IBM eserver p Series Service Manual page 150

Step 1522-15
Note: Read the danger and caution notices under "Safety Notices" on page xi before continuing with this
procedure.
Perform the following:
1. Disconnect the ac power cable(s) from the power distribution unit that supplies power to the I/O
drawer.
2. Use a multimeter to measure the ac voltage at the power distribution unit socket(s) where the ac
power cable(s), just removed, was (were) attached.
Is the ac voltage from 200 V ac to 240 V ac?
No Replace the power distribution unit
This ends the procedure. Go to "MAP 0410: Repair Checkout" in the Eserver pSeries
Diagnostic Information for Multiple Bus Systems.
Yes Go to "Step 1522-16" on page 131.
130 EserverpSeries 650 Service Guide