Step 1522-22
Replace the items in the following list one at a time. Turn off the power before removing the item, and turn
the power back on after replacing the item to determine if the drawer will power on.
1. Replace the power supply with the amber fault LED on solid.
2. Replace the other power supply with the one just removed.
3. Replace the I/O drawer backplane.
Does the I/O drawer power on?
NO Have all the items in the list above been replaced?
NO Go to “Step 1522-22” and replace the next item.
YES Call service support.
YES The item just replaced was defective. This ends the procedure. Go to ″MAP 0410: Repair
Checkout″ in the RS/6000 Eserver pSeries Diagnostic Information for Multiple Bus Systems.
Step 1522-23
Are the amber fault LEDs of both power supplies of the I/O drawer blinking?
NO Go to “Step 1522-24”.
YES Go to “Step 1522- 25”.
Step 1522-24
Perform the action items in the following list one at a time. Turn the power off before removing the item,
and turn the power back on after replacing the item to determine if the drawer will power on.
1. Check all SPCN external cabling.
2. Replace the power supply with the amber fault LED blinking.
3. Replace the other power supply with the one just removed.
4. Replace the I/O drawer backplane.
Does the I/O drawer power on?
NO Have all the items in the list above been replaced?
NO Go to “Step 1522-24”, and replace the next item.
YES Call service support.
YES The item just replaced was defective. This ends the procedure. Go to ″MAP 0410: Repair
Checkout″ in the RS/6000 Eserver pSeries Diagnostic Information for Multiple Bus Systems.
Step 1522- 25
Disconnect the ac power cable (dc power cable for a dc-powered system) to each power supply of the I/O
drawer and remove the following components from the I/O drawer, one at a time, in the sequence listed:
1. RIO adapter card
2. PCI adapter card(s)
Reconnect the ac power cables (dc power cable for a dc-powered system) to each power supply of the I/O
drawer and attempt to power on the I/O drawer.
Does the I/O drawer power-on?
NO Go to “Step 1522-28” on page 120.
YES Go to “Step 1522-26” on page 120.
Chapter 3. Maintenance Analysis Procedures (MAPs) 119
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