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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.
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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.
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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	seconds	to	reset	the	lamp	clock	back	to	zero.
When	the	lamp	time	clock	is	reset	to	zero,	the	LAMP	indicator	goes	out.
	
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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	Filter	(B).	(→	page	119)
1. Pinch the knob at the bottom of the filter case and pull it out.
•	 If	you	put	the	projector	upside	down	for	replacing	the	Filter	(A)	
as the illustration, please lay a mat as a cloth for protecting the 
cabinet top from damage.
Knob
2. Remove the Filter (A) from the filter case.
Filter case
Filter (A)
3.	 Vacuum	all	the	dust	on	inside	and	outside	of	the	filter	case.
•	 Get	rid	of	dust	accumulated	on	the	intake	vent	on	the	projector.
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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 outlet, and then turn on the projector.
3.	 Clear	the	lamp	usage	hours	and	the	filter	usage	hours.
1. From the menu, select [RESET] → [CLEAR LAMP HOURS] and reset the lamp usage hours.
2.	 Select	[CLEAR	FILTER	HOURS]	and	reset	the	filter	usage	hours.	(→ page 68)
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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
Orange (long flashes)
On Timer is activated�Program timer (on time) is activated�–
Steady 
light Blue
The projector is turned on�–
Orange Sleep mode* While the STATUS Indicator lights in Green
In Standby condition [NETWORK STAND-
BY] is selected for [STANDBY MODE] –
Red In Standby condition [NORMAL] is 
selected for [STANDBY MODE] –
STATUS Indicator
Indicator ConditionProjector	ConditionNoteOff
Normal or Standby –
Blinking 
light Red1 cycle (0�5 sec On, 2�5 sec Off)Cover errorThe lamp cover is not set properly�  Reset the lamp cover� (→ page 122)2 cycle (0�5 sec On, 0�5 sec Off)Temperature errorThe projector is overheated� Move the projector to a cooler location�3 cycle (0�5 sec On, 0�5 sec Off)Power errorPower unit is not working properly� Contact your dealer�
4 cycle (0�5 sec On, 0�5 sec Off)Fan errorFans will not work correctly�
6 cycle (0�5 sec On, 0�5 sec Off)Lamp errorThe lamp is not turned on�  Wait over 1 minute and power on the projector again�  Even though the lamp is not turned on, ask your dealer or service personnel for repair�Orange1 cycle (0�5 sec On, 2�5 sec Off)Network conflict 
Both the built-in wired LAN and the wireless LAN cannot be connected to the same network at the same time�To use both built-in wired LAN and wireless LAN at the same time, connect them to different networks�
NOTE:	In	the	Standby	condition,	the	status	indicator	
on	the	cabinet	does	not	blink	in	orange	even	if	the	
network	conflictsGreen0�5 sec On, 0�5 sec OffRe-firing the lamp (The projector is cool-
ing down)Wait for a moment
Steady 
light Green
Sleep mode* While the POWER Indicator lights in Orange
Orange
CONTROL PANEL LOCK is on�You have pressed cabinet button when Control Panel Lock is on�CONTROL ID errorRemote control ID and projector ID are not matched�
*	 The	sleep	mode	refers	to	the	mode	in	which	the	restrictions	to	functions	due	to	the	[STANDBY	MODE]	settings	hav e	been	elimi-
nated.
LAMP Indicator
Indicator ConditionProjector	ConditionNoteOff Normal –
Blinking 
light RedLamp has reached its end of life� Lamp replacement message will be displayed�Replace the lamp�
Steady 
lightRedLamp has been used beyond its limit� The projector will not turn on until the lamp is replaced�
Replace the lamp�
Green
[ECO MODE] is set to [AUTO ECO], [NOR-
MAL] or [ECO] – 
						

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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	cool	enough.
