NEC Projector Px750u User Manual

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3. Convenient Features
 Correcting Horizontal and Vertical Keystone Distortion 
[CORNERSTONE]
Use	the	3D	Reform	 feature	to	correct	 keystone	 (trapezoidal)	 distortion	to	make	 the	top	or	bottom	 and	the	left	or	right	
side	of	the	screen	longer	or	shorter	so	that	the	projected	image	is	rectangular.
Cornerstone
1.	 Press	and	hold	the	3D	REFORM	button	for	a	minimum	of	2	seconds	to	reset	current	adjustments.
  Current adjustments for [KEYSTONE] or [CORNERSTONE] will be cleared.
2.	 Project	an	image	so	that	the	screen	is	smaller	than	the	area	of	the	raster.
3.	 Pick	up	any	one	of	the	corners	and	align	the	corner	of	the	image	with	a	corner	of	the	screen.
Projected image
The drawing shows the up-
per right corner.
4.	 Press	the	3D	REFORM	button	twice.
 The Cornerstone adjustment screen is displayed.
5.	 Use	 the		button	 to	select	 one	icon	 ()	which	 points	 in	the	 direction	 you	wish	 to	move	 the	projected	
image	frame.
6.	 Press	the	ENTER	button.
TIP:	If 	you 	are 	adjusting 	[KEYSTONE], 	[CORNERSTONE] 	will 	not 	be	
available.	 If	this	 happens,	 press	and	hold	 the	3D	REFORM	 button	for	a	
minimum	of	2	seconds	to	reset	the	[KEYSTONE]	adjustments.
The drawing shows the upper left 
icon ( ) is selected. 
						

							38
3. Convenient Features
7.	 Use	the		button	to	move	the	projected	image	frame	as	shown	on	the	example.
8.	 Press	the	ENTER	button.
9.	 Use	the		button	to	select	another	icon	which	points	in	the	direction.
	 On	the	Cornerstone	adjustment	screen,	select	[EXIT]	or	press	the	EXIT	button	on	the	remote	control.
 The confirmation screen is displayed.
10.	Press	the	 or 	button	to	highlight	the	[OK]	and	press	the	ENTER	button.
This	completes	the	Cornerstone	correction.
Selecting	[CANCEL]	will	return	to	the	adjustment	screen	without	saving	changes	(Step	3).
Selecting	[RESET]	will	return	to	the	factory	default.
Selecting	[UNDO]	will	exit	without	saving	changes.
NOTE:	To	reset	the	3D	Reform	correction	setting	values,	press	and	hold	the	3D	REFORM	button	for	a	minimum	of	2	seconds. 
						

							39
3. Convenient Features
The	adjustable	ranges	for	3D	Reform	are	as	follows:
HORIZONTALVERTICAL
CORNERSTONE
Max. 	+/−	35°	approx.Max.	+/−	30°	approx.KEYSTONE
*	 The	following	are	conditions	under	which	the	maximum	angle	is	achieved:
•	 When	the	NP18ZL	lens	is	used
•	 When	the	lens	shift	is	set	to	the	center
	 When	 the	lens	 shift	is	used	 and	yet	the	 image	 is	not	 displayed	 in	the	 center	 of	the	 screen,	 the	adjustable	 range	
will	be	increased	or	decreased.
•	 Image	is	projected	in	maximum	wide	with	the	zoom
NOTE: 
•	 Even	when	the	projector	is	turned	on,	the	last	used	correction	values	are	applied.
•	 If	the	Cornerstone	 screen	is	unavailable	 (grayed),	press	and	hold	 the	3D	REFORM	 button	for	a	minimum	 of	2	seconds	 to	reset	
the	current	correction	data.	The	Cornerstone	function	becomes	available.
•	 Turning	 on	the	 projector	 will	reset	 the	previous	 correction	 setting	values	and	correct	 distortion	 anew	if	the	 projection	 angle	is	
changed from the last use.
	 If	the	projection	angle	is	the	same	as	in	the	last	use,	the	previous	correction	setting	values	are	retained	in	the	memory.
•	 The	range	of	keystone	correction	is	not	the	maximum	tilt	angle	of	projector.
NOTE:	Using	3D	Reform	correction	can	cause	the	image	to	be	slightly	blurred	because	the	correction	is	made	electronically. 
						

