User's Manual

Table Of Contents
1 About the Trimble Juno T41 handheld
If you cannot force the application to close, or if closing and restarting the application does not fix
the problem, reset the device. This forces the operating system to reboot, but may cause unsaved
data to become corrupted. A reset should be done only if the device is otherwise unresponsive.
To perform a reset, do one of the following:
l press and hold the Power button to display a countdown; continue to hold the Power button
until it counts down to zero, followed by a brief appearance of the boot screen. Release the
Power button.
l press and hold the Power button for 1-2 seconds to display the Power menu, then tap Reset.
Resetting the handheld to factory defaults
You can factory-reset the Juno T41 handheld if you forget the password that you use to lock the
device, or to delete all of your personal data from the handheld's internal storage, system and
application settings, and any downloaded applications.
1. Press and hold the Power button for 1-2 seconds to display the Power menu, then tap Reset.
2.
When the screen goes completely black, press and hold the Windows button .
3. When the Juno T41 screen appears, press the right programmable button while still holding the
Windows button. Then release both buttons.
4. Press the Action button on the left side of the handheld to clear the persistent store. Press any
other button to cancel and continue booting normally.
Absolute Power Off mode
The Juno T41 handheld features a battery cut-off mode that enables the device to enter the
absolute lowest power mode possible, even lower than the Shutdown power state. In this mode,
the draw on the battery is less than 20 uA. The primary purpose for this mode is to prolong the shelf
life of the battery while the product is between the production factory and the customer. A
secondary purpose is to ensure the device is completely powered down before shipping the product
via air freight, or when putting the product into storage for an extended period, typically longer
than a week.
To activate the Absolute Power Off mode:
1. Disconnect the power cable, if connected.
2. Press and hold the Power button for 1-2 seconds to display the Power menu, then tap Reset.
3. The handheld resets. When the Juno T41 screen appears, press and hold the left
programmable button and the right programmable button. The message Please remove AC.
System is turning off appears.
The device is now in Absolute Power Off mode.
Trimble Juno T41 User Guide 23