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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, move the projector t\
o a cooler location�•	 Check	to	see	if	you	continue	to	use	the	projector	for	another	100	hours	after	the	lamp	has	reached	the	end	of its life� If so, replace the lamp� After replacing the lamp, reset the lamp hours used� (→ page 68)•	 The	lamp	may	fail	to	light.	Wait	a	full	minute	and	then	turn	on	the	power	again.•	 Set	[FAN	MODE]	to	[HIGH	ALTITUDE]	when	using	the	projector	at	altitudes	approximately	4000	feet/1200	meters or higher� Using the projector at altitudes approximately 4000 feet/1200 meters or\
 higher without setting to [HIGH ALTITUDE] can cause the projector to overheat and the projector could shut down� If this happens, wait a couple minutes and turn on the projector� (→ page 59) If you turn on the projector immediately after the lamp is turned off, t\
he fans run without displaying an image for some time and then the projector will display the image� Wait for a moment�•	 In	case	it’s	hard	to	think	the	trouble	is	not	caused	on	the	above	mentioned	conditions,	unplug	the	power	cord from the outlet� Then wait 5 minutes before plugging it in again� (→ page 24)
Will turn off
•	 Ensure	that	the	[OFF	TIMER]	or	[AUTO	POWER	OFF]	is	off.	(→ page 52, 62)
No picture
•	 Check	if	the	appropriate	input	is	selected.	(→ page 14) If there is still no picture, press the SOURCE button or one of the source buttons again�•	 Ensure	your	cables	are	connected	properly.•	 Use	menus	to	adjust	the	brightness	and	contrast.	(→ page 45)•	 Check	that	the	AV	MUTE	(image	off)	buttons	are	not	pressed.•	 Reset	the	settings	or	adjustments	to	factory	preset	levels	using	the	[RESET]	in	the	Menu.	(→ page 68)•	 Enter	your	registered	keyword	if	the	Security	function	is	enabled.	(→ page 30)•	 If	the	HDMI	1	IN	or	the	HDMI	2	IN	signal	cannot	be	displayed,	try	the	following.- Reinstall your driver for the graphics card built in your computer, or use the updated driver� For reinstalling or updating your driver, refer to the user guide accompanied with your computer or graphics card, or contact the support center for your computer manufactu\
rer� Install the updated driver or OS on your own responsibility� We are not liable for any trouble and failure caused by this installation\
�•	 Signals	may	not	be	supported	depending	on	the	HDBaseT	transmission	device.	IR	and	RS232C	cannot	be	used in certain cases as well�•	 Be	sure	to	connect	the	projector	and	notebook	PC	while	the	projector	is	in	standby	mode	and	before	turning	on the power to the notebook PC� In most cases the output signal from the notebook PC is not turned on un\
less connected to the projector before being powered up�*	 If	the	screen	goes	blank	while	using	your	remote	control,	it	may	be	the	result	of	the	computer’s	screen-saver or power management software�•	 See	also	the	next page�
Picture suddenly 
becomes dark•	 Check	if	the	projector	is	in	the	Forced	ECO	mode	because	of	too	high	ambient	temperature.	If	this	is	the	case, lower the internal temperature of the projector by selecting [HIGH\
] for [FAN MODE]� (→ page 59)
Color tone or hue is 
unusual
•	 Check	if	an	appropriate	color	is	selected	in	[WALL	COLOR].	If	so,	select	an	appropriate	option.	(→ page 
51)
•	 Adjust	[HUE]	in	[PICTURE].	(→ page 45)
Image	isn’t	square	to	the screen•	 Reposition	the	projector	to	improve	its	angle	to	the	screen.	(→ page 16)•	 Use	the	Keystone	correction	function	to	correct	the	trapezoid	distortion.	(→ page 21)
Picture is blurred
•	 Adjust	the	focus.	(→ page 19)•	 Reposition	the	projector	to	improve	its	angle	to	the	screen.	(→ page 16)•	 Ensure	that	the	distance	between	the	projector	and	screen	is	within	the	adjustment	range	of	the	lens.	(→ 
page 69)
•	 Has	the	lens	been	shifted	by	an	amount	exceeding	the	guaranteed	range?	(→ page 73)•	 Condensation	may	form	on	the	lens	if	the	projector	is	cold,	brought	into	a	warm	place	and	is	then	turned	on� Should this happen, let the projector stand until there is no condensat\
ion on the lens�
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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	projector.	(→ page 9)
Indicator is lit or 
blinking
•	 See	the	POWER/STATUS/LAMP	Indicator.	(→ page 125)
Cross color in RGB 
mode
•	 Press	the	AUTO	ADJ.	button	on	the	projector	cabinet	or	the	remote	control.	(→ page 23)•	 Adjust	the	computer	image	manually	with	[CLOCK]/[PHASE]	in	[IMAGE	OPTIONS]	in	the	menu.	(→ page 
46)
For	more	information	contact	your	dealer.
