Panasonic PT-LB20U, PT-LB20VU, PT-LB20SU manual Before calling for service

Before calling for service

Before calling for service, check the following points.

Problem	Possible cause	Page
Power does not	BThe power cord may not be connected.	–
turn on.	BThe main power supply is not being supplied to the	–
	wall outlet.	52
	BTEMP indicator is illuminated or flashing.
	BLAMP indicator is illuminated or flashing.	53
	BThe lamp unit cover has not been securely	–
	installed.
No picture	BThe video signal input source may not be	–
appears.	connected properly.
	BThe input selection setting may not be correct.	25
	BThe “BRIGHT” adjustment setting may be at the	38
	minimum possible setting.
	BThe “SHUTTER” function may be in use.	29
The picture is	BThe lens cover may still be attached to the lens.	–
fuzzy.	BThe lens focus may not have been set correctly.	25
	BThe projector may not be at the correct distance	19,
	from the screen.	20
	BThe lens may be dirty.	–
	BThe projector may be tilted too much.	18
The color is pale	B“COLOR” or “TINT” adjustment may be incorrect.	38
or grayish.	BThe input source which is connected to the	–
	projector may not be adjusted correctly.
No sound can	BThe audio signal source may not be connected	–
be heard.	properly.
	BThe volume adjustment may be at the lowest	30,
	possible setting.	33
The remote	BThe battery may be weak.	–
control unit	BThe battery may not be inserted correctly.	23
does not	BThe remote control signal receptor on the projector	23
operate.	may be obstructed.
	BThe remote control unit may be out of the	23
	operation range.
The buttons on	BThe “CONTROL KEY” may be set to “OFF”.	48
the projector do	In order to set the “CONTROL KEY” to “ON”
not function.	without using the remote control unit, keep holding
	down the ENTER button on the projector and press
	the MENU button for more than 2 seconds.

58-ENGLISH