Before Calling For Service - Panasonic PT-L750U R Operating Instructions Manual

Before calling for service

Before calling for service, check the following points.
Problem
Power does not turn
on.
No picture appears.
The picture is fuzzy.
COLOR is too light or
TINT is poor.
No sound can be
heard.
68
B The power cord may not be connected.
B The MAIN POWER switch is turned off.
B The main power supply is not being supplied to the wall
outlet.
B TEMP indicator is illuminated or flashing. (Refer to page
60.)
B LAMP indicator is illuminated or flashing. (Refer to page
61.)
B The lamp unit cover has not been securely installed.
B The video signal input source may not be connected
properly.
B The input selection setting may not be correct. (Refer to
page 30.)
B The BRIGHT adjustment setting may be at the minimum
possible setting. (Refer to page 39.)
B The shutter function may be in use. (Refer to page 46.)
B The lens cover may still be attached to the lens.
B The lens focus may not have been set correctly. (Refer
to pages 31 and 50.)
B The projector may not be at the correct distance from the
screen. (Refer to pages
B The lens may be dirty.
B The projector may be tilted too much. (Refer to page 28.)
B COLOR or TINT adjustment may be incorrect. (Refer to
page 39.)
B The input source which is connected to the projector
may not be adjusted correctly.
B The audio signal source may not be connected properly.
B The volume adjustment may be at the lowest possible
setting. (Refer to pages
B A cable may be connected to the AUDIO OUT jack.
B The MUTE function may be active (page 45.)
Possible cause
29 and 52.)
17 and 45.)