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.