IBM pSeries 670, Service Manual

Page: 168 / 1032

MAP 1521: The System Will Not Power On And No Error Codes Are
Available
Step 1521-1
Ensure that the following are true:
v
Both power cords are properly connected
v
The UEPO panel switch is in the ON position
v The UEPO BYPASS switches on both BPCs are in the Normal position
v
The on/off switches located on all the BPRs are in the on (left) position
Note: A switch set to the off position cannot cause this problem, however, any switch found in the off
position must be reset to the on position (wait 10 seconds) before proceeding.
v The cable from UEPO connector J00 to BPC-A connector J05 and the cable from UEPO connector J01
to BPC-B connector J05 are properly connected without visible sign of damage.
v
The room temperature is not in excess of the maximum allowed (40 degrees Celsius or 104 degrees
Fahrenheit)
Note: If the room temperature exceeds the specified maximum, the machine may continually cycle on
and off.
Are all the above conditions true?
NO Correct any problems and go to
″
MAP 0410: Repair Checkout
″
in the RS/6000 and
Eserver
pSeries Diagnostic Information for Multiple Bus Systems .
YES Go to “Step 1521-2”.
Step 1521-2
Check the LEDs on both sides of the bulk power assembly (BPA).
Are all LEDs off on both sides of BPA?
NO Go to “Step 1521-3”.
YES Go to “Step 1521-9” on page 150
Step 1521-3
Check the following LED states on both Bulk Power Controllers (BPCs):
v UEPO PWR LED turned on
v
BPC GOOD LED turned on
v All other LEDs are off
Are all of the above true?
NO Go to “Step 1521-4” on page 149.
YES Go to “Step 1521-5” on page 149.
148
Eserver
pSeries 670 Service Guide