4–8 Troubleshooting
Disk Read Error
Disk Write Error
Instruction Indication Yes No
1. Turn printer off. Verify that the
system diskette is not
read/write protected. Insert
floppy diskette in drive. Turn
printer on.
“DISK READ ERROR”
or
“DISK WRITE ERROR”
message.
Go to step 2. Return printer to
normal operation.
2. Turn printer off. Remove front
panel. Check connections of
the floppy interface cable
assembly and floppy power
cable assembly at the disk
drive unit and the featurebus
backplane. (See Appendix
A.)
Connections are correct, clean,
and tight.
Go to step 3. Clean and
connect cables as
necessary.
3. Check continuity of the floppy
interface cable assembly and
floppy power cable assembly.
(See Appendix A.)
Continuity checks out okay for
both cables.
Replace diskette
drive.
Replace cable
assembly that fails
continuity test.
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