Personal Computer User Manual

Error Codes and Messages
The following table lists all the error codes and messages that
may appear during system diagnostics testing.
System diagnostics error codes and messages
Error code
Message
System board
101
CPU ERROR
102
ROM CHECKSUM ERROR
103 TIMER COUNTER REGISTER ERROR
104
TIMER COUNTER ERROR
105 DMA CONTROLLER REGISTER ERROR
105
REFRESH ERROR
106 DMA PAGE REGISTER ERROR
107 KEYBOARD CONTROLLER TIMEOUT ERROR
108 KEYBOARD CONTROLLER SELF DIAGNOSTIC
ERROR
108
KEYBOARD CONTROLLER WRITE COMMAND
ERROR
109
INTERRUPT CONTROLLER ERROR
110
CMOS SHUTDOWN BYTE ERROR
111
CMOS BATTERY ERROR
112
CMOS CHECKSUM ERROR
113 INSTRUCTION ERROR
114
PROTECT MODE ERROR 1
115
PROTECT MODE ERROR 2
Memory
201 MEMORY/PARITY ERROR
Keyboard
301 KEYBOARD ERROR
302 KEYBOARD IS NON-STANDARD, OR KEYBOARD
IS DEFECTIVE
Monochrome display adapter and CRT
401
V-RAM ERROR
402 VIDEO SIGNAL ERROR
403
ATTRIBUTE ERROR
404 CHARACTER SET ERROR
Performing System Diagnostics
C-37