Fig. 5.5 Index Timing

5.8 Track 00 Sensor Adjustment

(1) Set the oscilloscope as follows:
Set horizontal deflection to 1 ms/division.

CH1 : ZP
EXT : SP

(2) Step between specified tracks at in the FLAG 0 item of Table 4.1. (Turn the seek delay switch on the exerciser to adjust 12ms seek).
(3) Loosen the track 0 sensor screw and adjust until the waveform on the oscilloscope appears as shown in Fig. 5.6.

 

Fig. 5.6 Track 0 Waveform


5.9 Limiter Verification

(1) Seek to track 0.
(2) Write 2F data on track 0, and measure read level.
(3) Seek to track -1, and check that the head just touches the limiter.
(4) Check that, when the RECAL switch on the exerciser is pushed ON, the head returns to track 0 and that the 2F output level is the same as that measured in Step (2).

9

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