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SECTION
4.1
CONDITION
NOT READY
AND/OR
NO INDEX
POSSIBLE CAUSE
Diskette not inserted.
Diskette not clamped.
Unit not selected.
Drive motor not turning
Index sensor not
connected.
Index sensor defective.
RECOMMENDED ACTION
Insert diskette.
Turn knob lock lever
clockwise so that it
is perpendicular to
the diskette insertion slot.
Verify unit select and
jumper configuration.
Verify interface drive motor on.
Check Connector P6.
Verify drive belt installed
Replace circuit board.
Replace Drive Motor Assembly.
Check P1.
Replace index sensor.
4.2
WILL NOT SEEK
OR RESTORE
Interface not enabled.
Verify interface direction,
step, and select signals.
Step motor disconnected.
Check Connectors P4 and P5.
Defective step logic.
Defective stepper motor.
Wrong option selected.
4-2
Replace circuit board.
Replace Stepper Motor Assembly.
Check options OS and HL for the
particular application.
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