Epson 486SX - Manual (Page 159)

Power-on diagnostics error messages (continued)
Error code
Memory
171
173
BIOS shadow RAM error Contact dealer
Cache options error
201 Memory error
202 Memory address error
203 Memory address error
Keyboard
301 Keyboard error
303 Keyboard or system
unit error
304 Keyboard or system
unit error
Monitor
401 CRT error
501 CRT error
Diskette drive(s) and
controller
601 Diskette error
Parallel port (printer
interface)
901
Serial port (RS-232C
port)
1101
Action
Parallel port error
Serial port error
Run Setup; see
Chapter 2
See “Keyboard
Problems”
See “Monitor
Problems”
See “Diskette
Problems” or ‘Diskette
Drive Problems”
See “Printer Problems”
See “Printer Problems”
B-4 Troubleshooting