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Function
5. Set XADJ SW to "OFF" side.
6. Insert a 50 Auto disk, and turn the
MOTOR ON
switch
of
IF
Board
52/53 off and then on •.
7.
Set XADJ switch to "ON" side.
8. Turn the stepping motor with the
Radial
Alignment
Adj.
driver
as
shown
in
Fig. 5-1 (b)
until
the
amplitude ratio of left and right
peaks becomes
equal.
(Refer to
Fig. 5-1
(a»
Note: When the ratio of left and right
peaks is within the specification,
wave lines become red color.
9.
When
the
adjustment
does
not
satisfy the specification (wave lines
do not become red color), move the
head innerwards or outerwards by
pushing the arrow key
G8
or
~ •
Note:!i:]move the head innerward.
EIl
move the head outerward.
Note: If
adjustment
of
the stepping
motor cannot be conducted, first
find the appropriate position in
accordance with the followings,
and
perform
the
adjustment
again.
U) When the eat's eye pattern
is similar to Fig. 5-1
(c)
or
(cD,
turn the Radial Alignment
adj. driver clockwise.
(2) When the eat's eye pattern
is similar to Fig. 5-1 (e) or
(0, turn the Radial Alignment
Adj. driver counterclockwise.
ICe in
Dis la
I
RETURN
I
Set MOTOR ON SW to ON and insert Alignment
Disk.
Set XADJ SW to ON.
I
RETURN
I
==
P RE ADJUSTMENT
=
Fig.
5·1
(a)
Radial Alignment
Adj. Driver
Fig.
5·1
(b) Radial Alignment Adjustment
10.
Hit
I
RETURN
I
key.
I
RETURN
I
Fig.
5·1
(c)
Fig.
5·1
(d)
Note: Unless
the wave line becomes
red color, the next step cannot
be executed even if
I
RETURN
I
key is depressed.
-42-
Fig.
5·1
(e)
Fig.
5·1
(f)
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