IBM P 615 series, Service Manual

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6. Unplug the disk drives from the DASD backplane.
7. Unplug the signal and power cables from any devices in the media bays.
8. Remove all the fans.
9. Plug the power cables into the system unit.
10. Turn on the power.
Does the power LED on the operator panel come on and stay on?
NO Go to “Step 1521-9.”
YES Go to “Step 1521-10.”
Step 1521-9
Note: Either the CEC backplane or the power supplies may be defective.
To test each FRU, exchange the FRUs that have not already been exchanged in the following order:
1. Primary power supply
2. Redundant power supply (if installed)
3. VRM at U0.1-P1-V1
4. VRM at U0.1-P1-V2
5. VRM at U0.1-P1-V3
6. Memory DIMMs
7. System backplane.
Perform the following procedures as you exchange each of the above FRUs in the order listed:
1. Turn off the power.
2. Unplug the power cable from the system unit.
3. Exchange one of the FRUs in the list.
4. Connect the power cable to the system unit.
5. Turn on the power.
Does the power LED on the operator panel come on and stay on?
NO Reinstall the original FRU.
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 your service support
person for assistance.
YES Go to
″
MAP 0410: Repair Checkout
″
in the RS/6000
Eserver
pSeries Diagnostic Information for
Multiple Bus Systems .
Step 1521-10
One of the parts that was removed or unplugged is causing the problem. Install or connect the parts in the
following order:
1. Memory DIMMs
2. DASD backplanes
3. Disk drives
4. Media bay devices
5. PCI adapters, lowest slot to highest slot
6. Fans
Chapter 3. Maintenance Analysis Procedures (MAPs)
103