IBM 6C1 Service Manual page 91

Step 1540-12
The system is working correctly with this configuration. The backplane may be
defective.
1. Make sure the diagnostic CD-ROM is inserted into the CD-ROM drive.
2. Turn off the power and remove the power cords.
3. Connect the signal and power connectors to the backplane.
4. Plug in the power cords and wait for OK on the operator panel display.
5. Turn on the power.
6. If the Console Selection screen is displayed, choose the system console.
7. After the keyboard indicator is displayed, press the F5 key on the directly attached
keyboard or the number 5 key on an ASCII terminal keyboard.
8. Enter the appropriate password if you are prompted to do so.
Is the "Please define the System Console" screen displayed?
NO
YES
One of the FRUs remaining in the system unit is defective.
In the following order, exchange the FRUs that have not been exchanged:
1. SCSI cable
2. Disk drive cage backplane
Repeat this step until the defective FRU is identified or all the FRUs have been
exchanged.
If the symptom did not change and all the FRUs have been exchanged, call
service support 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 1540-1" on page 64 in
this MAP and follow the instructions for the new symptom.
Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems .
Go to "Step 1540-13" on page 74.
Chapter 3. Maintenance Analysis Procedures (MAPs)
73