							40
3. Convenient Features
 Displaying Two Pictures at the Same Time
The	projector	 has	a	feature	 that	allows	 you	to	view	 two	different	 signals	simultaneously. 	You	 have	 two	modes: 	PIP	
mode	and	PICTURE	BY	PICTURE	mode.
From	the	menu	you	can	select	[SETUP]	→	[BASIC]	→	[PIP/PICTURE	BY	PICTURE]. 	
The	[PIP/PICTURE	BY	PICTURE]	menu	item	has	the	following	three	options: 	MODE,	POSITION,	and	SOURCE.
Use	the		or		button	to	select	[MODE],	[POSITION]	or	[SOURCE]	and	press	the	ENTER	button.
Selecting the PIP or PICTURE BY PICTURE Mode [MODE]
This	option	allows	you	to	select	two	modes:	PIP	and	SIDE	BY	SIDE.
Use	the		or		button	to	select	[PIP]	or	[PICTURE	BY	PICTURE]	and	press	the	ENTER	button.
PIP:	This	option	allows	you	to	view	a	sub	picture	in	the	main	picture.
 Main picture
Sub
picture
PICTURE	BY	PICTURE: 	This	allows	you	to	view	two	pictures	side	by	side.
 Main picture Sub picture
NOTE: 
•	 The	main	picture	will	be	displayed	on	the	left	side	and	the	sub	picture	on	the	right	side.
•	 The	main	picture	signal	supports	the	COMPUTER	1,	COMPUTER	2,	and	COMPUTER	3	connectors.
	 The	sub	picture	signal	supports	the	VIDEO	IN	and	S-VIDEO	IN	connectors.
•	 The	main	picture	supports	an	RGB	signal	with	a	resolution	of	1280	×	1024	pixels	or	less. 
						

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3. Convenient Features
Viewing	Two	Pictures
1.	 Press	the	PIP	button	on	the	remote	control.
	 The	PIP/PICTURE	BY	PICTURE	SOURCE	screen	will	be	displayed.
 
2.	 Use	the	 or 	button	to	select	the	source	and	press	the	ENTER	button.
	 The	PIP	screen	 or	PICTURE	 BY	PICTURE	 screen	will	be	displayed,	 depending	 on	which	 was	selected	 in	the	
[MODE] setting screen.
 
3.	 Press	the	PIP	button	again	to	return	to	the	normal	screen	(single	picture).
TIP:
•	 Selecting	another	source	will	return	to	the	normal	screen.
•	 Selecting	a	source	not	supported	for	the	main	picture	or	the	sub	picture	will	return	to	the	normal	screen.
[POSITION]
This	option	allows	you	to	select	the	position	of	a	sub	picture	in	the	main	picture.
NOTE: 
•	 The	default	setting	is	[BOTTOM-RIGHT].
Use	the		or		button	to	select	the	sub	picture’s	position	and	press	the	ENTER	button.
The	options	are: 	TOP-LEFT,	 TOP-RIGHT,	BOTTOM-LEFT,	and	BOTTOM-RIGHT.
The	following	adjustments	and	settings	are	available	for	the	main	picture	only.
-	Adjusting	picture
-	Magnifying	a	picture
The	following	operations	are	available	for	both	the	main	and	sub	pictures.
-	Picture	mute
-	Freezing	a	moving	picture 
						

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3. Convenient Features
 Preventing the Unauthorized Use of the Projector [SECURITY]
A	keyword	 can	be	set	 for	your	 projector	 using	the	Menu	 to	avoid	 operation	 by	an	 unauthorized	 user.	When	 a	keyword	
is	 set,	 turning	 on	the	 projector	 will	display	 the	Keyword	 input	screen. 	Unless	 the	correct	 keyword	 is	entered,	 the	pro-
jector	cannot	project	an	image. 	
•	The	[SECURITY]	setting	cannot	be	cancelled	by	using	the	[RESET]	of	the	menu.
To enable the Security function:
1.	 Press	the	MENU	button.
  The menu will be displayed.
2.	 Press	 the		button	 twice	to	select	 [SETUP]	 and	press	 the		button	 or	the	 ENTER	 button	to	select	 [BA-
SIC].
3.	 Press	the		button	to	select	[INSTALLATION(2)].
4.	 Press	the		button	three	times	to	select	[SECURITY]	and	press	the	ENTER	button.
  The OFF/ON menu will be displayed.
5.		Press	the		button	to	select	[ON]	and	press	the	ENTER	button.
	 The	[SECURITY	KEYWORD]	screen	will	be	displayed.
6.	 Type	in	a	combination	of	the	four		buttons	and	press	the	ENTER	button.
NOTE:	A	keyword	must	be	4	to	10	digits	in	length.
	 The	[CONFIRM	KEYWORD]	screen	will	be	displayed.
NOTE:	Make	a	note	of	your	password	and	store	it	in	a	safe	place. 
						

							43
3. Convenient Features
7.	 Type	in	the	same	combination	of		buttons	and	press	the	ENTER	button.
 The confirmation screen will be displayed.
8.	 Select	[YES]	and	press	the	ENTER	button.
	 The	SECURITY	function	has	been	enabled.
To turn on the projector when [SECURITY] is enabled:
1.	 Press	the	POWER	button.
 The projector will be turned on and display a message to the effect that the projector is locked.
2.	 Press	the	MENU	button.
3.	 Type	in	the	correct	keyword	and	press	the	ENTER	button. 	The	projector	will	display	an	image.
NOTE: The security disable mode is maintained until the main power is tu\
rned off or unplugging the power cord. 
						

