NEC VT770 User Manual Page 109
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109
Replacing the Lamp and Filters
After your lamp has been operating for 2000 hours (up to 3000 hours in Eco mode) or longer, the LAMP indicator in the
cabinet will blink red and the message will appear. Even though the lamp may still be working, replace it at 2000 (up to
3000 hours in Eco mode) hours to maintain optimal projector performance.
CAUTION
• DO NOT TOUCH THE LAMP immediately after it has been used.
It will be extremely hot. Turn the projector off, wait 10 seconds, turn off the main power switch and then discon-
nect the power cable. Allow at least one hour for the lamp to cool before handling.
• DO NOT REMOVE ANY SCREWS except the lamp cover screw and two lamp case screws. You could receive
an electrical shock.
• The projector will turn off and go into stand-by mode after 2100 (up to 3100 hours in Eco mode) hours of
service. If this happens, be sure to replace the lamp. If you continue to use the lamp after 2000 hours (up to
3000 hours in Eco mode) of use, 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.
To replace the lamp:
1. Loosen the lamp cover screw until the screwdriver goes into a free-wheeling condition and remove the
lamp cover. The lamp cover screw is not removable.
8. Maintenance
2. Loosen the two screws securing the lamp housing until the screw-driver goes into a freewheeling
condition. The two screws are not removable.
Remove the lamp housing by pulling on the handle.
NOTE: There is an interlock on this case to prevent the risk of electrical shock. Do not attempt to circumvent this interlock.
S
TATUS
LAMP
OW
ER
A
D
J
U
S
T
COMPONENT
Y
Cb/Pb Cr/Pr
AUDIO
AUDIO
AUDIO
AUDIO
L/MONO
S-VIDEO
R 1
R 2
R
L/MONO
VIDEO
R
STATUS
LAMP
OW
ER
AD
JUST
COMPONENT
Y Cb/Pb Cr/Pr
AUDIO
AUDIO
AUDIO
AUDIO
L/MONO
S-VIDEO
ER 1
ER 2
R
L/MONOVIDEO R
1
2
Catch
S
T
A
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S
L
A
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P
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W
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R
A
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S
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P
O
N
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N
T
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b
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r/P
r
A
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IO
A
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D
IO
A
U
D
IO
A
U
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IO
L
/M
O
N
O
S
-V
ID
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R
1
R
2
R
L
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ID
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b
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A
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ID
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Interlock
- Portable Projector 1
- User’s Manual 1
- Important Information 2
- RF Interference 3
- Important Safeguards 3
- Installation 3
- Fire and Shock Precautions 4
- Lamp Replacement 5
- Table of Contents 6
- Introduction 8
- What's in the Box? 9
- 1. Introduction 10
- Carrying the Projector 13
- Te r minal Panel Features 15
- Remote control 19
- 7m/22 feet 19
- Installation and Connections 20
- Selecting a Location 21
- Distance Chart 22
- Reflecting the Image 22
- Making Connections 23
- COMPUTER 2 24
- RGB signal cable (supplied) 25
- COMPONENT 26
- S-Video cable (not supplied) 27
- Video cable (not supplied) 27
- VCR/ Laser disc player 27
- Audio equipment 27
- Audio cable (not supplied) 27
- To wall outlet 28
- Projecting an Image 29
- Turning on the Projector 30
- Selecting a Source 32
- Adjust the Tilt Foot 33
- Auto Keystone Correction 35
- Manual Keystone Correction 35
- Turning Up or Down Volume 37
- Turning off the Projector 38
- After Use 38
- Convenient Features 39
- Freezing a Picture 40
- Using the Pointer 41
- Enlarging and Moving a Pic 41
- Getting the On-line Help 42
- Using a USB Mouse 42
- 4. Convenient Features 43
- When using the USB Port 43
- Cornerstone 44
- (ChalkBoard) 47
- USB memory (Capture) 48
- Disabling the Security 53
- Using the Viewer 55
- 5. Using the Viewer 56
- Features 56
- Easy to use 56
- High quality images 56
- PC card (not supplied) 57
- Eject button 57
- Projecting slides (Viewer) 58
- Viewer Window Elements 59
- Setting Option for Viewer 60
- Viewing Digital Images 61
- Deleting Captured Images 62
- Changing Background Logo 64
- (English version only) 65
- END USER LICENSE AGREEMENT 66
- Introduction 67
- Operating Environment 68
- Software Installation 69
- Troubleshooting 72
- Using On-Screen Menu 73
- Submenu window 74
- Menu tree 75
- Menu Elements 77
- [Preset] 79
- Security 90
- [Remote Sensor] 98
- 7. Using On-Screen Menu 100
- Remaining Lamp Time Display 102
- Returning to Factory Default 103
- Entry List 104
- Entry Edit Command 105
- Maintenance 106
- Cleaning the Filters 107
- Cleaning the Cabinet 107
- Cleaning the Lens 108
- 8. Maintenance 109
- Replacing the Filters 111
- Appendix 112
- Troubleshooting 113
- 9. Appendix 114
- 15-pin connector 115
- Specifications 116
- Cabinet Dimensions 118
- 1112131415 119
- To GND of PC 121
- To RxD of PC 121
- To TxD of PC 121
- To RTS of PC 121
- To CTS of PC 121
- Using Software Keyboard 122
- TravelCare Guide 123
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