Extron electronic MVX PLUS 128 manual Troubleshooting, Configuration Worksheets

Operation, cont’d

Troubleshooting

This section gives recommendations on what to do if you have problems operating the switcher, and it describes an actual image problem that Extron has encountered.

1.	Ensure that all devices are plugged in and powered on. The switcher is
	receiving power if one of the front panel Power Supply LEDs is lit green.
2.	Check to see if one or more outputs are muted.
3.	Ensure an active input is selected for output on the switcher.
4.	Ensure that the proper signal format is supplied.
5.	Check the cabling and make corrections as necessary.
6.	Call the Extron S3 Sales & Technical Support Hotline if necessary.

Configuration Worksheets

Rather than trying to remember the configuration for each preset, use worksheets to record this information. Make copies of the blank worksheet on page 3-47 and use one for each preset configuration. Cross out all unused or inactive inputs and outputs. Use different colors for video and audio.

Worksheet example 1: System equipment

Figure 3-72 shows a worksheet for an MVX 128 in a fictional organization with the system hardware annotated. Inputs 10 and 11 have no connection in this organization, so they have been crossed out on the worksheet.

					Input sources
Camera/	Camera	PC 1	PC 2	Audio	Classroom	Classroom	Laptop	Rack DVD
mic - Main	#2	RGB 202	RGB 202	CD	#1 VCR	#2 VCR	RGB 202	(USP 405)
podium					USP 405	USP 405

VTG 300

1 2 3

1		2		3
Main hall	Main hall			Podium
FP #1		FP #2	monitor

4 5 6

4		5		6
Sound		Sound		VCR
system	system		(VSC 500)
#1	#2

7

7

8

8

Lobby

monitor

9

10

11

12

		Output destinations
Preset #	3	Title: Weekly status mtg Video:	Audio:

Fill in the preset number and use colors, or dashes, etc. to make connecting lines.

Indicate if the configuration is for Video, Audio, or both.

Figure 3-72 — Worksheet example 1: System equipment

Inputs include PCs, an audio CD player, cameras, and an Extron VTG 300. Output devices include monitors, front and rear projectors, a stereo, and a VCR for recording presentations.

The VTG 300 video test generator connected to input 12 enables a video test pattern to be sent to one, several, or all output devices for problem isolation or adjustment purposes. An audio test tape or CD could be used in a similar manner to check out the audio components.

3-44 MVX Plus 128 VGA Matrix Switchers • Operation