NEC Lt280 Portable Projector Users Manual

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8. Appendix
Mechanical
Installation Orientation: Desktop/Front, Desktop/Rear, Ceiling/Front, Ceiling/Rear
Dimensions 11.6 (W) 
 4.7 (H) 
 11.3 (D)
294 mm (W) 
 120 mm (H) 
 288 mm (D)
(not including protrusions)
Weight 7.7 lbs / 3.5 kg
Environmental Considerations
Operational Temperatures  :
41° to 104°F / 5° to 40°C,
(Eco mode selected automatically at 95° to 104°F/35° to 40°C, opera-
tional temperatures during use of wireless LAN card: 41° to 95° F / 5° to
35°C ), 20% to 80% humidity (non-condensing)
Storage Temperatures  :
14° to 122°F (-10° to 50°C), 20% to 80% humidity
(non-condensing)
Regulations UL/C-UL Approved (UL 60950-1, CSA 60950-1)
Meets DOC Canada Class B requirements
Meets FCC Class B requirements
Meets AS/NZS CISPR.22 Class B
Meets EMC Directive (EN55022, EN55024, EN61000-3-2, EN61000-3-
3)
Meets Low Voltage Directive (EN60950-1, TÜV GS Approved)
For additional information visit:
US : http://www.necvisualsystems.com
Europe : http://www.neceurope.com/
Global : http://www.nec-pj.com/
The specifications are subject to change without notice. 
						

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PC CARDCOMPONENT IN
USB LAN
AUDIO INCOMPUTER 3 IN
COMPUTER 1 IN COMPUTER 2 IN
PC CONTROLMONITOR OUT
AUDIO OUT S-VIDEO IN VIDEO INAUDIO INCb/Pb
L/MONO R YCr/Pr
PC CARDLAMPSTATUSPOWERON/STAND BY
SOURCE AUTO ADJUST
3D REFORM
SELECT
AC IN
294 (11.57)
71.5 (2.82)
120 (4.72)
64.5 (2.54)
288 (11.34)127.2 (5.0)
8. Appendix
 Cabinet Dimensions
LT380
Lens centerLens center
Unit: mm (inch) 
						

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LT280
8. Appendix
PC CARDCOMPONENT IN
USB LAN
AUDIO INCOMPUTER 1 IN COMPUTER 2 IN
PC CONTROLMONITOR OUT
AUDIO OUT S-VIDEO IN VIDEO INAUDIOCb/Pb
L/MONO R YCr/Pr
AC IN
PC CARDLAMPSTATUSPOWERON/STAND BY
SOURCE AUTO ADJUST
3D REFORM
SELECT
294 (11.57)
71.5 (2.82)
120 (4.72)
64.5 (2.54)
288 (11.34)127.2 (5.0)
Lens center
Lens center
Unit: mm (inch) 
						

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Mini D-Sub 15 Pin Connector
 Pin Assignments of D-Sub COMPUTER 1/2 Input Connector
Signal Level
Video signal : 0.7Vp-p (Analog)
Sync signal : TTL level
* COMPUTER 1 IN connector only51423
10
11 12 13 14 156 978
8. Appendix
Pin No. RGB Signal (Analog) YCbCr Signal
1Red Cr
2Green or Sync on Green Y
3Blue Cb
4Ground
5Ground
6Red Ground Cr Ground
7Green Ground Y Ground
8Blue Ground Cb Ground
9No Connection
10 Sync Signal Ground
11 SCART Sync
12 Bi-directional DATA (SDA)*
13 Horizontal Sync or Composite Sync
14 Vertical Sync
15 Data Clock* 
						

