IBM 7012 G Series, Service Manual

Page: 109 / 264

3-1540-11
Maintenance Analysis Procedures (MAPs)
Step 9
(from Step 8)
1. Power off the system unit.
2. Unplug the system unit power cord from the wall outlet.
3. Starting with the last installed adapter, disconnect one attached device and cable.
4. Insert the diagnostic CD-ROM disc into the CD-ROM drive.
5. Connect the system unit power cable to the wall outlet.
6. Power on the system unit.
7. If the Maintenance Menu is displayed, select
System Boot
, then
Boot From List
.
8. If the system stops with a
260
displayed, and the Main Menu is displayed, Select
Exit
Main Menu and Start System (Boot)
and press Enter. When the “Starting
System Boot” menu displays, press Enter. Repeat this procedure each time these
conditions occur.
9. Wait for one of the following conditions to occur:
•
The system stops with
c31
displayed in the operator panel display.
•
The same three digit number is displayed in the operator panel display for longer than
three minutes except for
165
which may display for up to ten minutes with no activity
on the BUMP console.
•
The number
888
is flashing in the operator panel display.
Is
c31
displayed in the operator panel display
?
NO Repeat Step 9 until the defective device or cable is identified or all the
devices and cables have been disconnected.
If all the devices and cables have been removed then, one of the FRUs
remaining in the CPU Enclosure is defective.
To test each part, exchange the parts in the following order:
1. Adapter (last one installed)
2. System planar
3. Power supply
If the symptom did not change and all the FRUs have been exchanged, call
your service support person for assistance.
If the symptom has changed, check for loose cards, cables, and obvious
problems. If you do not find a problem, return to Step 1 in this MAP, and
follow the instructions for the new symptom.
YES The last device or cable you disconnected is defective.
Exchange the defective device or cable.
Go to “Map 0410: Repair Checkout” in the Diagnostic Information For Micro
Channel Bus Systems.