Troubleshooting 3-19
Core I/O Troubleshooting
The Core I/O for the HP 3000 and HP 9000 computer systems are provided by two different cards. The make
up of the individual core I/O cards can be seen in the block diagrams located in Appendix B. The Core I/O
card is an FRU, so any failure of a component located on the core I/O card requires the replacement of the
core I/O card. The only replaceable components of the core I/O card is the Internal Modem (both 3000 and
9000), audio card (HP VISUALIZE Kx60 workstations), and the Optional I/O (9000 only) slot.
Integrated Access Port
The Integrated Access Port (IAP) is a component of both (3000 and 9000) Core I/O cards. The IAP executes
a selftest at power on, or a user initiated selftest (TA) can be launched from the Access Port Commands list
of commands, located in Appendix B. Table 3-13. on page 3-20 is a list of Informational and error messages
associated with the IAP:
HPMC Processing Status
CBF0 HPMC occurred Follow the action for other HPMC codes beginning
with numerics.
CBF1 OS did not replace IVA
CBF2 Invalid length for OS HPMC handler
CBF3 Invalid address for OS HPMC
CBF4 Invalid OS HPMC checksum
CBF7 Entering PDC IO
CBF8 Exiting PDC IO
CBF9 PDC IO found unconfigured IOA/BC lower
bus cannot be accessed
CBFA Previous HPMC PIM logged and not yet
read, current HPMC cannot be logged
Contact response center.
CBFB PDCE HPMC processing complete, branch-
ing to OS HPMC
Follow the action for other HPMC codes beginning
with numerics.
CBFC PDCE HPMC processing complete, failed to
branch to OS HPMC, halt CPU
CBFD Could not determine why PDCE check
(0xF000 0000) was entered
Contact response center.
CBFE This HPMC interrupted a TOC, halt CPU Contact response center.
CBFF Another HPMC occurred on this CPU while
it was executing PDCE HPMC, halt CPU
Contact response center.
Table 3-12. HPMC Codes (Continued)
Code Description Action
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