14. Is circuit breaker CB1 on the PCC of the failing frame set to the | (on)
position?
No Yes
↓ Exchange the following FRUs, one at a time. See the removal and
installation procedures in this book or in the Migrated Expansion Tower
Problem Analysis, Repair and Parts, depending on the secondary frame
you are working on.
v PCC
v Frame control panel
v Frame control panel cable
This ends the procedure.
15. Set circuit breaker CB1 on the PCC to the | (on) position.
16. Power on the system. Does CB1 remain in the | (on) position?
Yes No
↓ Exchange the power control compartment. See the removal and
installation procedures in this book or in the Migrated Expansion Tower
Problem Analysis, Repair and Parts, depending on the secondary frame
you are working on.
This ends the procedure.
17. Does the failing frame become powered on?
No Yes
↓
This ends the procedure.
18. Is the Attention light blinking?
Note: This may be a normal condition during a power-on sequence.
Yes No
↓ Go to step 21 of this procedure.
19. Does the Attention light continue to blink for more than 1 minute?
Yes No
↓
This ends the procedure.
20. Go to step 23 on page 46 of this procedure.
21. The Attention light is on. This may be a normal condition. Does the Attention
light remain on for more than 1 minute?
Yes No
↓
This ends the procedure.
22. Exchange the following FRUs, one at a time. See the removal and installation
procedures in this book or in the Migrated Expansion Tower Problem Analysis,
Repair and Parts, depending on the secondary frame you are working on.
v PCC
v AC module
Power Problems
Chapter 1. Starting Problem Analysis 45
To Next Page
Loading...
