4 Fault Isolation
4.9 HPMM Alphanumeric Display
364 HPM High-Performance Process Manager Service R688
Honeywell December 2020
Begin Communications processor firmware based
tests.
Global DRAM initialization
Comm Local RAM destructive pattern test
Comm Local RAM initialization
UCN TBC Private RAM destructive pattern test
UCN TBC Private RAM Initialization
Initialize the (FW resident) LLC Communications layer
Alive state (file 1, UCN node 39)
Startup/Factory Test mode sequence
If the Factory Test mode had been selected, the Startup sequence would end prior to LLC initialization as
listed in the following table for the Detailed-display mode and non-Detailed Display mode.
Table 69 Alphanumeric Display for Startup/Factory Test Mode Sequence
Begin Communications processor firmware based
tests.
Global DRAM initialization
Comm Local RAM destructive pattern test
Comm Local RAM initialization
UCN TBC Private RAM destructive pattern test
UCN TBC Private RAM Initialization
Transition to the FW Alive state
Alive state (UCN node 00, Right file position)
Factor Test mode notification
Status is displayed for 1/2 second.
Notification is displayed for 1/2 second.
Startup/HPMM failure sequence
An HPMM failure occurs during or after a Startup results in alternating failure and Communications
processor Hard failure code. This is dependent upon whether the Detailed Display mode (switch) is
enabled. The description in the following table is an example of a sequence when a spurious interrupt
failure occurs listing both the Detailed Display mode and non-Detailed Display mode.
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