NEC Projector PA621U User Manual

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6. Installation and Connections
HDMI 1 INHDMI 2 IN
Connecting HDMI Input
You	can	connect	 the	HDMI	 output	 of	your	 DVD	 player,	 hard	disk	player,	 Blu-ray	 player,	or	notebook	 type	PC	to	the	
HDMI	IN	connector	of	your	projector.
NOTE:	The	HDMI	IN	connector	supports	Plug	&	Play	(DDC2B).
Audio cable (not supplied)
HDMI cable (not supplied)Use High Speed HDMI® Cable.
TIP:	For	users	of	audio	video	equipment	with	an	HDMI	connector:
Select	“Enhanced”	rather	than	“Normal”	if	HDMI	output	is	switchable	between	“Enhanced”	and	“Normal”.
This	will	provide	improved	image	contrast	and	more	detailed	dark	areas.
For	more	information	on	settings,	refer	to	the	instruction	manual	of	the	audio	video	equipment	to	be	connected.
•	 When	 connecting	 the	HDMI	 IN	connector	 of	the	 projector	 to	the	 DVD	 player,	 the	projector’s	 video	level	can	be	
made	 settings	 in	accordance	 with	the	DVD	 player’s	 video	level.	In	 the	 menu	 select	 [HDMI	 SETTINGS]	→	[VIDEO	
LEVEL]	and	make	necessary	settings.
•	 If	the	HDMI	input	sound	cannot	be	heard,	in	the	menu	select	[AUDIO	SELECT]	→	[HDMI]. 	
•	If	the	 HDMI	 input’s	 sound	is	not	 output,	 check	that	[OPTIONS(1)] →	[DIGITAL	 AUDIO	SELECT]	→	[HDMI]	 on	the	
projector’s	on-screen	menu	is	set	to	 “HDMI”.	(→	page	109) 
						

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6. Installation and Connections
Connecting to a Wired LAN
The	projector	comes	standard	with	a	LAN	port	(RJ-45)	which	provides	a	LAN	connection	using	a	LAN	cable.	
To	use	 a	LAN	 connection,	 you	are	required	 to	set	 the	 LAN	 on	the	 projector	 menu.	Select	 [APPLICATION	 MENU]	→ 
[NETWORK	SETTINGS]	→	[WIRED	LAN].	(→	page	121).
Example of LAN connection
Example	of	wired	LAN	connection
Server
Hub
LAN cable (not supplied)
NOTE:	Use 	a 	Categor y 	5 	or 	higher 	LAN	
cable. 
						

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6. Installation and Connections
Connecting to a Wireless LAN (sold separately)
The	separately	 sold	wireless	 LAN	unit	allows	 you	to	use	 a	wireless	 LAN	environment. 	When	 using	the	projector	 in	a	
wireless	LAN	environment,	the	IP	address	and	other	settings	must	be	made	on	the	projector.
Important:
•	 If	 you	use	 the	projector	 with	the	USB	 Wireless	 LAN	Unit	in	the	 area	 where	 the	use	 of	wireless	 LAN	equipment	 is	
prohibited,	remove	the	USB	 Wireless	LAN	Unit	from	the	projector.
•	 Buy	the	appropriate	USB	 Wireless	LAN	Unit	for	your	country	or	area.
NOTE:	
•	 The	green	LED	on	the	USB	Wireless	LAN	Unit	flashes	to	show	that	the	USB	Wireless	LAN	Unit	is	working.
•	 Your	computer’s	wireless	LAN	adapter	(or	unit)	must	be	complied	with	Wi-Fi	(IEEE802.11b/g/n)	standard.
Flow of Setting Wireless LAN
Step 1: Attach the USB Wireless LAN Unit to the projector if required.
Step 2:	 Display	[NETWORK	SETTINGS]	from	[APPLICATION	MENU]. 	(→ page 120)
Step 3:	 Select	[NETWORK	 SETTINGS]	→	[WIRELESS	 LAN]	→	[PROFILES]	 and	set	[EASY	 CONNECTION], 	
[PROFILE	1],	or	[PROFILE	2]. 	(→ page 121)
TIP:
Access	the	HTTP	 server	 function	 to	set	 [NETWORK	 SETTINGS]	→	[SETTINGS]	→	[WIRELESS]	→	[EASY	 CONNECTION]	 ,	[PRO-
FILE1],	[PROFILE2].
Mounting a wireless LAN unit
 CAUTION:
•	 The	 wireless	 LAN	unit	is	mounted	 inside	the	projector. 	Before	 mounting	 it,	turn	 off	the	 power,	 unplug	 the	power	
cord	 and	let	the	 projector	 cool	down	 completely. 	Removing	 the	filter	 unit	while	 the	projector	 is	running	 could	result	
in	burns	or	electric	shocks	from	touching	internal	parts.
NOTE:
•	The	wireless	 LAN	unit	has	a	front	 and	a	back	 and	must	 be	mounted	 in	the	 wireless	 LAN	port	in	a	specific	 direction.	 The	port	 is	
designed	 so	that	 the	unit	 cannot	 be	mounted	 in	the	 opposite	 direction,	 but	trying	 to	push	 it	in	 by	 force	 could	 damage	 the	wireless	
LAN	unit	port.
•	 To	 prevent	 damage	 due	to	static	 electricity,	 touch	a	nearby	 metal	object	 (a	door	 knob,	 aluminum	 sash,	etc.)	before	 touching	 the	
wireless	LAN	unit	to	eliminate	the	static	electricity	from	your	body.
•	 Disconnect	the	power	cord	when	mounting	and	removing	the	wireless	LAN	unit.
	 Mounting	 and	removing	 the	wireless	 LAN	unit	while	 the	projector’s	 power	is	on	 could	 damage	 the	wireless	 LAN	unit	or	result	 in	
malfunction	 on	the	 projector.	 If	the	 projector	 should	malfunction,	 turn	off	the	 projector’s	 power,	unplug	 the	power	 cord,	then	plug	
the	power	cord	back	in.	
•	 Do	 not	connect	 any	USB	 device	 other	than	the	wireless	 LAN	unit	to	the	 USB	 (LAN)	 port.	Also,	 do	not	 connect	 the	wireless	 LAN	
unit	to	the	USB	port	in	the	connector	section. 
						

