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TRACK
CJ
SE~SOR
CHAS SIS CAK"1D1G _ RS
1'RACK 0
BLOCK
FIGURE 5-13
TRACK 0 STOP
\
STOP~
1.
Remove the alignment diskette, and insert a nonwrite
protected diskette into the drive.
2.
Set up the oscilloscope
Channel A:
Test point 4
Channel B:
Test Point 5
vertical Amplitude:
50 millivolts per division
Ground:
Test Point
8
or 14
Read Differentially:
A
plus B, B inverted
Time Base:
20 milliseconds per division
External Trigger:
Test Point 12
3.
Seek to Track 39.
4.
Write a 2F, all ones, pattern on Head
O.
5.
Verify the amplitude is 200 millivolts or greater,
peak-to-peak.
6.
Write a 2F, all ones, pattern on Head 1.
7.
Verify the amplitude is 200 millivolts or greater,
peak-to-peak.
5-18
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