Display Codes 4-1
4
Front Panel Display Codes
This chapter is a collection of PDC Chassis codes and error codes that can be displayed on the system
console and the front panel LCD display located on the SPU cabinet.
PDC Chassis Codes
This section lists the PDC chassis display codes. The display codes are listed in numerical order and by SPU
function. The first column contains the ostat or operating state of the computer. The ostat values are: OFF,
FLT (fault), TEST, INIT (initialize), SHUT (shutdown), WARN (warning), RUN, and ALL.
The Code consists of four hex digits (D0, D1, D2, and D3). D0 is considered the Major Code Category. The
Categories are 0 through F and are defined as follows:
Table 4-1. Major Code Category definitions
0Reserved
1 Interrupts, Selftests, Diagnostics, and Boot codes
2 Cache (selftests and diagnostics)
3 Processor Dependent Hardware (PDH)
4 Late Selftests
5 Bus Transactions
6 Reserved
7 Memory Subsystem Faults and PDCE_HPMC Memory Faults
8 I/O Device Faults
9 Console Initialization Errors
A Boot Device Initialization Errors
B Operating System Panic (OS)
C System Initialization (Processor, Memory, Monarch Extended Selftest, console,
Boot device and IPL for primary path, Boot device and IPL for all other paths,
TOC, LPMC, HPMC, Slave CPU, Bus) Codes
D Shutdown Codes (OS)
E Warning Codes (OS)
F Run Codes (OS)
NOTE
For all fault codes listed within the majority codes, refer to Chapter 3 Troubleshooting, for the
appropriate procedure or action to perform.
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