3-9

MPX 423 A • Operation
PRELIMINARY
Resetting the Unit
There are four reset modes activated by a recessed Reset button on the rear panel.
Use a pointed sytlus, Extron Tweeker, or ballpoint pen to activate the Reset button.
L9R
L10R
L11R
L12R
L3R
L R R
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RESETACT LINK
RS-232
LAN
S-VIDEO VARIABLE
Reset button
The I/O button on the front panel also has limited reset capabilities, described on
the following page.

Hardware reset modes

The available reset modes are listed in the table below.
C Reset modes close all open IP and Telnet connections, and all sockets.
Reset Modes Description
Mode 1
(Hardware Reset)
Holding the Reset button while applying power defaults the unit back
to the base firmware that shipped with the unit from the factory. Event
scripting does not start when the unit is powered on in this mode. This
allows you to recover a unit that has incorrect code or updated firmware
running. All user files and settings are maintained. User Web pages
may not work correctly if the unit is using an earlier firmware version.
Mode 3
(Event Reset)
Holding the Reset button until the I/O LED blinks once (3 seconds)
followed by a momentary (<1 second) press turns events either on or off,
depending on the current state of the events.
Mode 4
(IP Setting Reset)
Holding the Reset button until the I/O LED blinks twice (6 seconds)
followed by a momentary (<1 second) press resets IP settings. The I/O
LED blinks four times in quick succession, confirming a Mode 4 reset.
This mode
1. Enables ARP program capability
2. Sets IP address back to factory default
3. Sets subnet back to factory default
4. Sets gateway address back to factory default
5. Turns DHCP off
6. Turns events off
Nothing happens if the momentary press does not occur within one
second.
Mode 5
(Absolute Reset)
Holding the Reset button until the I/O LED blinks three times (9
seconds) followed by a momentary (<1 second) press causes a complete
system reset back to factory default conditions. Nothing happens if the
momentary press does not occur within 1 second. The I/O LED blinks
four times in quick succession, confirming a Mode 5 reset.

Factory reset modes

Factory resets can be set using the front panel I/O button. To reset the MPX 423 A
to factory defaults
1. Press and hold the I/O button on the front panel while plugging in AC power.
2. Continue to hold the I/O button until all LEDs on the front panel flash. Once
the I/O button is released, power-up continues and the LEDs go back to their
default configuration.