Epson 486SX manual 159

Power-on diagnostics error messages (continued)

	Error code								Action	I
	Memory
	171			BIOS shadow RAM error					1 Contact dealer
	173			Cache options error					Run Setup; see
									Chapter 2
	201			Memory	error
	202			Memory	address			error
203				Memory	address			error
	Keyboard
	301			Keyboard error					See “Keyboard
									Problems”
	303			Keyboard		or	system
				unit error
	304			Keyboard		or	system
				unit error
	Monitor			CRT error					See “Monitor
	401
									Problems”
	501			CRT error
	Diskette	drive(s)	and
	controller			Diskette error					See “Diskette
	601
									Problems” or ‘Diskette
									Drive Problems”
	Parallel	port (printer
	interface)
	901			Parallel	port		error		See “Printer Problems”
	Serial port (RS-232C
	port)
	1101			Serial port error					See “Printer Problems”

B-4Troubleshooting