Step 1523-16
Reconnect the ac power cable(s) to the power distribution unit.
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 from each power supply of secondary I/O drawer.
2. Use a multimeter to measure the ac voltage at the drawer end of each ac power cable.
Is
the ac voltage from 200 V ac to 240 V ac?
NO Replace the ac power cable(s).
This ends the procedure. Go to ″MAP 0410: Repair Checkout″ in the RS/6000 and Eserver
pSeries Diagnostic Information for Multiple Bus Systems.
YES Go to “Step 1523-17.”
Step 1523-17
Check internal drawer cabling from power distribution card to secondary I/O backplane. See “Secondary
I/O Drawer Cables” on page 483.
Replace the following in the secondary I/O drawer, one at a time, disconnecting the ac power cable (dc
power cable for a dc-powered system) to each power supply before replacement and reconnecting the ac
power cable (dc power cable for a dc-powered system) to each supply after replacement:
v Secondary I/O drawer operator panel
v Fan control card
v Power distribution card
v I/O drawer power supply (including redundant power supply, if present)
v Secondary I/O drawer backplane
Does
the secondary I/O drawer operator panel turn on the power present LED?
NO Contact your next level of support for assistance.
YES This ends the procedure. Go to ″MAP 0410: Repair Checkout″ in the RS/6000 and Eserver
pSeries Diagnostic Information for Multiple Bus Systems.
Chapter 3. Maintenance Analysis Procedures 103
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