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| TC-K222ESG/K850ES
(Preliminary Azimuth
Adjustment)
3.
(Height adjustment) Turn screws ®,@, and @ all
After demagnetizing and cleaning the adjustment
by the same
angle so that the portions
of the
head, play back WS-48B
(3 kHz, 0 dB).
erasehead
visible at top and bottom
are nearly
Turn
screw
@ so
that
the
reading
on
the level
of equal width. If the width at the top is greater,
meter
of the unit
or
that
of the level
meter
tighten the screws;
if the width at the bottom
connected
to LINE OUT
is maximized.
is greater, loosen the screws.
If the screw
. turned
at least half a revolution,
Erasehead
(The
erasehead
as
seen
through
the
repeat the adjustments
from step 1.
:
mirror
cassette.)
6.
(Tape
Path
Check)
Connect
the oscilloscope
to
LINE OUT and play back P-4-A100 (10 kHz, -10
a
a
dB) to display a resurge
waveform.
After 20
seconds
of record/playback
(after the tension
within the loop has been increased sufficiently),
make sure the variation in the resurge is within
+ 90 degrees (within + 45 degrees is desired).
If the variation is greater than this, it is because
the declination and/or
the height adjustment
is
A,
not perfect.
Repeat the adjustments from step 1.
Tape —»
Se ee
aes
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.
5.
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.
6.
(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.
test tape
P-4-100S
:
(10 kHz, —10 dB)
Oscilloscope
L-CH
47kQ
UNE
CUT
Oscilloscope Resurge Waveform
OOAO®VO®
In Phase
45°
eee
ee,
180°
eer
he
Good
Bad,
a
Gal
0.56 mm
Note: Only
perform
this adjustment
when
the
Normal
TO
erasehead
is to be replaced.
i
head
1.
Insert
the mirror
cassette
and put the unit in
record/ playback mode.
|
2.
(Azimuth Adjustment) Adjust the azimuth of the
Not deep enough
Too deep
erasehead by adjusting screws
@ and @ so that
the tape runs
as evenly
as possible.
pay
be
—
|
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
e
:
;
screws.
(The locking compound
should only be
Normal
Tighten @
Tighten @
applied
to screw
© after
the
azimuth
has
been
Loosen
@
Loosen @
adjusted.)
(The erasehead as seen when erasing the mirror
cassette.)
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