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3. Convenient Features
To disable the SECURITY function:
1.	 Press	the	MENU	button.
 The menu will be displayed.
2.		Select	[SETUP]	→	[INSTALLATION(2)]	→	[SECURITY]	and	press	the	ENTER	button.
  The OFF/ON menu will be displayed.
3.	 Select	[OFF]	and	press	the	ENTER	button.
	 The	SECURITY	KEYWORD	screen	will	be	displayed.
4.	 Type	in	your	keyword	and	press	the	ENTER	button.
	 When	the	correct	keyword	is	entered,	the	SECURITY	function	will	be	disabled.
NOTE:	 If	you	 forget	 your	keyword,	 contact	your	dealer.	 Your	dealer	 will	provide	 you	with	 your	 keyword	 in	exchange	 for	your	 request	
code.	 Your	request	 code	is	displayed	 in	the	 Keyword	 Confirmation	 screen.	In	this	 example	 [NB52-YGK8-2VD6-K585-JNE6-EYA8]	
is a request code. 
						

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3. Convenient Features
 Storing Changes for Lens Shift, Zoom, and Focus [LENS 
MEMORY]
The	 adjusted	 values	can	be	stored	 in	projector	 memory	when	using	the	LENS	 SHIFT,	 ZOOM	and	FOCUS	 buttons	of	
the	projector	 or	the	 remote	 control.	Adjusted	 values	can	be	applied	 to	the	 signal	 you	selected. 	This	 will	eliminate	 the	
need	to	adjust	 lens	shift,	 focus,	 and	zoom	 at	the	 time	 of	source	 selection. 	There	 are	two	 ways	 to	save	 adjusted	 values	
for	lens	shift,	zoom,	and	focus.
Function	nameDescription page
REF.	LENS	MEMORYAdjusted	values	common	to	all	the	input	signals.If	no	adjusted	values	are	stored	in	[LENS	MEMORY],	the	values	stored	in	[REF. 	LENS	MEMORY]	will	be	applied	for	lens	adjustment.
→	page	118
LENS	MEMORYAdjusted	values	for	each	input	signal.Use	the	adjusted	values	for	the	signal	with	a	different	aspect	ratio	or	resolution. 	The	adjusted	values	can	be	applied	at	the	time	of	source	selection. →
	page	109
NOTE:
•	 Do	
not	use	 the	LENS	 MEMORY	 function	to	store	 the	lens	 shift	 position	 data	when	 using	 the	NP16FL	 lens.	Doing	 so	may	 cause	 a	
shadow on the screen.
	 Zoom	position	data	cannot	be	stored	because	the	NP16FL	lens	does	not	have	a	zoom	function.
•	 For	the	Lens	 Memory	 function	to	produce	 an	aligned	 image	as	accurately	 as	possible,	 be	sure	 to	perform	 [CALIBRATION]	 after	
replacement of the lens.
Usage Example
When	you	wish	 to	display	 on	a	screen	 having	a	4:3	 aspect	 ratio	an	NTSC	 or	other	 4:3	aspect	 ratio	signal	 and	an	
SXGA	or	other	5:4	aspect	ratio	signal:
Perform	 shift,	focus,	 and	zoom	 adjustments	 to	set	 the	 vertical	 screen	size	of	the	 vertically	 tall	5:4	 aspect	 ratio	signal	
to	standard.
Both	4:3	aspect	ratio	signals	and	5:4	aspect	ratio	signals	can	now	be	displayed.
Note	 that	with	 these	 shift,	focus,	 and	zoom	 adjustments,	 the	4:3	aspect	 ratio	signal	 will	become	 smaller	on	the	
screen.
To	eliminate	 this	size	 reduction,	 adjust	the	shift,	 focus	 and	zoom	 to	the	 optimum	 condition	 for	each	 of	the	 4:3	aspect	
ratio	signal	and	the	5:4	aspect	ratio	signal.
Memory	(storage)	of	each	of	these	values	will	permit	projection	at	an	optimum	condition	upon	signal	switching.
To store your adjusted values in [REF. LENS MEMORY]:
1.	 Press	the	MENU	button.
 The menu will be displayed. 
2.	 Press	the	▶	button	to	select	[SETUP]	and	press	the	ENTER	button.
3.	 Press	the	▶	button	to	select	[INSTALLATION	(1)]. 
						

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3. Convenient Features
4.	 Press	the	▼	button	to	select	[REF.	LENS	MEMORY]	and	press	the	ENTER	button.
 The [REF. LENS MEMORY] screen will be displayed.
5.	 Select	[STORE]	and	press	the	ENTER	button.
 The confirmation screen will be displayed.
6.	 Press	the	◀	button	to	select	and	[YES]	and	press	the	ENTER	button.
 The adjusted values for lens shift, zoom, and focus have been stored in [REF. LENS MEMORY].
7.	 Press	the	MENU	button.
 The menu will be closed.
TIP:
•	 To	store	adjusted	values	for	each	input	source,	use	the	Lens	Memory	function.
To call up your adjusted values from [REF. LENS MEMORY]:
1.	 Press	the	MENU	button.