a. Power off the system.
b. Remove the only bulk power supply installed.
c. Install one of the other bulk power supplies that was removed in step 5 on
page 102.
d. Power on the system.
Is SRC 1xxx1200 displayed?
No The bulk power supply that was just removed in this step is failing, replace
the bulk power supply.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 7.
7. Perform the following:
a. Power off the system.
b. Disconnect the ac power cables from the system rack.
c. Remove regulator assembly R04.
d. Reconnect the ac power cable to the system rack.
e. Power on the system.
Is SRC 1xxx1200 displayed?
No Regulator assembly R04 is failing, replace regulator assembly R04.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 8.
8. Perform the following:
a. Power off the system.
b. Remove the ac power cable from the system rack.
c. Remove regulator assembly R05.
d. Reconnect the ac power cable to the system rack.
e. Power on the system.
Is SRC 1xxx1200 displayed?
No Regulator assembly R05 is failing, replace regulator assembly R05.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 9.
9. Perform the following:
a. Power off the system.
b. Remove the ac power cable from the system rack.
c. Remove regulator assembly R06.
d. Reconnect the ac power cable to the system rack.
Chapter 3. Maintenance Analysis Procedures 103
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