Extron electronic manual Specific problems, 40 IN1508 Scaling Presentation Switcher Operation

Operation, cont’d

Specific problems

The table below shows some common operating problems and their solutions.

Problem	Possible cause	Solution
No image appears.	Power.	Ensure that the video source, the
		switcher, and the display are
		plugged into a live AC power
		source and that the switcher is
		turned on.
	No video input.	Check that the input device is
		outputting a video signal.
	No video output.	Press the Menu button. If the on-
		screen display does not appear,
		check the output connection.
	The output signal is	Select an output rate that is
	incompatible.	compatible with the display.
	The output format is	Press and hold the front panel
	incompatible for the	PIP On button while powering up.
	display.	the switcher. The IN1508 toggles
		between the RGB and YUV output
		formats.

The display may not accept the output sync format.

Check the display’s sync capability and select the correct output sync.

Freeze mode was entered when the image was black.

Issue the SIS command 0F to deactivate freeze mode.

	Video may be muted.	Issue the SIS command 1B to
		disable video mute.
No audio output.	Power.	Ensure that the audio source, the
		switcher, and the amplifier/
		speakers are plugged into a live
		AC power source and the switcher
		is turned on.
	The source is incorrect.	Ensure that the source is
		connected to the correct input and
		that the volume has not been
		turned down or muted.
	The output is incorrect. The IN1508 outputs line level
		audio only. Ensure that it is
		connected to a mixer/amplifier or
		to amplified speakers.
	Volume is too low.	Increase the volume using the
		Audio submenu.
	Audio may be muted.	Issue the SIS command 1Z to
		disable audio mute.
The image is	The output signal is	Use the power up shortcuts to
scrambled.	incompatible.	select an output rate that is
		compatible with the display.

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