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5.~.4
Head alignment adjustment
1)
Equi pment
CE Tester
CE Diskette (DYMEK 502-10 STANDARD DISKETTE)
No. 1 screw driver
Oscilloscope
Hex wrench (1.5mm dia.)
2)
Adjustment procedure
2)-1 Connect CE Tester to Drive (set power off).
2)-2 Turn-on power switch and motor on.
2)-3 Select drive and load CE diskette (close clamp door
s
1
owl
y).
2)-4 Seek TKOO to TK32 then read amplitude of each
waveform (positioning waveform) at
TPA1+ TPA2
under read mode (see Figure 7).
Trigger:
EXT - +INDEX (DC.
+)
(TPD14)
Signal:
CHI -
TPB9
(AC
)
Add
100rn\l!Div
CH2 -
TPBl.O
(AC.INV)
20 ms/Div
Specification:
whenA>B
B/A >
60%
A<B
A/B
>
60%
2)-6
Seek both
directions
TKOO-tTK32i'm~TK79""'K32.
loosen both set screws, then adjust STM until
Signal comes within spec.
Tighten screw.
3)
Note: Adjust
~nder
following conditions
Temperature:
23°C
±2°C
exposed over 2 hours
Humidity:
50% ±5%
-11
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