3M MP8760 manual Troubleshooting Problems and Solutions

ENGLISH

Section 7: Troubleshooting

7-1. Troubleshooting Problems and Solutions

Problem		Probable Cause	Possible Solution
Projector will not turn	•	Power cable is	• Plug the power cable into an AC outlet.
on.		disconnected or not	• Turn the main power switch to the ON postion.
		plugged in.	• Send the unit to be repaired.
	• Main power switch is
		not on.
	• The ?inner fuses? are
		open?
Image is disturbed or	•	Wrong Sync setting.	• Set to factory default setting. (See below!)
unstable.			• Change Sync setting in the Picture menu for optimum
	•	Wrong Tracking	performance
		value.	• For vertical interference stripes, change the Tracking in the
			Picture menu for optimum performance.
No computer image	•	Loose cable.	• Check and secure cable connections.
projected. Message	•	No power to	• Turn on computer.
“Looking for signal		computer.
...” displays.	•	Wrong synchro-	• Adjust synchronization mode of the projector to the synchro-
		nization mode.	nization mode of the computer via Advanced Setup menu.
No video image	•	Loose cable.	• Check and secure cable connections.
projected.	•	No signal from video	• Check video picture on TV.
		source.
No video images are	•	The video source is	• In the submenu Video Standard? in the Advanced Setup
projected or the		sending a video	menu, manually change the video standard from Automatic to
video image ?does		signal and the	the type of standard in use.
something? and		projector cannot
turns off.		automatically select
		the video standard in
		use.
Mouse does not	•	Loose cable.	• Check and secure cable connections.
work.	•	Wrong connection.	• For PS/2 and ADB (Apple) mouse a special adapter is
	•	Wrong power up	necessary. Only use adapters from the original manufacturer
		sequence.	(Section 8-2).
			• The mouse emulation operates correctly only if the correct
			power up sequence has been used (refer to section 3-5.) To
			verify that the projector is programmed for the desired mouse
			emulation mode, go to the Screen Parameters? In the
			Advanced Setup/Test submenu. Check that the parameter
			MTPE presents the desired mouse mode. This is not a
			selection, but a ???? that shows the type of mouse emulation
			with which the projector is programmed to communicate.
The lamp turns off,	•	The air intake or	• Clear all obstructions from the air intake and exhaust vents.
the Standby button		exhaust vents are	• Clean or replace the filter.
and LED lights up		blocked.
and stays green as	•	The air filter is dirty.
the fan cools the
unit, and the unit
goes into Standby
Mode.
The lamp turns off,	•	The air intake or	• Clear all obstructions from the air intake and exhaust vents.
the unit goes into		exhaust vents are	• Clean or replace the filter.
Standby Mode, and		blocked.
the fan ????s more	•	The air filter is dirty.
rapidly.
Note: It is necessary to	turn the projector off and on		with the main power switch before restarting the projector.
The lamp turns off,	•	The air intake or	• Clear all obstructions from the air intake and exhaust vents.
the Standby button		exhaust vents are	• Clean or replace the filter.
blinks red for a few		blocked.
seconds, and the	•	The air filter is dirty.
unit goes into
Standby Mode.

20 3M Multimedia Projector MP8760  3M IPC 2000