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8. Appendix
 Compatible Input Signal List
Signal Resolution Frequency H. Refresh Rate
( Dots ) ( kHz ) ( Hz )
#: Signals in above flagged with # are compressed with Advanced AccuBlend.
D: Images above flagged with D are supported by digital signal.
NOTE: Some composite sync signals may not be displayed correctly.
Signals other than those specified in the table above may not be displayed correctly. If this should happen, change the refresh rate
or resolution on your PC. Refer to Display Properties help section of your PC for procedures.
UXGA (1600 
 1200) is supported for separate sync signal only.
NTSC – 15.73 60.00
PAL–15.63 50.00
PAL60 – 15.73 60.00
SECAM – 15.63 50.00
DVESA 640
480 31.47 59.94
DIBM 640
480 31.48 59.95
DMAC640
480 35.00 66.67
DVESA 640
480 37.86 72.81
DVESA 640
480 37.50 75.00
DIBM 640
480 39.38 75.00
DVESA 640
480 43.27 85.01
DVESA 800
600 35.16 56.25
DVESA 800
600 37.88 60.32
DVESA 800
600 48.08 72.19
DVESA 800
600 46.88 75.00
DVESA 800
600 53.67 85.06
DMAC832
624 49.72 74.55
DVESA 1024
768 48.36 60.00
DVESA 1024
768 56.48 70.07
DMAC1024
768 60.24 74.93
DVESA 1024
768 60.02 75.03
DVESA 1024
768 68.68 85.00
#DVESA 1152
864 67.50 75.00
#DSUN 1152
900 61.80 65.95
#DVESA 1280
960 60.00 60.00
#DVESA 1280
1024 63.98 60.02
#MAC1280
1024 69.87 65.18
#SXGA+ 1400
1050 – 60.00
#VESA 1600
1200 75.00 60.00
#VESA 1600
1200 81.25 65.00
#VESA 1600
1200 87.50 70.00
#VESA 1600
1200 93.75 75.00
#DHDTV (1080i)(1125i)1920
1080 33.75 60.00 Interlace
#DHDTV (1080i)(1125i)1920
1080 28.13 50.00 Interlace
#DHDTV (720p)(750p)1280
720 45.00 60.00 Progressive
#DHDTV (720p)1280
720 37.50 50.00 Progressive
DSDTV(576p)(625p)–31.25 50.00 Progressive
DSDTV (480p)(525p)–31.47 59.94 Progressive
DVD YCbCr – 15.73 59.94  Interlaced
DVD YCbCr – 15.63 50.00  Interlaced 
						

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8. Appendix
Cable Connection
Communication Protocol
Baud rate ........................................ 38400 bps
Data length ..................................... 8 bits
Parity .............................................. No parity
Stop bit .......................................... One bit
X on/off .......................................... None
Communications procedure ........... Full duplex
NOTE: Depending on the equipment, a lower baud rate may be recommended for long cable runs.
 PC Control Codes and Cable Connection
PC Control Codes
Function Code Data
POWER ON 02H 00H 00H 00H 00H 02H
POWER OFF 02H 01H 00H 00H 00H 03H
INPUT SELECT COMPUTER 1 02H 03H 00H 00H 02H 01H 01H 09H
INPUT SELECT COMPUTER 2 02H 03H 00H 00H 02H 01H 02H 0AH
INPUT SELECT COMPUTER 3 02H 03H 00H 00H 02H 01H 1AH 22H
INPUT SELECT COMPONENT 02H 03H 00H 00H 02H 01H 10H 18H
INPUT SELECT VIDEO 02H 03H 00H 00H 02H 01H 06H 0EH
INPUT SELECT S-VIDEO 02H 03H 00H 00H 02H 01H 0BH 13H
INPUT SELECT VIEWER 02H 03H 00H 00H 02H 01H 1FH 27H
PICTURE MUTE ON 02H 10H 00H 00H 00H 12H
PICTURE MUTE OFF 02H 11H 00H 00H 00H 13H
SOUND MUTE ON 02H 12H 00H 00H 00H 14H
SOUND MUTE OFF 02H 13H 00H 00H 00H 15H
ON SCREEN MUTE ON 02H 14H 00H 00H 00H 16H
ON SCREEN MUTE OFF 02H 15H 00H 00H 00H 17H
ASPECT RATIO (4:3 Screen)
4:3 03H 10H 00H 00H 05H 18H 00H 00H 00H 00H 30H
Letterbox 03H 10H 00H 00H 05H 18H 00H 00H 01H 00H 31H
Widescreen 03H 10H 00H 00H 05H 18H 00H 00H 02H 00H 32H
Crop 03H 10H 00H 00H 05H 18H 00H 00H 03H 00H 33H
ASPECT RATIO (16:9 Screen)
4:3 Window 03H 10H 00H 00H 05H 18H 00H 00H 00H 00H 30H
Letterbox 03H 10H 00H 00H 05H 18H 00H 00H 01H 00H 31H
Widescreen 03H 10H 00H 00H 05H 18H 00H 00H 02H 00H 32H
4:3 Fill 03H 10H 00H 00H 05H 18H 00H 00H 04H 00H 34H
AUTO ADJUST 02H 0FH 00H 00H 02H 05H 00H 18H
NOTE: Contact your local dealer for a full list of PC Control Codes if needed. 
						

