Will Not Read; Front Panel Led Inoperative - Tandon TM-100-1 Operating And Service Manual

SECTION
4.4
4.5
4.6
CONDITION
Will not read.
Front panel LED
inoperative.
No Track 00 switch
indication.
POSSIBLE CAUSE
Interface incorrect.
Alignment off.
Defective read
electronics.
Defective heads.
Interface not enabled.
LED not connected.
LED defective.
LED driver defective.
Defective seek.
Track 00 switch not
connected .
Defective logic.
Defective Track 00
switch .
4-3
RECOMMENDED ACTION
Verify select is true and write
enable is false.
Verify C. E. lobes, index burst,
and Track 00 switch adjustment.
Replace Logic PCBA.
Replace Module Assembly.
Verify interface select and
jumper configuration.
Check P9.
Replace Front Panel
LED Assembly.
Replace Logic PCBA.
See Section 4.2.
Check P11.
Replace Logic PCBA.
Replace Track 00 Switch
Assembly.