If there is no picture, or the picture is not displayed correctly.
•	 Power	on	process	for	the	projector	and	the	PC.
	 Be	sure	to	connect	the	projector	and	notebook	PC	while	the	projector	is	in	standby	mode	and	before	turning	on	the	
power	to	the	notebook	PC.
	 In	most	cases	the	output	signal	from	the	notebook	PC	is	not	turned	on	unless	connected	to	the	projector	before	
being	powered	up.
NOTE:	You	can	check	the	horizontal	frequency	of	the	current	signal	in	the	projector’s	menu	under	Information.	If	it	reads	“0kHz”,	
this	means	there	is	no	signal	being	output	from	the	computer.	(→	page	67	or	go	to	next	step)
•	 Enabling	the	computer’s	external	display.
	 Displaying	an	image	on	the	notebook	PC’s	screen	does	not	necessarily	mean	it	outputs	a	signal	to	the	projector.	
When	using	a	PC	compatible	laptop,	a	combination	of	function	ke ys	will	enable/disab le	the	exter nal	display .	Usually,	
the	combination	of	the	“Fn”	key	along	with	one	of	the	12	function	ke ys	gets	the	exter nal	display	to	come	on	or	off.	
For	example,	NEC	laptops	use	Fn	+	F3,	while	Dell	laptops	use	Fn	+	F8	key	combinations	to	toggle	through	exter nal	
display	selections.
•	 Non-standard	signal	output	from	the	computer
	 If	the	output	signal	from	a	notebook	PC	is	not	an	industry	standard,	the	projected	image	may	not	be	display ed	
correctly.	Should	this	happen,	deactivate	the	notebook	PC’s	LCD	screen	when	the	projector	display	is	in	use.	Each	
notebook	PC	has	a	different	way	of	deactivate/reactiv ate	the	local	LCD	screens	as	described	in	the	previous	step.	
Refer	to	your	computer’s	documentation	for	detailed	information.
•	 Image	displayed	is	incorrect	when	using	a	Mac
	 When	using	a	Mac	with	the	projector,	set	the	DIPswitch	of	the	Mac	adapter	(not	supplied	with	the	projector)	accord-
ing	to	your	resolution.	After	setting,	restart	y our	Mac	f or	the	changes	to	tak e	aff ect.
	 For	setting	display	modes	other	than	those	supported	by	your	Mac	and	the	projector,	changing	the	DIP	switch	on	
a	Mac	adapter	may	bounce	an	image	slightly	or	may	display	nothing.	Should	this	happen,	set	the	DIP	switch	to	
the	13"	fixed	mode	and	then	restart	your	Mac.	After	that,	restore	the	DIP	switches	to	a	display able	mode	and	then	
restart	the	Mac	again.
NOTE:	A	Video	Adapter	cable	manufactured	by	Apple	Inc.	is	needed	for	a	MacBook	which	does	not	have	a	mini	D-Sub	15-pin	terminal.
•	 Mirroring	on	a	MacBook
*	 When	using	the	projector	with	a	MacBook,	output	may	not	be	set	to	1024	×	768	unless	“mirroring”	is	off	on	your	
MacBook.	Refer	to	o wner’s	man ual	supplied	with	y our	Mac	computer	f or	mirror ing.
•	 Folders	or	icons	are	hidden	on	the	Mac	screen
	 Folders	or	icons	may	not	be	seen	on	the	screen.	Should	this	happen,	select	[View]	→	[Arrange]	from	the	Apple	
menu	and	arrange	icons.
