Track 0 Switch Adjustment; Head Azimuth Waveform; Track 0 Switch Retaining Screw - HP 9130K Service Manual

Maintenance
5-9
Figure 5-6: Head Azimuth Waveform
Track 0 Switch Adjustment (extremely difficult adjustment)
Track 0 switch adjustment should be performed whenever the radial head alignment is
changed. To properly adjust the track 0 switch, follow these steps in the order shown:
1. Connect the equipment as shown in Figure 5-3.
2. Disconnect connectors P5 and P6 from the front of the drive board.
3. Remove the drive board retaining screws and carefully lift the drive board from the
drive assembly.
4. Slightly loosen the track 0 switch retaining screw shown in Figure 5- 7.
Figure 5-7: Track 0 Switch Retaining Screw