NEC Projector P452H User Manual

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(2) Vacuum off accumulated dust and dirt on inside and outside of 
the filter case.
(3) Fix a new Filter (B) onto the filter case.
4. Remove the lamp housing.
(1) Loosen the three screws securing the lamp housing until the 
phillips screwdriver goes into a freewheeling condition.
•	 The	three	screws	are	not	removable.
(2) Remove the lamp housing by holding it.
 CAUTION:
Make	sure	that	the	lamp	housing	is	cool	enough	to	before	
removing	it.
8. Maintenance  

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5. Install a new lamp housing.
(1)	Insert	a	new	lamp	housing	until	the	lamp	housing	is	plugged	
into	the	socket.	
(2) Push the top center of the lamp housing to secure it.
(3) Secure it in place with the three screws.
•	 Be	sure	to	tighten	the	screws.
6. Insert for resetting the filter case.
8. Maintenance  

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7. Reattach the lamp cover.
(1)	Slide	the	lamp	cover	back	until	it	snaps	into	place.a
b
(2) Tighten the screw to secure the lamp cover.
•	 Be	sure	to	tighten	the	screw.
This	completes	the	lamp	and	Filter	(B)	replacement.
Go	on	to	the	Filter	(A)	replacement.
NOTE:	When	you	continue	to	use	the	projector	for	another	100	hours	after	the	lamp	has	reached	the	end	of	its	life,	the	projector	
cannot	turn	on	and	the	menu	is	not	displayed.
If	this	happens,	press	the	HELP	button	on	the	remote	control	for	10...

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To	replace	the	Filter	(A):
NOTE:	
•	 Before	replacing	the	filters,	wipe	off	dust	and	dirt	from	the	projector	cabinet.	
•	 The	projector	is	precision	equipment.	Keep	out	dust	and	dirt	during	filter	replacement.
•	 Do	not	wash	the	filters	with	soap	and	water.	Soap	and	water	will	damage	the	filter	membrane.	
•	 Put	filters	into	place.	Incorrect	attachment	of	a	filter	may	cause	dust	and	dirt	to	get	into	the	inside	of	the	projector.	
Before	replacing	the	Filter	(A),	make	sure	to	replace	the	lamp	and...

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4. Fix a new Filter (A) onto the filter case.
•	 Set	the	cut	off	part	of	the	Filter	(A)	meeting	with	the	knob	part	
on the filter case.
Knob
Cut off
5. Insert the Filter case to the projector cabinet.
	 Make	sure	that	the	filter	case	is	inserted	in	the	correct	orientation.
This	completes	the	filter	replacement.
Go	on	to	the	clearing	lamp	and	filter	hour	meters.
To	clear	the	lamp	usage	hours	and	the	filter	usage	hours:
1. Place the projector where y ou use it.
2. Plug the power cord into the wall...

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9. Appendix
❶ Troubleshooting
This	section	helps	you	resolve	problems	you	may	encounter	while	setting	up	or	using	the	projector.
Indicator Messages
POWER Indicator
Indicator ConditionProjector	ConditionNoteOffThe main power is offWithout connecting the power cable�Blinking 
lightBlue0�5 sec On,0�5 sec OffThe projector is getting ready to turn on�Wait for a moment
2�5 sec On,0�5 sec OffOff Timer is activated� Program timer (off time) is activated�–
Orange (short flashes) Cooling Wait for a moment...

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Over-Temperature Protection
If	the	projector	inside	temperature	gets	too	high,	the	lamp	will	be	turned	off	automatically	and	the	status	indicator	will	
start	to	blink	(2-cycle	On	and	Off).
Should	this	happen,	do	the	following:
•	 Unplug	the	power	cord	after	the	cooling	fans	stop.
•	 Move	the	projector	to	a	cooler	location	if	the	room	where	you	are	presenting	is	particularly	too	warm.
•	 Clean	the	vents	if	they	are	clogged	with	dust.
•	 Wait	about	60	minutes	until	the	inside	of	the	projector	becomes...

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Common Problems & Solutions
(→	“POWER/STATUS/LAMP	Indicator”	on	page	125.)
ProblemCheck	These	Items
Does not turn on
or shut down•	 Check	that	the	power	cord	is	plugged	in	and	that	the	power	button	on	the	projector	cabinet	or	the	remote	control is on� (→ pages 11, 12)•	 Ensure	that	the	lamp	cover	is	installed	correctly.	(→ page 121)•	 Check	to	see	if	the	projector	has	overheated.	If	there	is	insufficient	ventilation	around	the	projector	or	if	the	room where you are presenting is particularly warm,...

128
ProblemCheck	These	Items
Image is scrolling 
vertically, horizontally 
or both•	 Check	the	computer’s	resolution	and	frequency.	Make	sure	that	the	resolution	you	are	trying	to	display	is	supported by the projector� (→ page 136)•	 Adjust	the	computer	image	manually	with	the	[HORIZONTAL]/[VERTICAL]	in	the	[IMAGE	OPTIONS].	(→ 
page 47)
Remote control does 
not work
•	 Install	new	batteries.(→ page 9)•	 Make	sure	there	are	no	obstacles	between	you	and	the	projector.•	 Stand	within	22	feet	(7	m)	of	the...

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❷ Specifications
This	section	provides	technical	information	about	projector’s	performance.
Model nameNP-P502HNP-P502W NP-P452HNP-P452W
Method1	Chip	DLP	typeSpecifications	of	main	partsDMD	panelSize0.65"	(aspect	ratio:	16:9)0.65"	(aspect	ratio:	16:10)0.65"	(aspect	ratio:	16:9)0.65"	(aspect	ratio:	16:10)Pixels	(*1)2,073,600	(1920	dots	×	1080	lines)1,024,000	(1280	dots	×	800	lines)2,073,600	(1920	dots	×	1080	lines)1,024,000	(1280	dots	×	800	lines)Projection	lensesF	=	2.0,	f	=	18.2–31.1...