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2-1540-2 Installation and Service Guide
Step 1
(from Steps 3, 7, 8, 9, and 14)
1. Ensure that the diagnostics and the operating system are shut down.
2. Turn the key mode switch to the Service position.
3. Set the power switch on the system unit to Off.
4. Insert the first diagnostic diskette into the diskette drive.
5. Set the power switch on the system unit to On.
6. Find the symptom in the following table that best matches the symptom on your system,
and then perform the associated task.
Information in
three-digit dis-
play
Other conditions Do this:
Nothing Diagnostic Operating Screen is displayed Go to Step 14.
c07 The diskette drive “In-Use” light is on Insert the next diagnostic
diskette.
Wait for one of the other
symptoms in this table to
occur.
888 flashing Go to Step 2.
Two or more num-
bers between 221
and 296 are dis-
played alternately.
First diagnostic diskette is loaded Go to Step 7.
c31 Instructions to select the system console
displayed on the screen.
Follow the instructions on
the screen. Wait for one of
the other symptoms in this
table to occur.
c05 The diskette drive “In-Use” light is on The diagnostic diskette is
probably bad. Insert the
same diskette from a du-
plicate diagnostic set. If
the duplicate diskette
causes the same symp-
tom, Go to Step 7.
299 or less Digits on solid for more than 3 minutes,
and the power light is on.
Go to Step 2.
300 or greater Digits on solid for more than 3 minutes,
and the power light is on.
Go to Step 7.
570 Digits on solid for more than 3 minutes,
and the power light is on.
Down level SCSI-2 code.
Run diagnostics with re-
movable media.
Any symptom not listed above. Go to Step 2.