4 Fault Isolation
4.3 Fault Isolation Concepts
318 HPM High-Performance Process Manager Service R688
Honeywell December 2020
Table 58 Communications and Control Processor Hard Failure Codes
Corrective Action
(See Table 57)
IOL RAM byte/word/long decode
failure
IOL RAM pattern test failure
IOL RAM initialization test failure
Flash ROM read/write test failure
BERR - EDAC multiple bit error
BERR - Global Bus parity error
BERR - Option Card Bus Error
BERR - Global Bus timeout
BERR - ASIC register data error
BERR - ASIC register illegal address
error
BERR - UTBC Private RAM parity
error
Bad or unexpected exception
Unexpected DMA Channel interrupt
Unexpected Control-to-Comm interrupt
Unexpected FRC compare interrupt
Unexpected Comm periodic interrupt
Unexpected Control periodic interrupt
Unexpected Comm-to-Control interrupt
Unexpected tracking overflow interrupt
Unexpected RTBC interrupt
Unexpected UTBC interrupt
Unexpected Comm UART interrupt
Unexpected Control UART interrupt