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8. Appendix
 Using Software Keyboard
1 to 0 and Characters
.............................. Use to type in password or keyword.
MODE .................... Selects one of three modes for alphabet and special characters.
SP ......................... Inserts a space
BS ......................... Deletes one character backward
.......................... Returns to the previous
.......................... Advances to the next
OK ......................... Executes the selection
Cancel ................... Cancels the selection
NOTE: You can drag the Software keyboard on the screen by clicking and holding any part on the keyboard except buttons.
NOTE 1: Pins 1, 4, 6 and 9 are no used.
NOTE 2: Jumper “Request to Send” and “Clear to Send” together on both ends of the cable to simplify cable connection.
NOTE 3: For long cable runs it is recommended to set communication speed within projector menus to 9600 bps.
15243
67 98
To GND of PC To RxD of PC To TxD of PC
To  RTS of PC
To CTS of PC
PC Control Connector (D-SUB 9P) 
						

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No image is displayed from your PC or video equipment to the
projector.
Still no image even though you connect the projector to the PC
first, then start the PC.
Enabling your notebook PC’s signal output to the projector.
•A combination of function keys will enable/disable the ex-
ternal display. Usually, the combination of the “Fn” key along
with one of the 12 function keys turns the external display
on or off.
No image (blue background, logo, no display).
Still no image even though you press the AUTO ADJUST but-
ton.
Still no image even though you carry out [Reset] in the
projector’s menu.
Signal cables plug is fully inserted into the input connector
A message appears on the screen.
( _____________________________________________ )
The source connected to the projector is active and available.
Still no image even though you adjust the brightness and/or
the contrast.
Input sources resolution and frequency are supported by the
projector.
 Troubleshooting Check List
Before contacting your dealer or service personnel, check the following list to be sure repairs are needed also by
referring to the “Troubleshooting” section in your user’s manual. This checklist below will help us solve your problem
more efficiently.
* Print the following pages.
Frequency of occurrence   always    sometimes (How often?_____________________)     other (__________________)
Power
No power (POWER indicator does not light green)   See also “Sta-
tus Indicator (STATUS)”.
Power cables plug is fully inserted into the wall outlet.
Main power switch is pressed to the ON position.
Lamp cover is installed correctly .
Lamp Hours Used (lamp operation hours) was cleared after
lamp replacement.
No power even though you press and hold the POWER button
for a minimum of 2 seconds.Shut down during operation.
Power cables plug is fully inserted into the wall outlet.
Lamp cover is installed correctly .
Power Management is turned off (only models with the Power
Management function).
Off Timer is turned off (only models with the Off Timer func-
tion ).
Video and Audio
Image is too dark.
Remains unchanged even though you adjust the brightness
and/or the contrast.
Image is distorted.
Image appears to be trapezoidal (unchanged even though you
carry out the [Keystone] or [3D Reform] adjustment).
Parts of the image are lost.
Still unchanged even though you press the AUTO ADJUST but-
ton.
Still unchanged even though you carry out [Reset] in the
projector’s menu.
Image is shifted in the vertical or horizontal direction.
Horizontal and vertical positions are correctly adjusted on a
computer signal.
Input sources resolution and frequency are supported by the
projector.
Some pixels are lost.
Image is flickering.
Still unchanged even though you press the AUTO ADJUST but-
ton.
Still unchanged even though you carry out [Reset] in the
projector’s menu.
Image shows flickering or color drift on a computer signal.
Image appears blurry or out of focus.
Still unchanged even though you checked the signal’s resolu-
tion on PC and changed it to projector’s native resolution.
Still unchanged even though you adjusted the focus.
No sound.
Audio cable is correctly connected to the audio input of the
projector.
Still unchanged even though you adjusted the volume level.
AUDIO OUT is connected to your audio equipment (only mod-
els with the AUDIO OUT connector).
Other
Remote control does not work.
No obstacles between the sensor of the projector and the re-
mote control.
Projector is placed near a fluorescent light that can disturb the
infrared remote controls.
Batteries are new and are not reversed in installation.
If present on the remote control, projector selector switch is
not used.Buttons on the projector cabinet do not work ( only models with
the Control Panel Lock function).
Control Panel Lock is not turned on or is disabled in the menu.
Still unchanged even though you press and hold the EXIT but-
ton for a minimum of 10 seconds.
8. Appendix 
						

