Step 1540-17 - IBM RS/6000 44P 270 Service Manual

Step 1540-17

The last FRU installed or one of its attached devices is probably defective.
1. Make sure the diagnostic CD-ROM disc is inserted into the CD-ROM drive.
2. Turn off the power and remove the power cable.
3. Starting with the last installed adapter, disconnect one attached device and cable.
4. Plug in the power cable (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
Repeat this step 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 system unit is defective.
To test each FRU, exchange the FRUs in the following order:
1. Adapter (last one installed)
2. I/O board (see note 4 on page 27)
3. Power supply
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 51 in
this MAP and follow the instructions for the new symptom.
The last device or cable that you disconnected is defective.
Exchange the defective device or cable.
Go to "Map 0410: Repair Checkout" in the RS/6000 and Eserver pSeries
Diagnostics Information for Multiple Bus Systems.
Chapter 3. Maintenance Analysis Procedures
65