NEC Projector PA622U User Manual

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7. Maintenance
This	section	 describes	 the	simple	 maintenance	 procedures	you	should	 follow	to	clean	 the	filters,	 the	lens,	 the	cabinet, 	
and	to	replace	the	lamp	and	the	filters.
❶ Cleaning the Filters
The	air-filter	 sponge	keeps	dust	and	dirt	from	 getting	 inside	the	projector	 and	should	 be	frequently	 cleaned.	If	 the	 filter	
is	dirty	or	clogged,	your	projector	may	overheat.
 WARNING
•	 Please	 do	not	 use	 a	spray	 containing	 flammable	 gas	to	remove	 dust	attached	 to	the	 filters,	 etc.	Doing	 so	may	
result	in	fires.
NOTE:	 The	message	 for	filter	 cleaning	 will	be	displayed	 for	one	 minute	 after	the	projector	 is	turned	 on	or	off.	 When	 the	message	 is	
displayed,	clean	the	filters.	The	time	to	clean	the	filters	is	set	to	[OFF]	at	time	of	shipment.	(→ page 95)
To cancel the message, press any button on the projector cabinet or the r\
emote control.
The	 two-layer	 filter	on	the	 projector	 improves	 cooling	and	dust-proof	 capabilities	 compared	with	the	conventional	
models.
The	outsides	(intake	side)	of	the	first	and	second	layer	filters	remove	dust.
To	clean	the	filter,	detach	the	filter	unit	and	the	filter	cover.
 CAUTION
•	 Before	 cleaning	the	filters,	 turn	off	the	 projector,	 disconnect	 the	power	 cord	and	then	 allow	 the	cabinet	 to	cool. 	
Failure	to	do	so	can	result	in	electric	shock	or	burn	injuries.
1. Press down on the buttons on the left and right and then 
pull the filter cover towards you to open it.
	 The	cover	will	open	about	90	degrees	before	it	stops.
Filter	cover Button
 When mounting the projector to a ceiling
	 The	 filter	cover	 will	open	 about	 90	degrees	 before	it	comes	 to	a	
stop	 at	the	 stopper	 position. 	Remove	 your	hands	 as	the	 stopper 	
will	be	detached	 if	it	is	 opened	 further.	The	 filter	 cover	 will	stop	
at	a	position	of	about	90	degrees.
	 However,	the	filter	cover	may	close	if	the	projector	vibrates. 
						

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7. Maintenance
2. Remove the filter unit by pulling out the tab.
Filter	unit Tab
3. Remove the four filters.
	 Hold	 and	remove	 the	filters	 fitted	to	the	 two	 sides	 of	the	 filter	
unit.
4. Use a vacuum cleaner to vacuum all the dust inside.
	 Get	rid	of	dust	in	the	filter.
NOTE: 
•	 Whenever	 you	vacuum	 the	filter,	 use	the	soft	 brush	 attachment	 to	
vacuum.	This	is	to	avoid	damage	to	the	filter.
•	 Do	 not	wash	 the	filter	 with	water.	 Doing	so	can	 result	 in	filter	 clog-
ging.
5.  Remove the dust on the front and back of the filter unit.
•	 Please	 also	remove	 all	dust	 from	 the	filter	 cover	 of	the	 pro-
jector. 
						

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7. Maintenance
6. Attach 4 new filters to both sides of the filter unit.
	 The 	installation 	locations 	of 	the 	filters 	are 	differentiated 	by	
whether	 there	are	any	 slits	 (notches). 	Install	 the	filter	 under	 the	
flange	around	the	filter	unit	as	follows.
(1)	Attach	 the	2	filters	 with	transparent	 frames	fitted	to	the	 grips	
to	the	side	of	the	filter	unit	where	the	knob	is	located.
•	 Turn	 over	the	side	 of	the	 filter	 with	the	transparent	 box	
and	then	install	it.
(2)	Attach	the	2	filters	 with	the	black	 lines	to	the	 side	 of	the	 filter	
unit	where	there	is	no	knob.
•	 Turn	 over	the	side	 of	the	 filter	 with	the	black	 line,	and	
then	 insert	 the	slits	 into	the	protrusions	 on	the	 filter	 unit	
to	install	it.
Flange
Knob
Slit
7. Mount the filter unit back onto the projector cabinet.
	 Insert	 the	filter	 unit	onto	 the	projector	 with	the	sides	 on	which	
the	left	and	right	hooks	are	located	on	the	outside.
Hook
8.	 Close	the	filter	cover.
	 After	 closing,	 push	the	filter	 cover	 near	the	buttons	 until	a	“click” 	
sound	is	heard. 	The	filter	cover	will	be	secured	in	position.
Button
9.	 Clear	the	filter	usage	hours.
	 Plug	 the	power	 cord	into	the	wall	 outlet,	 and	then	 turn	on	the	
projector.
	 From	 the	menu,	 select	[RESET]	→	[CLEAR	 FILTER	HOURS]. 	
(→	page	117)
	 The	interval	 time	to	clean	 the	filters	 is	set	 to	[OFF]	 at	time	 of	
shipment. 	When	 using	the	projector	 as	it	is,	 you	 do	not	 clear	
the	filter	usage	 
						

