting or tangling in Play or Fast Forward and
provides back tension so that it does not slack
during Rewind. The supply reel base also should
provide a bit of back tension so that the tape
does not slack and runs closely on the head surface
during Play. If the torque of the reel base is im=
proper, there will be troubles such as high W & F,
rough rotation, high tape wear, etc.
Required Torque of Reel Bases
Tab le 1
cT-Fs'1 s|,|
Adjustment
As CT-F9191 has no reel base torque adjustment
mechanism, measure the torque of both bases. If
the values are outside of the tolerances shown in
Fig. 1, clean the idlers, reel bases, rollers, etc. with
a cotton-headed
stick soaked in absolute alcohol
and measure them again. If there is no improve-
ment, replace the reel bases.
Photo 3
Photo 4
Take-up reel base
T a k e - u p t o r q u e w h e n P l a y i n g
T a k e - u p t o r q u e w h e n F a s t F o r w a r d i n g
B a c k t e n s i o n w h e n R e w i n d i n g
40 - 65 gcm
75 - 130 gcm
le s s th an 8 g cm
Supply reel base
B a c k t e n s i o n w h e n P l a y i n g
B a c k t e n s i o n w h e n R e w i n d i n g
T a k e - u p t o r q u e
4 - 8 g c m
more than 8 gcn
75 - 130 gcm
2 g
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