| Symptom / Error | FRU / Action | 
| 0121 XXXX 
 | 1. 300/1200/2400 Modem /A 2. Any serial device
 3. System Board
 | 
|  | 
| 0129 0001 / 0129 0002 0129 0003 / 0129 0004
 0129 0007 / 0129 0008
 (Possibly a recoverable processor board error)
 | 1. Run Advanced Diagnostics | 
| 0129 0050 / 0129 0051 0129 0052 / 0129 0053
 0129 0054 / 0129 0055
 0129 0056
 (Possibly a fatal error)
 | 1. Processor Board 2. System Board
 | 
| 0129 0100 / 0129 02XX 0129 0400 / 0129 0700
 0129 0807
 (Cache error)
 | 1. Processor Board 2. System Board Cache
 3. System Board
 | 
| 0129 03XX (Math Coprocessor error)
 | 1. Math Coprocessor 2. System Board
 | 
| 0129 0XXX (Not listed above)
 | 1. Processor Cache (90/95) 2. Processor Board
 3. System Board
 | 
| 0129 1200 / 0129 1300 0129 1400 / 0129 15XX
 0129 16XX / 0129 1800
 0129 1900 / 0129 4040
 0129 4041
 (Possibly processor board error)
 | 1. Run Advanced Diagnostic | 
| 0129 1700 (SX-Jumper error / processor board error)
 | 1. Processor Board (90/95) If it is a 20MHz board and the processor is a 487SX the jumper must be in position 1-2.
 487SX is indicated on the processor.
 | 
| 0129 3000 (EEprom-Jumper error)
 | 1. Processor Board (90/95) 90/95 processor board EEprom jumper is in the wrong position.
 | 
| 0129 4042 (POST/BIOS EEprom error. Update diskette is required)
 | 1. Processor Board (90/95) | 
| 0129 4400 (A hardware default interrupt occured)
 | 1. Restart the system, then run Advanced Diagnostics | 
| 0129 5050 / 0129 5056 0129 5060 / 0129 5061
 0129 5070 / 0129 5071
 0129 5072 / 0129 5073
 0129 5074 / 0129 5075
 0129 5076 / 0129 5077
 0129 5078 / 0129 5079
 0129 5080 / 0129 5081
 0129 5082 / 0129 5083
 0129 5085 / 0129 5086
 0129 5087 / 0129 5088
 0129 5090 / 0129 5091
 0129 5094 / 0129 5095
 0129 5096 / 0129 5097
 (Processor board errors)
 | 1. Restart the system, then run Advanced Diagnostics | 
| 0129 X300 (Busmaster arbitration error. If more than one is installed, remove one at a time to isolate the failure)
 | 1. Busmaster Adapter (90/95) 2. Processor Board
 | 
| 0129 9900 (VPD error, processor board replaced ? Processor board serial number does not match the serial number stored)
 | 1. Run Automatic Configuration | 
|  | 
| 0136 XXXX | 1. ISDN Primary Rate Adapter 2. System Board
 | 
|  | 
| 0137 XXXX | 1. System Board | 
|  | 
| 0141 XXXX | 1. Realtime Interface Coprocessor Portmaster Adapter
 | 
|  | 
| 0143 XXXX | 1. Japanese Display Adapter 2. System Board
 | 
|  | 
| 0147 10XX / 0147 11XX | 1. System Board Display Adapter (Any type)
 2. Adapter Video Memory
 | 
|  | 
| 0148 XXXX | 1. Display Adapter (Any type)
 | 
|  | 
| 0149 01XX / 0149 02XX 0149 1XXX / 0149 22XX
 | 1. Display Adapter (Any type) 2. System Board
 3. Display (Any type)
 | 
| 0149 32XX | 1. External Display (Any type) 2. Display Adapter (Any type)
 |