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> TC-K670/K677ES
Note:
Only
perform
this
adjustment
when
the
erasehead is to be replaced.
Tighten @
Tighten @
Loosen
@
Loosen @
(The erasehead as seen when erasing the mirror
cassette.)
Normal
(Height adjustment) Turn screws ®,@, and @ all
by
the
same
angle
so
that
the
portions
of the
erasehead
visible at top and bottom
are nearly
of equal width. If the width at the top is greater,
tighten the screws;
if the width at the bottom
is greater, loosen the screws.
mirror cassette.)
4.
Tape —»
a
Cay
Make
these the same
width.
(Declination
Adjustment)
Leaving
it
in
the
playback position, put the back tension to 0 and
make certain the erasehead part and supply pinch
roller guide part do not shift. If there is a shift,
turn
the
screw ® and change
the declination.
Looking
at it using the mirror
cassette, if the
tape shifts up, tighten the screw, and if it shifts
down, loosen the screw.
Repeat the adjustments beginning with step 2 and
fine adjust the height and declination.
And make
sure the tape does not curl up on the pinch roller
guide or the guide part of the record/playback
head.
(Depth Adjustment) In order to make the entire
head play the tape smoothly, and to make
sure
the depth of the erasehead is neither too shallow
nor too deep, loosen screw @ a bit,
About
0.56 mm
ae
_}
T I
oa
Normal
Erasehead ~~
|
Record/ playback
"fT
|
7
> head
Not deep enough
Too deep
Check
1.
Check
to make
sure that there are no curls or
shifts throughout
the whole
tape path and that
the tape runs smoothly.
2.
Reapply
the locking
compound
to the adjusted
screws.
(The locking compound
should only be
applied to screw © after the azimuth
has been
adjusted.)
TORQUE
MEASUREMENT
Torque
Torque meter
C Q-102C '28-60 g- cm(0, 39-0. 83 02 + inch)
PF, REW| CQ-201B | 85-90 g + cm(0, 9-1. 25 02 « inch)
Meter
reading
Pinch Rolier Pressing
Force Measurement
Mode : playback
Hook needle of the tension gauge to the pinch roller
shaft and push back pinch roller to detach it from
capstan.
Then, return
it gradually
to capstan
and
read the gauge when the pinch roller begins turnning.
Standard Limits :
Tape-up side
.
TC-K570 : 210-320 g(7. 4-11.3 02)
TC-K670/K677ES
: 270-350 g(9. 5-120 02)
Supply side
TC-K670/K677ES
: 180-280 g(6. 4-9.9 oz)
capstan
pinch
roller
tension
gauge
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