Epson 386SX - Manual (Page 229)

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