IBM pSeries 630 6C4 Service Manual page 138

Step 1522-18
Is the ac power cable from the rack power distribution unit to the customer's ac power outlet
connected and seated correctly at both ends?
NO Connect the ac power cable correctly at both ends.
This ends the procedure. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems.
YES Go to "Step 1522-19".
Step 1522-19
Note: Read the danger and caution notices under "Safety Notices" on page xi before continuing with this
procedure.
Perform the following:
1. Disconnect the mainline ac power cable 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 end of the mainline ac power
cable.
Is the ac voltage from 200 V ac to 240 V ac?
NO Go to "Step 1522-20".
YES Replace the power distribution unit.
This ends the procedure. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems.
Step 1522-20
Note: Read the danger and caution notices under "Safety Notices" on page xi before continuing with this
procedure.
Perform the following:
1. Disconnect the mainline ac power cable from the customer's ac power outlet.
2. Use a multimeter to measure the ac voltage at the customer's ac power outlet.
Is the ac voltage from 200 V ac to 240 V ac?
NO Inform the customer that the ac voltage at the power outlet is not correct.
This ends the procedure. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems.
YES Replace the mainline ac power cable.
This ends the procedure. Go to "MAP 0410: Repair Checkout" in the RS/6000 Eserver pSeries
Diagnostic Information for Multiple Bus Systems.
Step 1522-21
Are the amber fault LEDs of both power supplies of the I/O drawer on solid?
NO Go to "Step 1522-22" on page 119.
YES Go to "Step 1522- 25" on page 119.
118 Eserver pSeries 630 Model 6C4 and Model 6E4 Service Guide