Bedienungsanleitung Nec vt800 (Seite 133 von 150) (Englisch)

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8. Appendix

Common Problems & Solutions (→ “Power/Status/Lamp Indicator” on page 120)

Problem Check 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 insufﬁ cient ventilation around the projector or if the

room where you are presenting is particularly warm, move the projector to a cooler location.

• Check to see if you continue to use the projector for another 600 hours after the lamp has reached the end

of its life. If so, replace the lamp.

After replacing the lamp, reset the lamp hours used. (→ page 113)

• The lamp may fail to light. Wait a full minute and then turn on the power again.

• Set [FAN MODE] to [HIGH ALTITUDE] when using the projector at altitudes approximately 5500 feet/1600

meters or higher. Using the projector at altitudes approximately 5500 feet/1600 meters or higher without

setting to [HIGH ALTITUDE] can cause the projector to overheat and the projector could shut down. If this

happens, wait a couple minutes and turn on the projector. (→ page 108)

Also when the lamp is turned off, the projector internal temperature is hot. If the power is turned on before

the projector has cooled down, the fan will run a short time before the lamp will turn on.

Will turn off •

Ensure that the [OFF TIMER], [PROGRAM TIMER] or [AUTO POWER OFF] is off

. (→ page

87, 108)

No picture • Use the SOURCE button on the projector cabinet or the VIDEO, the S-VIDEO, the COMPUTER1, the COM-

PUTER2, the HDMI, the VIEWER or the NETWORK button on the remote control to select your source. (→

page

22)

• Ensure your cables are connected properly.

• Use menus to adjust the brightness and contrast. (→ page 77)

• Check to see if the image is muted. (→ page 31)

• Remove the lens cap.

• Reset the settings or adjustments to factory preset levels using the Reset in the Menu. (→ page 113)

• Enter your registered keyword if the Security function is enabled. (→ page 41)

• Be sure to connect the projector and notebook PC while the projector is in standby mode and before turn-

ing 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.

* If the screen goes blank while using your remote control, it may be the result of the computer’s screen-

saver or power management software.

• See also the next page.

Color tone or hue is

unusual

•

Check if an appropriate color is selected in [WALL COLOR]. If not, select an appropriate option. (→ page 86)

• Adjust [HUE] in [ADJUST]. (→ page 77)

Image isn’t square to

the screen

• Reposition the projector to improve its angle to the screen. (→ page

23)

• Use the 3D Reform function to correct the trapezoid distortion. (→ page

26)

Picture is blurred • Adjust the focus. (→ page 24)

• Reposition the projector to improve its angle to the screen. (→ page 23)

• Ensure that the distance between the projector and screen is within the adjustment range of the lens. (→

page 126)

• Condensation may form on the lens if the projector is cold, brought into a warm place and is then turned

on. Should this happen, let the projector stand until there is no condensation on the lens.

Flicker appears on

screen

• Set [FAN MODE] to other than [HIGH ALTITUDE] mode when using the projector at altitudes approximately

5500 feet/1600 meters or lower. Using the projector at altitudes less than approximately 5500 feet/1600

meters and setting to [HIGH ALTITUDE] can cause the lamp to overcool, causing the image to flicker.

Switch [FAN MODE] to [AUTO]. (→ page

108)

Image is scrolling

vertically, horizontally or

both

• Use the SOURCE button on the projector cabinet or the VIDEO, the S-VIDEO, the COMPUTER1, the COM-

PUTER2, the HDMI, the VIEWER or the NETWORK button on the remote control to select your source (Video,

S-Video, Computer, Component, Viewer or NETWORK). (→ page

22)

•

Adjust the computer image manually with the [CLOCK]/[PHASE] in [ADJUST] → [IMAGE OPTIONS]. (→ page 78)

Remote control does

not work

• Install new batteries. (→ page 9)

• Make sure there are no obstacles between you and the projector.

• Stand within 22 feet (7 m) of the projector. (→ page 9)

• Check if one or more remote sensors are enabled. Select [SETUP] → [INSTALLATION(2)] → [REMOTE

SENSOR] from the menu. (→ page 106)

• Make sure that the remote control’s ID corresponds with the projector’s ID.

Indicator is lit or blink-

ing

• See the POWER/STATUS/LAMP Indicator. (→ page

120)

Vertical stripes in RGB

mode

• Press the AUTO ADJUST button on the projector cabinet or the AUTO ADJ. button on the remote control. (→

page

28)

•

Adjust the computer image manually with the [CLOCK]/[PHASE] in [ADJUST] → [IMAGE OPTIONS]. (→ page 78)

USB mouse does not

work

• Make sure that your USB mouse is properly connected to the projector. (→ page 33)

The projector may not support some brands of a USB mouse.

• Some menu items cannot be operated with a USB mouse.

For more information contact your dealer.

Nec vt800 Seite 133

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