IBM R30 Operator's Manual page 199

6. Starting at the top of the following table, find your symptom and follow the instructions
given in the Action column.
Symptom
The system stops with a blank operator
panel display and the words DIAGNOSTIC
OPERATING INSTRUCTIONS are
displayed with no obvious problem on the
console display (for example, it is not
distorted or blurred).
The system stops with a blank operator
display and the MAINTENANCE MENU is
displayed.
The power-on light does not come on or
comes on and does not stay on.
The system stops with a steady (not
flashing) number displayed in the operator
panel display, and the power-on light is on.
The system stops with 888 flashing in the
operator panel display.
The system stops with a blank operator
panel display, and the words DIAGNOSTIC
OPERATING INSTRUCTIONS are not
displayed correctly.
The operator panel display is blank and
the normal system log-in screen is
displayed.
The system stops with two or more
numbers between 221 and 296
alternating in the operator panel display.
Action
Go to Step 10.
Select System Boot, then Boot From List,
and continue with this step.
Check the power cable to the outlet.
Check the circuit breakers and check for
power at the outlet.
If you do not find a problem, record SRN
111–152 and report the problem to the
service organization.
STOP. You have completed these
procedures.
The number must be other than c31. See
substep 3 above for this number.
Go to Step 7.
Go to Step 8.
Go to Step 9.
Be sure the mode switch is set to the
Service position.
If the mode switch was not in the Service
position, stop the operating system, set it
to the Service position, and press Reset.
Then repeat this step.
If the mode switch was in the Service
position, record and report SRN 111–102.
STOP. You have completed these
procedures.
Go to Step 16.
Hardware Problem Determination
11-5