Installation User guide
2-15
MLC 226 IP Series • Installation
PRELIMINARY
Resetting the Unit
There are four  reset modes (numbered 1, 3, 4, and 5 for the sake of comparison 
with an Extron IPL product) that are available by pressing the Reset button on the 
side panel. The Reset button is recessed, so use a pointed stylus, ballpoint pen, or 
Extron Tweeker to access it. See the following table for a summary of the modes.
C
  Review the reset modes carefully. Using the wrong reset mode may result 
in unintended loss of fl ash memory programming, port reassignment, or a 
controller reboot.
  N
  The reset modes listed below close all open IP and Telnet connections and close 
all sockets. Also, the following modes are separate functions, not a continuation 
from Mode 1 to Mode 5.
Reset Mode Comparison/Summary
Mode
 Activation   Result  Purpose/Notes
  1 Hold down the recessed 
Reset button while applying 
power to the MLC.
     After a mode 1 reset 
is performed, update the 
MLC’s firmware to the 
latest version. Do not 
operate the MLC firmware 
version that results from the 
mode 1 reset. If you want to 
use the factory default 
firmware, you must upload 
that version again. See 
appendix B, “Firmware 
Updates,” for details on 
uploading firmware. 
  3 Hold down the Reset button 
for about 3 sec. until the 
Reset LED blinks once, then 
press Reset momentarily 
(<1 sec.) within 1 second.
  4 Hold down the Reset button 
for about 6 sec. until the 
Reset LED has blinked 
twice (once at 3 sec., again 
at 6 sec.). Then press Rese
t 
momentarily (for <1 sec.) 
within 1 second.
  5 Hold down the Reset button 
for about 9 sec. until the 
Reset LED has blinked three 
times (once at 3 sec., again 
at 6 sec., again at 9 sec.). 
Then press Reset 
momentarily (for <1 sec.) 
within 1 second.
The MLC reverts to the factory default 
firmware. Event scripting will not start if 
the MLC is powered o
n in this mode. All 
user files and settings (drivers, 
adjustments, IP settings, etc.) are 
maintained.
 If you do not want to update 
firmware, or you performed a mode 1 reset 
by mistake, cycle power to the MLC to 
return to the firmware version that was 
running prior to the mode 1 reset. Use the 
0Q SIS command to confirm that the 
factory default firmware is no longer 
running (look for asterisks following the 
version number.)
Mode 3 turns events on or off. During 
resetting, the Reset LED flashes 2 times if 
events are s
tarting, 3 times if events are 
stopping.
Mode 4
• Enables ARP capability.
• Sets the IP address back to factory 
default.
• Sets the subnet back to factory default.
• Sets the default gateway address back 
to the factory default.
• Sets port mapping back to factory 
default.
• Turns DHCP of
f.
• Turns events off.
Reset LED flashes 4 times in quick 
succession during reset.
Mode 5 performs a complete reset to 
factory defaults (except the firmware).
• Does everything mode 4 does.
• Resets almost all the real time 
adjustments: all audio settings, limit 
initial power up volume, power 
up/down delay, auto power down, and 
misc. options. This does not affec
t an 
optional MLS switcher, however.
• Clears driver-port associations and port 
configurations (IR/RS-232).
• Removes button configurations.
• Resets all IP options.
• Removes scheduling settings.
• Removes/clears all files from switcher.
The Reset LED flashes 4 times in quick 
succession during the reset.
Use mode 1 
to revert 
to the factory default 
firmware version if 
incompatibility issues 
arise with 
user-loaded firmware.
Mode 3 is useful for 
troubleshooting.
Mode 4 enables you 
to set IP address 
information using 
ARP and the MAC 
address.
Mode 5 is useful if 
you want to start over 
with configuration 
and uploading, and 
also to replace events.










