Codes 100 - 159
Symptom / Error FRU / Action
0001 01XX
Interrupt failure. Possibly a bad battery or processor
1. Run Advanced Diagnostics
2. 486DX33 Upgrade (70/80)
0001 02XX
ROM checksum or timer error. Possibly a bad battery or processor
1. Run Advanced Diagnostics
2. 486DX33 Upgrade (70/80)
(If the battery was removed while replacing the 80386 processor in a model 70, with a 486DX33 Processor Upgrade (FRU Number 92F0436), remove the 486DX33 processor and install the 80386 processor, then install the battery. Configure the system and re-install the 486DX33 processor without removing the battery.)
0001 0300
Checksum or timer error.
If it is a 20 MHz board, and the processor is not a 487SX, the jumper must be in positions 2 and 3
(487SX is indicated on the processor)
1. Processor Board (90/95)
2. System Board
0001 02XX
0001 03XX
0001 04XX
0001 07XX
1. System Board
2. Processor Board
0001 05XX
Command not accepted
Information only
0001 06XX
Converting logic test failure
1. Run Advanced Diagnostics
0001 07XX / 0001 08XX
0001 09XX
Interrupt or memory failure
1. System Board Memory
2. System Board
3. Processor Board (90/95)
4. Any Adapter
5. Bus Adapter
0001 0XXX
any other not listed
1. System Board
0001 10XX
Check Memory
(For Model 56 / 57 & 90 / 95, also
see 000201XY for socket location list)
1. Memory Module Kit
2. System Board
0001 11XX
I/O channel check
1. Adapter Memory
2. Expansion Adapter
3. System Board
0001 12XX / 0001 13XX
Possible MC-timeout error
Often caused by a card with defective MCA bus interface or too slow responding card.
1. System Board
2. Processor Board (90/95)
3. Any Adapter
0001 14XX
ROM error
1. Any Adapter
2. Bus Adapter
0001 15XX
80386 protected mode failure, or BIOS
checksum error
1. System Board
2. 486DX33 Upgrade (70/80)
0001 16XX
Possible read/write problem
1. Run Advanced Diagnostics
2. 486DX33 Upgrade (70/80)
0001 18XX
Previously detected error.
Run Advanced Diagnostics
1. System Board Memory
2. Processor Board (90/95)
0001 19XX
2.88MB diskette drive is installed but not supported.
1. Run Automatic Configuration
2. System Board
0001 1XXX
not listed above
1. System Board
0001 20XX
Possible Processor self test failure (90/95)
1. System Board Processor Cache
2. Processor Board (90/95)
0001 21XX
A problem was detected during 
memory remapping (256KB ROM Error)
Information only
0001 22XX
POST found a hardware error
1. Run Advanced Diagnostics
0001 2201 / 0001 2202
0001 2203 / 0001 2204
0001 2205 / 0001 2206
0001 2207 / 0001 2208
Data error, Possible system board failure
1. Run Advanced Diagnostics
0001 29XX 1. Run Advanced Diagnostics
2. Cache Kit
3. System Board
0001 30XX
POST could not start the operating system. 
Operating system loaded ?
Is the boot drive in the selectable drive sequence ?
1. Check Drive Sequence
0001 3001
Security system is being used, but the computer is not totally secured because there is a diskette drive in the startup sequence
1. Delete diskette drive from the startup sequence if so desired.
0001 3002
Drive startup sequence is corrupt or invalid
1. Run Automatic Configuration
then reset the selectable drive startup sequence. If the problem still exists, replace the system board
0001 3003
EEPROM could not be read
1. Run Automatic Configuration
If the problem still exits, replace the system board.
0001 31XX 1. System Board
0001 32XX
DMA extended registers error
1. Run Advanced Diagnostics
0001 33XX
DMA verify function error. Logic failed
1. Run Advanced Diagnostics
0001 34XX
DMA arbitration logic error
1. Run Advanced Diagnostics
0001 4905 1. System Board
2. Processor Board
0001 4908 / 0001 4909
Before replacing any FRUs, see
'Cover Lock and Tamper-Evident Switches'
1. System Board
2. Tamper Evident Switches
3. Keylock Assembly
0001 52XX
Real time clock error.
This is not always a hardware failure. See also
'Real-Time Clock Problems'
1. Run Advanced Diagnostics
0001 56XX
Security error.
The covers were removed without using the key. The tamper evident switch was tripped.
1. Start the system from the Reference diskette (or server image) and reconfigure the system.
2. Security Switch Assembly
3. System Board

Feel free to contact me to report errors, experiences,
missing adapters and their ADFs.
I'm collecting any ADF or entire option disks I can get.
© 1998 by Peter H. Wendt / pw-software production
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