Will Not Write; Will Not Read - Tandon TM848-1 Operating And Service Manual

SECTION CONDITION POSSIBLE CAUSE
RECOMMENDED ACTION
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4.3 WILL NOT WRITE Interface not enabled. Verify write enable, select, and
write data interface lines.
Heads or write protect
switch not connected. Check Connectors P3, P8,
and P9.
Write protect switch
misadjusted.
Check write protect
switch operation.
Defective write logic. Replace circuit board.
Defective heads. Replace Head
Carriage Assembly.
Misadjusted platen Adjust platen load arm.
load arm.
4.4
WILL NOT READ Interface incorrect. Verify select is true and
write enable is false.
Alignment off.
Verify C. E. lobes, index
burst, and Track 00 sensor
adjustment.
Defective read Replace circuit
electronics. board.
Defective heads.
Replace Head Carriage Assembly.
Platen load arm
misadjusted. Adjust platen load arm.
4.5 ACTIVITY
L.E.D.
INOPERATIVE
Interface not enabled.
4-3
Verify interface
select and jumper
configuration.