Sony HDMI VPL-EX7, Quick Reference Manual

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15 GB
Troubleshooting
Troubleshooting
If the projector appears to be operating erratically, try to diagnose and correct the problem
using the following instructions. If the problem persists, consult with qualified Sony
personnel.
For details on the symptoms, see the Operating Instructions contained in the CD-ROM.
Power
Picture
Symptom Cause and Remedy
The power is not turned on. • The power has been turned off and on with the ? / 1 key at a short
interval.
c
Wait for about 90 seconds before turning on the power.
• The lamp cover is not secured.
c
Close the lamp cover securely.
• The air filter cover is detached.
c
Attach the air filter cover securely.
Symptom Cause and Remedy
No picture. • A cable is disconnected or the connections are wrong.
c
Check that the proper connections have been made.
• The connections are wrong.
c
This projector is compatible with DDC2B (Digital Data
Channel 2B). If your computer is compatible with 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.
• The picture is muted.
c
Press the PIC MUTING key to release the picture muting.
• The computer signal is not set to output to an external monitor or
set to output both to an external monitor and a LCD monitor of a
computer.
c
Set the computer signal to output only to an external monitor .
The picture is noisy. Noise may appear on the background depending on the combination
of the number of dots input from the computer and the numbers of
pixels on the LCD panel.
c
Change the desktop pattern on the connected computer.
The picture is not clear. • The picture is out of focus.
c
Adjust the focus.
• Condensation has accumulated on the lens.
c
Leave the projector for about two hours with the power on.
The image extends beyond
the screen. The APA key has been pressed even though there are black edges
around the image.
c
Display the full image on the screen and press the APA key.
c
Adjust “Shift” in the Input setting menu properly.