Extron electronic MVX 88 Series ユーザーズマニュアル

To reset a switcher to the factory default settings, press and hold the I/O button 

on the front panel while applying AC power (figure 3-42).  Continue to hold the 

I/O button until all LEDs light and then release the I/O button.  The power up 

sequence completes (all LEDs turn off then turn on and off from left to right, the 

Video and Audio LEDs turn on, and all other LED remain off).  System reset does 

the following:

• Clears all ties and presets.
• Clears all video and audio mutes.
• Sets all input audio gain levels to their default (0 dB) values.
• Returns the output audio level to the professional (+4 dBu) level.

Press and 

hold the I/O button while

you apply power to the switcher.

Power

The switcher lights 

all of the LEDs.

The switcher continues the power up process.

Release the I/O button.

The current configuration, all presets, and all input audio levels are saved in non-

volatile memory within 5 seconds of a change or exiting Audio Setup mode.  When 

power is applied, the last current configuration is retrieved.  The previous presets 

remain intact.
N

Audio Setup mode.  Before 5 seconds have elapsed, changes that you