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46 Troubleshooting
Picture
Symptom Cause and Remedy
No picture. • Cable is disconnected or the connections are wrong.
c Check that the proper connections have been made
(see page 20).
• The connections are wrong.
c This projector is compatible with a DDC2B (Digital Data
Channel 2B). If your computer is compatible with a DDC, turn
the projector on according to the following procedures.
1 Connect the projector to the computer.
2 Turn the projector on.
3 Start the computer.
• Input selection is incorrect.
c Select the input source correctly using the INPUT key
(see page 23).
• The picture is muted.
c Press the PIC MUTING key to release the picture muting (see
page 16).
• A black screen is displayed (VPL-CX75 only).
c Press the B key on the presentation tool to release the black
screen (see page 18).
The picture is noisy. • Noise may appear on the background depending on the
combination of the numbers of dot input from the connector and
numbers of pixel on the LCD panel.
c Change the desktop pattern on the connected computer.
The picture from INPUT A
connector is colored
strange.
• Setting of “Input-A Signal Sel.” in the SET SETTING menu is
incorrect.
c Select “Computer,” “Video GBR” or “Component” correctly
according to the input signal (see page 35).
“Please check Input-A
Signal Sel.” appears in
spite of inputting the
correct signal from INPUT
A.
• Setting of “Input-A Signal Sel.” in the SET SETTING menu is
incorrect.
c Select “Computer,” “Video GBR” or “Component” correctly
according to the input signal (see page 35).
On-screen display does not
appear.
• “Status” in the MENU SETTING menu has been set to “Off.”
c Set “Status” in the MENU SETTING menu to “On” (see page
38).
Color balance is incorrect. • Picture has not been adjusted properly.
c Adjust the picture (see page 32).
• Projector is set to wrong color system.
c Set “Color System” in the SET SETTING menu to match the
color system being input (see page 35).
The picture is too dark. • Contrast or brightness has not been adjusted properly.
c Adjust the contrast or brightness in the “Adjust Picture...” menu
properly (see page 32).
• The lamp has burnt or dims.
c Replace the lamp with a new one (see page 42).