Before Calling For Service - Panasonic PT-L780U Operating Instructions Manual

Before calling for service

Before calling for service, check the following points.
Problem
Power does not turn B The power cord may not be connected.
on. B The MAIN POWER switch is turned off.
B The main power supply is not being supplied to the wall
B TEMP indicator is illuminated or flashing. (Refer to page
B LAMP indicator is illuminated or flashing. (Refer to page
No picture appears. B The lamp unit cover has not been securely installed.
B The video signal input source may not be connected
B The input selection setting may not be correct. (Refer to
B The BRIGHT adjustment setting may be at the minimum
B The shutter function may be in use. (Refer to page 44.)
The picture is fuzzy. B The lens cover may still be attached to the lens.
B The lens focus may not have been set correctly. (Refer
B The projector may not be at the correct distance from the
B The lens may be dirty.
B The projector may be tilted too much. (Refer to page 26.)
COLOR is too light or B COLOR or TINT adjustment may be incorrect. (Refer to
TINT is poor.
B The input source which is connected to the projector
No sound can be B The audio signal source may not be connected properly.
heard. B The volume adjustment may be at the lowest possible
B A cable may be connected to the AUDIO OUT jack.
B The MUTE function may be active (page 43.)
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Possible cause
outlet.
58.)
59.)
properly.
page 28.)
possible setting. (Refer to page 37.)
to pages 29 and 48.)
screen. (Refer to pages 27 and 50.)
page 37.)
may not be adjusted correctly.
setting. (Refer to pages 15 and 43.)
Problem
The remote control
B The b
unit does not operate. B The b
page
B The r
be ob
B The r
range
B Press
unit o
powe
will tu
B The C
The buttons on the
page
projector do not
In ord
function.
the re
butto
more
B Press
unit o
powe
will tu
B The s
The picture does not
(Refe
display correctly.
B There
signa
B A sig
be be
B If you
the p
happ
B The c
Picture from
B The e
computer does not
not b
appear.
(You
by pr
simul
the ty
provi
B If an
the v
B RGB
when
conn