160 HP Jornada 680/680e User’s Guide

Adjust the room lighting. Some types of lighting interfere with infrared communication. Try moving to a different location or turning off some lights.

The HP Jornada cannot send files to or receive files from a Windows CE 1.0 device via Infrared. Windows CE 1.0 does not support the FastIR file transfer protocol used by your HP Jornada.

Display

If you are having trouble viewing your data, here are some suggestions.

Screen is blank

If your HP Jornada fails to respond when you briefly press the On/Off button, be sure you have pressed the button firmly. If that does not work:

Make sure the main battery is installed properly.

Adjust the display contrast. On some devices, the screen can darken or lighten to the point that it appears to be turned off.

Reset your HP Jornada. (See the Resetting section in this chapter.)

Recharge the main battery.

Screen is dark

Prolonged exposure to direct sunlight may cause your

HP Jornada screen to temporarily darken. This is a normal occurrence with LCD screens and is not permanent.

Resetting

Occasionally, you will need to reset your HP Jornada, for example, after you restore data from your desktop PC or when the operating system stops responding. There are two methods of resetting: