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172 Appendix A
LED codes
CUB detected processor error
CUB detected processor error
This section describes processor errors detected by the monitoring
utilities chip (MUC) on the core utilities board after power-on.
Table 17 CUB detects processor power fail
LED Fault Symptoms Corrective action
48 PB0L Power Fail 1. 3.3V dropped below
acceptable level.
2. Core utilities board (CUB)
detected a power loss on the
reported processor board
(PB).
3. Core utilities board (CUB)
powers down the system.
Call the Response Center.
49 PB1R Power Fail
4A PB2R Power Fail
4B PB3R Power Fail
4C PB4L Power Fail
4D PB5R Power Fail
4E PB6L Power Fail
4F PB7R Power Fail
50 PB0R Power Fail
51 PB1L Power Fail
52 PB2R Power Fail
53 PB3L Power Fail
54 PB4R Power Fail
55 PB5L Power Fail
56 PB6R Power Fail
57 PB7L Power Fail