IBMSIG - The Source

Power On Self Test Error Codes
 
The following is a quick summary of the error messages from the IBM
Diagnostic programs.  The numbers are related to "replaceable units" and each
one has its own "century".  The last two digits have some meaning but IBM
didn't even publish the meaning of them in its Hardware Maintenance and
Service Manual!
 
 100 - System Unit
 200 - Memory
 300 - Keyboard
 400 - Monochrome Adapter
 500 - Color/Graphics Adapter
 600 - Diskette Drives and Adapter
 700 - Math Co-processor
 900 - Printer Adapter
1100 - Asynchronous Adapter
1200 - Alternate Asynch Adapter
1300 - Game Control Adapter
1400 - Matrix Printer
1500 - SDLC Comm Adapter
1700 - x Fixed Disk Drives and Adapters
1800 - Expansion Option
2000 - BSC Adapter
2100 - Alt BSC Adapter
2200 - 1 Cluster Adapter(s)
2400 - Enhanced Graphics Adapter
2800 - 3278/9 Emulation Adapter
2900 - Color/Graphics Printer
3000 - PC Network Adapter
3100 - Alt PC Network Adapter
3300 - x Compact printers
3600 - 1 GPIB Adapter(s)
3800 - 1 Data Acquisition Adapter(s)
3900 - Professional Graphics Controller
 
As you can see, there are some series of numbers that were not used as of
version 2.08 of the diagnostic program.  If anyone has a newer version,
please post a message to the ASK SYSOPS Category in IBMSIG POSTPLUS or in the
"IBMSIG EXCHANGE" topics in PARTI.

Mike Todd
SysOp, IBMSIG
Source ID:  SIG003