NEC Vt800 Projector User Manual

119
7. Maintenance
7.  Connect the supplied power cable, turn on the Main Power switch and turn on the projector.
8.   Finally, select the menu 
→ [R ESET] → [C LEAR  L AMP  H OURS] to reset the lamp life remaining and lamp 
usage hours.
NOTE: When you continue to use the projector for another 600 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 seco\
nds to reset the...

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8. Appendix
 Troubleshooting
This section helps you resolve problems you may encounter while setting \
up or using the projector.
Indicator Messages
Power Indicator
Ind  cator Cond  t  on p rojector Cond  t  onNote
OffThe main power is off.–
Blinking light
Green
0.5 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 (Off Time) is activated.–
Orange
0.5 sec On,0.5 sec OffThe projector is cooling down.Wait for a...

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8. Appendix
Common Problems & Solutions (→ “Power/Status/Lamp Indicator” on page 120)
problemCheck These Items
Does not turn on •   Check that the power cable is plugged in and that the power button on the projector cabinet or the remote control is on. (→ page 19, 20)
•
 
Ensure that the lamp cover is installed correctly. (→ page 119)
•
 
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...

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8. Appendix
If there   s no p  cture, or the p  cture   s not d  splayed 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...

1
8. Appendix
 Specifications
This section provides technical information about the projector’s per\
formance.
Model Number    VT800
Opt  cal
LCD Panel0.63 inch LCD with Micro Lens Array (Aspect Ratio 4:3)
Resolution1024 x 768 pixels* up to UXGA with scaling technology (up to 1400 x 105\
0 @ 60 Hz on HDMI)
Lens
Manual zoom and focus:
Zoom Ratio= 1-1.2F1.70 - 2.07  f= 18.9 - 22.7 mm
Lamp210W AC (172W in ECO Mode)
Light Output2700 lumens (approx. 80% in ECO Mode)
Contrast Ratio(full white:...

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8. Appendix
m
echan

cal
InstallationOrientation: Desktop/Front, Desktop/Rear, Ceiling/Front, Ceiling/Rear
Dimensions12.2"(W) x 4.9"(H) x 11.4"(D) (not including protrusions)
310 mm (W) x 125 mm (H) x 289 mm (D) (not including protrusions)\
Weight8.2 lbs/3.7 kg
EnvironmentalConsiderations
Operational Temperatures :41° to 104°F / 5° to 40°C,(Eco mode selected automatically at 95° to 104°F/35° to 40°\
C), 20% to80% humidity (non-condensing)
Storage Temperatures :14° to 122°F...

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8. Appendix
 Cabinet Dimensions
WIRELESS
WIRELESS
USBLAMPSTATUSSOURCEAUTO ADJUST3D REFORM
SELECT
VIDEO INAUDIO IN
USBLANAUDIO INHDMI INAUDIO INCOMPUTER /COMPONENT 2 INCOMPUTER /COMPONENT 1 IN
PC CONTROLMONITOR OUTAUDIO OUT
S-VIDEO INAUDIO IN
L/MONO
L/MONO
R
R
AC IN
289 (11.4)
125 (4.9)
310 (12.2)
71.4 (2.8)
72.3 (2.8)
133 (5.2)
Unit: mm (inch) 

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 Screen Size and Projection Distance
Throw Distance and Screen Size
The  following  shows  the  proper  relative  positions  of  the  projector  and  screen.  Refer  to  the  table  to  determine  the 
position of installation.
8. Appendix
D
B
CProjector bottom
2.85"/72.3 mm
l ens center s creen bottoms creen center
D
 stance Chart
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and screen bottom (top of scr\...

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This section should be used when considering the distance to the screen \
and the screen size.
Available projection distances are 0.73 m/29 inches for 21" screen to 10.8 m/424 inches for 300" screen, according 
to the chart.
Us  ng the Chart
Example for 100" screen:
The projection distance is approximately 3.0 m (120") according to the\
 upper chart.
The lower chart shows that the vertical distance between the projector foot and the screen top is approximately 1.35 
m...

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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 level111512141365 43 211079 8
8. Appendix
  p n No.    RG b  S  gnal (Analog)   YCbCr S  gnal
 
1   Red    
Cr
  2   Green or Sync on Green   
Y
  3   Blue    
Cb
  4   Ground
  5   Ground
  6   Red Ground   
Cr Ground
  7   Green Ground   
Y Ground
  8   Blue Ground   
Cb Ground
  9   No Connection
  10   Sync Signal Ground
  11   No...