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7.
Seek the carriage to Track 1.
8.
Select Head O.
9.
Read the trigger point to the start of the first data pulse
width (Figure 5-8).
10.
For double-sided drives, if Head 0, the lower head, meets the
tolerance, check the upper head.
NOTE
HEAD 1 SHOULD MEET THE SAME TOLERANCE.
11.
If either head does not meet the tolerance, adjust the
index sensor.
12.
Recheck both indexes after they are adJusted.
13.
when both index measurements on a double-sided drive or the
one index measurement on a single-sided drive meet the
tolerance, check the index on Track 34.
14.
For double-sided drives, check Heads 0 and 1.
NOTE
Ir'
ANY INDEX MEASUREMENT DOES NOT MEET THE TOLERANCE,
THE INDEX SENSOR MUST BE ADJUSTED.
INDEX ASSEMBLY
BELOW SERVO
CIRCUIT BOARD
FIGURE 5-9
INDEX SENSOR'S RETAINING SCREW AND ADJUSTMENT
5-12
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