Epson 486SX - Manual (Page 196)

System diagnostics error messages (continued)
Error code Message
System board (continued)
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 CPU instruction error
114 Protect mode error 1
115 Protect mode error 2
Memory
201 Memory parity error
Keyboard
301 Keyboard controller error, keyboard error
302 Keyboard is non-standard, or keyboard is
defective
Monochrome display adapter and CRT
401 Error in adapter check
402 Video signal error
403 Error in attribute check
404 Error in character set check
406 Error in graphics mode check
408 Error in screen paging check
409 Error in light pen check
410 Error in video check
411 Error in sync check
Performing System Diagnostics C-11