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7. Maintenance
❷ Cleaning the Lens
•	 Turn	off	the	projector	before	cleaning.
•	 The	projector	has	a	plastic	lens.	Use	a	commercially	available	plastic	lens	cleaner.
•	 Do	not	scratch	or	mar	the	lens	surface	as	a	plastic	lens	is	easily	scratched.
•	 Never	use	alcohol	or	glass	lens	cleaner	as	doing	so	will	cause	damage	to	the	plastic	lens	surface.
 WARNING
•	 Please	do	not	 use	 a	spray	 containing	 flammable	 gas	to	remove	 dust	attached	 to	the	 lens,	 etc.	Doing	 so	may	
result	in	fires.
❸ Cleaning the Cabinet
Turn	off	the	projector,	and	unplug	the	projector	before	cleaning.
•	 Use	a	dry	soft	cloth	to	wipe	dust	off	the	cabinet.
	 If	heavily	soiled,	use	a	mild	detergent. 	
•	 Never	use	strong	detergents	or	solvents	such	as	alcohol	or	thinner. 	
•	 When	cleaning	the	ventilation	 slits	or	the	 speaker	 using	a	vacuum	 cleaner,	 do	not	 force	 the	brush	 of	the	 vacuum	
cleaner	into	the	slits	of	the	cabinet.
Vacuum	the	dust	off	the	ventilation	slits.
•	 Clogged	ventilation	slits	may	cause	a	rise	in	the	internal	temperature	of	the	projector,	resulting	in	malfunction.
•	 Do	not	scratch	or	hit	the	cabinet	with	your	fingers	or	any	hard	objects
•	 Contact	your	dealer	for	cleaning	the	inside	of	the	projector.
NOTE:	 Do	not	 apply	 volatile	 agent	such	as	insecticide	 on	the	 cabinet,	 the	lens,	 or	the	 screen.	 Do	not	 leave	 a	rubber	 or	vinyl	 product	
in	prolonged	contact	with	it.	Otherwise	the	surface	finish	will	be	deteriorated	or	the	coating	may	be	stripped	off.	 
						

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7. Maintenance
❹ Replacing the Lamp and the Filters
When	the	lamp	 reaches	 the	end	 of	its	 life,	 the	LAMP	 indicator	 in	the	 cabinet	 will	blink	 red	and	 the	message	 “THE	
LAMP	HAS	REACHED	 THE	END	 OF	ITS	 USABLE	 LIFE.	PLEASE	 REPLACE	 THE	LAMP	 AND	FILTER. 	USE	 THE	
SPECIFIED	 LAMP	FOR	SAFETY	 AND	PERFORMANCE.” 	will	 appear	 (*).	Even	 though	 the	lamp	 may	still	be	working,	
replace	 the	lamp	 to	maintain	 the	optimal	 projector	 performance. 	After	 replacing	 the	lamp,	 be	sure	 to	clear	 the	lamp	
hour	meter. 	(→	page	116)
 CAUTION
•	 DO	NOT	TOUCH	 THE	LAMP	 immediately	 after	it	has	 been	 used.	It	 will	 be	extremely	 hot.	Turn	 the	projector	 off	
and	then	disconnect	the	power	cord. 	Allow	at	least	one	hour	for	the	lamp	to	cool	before	handling.
•	 Use	the	specified	lamp	for	safety	and	performance.
•	 DO	NOT	REMOVE	 ANY	SCREWS	 except	one	lamp	 cover	 screw	 and	two	lamp	 housing	 screws.	You	 could	 receive	
an	electric	shock.
•	 Do	not	break	the	glass	on	the	lamp	housing.
	 Keep	 finger	prints	off	the	 glass	 surface	 on	the	 lamp	 housing. 	Leaving	 finger	prints	on	the	 glass	 surface	 might	cause	
an	unwanted	shadow	and	poor	picture	quality.
•	 The	 projector	 will	turn	 off	and	 go	into	 standby	 mode	when	you	continue	 to	use	 the	projector	 for	another	 100	hours	
after	 the	lamp	 has	reached	 the	end	 of	its	 life. 	If	 this	 happens,	 be	sure	 to	replace	 the	lamp. 	If	 you	 continue	 to	use	
the	 lamp	 after	the	lamp	 reaches	 the	end	 of	its	 life,	 the	lamp	 bulb	may	shatter,	 and	pieces	 of	glass	 may	be	scattered	
in	the	 lamp	 case.	Do	 not	 touch	 them	as	the	 pieces	 of	glass	 may	cause	 injury.	If	 this	 happens,	 contact	your	NEC	
dealer	for	lamp	replacement.
*NOTE: This message will be displayed under the following conditions:
•	 for	one	minute	after	the	projector	has	been	powered	on
•	 when	the		(POWER)	button	on	the	projector	cabinet	or	the	STANDBY	button	on	the	remote	control	is	pressed
To turn off the message, press any button on the projector cabinet or the\
 remote control.
Optional	lamp	and	tools	needed	for	replacement:
•	 Phillips	screwdriver	(plus-head)
•	 Replacement	lamp: 	 
NP26LP
Flow of Replacing the Lamp and the Filters
Step 1.  Replace the lamp 
Step 2. Replace the filters (→ page 145)
Step 3.	 Clear	the	lamp	usage	hours	and	the	filter	usage	hours	(→ page 116,  117) 
						