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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	mmZoomManual	(Zoom	Ratio	=	1.7)Focus ManualLens	shiftingH:	±25%,	V:	+62%,	−0%H:	±28%,	V:	+59%,	−0%H:	±25%,	V:	+62%,	−0%H:	±28%,	V:	+59%,	−0%
Lamp375	W	AC	(299	W	in	NORMAL)(226	W	in	ECO)
335	W	AC	(267	W	in	NORMAL)(202	W	in	ECO)Optical	device	Optical	isolation	by	dichroic	mirror,	combining	by	dichroic	prismLight	output	(*2) (*3)5,000	lm	(NORMAL:	80%,	ECO:	60%)4,500	lm	(NORMAL:	80%,	ECO:	60%)Contrast	ratio	(*2)	(all	white/all	black)6,000:1	with	lamp	controlScreen	size	(throw	distance)	30	to	300	inches	(0.8–14.2	m)30	to	300	inches	(0.8–14.5	m)30	to	300	inches	(0.8–14.2	m)30	to	300	inches	(0.8–14.5	m)Projection	AngleFrom	0	to	15.9	deg	at	80"From	0	to	14.8	deg	at	80"From	0	to	15.9	deg	at	80"From	0	to	14.8	deg	at	80"Projection	Distance	(From	Projection	Lens)Wide:	From	0.8	to	8.2	mTele:	From	1.4	to	14.2	m
Wide:	From	0.8	to	8.4	mTele:	From	1.4	to	14.5	m
Wide:	From	0.8	to	8.2	mTele:	From	1.4	to	14.2	m
Wide:	From	0.8	to	8.4	mTele:	From	1.4	to	14.5	mColor	reproducibility	10-bit	color	processing	(approx.	1.07	billion	colors)Scanning	frequencyHorizontalAnalog:	15	kHz,	24	to	100	kHz	(24	kHz	or	g reater	f or	RGB	inputs),	conf orming	to	VESA	standardsDigital:	15	kHz,	24	to	153	kHz,	conforming	to	VESA	standardsVerticalAnalog:	48	Hz,	50	to	85	Hz,	100,	120	Hz	conf orming	to	VESA	standardsDigital:	24,	25,	30,	48	Hz,	50	to	85	Hz,	100,	120	Hz	conf orming	to	VESA	standardsMain	adjustment	functionsManual	zoom,	manual	focus,	manual	lens	shift,	input	signal	switching	(HDMI1/HDMI2/COMPUTER/VIDEO/HDBaseT),	auto	image	adjustment,	picture	maginification,	mut-ing	(video),	power	on/standby,	on-screen	display/selection,	etc.Max.	display	resolution	(horizontal	×	v erti-
cal)Analog:	1920	×	1200	(handled	with	Adv anced	AccuBlend)Digital:	1920	×	1080	(handled	with	Advanced	AccuBlend)Input	signalsR,G,B,H,VRGB:	0.7	Vp-p/75	ΩY:	1.0	Vp-p/75	Ω	(with	Negative	Polarity	Sync)Cb,	Cr	(Pb,	Pr):	0.7	Vp-p/75	ΩH/V	Sync:	4.0	Vp-p/TTLComposite	Sync:	4.0	Vp-p/TTLSync	on	G:	1.0	Vp-p/75	Ω	(with	Sync)Composite	video	1.0	Vp-p/75	Ω
ComponentY:	1.0	Vp-p/75	Ω	(with	Sync)Cb,	Cr	(Pb,	Pr):	0.7	Vp-p/75	ΩDTV:		480i,	480p ,	720p ,	1080i,	1080p	(60	Hz) 576i,	576p,	720p,	1080i,	1080p	(50	Hz)DVD:	Progressive	signal	(50/60	Hz)AudioStereo	L/R:	0.5	Vrms/22	kΩ	or	overInput/output	terminalsComputer/Com-
ponentVideo	input	Mini	D-Sub	15-pin	×	1Video	output	Mini	D-Sub	15-pin	×	1Audio	input	RCA	×	2	(For	Video),	Stereo	mini	J ack	(F or	Computer)Audio	output	Stereo	mini	Jack	(Selected	from:	Computer/Video/HDMI)HDMIVideo	input	HDMI®	Terminal	type	A	×	2Deep	Color	(color	depth):	8-/10-/12-bit	compatib leColorimetry:	RGB,	YcbCr444	and	YcbCr422	compatib leLipSync	compatible,	HDCP	compatible	(*4),	Supports	3DAudio	input	HDMI:	Sampling	frequency	–	32/44.1/48	kHz,	Sampling	bits	–	16/20/24	bits
9. Appendix