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6. Installation and Connections
1. Press  the   button  to  set  the  projector  to  the  standby  mode,  then 
disconnect the power cord.
  Wait for the projector to fully cool off.
2. Remove the filter cover.
  Pressing the buttons on the left and right sides of the filter cover upwards, 
pull the filter cover towards you to remove it.
3. Remove the filter unit.
  Pull  the  hooks  on  the  left  and  right  sides  of  the  filter  unit  towards  you  to 
remove the filter unit.
4. Slowly insert the wireless LAN unit into the USB (LAN) port.
-  Remove the wireless LAN unit’s cap, set the unit with the front (the side 
with the indicator) facing upwards, hold the back edge and insert the unit 
gently.
 Next, press the wireless LAN unit in with a finger.
- The cap you have removed will be used when the wireless LAN unit is 
removed, so store it in a safe place.
NOTE:	If	the	wireless	LAN	unit	is	hard	to	insert,	do	not	push	it	in	by	force.
5. Mount the filter unit.
  Insert the filter unit onto the projector with the sides on which the left and 
right hooks are located on the outside.
6. Mount the filter cover.
  Insert  the  4  catches  on  the  top  of  the  filter  cover  into  the  grooves  in  the 
projector, then press the left and right buttons to close.
 - A click is heard and the filter cover is fastened in place.
WIRELESSWIRELESS
Filter cover
Filter unit
Button
Hook
Wireless LAN unit 
						

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6. Installation and Connections
To remove the wireless LAN unit
1. Remove the filter unit following steps 1 to 3 above.
2.  Remove the wireless LAN unit.
  If the wireless LAN unit is hard to remove, place a cloth, etc., over needle-
nose pliers to grasp the wireless LAN unit and pull it out.
NOTE:	 Do	not	 grasp	 the	wireless	 LAN	unit	with	 excessive	 force.	Doing	 so	will	 damage	
it.
3. Mount  the  filter  unit  and  filter  cover  as  described  in  steps  5  and  6 
above.
WIRELESSWIRELESS 
						

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6. Installation and Connections
Example	of	wireless	LAN	connection
(Network	Type	→	Infrastructure)
(→	page	123)PC with wireless LAN card insertedPC with built-in wireless LAN function
Wired LAN
Wireless access point
USB Wireless LAN Unit
To	enable	 direct	communication	 (i.e.,	peer-to-peer)	 between	computers	 and	projectors,	 you	need	 to	select	 the	Ad	
Hoc	mode. 	(→	page	123)
PC with wireless LAN card insertedPC with built-in wireless LAN function
Example	of	wireless	LAN	connection	(Network	 Type	→	Ad	Hoc)
USB Wireless LAN Unit 
						

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6. Installation and Connections
Projecting Portrait Images
The	projector	can	be	used	on	its	left	side	(when	viewed	from	the	front)	to	project	portrait	images.
 Caution on placing in portrait orientation
•	 When	using	the	projector	 on	its	left	 side,	 do	not	 block	 the	intake	 vents.	Doing	 so	will	 cause	 build-up	 heat	inside	
the	projector.
•	 When	using	the	projector	on	its	left	side,	attach	a	stand	supporting	the	projector.
•	 Lock	the	lens	shift	after	completing	lens	shift	adjustment. 	
Specifications	of	stand	for	projecting	portrait	images
For	designing	a	stand	for	projecting	portrait	images,	consult	your	dealer.
1.	 Allow	310	x	170	mm	of	space	for	the	intake	vents.
2.	 Allow	130	mm	or	longer	for	opening	the	filter	cover	(intake	vent).
3.	 Use	the	4	screws	on	the	bottom	of	the	projector.
	 Location	of	4	screws:	200	x	250	mm
	 Screw:	M4	x	8	mm
•	 Design	the	stand	so	that	it	will	not	contact	the	rear	feet	of	the	projector.
•	 Design	the	stand	in	such	a	way	that	it	will	not	fall	down	easily. 
						

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6. Installation and Connections
Reference drawing
[Side View][Front View]
4-M4 screw hole
Remove tilt foot 130 or longer
Filter cover (open)
Horizontal adjuster [Bottom View]
Filter cover 310 mm or longer
Rear foot
Locking	Lens	Shift
1.  Pull and remove the lever cover.
 
2.  Loosen the screw.
•	 The	screw	cannot	be	removed. 	 
						

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6. Installation and Connections
3. Move the lever upward until it stops and then secure the screw.
•	 While	holding	the	lever	upward,	tighten	the	screw.
•	 To	adjust	the	lens	shift	again,	loosen	the	screw	and	do	this.
4.  Put the lever cover back.
  
						

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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.
1 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.
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	103)
To	cancel	the	message,	press	any	button	on	the	projector	cabinet	or	the	remote	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. Push  up  the  buttons  on  the  left  and  right  to  release  the 
filter unit and pull it out.
2.  Remove the filter unit by pulling out the tab.
3.  Remove the four filters.
(1)  Turn the filter unit over and pull out the two soft accordion 
filters.
Filter coverButton
Filter unitTab