Panasonic PT-L780NTE, PT-L780E manual Before calling for service, Problem Possible cause

Before calling for service

Before calling for service, check the following points.

Problem	Possible cause
Power does not turn	B The mains lead may not be connected.
on.	B The MAIN POWER switch is turned off.
	B The main power supply is not being supplied to the
	mains socket.
	B TEMP indicator is illuminated or flashing. (Refer to page
	58.)
	B LAMP indicator is illuminated or flashing. (Refer to page
	59.)
No picture appears.	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 28.)
	B The BRIGHT adjustment setting may be at the minimum
	possible setting. (Refer to page 37.)
	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
	to pages 29 and 48.)
	B The projector may not be at the correct distance from the
	screen. (Refer to pages 27 and 50.)
	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.	page 37.)
	B The input source which is connected to the projector
	may not be adjusted correctly.
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
	setting. (Refer to pages 15 and 43.)
	B A cable may be connected to the AUDIO OUT jack.
	B The MUTE function may be active (page 43.)

Problem	Possible cause
The remote control	B The batteries may be weak.
unit does not operate.	B The batteries may not be inserted correctly. (Refer to
	page 20.)
	B The remote control signal receptor on the projector may
	be obstructed. (Refer to page 20.)
	B The remote control unit may be out of the operation
	range. (Refer to page 20.)
	B Press and hold the Power button on the remote control
	unit or the projector for more than 5 seconds to turn the
	power off and back on again. At this time, the projector
	will turn on and go to the standby condition.
The buttons on the	B The CONTROL KEY may be set to “OFF”. (Refer to
	page 46.)
projector do not
	In order to set the CONTROL KEY to “ON” without using
function.
	the remote control unit, keep holding down the ENTER
	button on the projector and press the MENU button for
	more than 2 seconds. It will then be turned ON.
	B Press and hold the Power button on the remote control
	unit or the projector for more than 5 seconds to turn the
	power off and back on again. At this time, the projector
	will turn on and go to the standby condition.
The picture does not	B The signal format (TV system) may not be set correctly.
	(Refer to page 37.)
display correctly.
	B There may be a problem with the video tape or other
	signal source.
	B A signal which is not compatible with the projector may
	be being input. (Refer to page 61.)
	B If you select SXGA60 or SXGA60+ type RGB signals,
	the pictures may not be projected correctly. If this
	happens, press the AUTO SETUP button.
Picture from	B The cable may be too long.
	B The external video output for the laptop computer may
computer does not
	not be set correctly.
appear.
	(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.)
	B If an RGB input indicator (Refer to page 14) is turned off,
	the video signals may not be output from the computer.
	B RGB2 SELECT in the OPTION menu is set to OUTPUT
	when the signals are input to RGB2 IN / RGB OUT
	connector. (Refer to page 44.)

Others

66-ENGLISH ENGLISH-67