IBM 2274 manual Parallel/Serial Ports, Joystick, Diagnostic Program, Keyboard

Error Symptoms		Action/FRU
Display problem not listed	1.	“Monitor” on page 72.
above (including blank or	2.	Load default settings
illegible monitor).		(if screen is readable).
	3.	System board

Parallel/Serial Ports

NOTE: Execute “Load BIOS Default Settings” in Configuration/Setup Utility to confirm ports' presence before diagnosing any parallel/serial ports problems.

Serial or parallel port loop-	1.	Make sure that the LPT#
back test failed.		or COM# you test is the
		same as is set in
		Configuration/Setup
		Utility
	2.	Loop-back.
	3.	System board.
Printing failed.	1.	Ensure that the printer
		driver is properly
		installed.
	2.	Refer to the service
		manual for the printer.
	3.	Printer
	4.	Printer cable.
	5.	System board.
Printer problems.	1.	Refer to the service
		manual for the printer.
Joystick
Game port does not	1.	Connect a joystick to the
respond or does not work.		game port, then execute
		“Interactive Test/Joystick”
		test in PC-Doctor
		diagnostics program.
	2.	System board.
Diagnostic Program
Diagnostics programs	1.	Reboot the system from
cannot be executed.		the diagnostics diskette.
	2.	Load default settings.
	3.	Diagnostics diskette.
	4.	Memory module.
	5.	System board.
Missing diagnostics file(s).	1.	Diagnostics diskette.
Keyboard
Some or all keys on	1.	“Keyboard” on page 66.
keyboard do not work.

52 IBM Desktop System HMM