Compaq 1220 manual Problem, Items To Check, Location

Before calling your Authorized Product Support, please

check that the items below are properly connected or set. 5 TROUBLESHOOTING In case of using a non-standard signal, please check the pin assignments and the signal timing of your computer

with the specification outlined in Section 6. SPECIFICA- TIONS and Section 7. APPENDIX.

PROBLEM

LED On (Green)

LED Off

No

picture

LED On (Amber)

The following message appeared.

The following message appeared.

picture	Display is miss-
	ing, center shifts,
Abnormal	or too small or too
	large of a display
	size

No operation of the USB devices

	ITEMS TO CHECK		LOCATION
• Contrast and brightness controls.		•	Front
•	Power switch.	•	Front
• AC power cord disconnected.		•	Rear
•	Signalcabledisconnected.	•	Rear
•	Computer power switch.	• Computer
• Power management function is active.		• Press any key on the keyboard
			or move the mouse.
•	Signalcabledisconnected.	•	Rear
•	Computer power switch.	• Computer
• Power management function is active.		• Press any key on the keyboard
			or move the mouse.
• Input signal frequency range is too high or too low for the		• Check the specification of
	monitor to synchronize with.		graphics adapter

•	Do "FACTORY PRESET" or "ALL RESET" for a standard	•	Front (OSD)
	signal.
•	Adjust HORIZ-SIZE, VERT-SIZE, HORIZ-POSITION, and	•	Front (OSD)
	VERT-POSITION with non-standard signals.

•Monitor may not be able to get full-screen image depend on signal. In this case, please select other resolution, or other vertical refresh timing.

•Make sure you wait a few seconds after adjusting the size of the image before changing or disconnecting the signal.

• [Universal serial bus controller] is not listed in [Device	• Confirm that Windows®98 or
Manager].	later version is installed into
	the computer.
• [Generic USB HUB] is not listed in [Device Manager].	• Make sure of the cable con-
	nections.
	• Restart the computer.
	• Turn off the monitor and turn
	on then.
	• Disconnect all the cables con-
	nected to the Upstream ports
	and re-connect then.