Panasonic JB-3300 Technical Manual page 389

When you are finished with this routine, enter "3" from the sub-menu to return
to the maintenance menu.
2.4 Index Timing Calibration
The purpose of this routine is to measure the index timing. To run it, enter
"4" from the maintenance menu. The following display will appear:
4. INDEX TIMING CALIBRATION
Insert alignment diskette in drive x:
Press any key when ready (or press ESC key to return to the
maintenance menu)
To run the routine, insert the alignment diskette in the drive indicated, and
press any key. The screen will display the following sub-menu.
1. HEAD position at TRACK O1 (Index signal check)
2. HEAD position at TRACK 34 (Index signal check)
3. EXIT
SELECT MENU ? __
Enter "1" or "2" to move the head to TRACK O1 or TRACK 34, respectively. The
following display will appear:
HEAD position = TRACK xx
Continuing READ operation
Check INDEX timing
Press any key to return to the sub-menu
Press any key to stop the routine and return to the sub-menu.
When you are finished with this routine, enter "3" from the sub-menu to return
to the maintenance menu.
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