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7. Maintenance
To replace the lamp: 
1. Remove the lamp cover.
(1)	Loosen	the	lamp	cover	screw
•	 The	lamp	cover	screw	is	not	removable.
(2)	Pull	the	bottom	of	the	lamp	cover	towards	you	and	remove	it.
2.  Remove the lamp housing.
(1)	Loosen	 the	two	 screws	 securing	 the	lamp	 housing	 until	the	phillips	 screwdriver	 goes	into	a	freewheeling	 condi-
tion.
•	 The	two	screws	are	not	removable.
•	 There	 is	an	 interlock	 on	this	 case	 to	prevent	 the	risk	 of	electrical	 shock.	Do	 not	 attempt	 to	circumvent	 this	
interlock.
(2)	Remove	the	lamp	housing	by	holding	it.
 CAUTION:
Make	sure	that	the	lamp	housing	is	cool	enough	to	before	removing	it.
InterlockGuide	hole 
						

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7. Maintenance
3. Install a new lamp housing.
(1)	Insert	a	new	lamp	housing	until	the	lamp	housing	is	plugged	into	the	socket. 	
(2)	Position	so	that	 the	guide	 hole	in	the	 bottom	 right	of	the	 lamp	 house	 is	over	 the	protrusion	 on	the	 projector	 then	
press	all	the	way	in.
(3)	Secure	it	in	place	with	the	two	screws.
•	 Be	sure	to	tighten	the	screws.
4. Reattach the lamp cover.
(1)	Insert	the	top	edge	of	the	lamp	cover	into	the	groove	in	the	projector	and	close	the	lamp	cover.
(2)	Tighten	the	screw	to	secure	the	lamp	cover.
•	 Be	sure	to	tighten	the	screw.
This completes the lamp replacement.
Go	on	to	the	filter	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.
•	 For	 portrait	 projection,	 the	power	 supply	 will	be	switched	 off	when	 the	lamp	 replacement	 time	(estimated)*	 is	reached.	 A	lamp	
replacement message will be displayed 100 hours before the lamp replacement time is reached.
*  The replacement time is not guaranteed.
  
						

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7. Maintenance
To	replace	the	filters:
Four	filters	are	packaged	with	the	replacement	lamp.
Honeycomb	filter	(coarse	mesh):	Large	and	small	sizes	(attached	to	the	outside	of	the	filter	unit)
Accordion	filter	(fine	mesh):	Large	and	small	sizes	(attached	to	the	inside	of	the	filter	unit)
NOTE: 
•	 Replace	all	four	filters	at	the	same	time.
•	 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	filters,	replace	the	lamp. 	(→	page	143)
1. Press down on the buttons on the left and right and then pull the filter cover towards you to open it.
	 The	cover	will	open	about	90	degrees	before	it	stops.
  When mounting the projector to a ceiling
	 The	 filter	cover	 will	open	 about	 90	degrees	 before	it	comes	 to	a	stop	 at	the	 stopper	 position. 	Remove	 your	hands	
as	the	stopper	will	be	detached	if	it	is	opened	further. 	The	filter	cover	will	stop	at	a	position	of	about	90	degrees.
	 However,	the	filter	cover	may	close	if	the	projector	vibrates.
Filter	cover Button
2. Remove the filter unit by pulling out the tab.
Filter	unit Tab 
						

