Sony VPL-CX21 Operating Instructions Manual page 36

Sound
Symptom
No sound.
Remote Commander
Symptom
The Remote Commander
does not work.
Others
Symptom
The control panel keys do
not function.
Indicators
Symptom
The LAMP/COVER
indicator flashes.
The LAMP/COVER
indicator lights up.
The TEMP/FAN indicator
flashes.
The TEMP/FAN indicator
lights up.
Both the LAMP/COVER
and TEMP/FAN indicators
light up.
36
Troubleshooting
Cause and Remedy
• A cable is disconnected or the connections are wrong.
c Check that the proper connections have been made (see page 9).
• The connecting cable used is incorrect.
c Use the A/V connecting adaptor (supplied) (see page 9).
• The sound is not adjusted properly.
c Adjust "Volume" on the Picture menu (see page 21).
Cause and Remedy
The Remote Commander battery is dead.
c Replace it with a new battery (see page 7).
Cause and Remedy
The control panel keys are locked.
c Unlock the control panel keys (see page 25).
Cause and Remedy
• The lamp cover or the air filter cover is detached.
c Attach the cover securely (see page 32 and 33).
• The electrical system may break down.
c Consult with qualified Sony personnel.
• The lamp has reached the end of its life.
c Replace the lamp (see page 31).
• The lamp has reached a high temperature.
c Wait for 45 seconds to cool the lamp and then turn on the power
again.
• If the LAMP/COVER indicator still lights even after you have
replaced the lamp, the electrical system may break down.
c Consult with qualified Sony personnel.
The fan is broken.
c Consult with qualified Sony personnel.
• The internal temperature is unusually high.
c Check to see that nothing is blocking the ventilation holes.
• The projector is being used at a high altitude.
c Ensure that "High Altitude Mode" on the Installation menu is
set to "On."
The electrical system has broken down.
c Consult with qualified Sony personnel.