Panasonic PT-LC75E, PT-LC55E manual Before asking for service

Before asking for service

Before asking for service, check the following points.

Problem	Possible cause
Power does not	BThe power cord may not be connected.
turn on.	BThe MAIN POWER switch is turned off.
	BThe main power supply is not being supplied to the
	wall outlet.
	BTEMP indicator is illuminated or flashing. (Refer to
	page 42.)
	BLAMP indicator is illuminated or flashing. (Refer to
	page 42.)
	BThe lamp unit cover has not been securely
	installed.
No picture appears.	BThe video signal input source may not be
	connected properly.
	BThe input selection setting may not be correct.
	(Refer to page 24.)
	BThe BRIGHT adjustment setting may be at the
	minimum possible setting. (Refer to page 32.)
	BThe shutter function may be in use. (Refer to page
	38.)
The picture is	BThe lens cover may still be attached to the lens.
fuzzy.	BThe lens focus may not have been set correctly.
	(Refer to page 25.)
	BThe projector may not be at the correct distance
	from the screen. (Refer to pages 22 and 23.)
	BThe lens may be dirty.
	BThe projector may be tilted too much. (Refer to
	page 24.)
COLOR is too light or	BCOLOR or TINT adjustment may be incorrect.
TINT is poor	(Refer to page 32.)
	BThe input source which is connected to the
	projector may not be adjusted correctly.
No sound can be	BThe audio signal source may not be connected
heard.	properly.
	BThe volume adjustment may be at the lowest
	possible setting. (Refer to pages 15 and 26.)

Problem	Possible cause
Remote control unit	BThe battery may be weak.
does not operate.	BThe battery may not be inserted correctly. (Refer to
	page 18.)
	BThe remote control signal receptor on the projector
	may be obstructed. (Refer to page 18.)
	BThe remote control unit may be out of the
	operation range. (Refer to page 18.)
The picture does not	BThe correct input signal may not be selected.
display correctly.	(Refer to page 24.)
	BThe signal format (TV system) may not be set
	correctly. (Refer to page 33.)
	BThere may be a problem with the video tape or
	other signal source.
Picture from	BA signal which is not compatible with the projector
computer does not	may be being input. (Refer to page 52.)
appear	BThe cable may be too long.
	BThe external video output for the laptop computer
	may not be set correctly.
	(You may be able to change the external output
	settings by pressing the [Fn]+[F3] or [Fn]+[F10]
	keys simultaneously. The actual method varies
	depending on the type of computer, so refer to the
	documentation provided with your computer for
	further details.)
	BIf an RGB input monitor (refer to pages 14 and 17)
	is turned off, the video signals may not be output
	from the computer.
	BRGB2 SELECT in the OPTION2 menu is set to
	OUTPUT when the signals are input to RGB2 IN /
	RGB1 OUT connector. (Refer to page 36)

Others

48-ENGLISH ENGLISH-49