3-8 Chapter 3
Troubleshooting
Troubleshooting System Hardware Faults
The Chassis Major Code Category (refer to Table 3-4) is basically the same for all D
Class and R Class Models and CPU types. The Chassis Major Code Category is the first
digit in the four digit chassis code. Within the specific models a particular Chassis Code
may have slightly different meanings for the same code number. The faults listed in
Table 3-5 occur before the operating system is launched. This is during the power-up
selftests and system initialization processes.
Table 3-4 Major Code Category Definitions
For a detailed description of the Chassis display codes for specific D Class models, refer
to the appropriate Chapter shown below.
Chapter D Class Model
Chapter 4: D200, D210, and D310
Chapter 5: D250, D350, D260, and D360
Chapter 6: D270, D370, D280, D380, R380, D390, and R390
Chapter 7: D220, D320, D230, and D330
Code Description
0 Reserved
1 Interrupts, Selftests and Diagnostics (CPU/TLB/MIOC
2 Cache (selftest and diagnostic)
3 Processor Dependent Hardware (PDH)
4 Selftests and Diagnostics
5Bus Transactions
6 Reserved
7 Memory Subsystem Faults and PDCE-HPMC Memory Faults
8 I/O Device Faults
9 Console Initialization Faults
A Boot Device Initialization Faults
B Operating System Panics (reported by OS)
C System Initialization Codes (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, and Bus)
D Shutdown Codes (reported by OS)
E Warning Codes (reported by OS)
F Run Codes (reported by OS)
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