Tandon TM100-1 Operating And Service Manual page 62

Condition
No Track 0
indication.
Fails drive
select check.
Fails Write
Protect switch
check and
adjustment.
Fails drive
motor speed
check and
adjustment.
Fails Cats Eye
alignment check
and adjustment.
TABLE 6-1 (CONTINUED)
TROUBLESHOOTING GUIDE
Possible Cause
Defective seek.
Track 0 switch not connected.
Track 0 switch not adjusted.
Defective logic.
Defective Track 0 switch.
Power not applied to drive.
Drive not selected.
Faulty Activity L.E.D.
Faulty Logic circuit board.
Defective Write Protect switch.
Broken Write Protect lever.
Write Protect switch out of
adjustment.
Cannot read.
Cannot step.
Track 0 sensor misadjusted.
Alignment diskette defective.
Recommended Action
See Will Not Seek or Restore.
Check Pll.
Adjust Track 0 switch.
Replace Logic circuit board.
Replace Track 0 Switch Assembly.
Verify power supply voltages.
Verify proper jumper
configuration. See Section 3 .
Replace Activity L.E.D.
Replace Logic circuit board.
Replace Write Protect switch.
Replace left rail.
Adjust Write Protect switch.
See Spindle Speed Out of
Tolerance or Not Turning.
See Will Not Read.
See Will Not Seek or Restore.
Perform Track 0 switch
adjustment procedure.
Verify alignment diskette, and
replace if necessary.
6-4