3M 2100 manual Troubleshooting, Symptom Check CAUSE/SOLUTIONS

MODEL 2100 OVERHEAD PROJECTOR

SECTION 3 - TROUBLESHOOTING

SYMPTOM		CHECK		CAUSE/SOLUTIONS
Projected image is:	-	Is lamp of proper type? (See	- Damaged or misadjusted optics
a. Corners of projected image		label on underside of top cover)		components (requires
appear red (brown) or blue.	-	Is lamp properly seated down in		realignment of optics).
		its socket and vertical?	- Head "knocked" out of
	- If unit is equipped with a lamp			alignment.
		changer, is changer lever fully	-	Adjust Color Tuning
		seated in the number one
		position?
b. Top, bottom, or sides of	-	Is lamp of proper type? (See	-	Adjust optics components
projected image are not		label on underside of Top		(requires realignment of
focused.		Cover)		optics).
	- Is lamp properly seated down in		-	Lamp not seated.
		its socket and vertical?	-	Reflector
	- If unit is equipped with a lamp		-	Condenser
		changer, is changer lever fully
		seated in the number one
		position?
	- Are any of the optics
		components noticeably
c. Not as bright as it should		"knocked" out of alignment?
be.	-	Is lamp of proper type? (See	-	Replace lamp.
		label on underside of Top	- Damaged or misadjusted optics
		Cover)		components (requires
	- Is lamp properly seated down in			realignment of optics).
		its socket and vertical?	-	Corroded wiring connection.
	- If unit is equipped with a lamp		-	Wrong lamp on
		changer, is changer lever fully	-	Reflector broken/missing
		seated in the number one
		position?
	- Has another FNT lamp been
Focus mechanism slips or is		tried?	- To tighten, turn screw
too tight.	-	Focus tension screw needs		counterclockwise. To loosen,
		adjustment		turn clockwise. Add update kit
				if required. (see next page)
Lamp does not energize, but			-	Replace lamp.
fan motor does energize.	-	Is lamp burned out?	-	Replace overheat thermostat.
	-	Is lamp of proper type? (See	- Replace lamp sensing switch
		label on underside of top cover)		(only on projectors equipped
	- Is lamp properly seated down in			with lamp changer).
		its socket and vertical?	- Loose or broken wire
	- If unit is equipped with a lamp			connection.
		changer, is changer lever fully	-	Defective power supply.
		seated in the number one
Neither lamp nor fan motor		position?	-	On-off switch defective.
energizes.	-	Is power cord plugged into	-	Defective interlock switch.
		electrical outlet?	- Loose or broken wire
	- Is outlet supplying power to			connection.
		projector?	- On-off switch out of
				adjustment.
			- Replace Fuse (if equipped)

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