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5.3.4 Head alignment adjustment
1)
Equipment
CE Tester
CE Diskette (DYMEK 502-10
~E
DISKETTE)
No. 1 screw driver
Oscilloscope
Hex wrench (1.5mm dia.)
(Fine point diagonal cutter)
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
slowly) .
2)-4 Seek TKOO to TK32 then read amplitude of each
waveform (positioning waveform) at TPB9, TPB10
under read mode (see Figure 7).
Trigger:
EXT - -INDEX (DC,
+)
(TPB2 )
Signal:
CHI - TPA9
(AC
)
CH2 - TPAIO . (AC,INV) Add
Specification:
when A>B
A<B
CHECK
B/A > 0.57
AlB> 0.57
ADJUST
0.6
0.6
2)-6 In case seek direction is TKOO TK32 or TK79 TK32,
loosen both set screws, then adjust STM until
signal comes within spec. Tighten screw.
3)
Note: Adjust under following conditions
Temperature:
Humidity:
11
23°C =2°C exposed over 2 hours
50% :!:5%
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