							119
In the space below please describe your problem in detail.
Information on application and environment where your projector is used
Projector
Model number:
Serial No.:
Date of purchase:
Lamp operating time (hours):
Lamp Mode: Normal   Eco
Information on input signal:
Horizontal synch frequency [          ] kHz
Vertical synch frequency [          ] Hz
Synch polarity H  (+)   (–)
V  (+)   (–)
Synch type Separate   Composite
 Sync on Green
STATUS Indicator:
Steady light Orange   Green
Flashing light [          ] cycles
Remote control model number:
Signal cable
NEC standard or other manufacturer’s cable?
Model number:                        Length:              inch/m
Distribution amplifier
Model number:
Switcher
Model number:
Adapter
Model number:
ProjectorPC
DVD player
Installation environment
Screen size: inch
Screen type: White matte    Beads   Polarization
 Wide angle    High contrast
 Throw distance: feet/inch/m
 Orientation: Ceiling mount    Desktop
Power outlet connection:
Connected directly to wall outlet
Connected to power cord extender or other (the num-
ber of connected equipment______________)
Connected to a power cord reel or other (the number
of connected equipment______________)
Computer
Manufacturer:
Model number:
Notebook PC  / Desktop 
Native resolution:
Refresh rate:
Video adapter:
Other:
Video equipment
VCR, DVD player, Video camera, Video game or other
Manufacturer:
Model number:
8. Appendix 
						

