No Repeat step 17 on page 107.
Yes This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems
19. Is the SRC 1xxx1206?
No Go to “Entry MAP” on page 79.
Yes Go to step 20.
20. Perform the following:
a. Power off the system.
b. Remove cards M01-M03, M08-M10, M11-M15, and M20-M24.
c. Power on the system.
Does the system power on?
No Go to step 23.
Yes Go to step 21.
21. Perform the following:
a. Power off the system.
b. Install one of the Mxx load cards that was removed in step 20.
c. Power on the system.
Does the system power on?
No The last card that was installed in step 21 is failing, replace the failing
card.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
Yes Go to step 22.
22. Have all the Mxx load cards been installed?
No Repeat step 21.
Yes This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostic Information for Multiple Bus Systems.
23. Perform the following:
a. Power off the system.
b. See the table at the end of this procedure to identify the possible failing
regulators.
c. Remove one of the possible failing regulators and install a new regulator card.
d. Power on the system.
Does the system power on?
No Go to step 24 on page 109.
Yes The regulator assembly you removed in this step is failing, replace the
regulator assembly.
108 Service Guide
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