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7. Maintenance
3. Remove the four filters.
	 Hold	onto	the	filters	fitted	to	both	sides	of	the	filter	unit	to	remove	the	filter	unit.
4.  Remove dust from the filter unit and the filter cover.
	 Clean	both	outside	and	inside.
5.  Attach 4 new filters to both sides of the filter unit.
	 The	 installation	 locations	of	the	 filters	 are	differentiated	 by	whether	 there	are	any	 slits	 (notches). 	Install	 the	filter	
under	the	flange	around	the	filter	unit	as	follows.
(1)	Attach	 the	2	filters	 with	transparent	 frames	fitted	to	the	 grips	 to	the	 side	 of	the	 filter	 unit	where	 the	knob	 is	lo-
cated.
•	 Turn	over	the	side	of	the	filter	with	the	transparent	box	and	then	install	it.
(2)	Attach	the	2	filters	with	the	black	lines	to	the	side	of	the	filter	unit	where	there	is	no	knob.
•	 Turn	 over	the	side	 of	the	 filter	 with	the	black	 line,	and	then	 insert	 the	slits	 into	the	protrusions	 on	the	 filter	 unit	
to	install	it.
6. Mount the filter unit back onto the projector cabinet.
	 Insert	the	filter	unit	onto	the	projector	with	the	sides	on	which	the	left	and	right	hooks	are	located	on	the	outside.
7.	 Close	the	filter	cover.
	 After	 closing,	 push	the	filter	 cover	near	 the	buttons	until	 a	“click” 	sound	 is	heard. 	The	 filter	 cover	will	 be	secured	 in	
position.
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 you 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	117) 
						

							147
8. User Supportware
❶ Operating Environment for Software Included on CD-ROM
Names and Features of Bundled Software Programs
Name	of	software	programFeatures
Virtual	Remote	Tool
(Windows	only)
When	the	computer	 and	projector	 are	connected	 using	a	network	 (wired	LAN),	
such	operations	 as	turning	 the	projector’s	 power	on	and	 off	and	 switching	 the	
signal	can	be	performed. 	It	 is	 also	 possible	 to	send	 an	image	 to	the	 projector	
and	 register	 it	as	 the	 background	 logo.	Once	 the	image	 is	registered,	 it	can	 be	
locked	to	prevent	the	logo	from	being	overwritten.
PC	Control	Utility	Pro	4
PC	Control	Utility	Pro	5	(for	Mac	
OS)
This	 is	a	software	 program	used	to	operate	 the	projector	 from	the	computer	 when	
the	computer	and	the	projector	are	connected	with	LAN. 	(→	page	137)
•	 PC	Control	Utility	Pro	4	can	be	used	with	a	serial	connection.
*	 The	following	three	software	on	the	CD-ROM	cannot	be	used	in	this	device.
	 Image	Express	Utility	Lite	(for	Windows/Mac	 OS),	Image	 Express	 Utility	2.0	(for	 Windows)	 and	Desktop	 Control	
Utility	1.0	(for	 Windows)
Download service
For	the	update	information	about	these	software	programs,	visit	our	website:
URL:	http://www.nec-display.com/dl/en/index.htm l
Operating Environment
The	following	 is	the	 operating	 environment	 for	Image	 Express	 Utility	Lite.	For	 the	operating	 environment	 of	other	 soft-
ware	program,	refer	to	the	help	function	of	each	software	program.
[Windows]
Supported	OSWindows	8	(Core	Edition)
Windows	8	Pro
Windows	8	Enterprise
Windows	7	Home	Basic
Windows	7	Home	Premium
Windows	7	Professional
Windows	7	Ultimate
Windows	7	Enterprise
Windows	 Vista	Home	Basic
Windows	Vista	Home	Premium
Windows	Vista	Business
Windows	Vista	Ultimate
Windows	Vista	Enterprise
Windows	XP	Home	Edition	(32-bit	version)	Service	Pack	3	or	later
Windows	XP	Professional	(32-bit	version)	Service	Pack	3	or	later
•	 Windows	power-saving	function	is	not	supported.
•	 To	use	the	audio	 transfer	 capability,	 Windows	8/Windows	 7/Windows	Vista	
Service	Pack	1	or	later	is	required.
[Mac]
Supported	OSMac	OS	X	v10.6,	v10.7,	v10.8