Troubleshooting - Opticon OPN2003 User Manual

12 Trouble shooting
Since the OPN200x doesn't have a display, it also doesn't have a system menu to resort to
when you've installed a crashing application that prevents you from loading new software
on the OPN200x.
For this reason the OPN200x has a few escape mechanisms to allow you to restart, halt
your application and/or install new software. This can be very useful in case the OPN200x
has crashed or is constantly restarting due to a crashing application.
12.1 Restart mechanisms
The OPN200x has a watchdog timer to determine whether the OS is still
running or has crashed. This watchdog will cause the OPN200x to restart after
Automatic
3 seconds if the OS has crashed. This watchdog timer will not cause a restart
when only the application has crashed.
The OPN200x has a manual restart mechanism that allows you to restart in
situations that the OS is still running, but your the application has crashed. In
Manually order to activate this mechanism, press and hold the trigger or delete key for
at least 20 seconds. After the OPN200x has sounded the restart beep, you can
release the key to complete the restart.
12.2 Halting your application

Firstly, make sure your battery isn't empty and your mini-USB cable is not
connected to the OPN200x.

Then restart your application using one of the two restart methods listed above,
while keeping the trigger key pressed.

While keeping the trigger key pressed, insert the mini-USB cable into the OPN200x
to halt the application.
If successful, the LED of your OPN200x should now be blinking orange. You should now be
able to load new application or OS software.
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