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8. Appendix

 TravelCare Guide
TravelCare - a service for international travelers
This product is eligible for TravelCare, NECs unique international war-
ranty.
Please note that TravelCare coverage differs in part from coverage un-
der the warranty included with the product.
Services offered with TravelCare
This warranty allows customers to receive service on their product at
the NEC and NEC-designated service stations in the countries listed
herein when temporarily traveling internationally for business or plea-
sure.
For details on services offered by the different service stations, please
refer to the List of TravelCare Outlets below.
1 Repair services
The product will be repaired and delivered within 10 business days,
not including shipping time.
During the term of warranty, the cost of maintenance parts, labor
costs for repairs and shipping costs within the service stations cov-
erage area are covered by the warranty.
2 Replacement product rental service
If the customer desires, he or she can rent a replacement product
while the original product is being repaired.
Fee: US$200 for 12 days
This fee must be paid at the local service station in cash or credit
card.
The US$200 rental fee is non-refundable even if the customer rents it
less than 12 days before returning.
The replacement product will be delivered within 3 business days.
If the customer did not return the replacement product within 12 days,
the customer will be charged the price of the unit.
If the customer returned the replacement product in a faulty or dam-
aged condition, the repair cost will be charged to the customer.
Note that this service is not offered in all countries and regions. Please
refer to the List of TravelCare Outlets.
In addition, this replacement product rental service is not offered af-
ter the products warranty has expired.
Term of warranty
1
a. Upon presentation of the warranty or receipt received upon pur-
chase:
Valid for the term indicated on the warranty or the normal term of
warranty for the country of purchase.
b.When only the product is brought in:
Valid for a period of within 14 months of the date of manufacture
indicated by the serial number attached to the product.
2When a product whose term of warranty is expired is brought in:
Repairs will be offered for a fee. In this case the customer is not
eligible for the replacement product rental service.
3In the following cases, repairs may be charged, even if the products
warranty is still in effect:
1) If the term of warranty, model name, serial number and name of
the store of purchase are not indicated on the warranty or have
been altered.
2) Problems or damage caused by dropping or shocks during ship-
ment or movement by the customer or by improper handling by
the customers.
3) Problems or damage caused by improper usage or unwarrant-
able alterations or repairs by the customer.
4) Problems or damage caused by fire, salt damage, gas damage,
earthquakes, lightning damage, storm or flood damage or other
natural disasters or such external factors as dust, cigarette
smoke, abnormal voltage, etc.5) Problems or damage caused by use in hot or humid places, in
vehicles, boats or ships, etc.
6) Problems or damage caused by expendable supplies or devices
connected to the product other than those designated by NEC.
7) Problems caused by natural consumption, wear or deterioration
of parts under normal usage conditions.
8) Problems or damage to lamps and other expendable supplies,
included parts or optional parts.
9)Other conditions stipulated in the warranty included with the prod-
uct also apply.
NOTE: The product can be used overseas with voltages of 100 to 120V and 200
to 240V by using a power cable suited for the standards and power source volt-
age of the country in which the product is being used.
List of TravelCare Outlets
This list applies as of October 1, 2005.
For the most up-to-date information, please refer to the websites of the
service stations in the various countries on the List of TravelCare Out-
lets or to the NEC website at http://www.nec-pj.com.
In Europe
NEC Europe, Ltd. / European Technical Centre
Address: Unit G, Stafford Park 12, Telford TF3 3BJ, U.K.
Telephone: +44 1952 237000
Fax Line: +44 1952 237006
Email Address: [email protected]
WEB Address:http://www.neceur.com
(Regions Covered)
EU:Austria*, Belgium*, Denmark*, Finland*, France*, Germany*,
Greece*, Ireland*, Italy*, Luxembourg*, The Netherlands*,
Portugal*, Spain*, Sweden* and the United Kingdom*
EEA: Norway*, Iceland and Liechtenstein
In North America
NEC Solutions (America), Inc.
Address: 1250 N. Arlington Heights Road,
Itasca, Illinois 60143, U.S.A.
Telephone: +1 800 836 0655
Fax Line: +1 800 356 2415
Email Address: vsd.tech-suppor [email protected]
WEB Address:http://www.necvisualsystems.com
(Regions Covered)
U.S.A. *, Canada*
In Oceania
NEC Australia Pty., Ltd.
Address: New South Wales;
184 Milperra Road, Reversby 2212
Victoria;
Unit 1/6 Garden Road, Clayton 3168
South Australia;
84A Richmond Road, Keswick 5035
Queensland;
Unit 4/305 Montague Road West End 4101
Western Australia;
45 Sarich Court Osborne Park 6017
Telephone: 131 632 (from domestic)
+61 8 8375 5706 (from overseas)
Fax Line: +61 8 8375 5757
Email Address: [email protected]
WEB Address:http://www.nec.com.au
(Regions Covered)
Australia*, New Zealand