20. Troubleshooting Guide
If you are encountering problems with the Braille Sense U2, please take a look at the following suggestions for solving many common problems: 

20.1 The Braille Sense U2 Will Not Turn On
1. Check to make sure that the battery is inserted in to its compartment properly.
2. If the battery is inserted properly, connect the AC adapter, and plug the AC adapter in to an electrical outlet. The battery may need to be charged.
3. Or, Check the location of the keyboard lock switch. If this switch is placed in the "lock" position, the power switch is not functional.

20.2 The Voice Cannot Be Heard
1. Make sure the volume is loud enough to be heard. Press "backspace-F 4" to raise the volume.
2. Make sure the voice is turned on. Press "Backspace-F2" to toggle the voice on/off.

20.3 The Voice is Too Fast to Understand
1. Press "space-F1" to lower the voice rate.

20.4 The Voice Pitch Is Too Low or Too High to Understand
1. Press "enter-F1" to lower the pitch, or press "enter-F 4" to raise the pitch of the voice.

20.5 You Don't Know Where You Are
1. If you have become disoriented as to your location on the Braille Sense U2, and cannot remember where you are, press "F1" to access the "program" menu. Then, press "F2-F3" to switch among the open programs. If you are in the Word Processor, pressing "space1-5-6" gives you your current location in the open document.

20.6 No Internet Connection
1. If you are using a LAN connection, make sure that the Ethernet cable is connected and that the Ethernet port is turned on in "Global Options".
2. If you are using a modem, make sure that the phone line is connected to the modem.
3. If you are using a DSL connection, make sure that the Ethernet cable is connected and that the Ethernet port is turned on in "Global Options".
4. If you are using a Wi-Fi connection, ensure wireless is turned on. Use "Backspace-dots-1-4-5-6" to toggle wireless on/off. 

20.7 Email
1. If you are having trouble downloading email, please contact your Internet service provider to make sure that you have the correct POP3 and SMTP settings.
2. If you cannot send or receive mail, make sure you have an active connection to the Internet.

20.8 The Braille display Does Not Display Braille
1. If the Braille display does not display Braille, make sure that the Braille display is turned on. Use "Backspace-F3" to toggle the Braille display on/off.

20.9 The Braille Sense U2 Does Not Respond
1. If the Braille Sense U2 does not respond to keystrokes or commands, it may be necessary to reset the unit. To reset the Braille Sense U2, press the reset button on the rear panel, or press "1-2-3-4-5-6-F2-F3." Do NOT hold the reset button for more than 5 seconds.
2. If pressing the "Reset" button does not revive the Braille Sense U2, you may need to perform a hard reset. Press and hold the "Forward" button on the front media panel. (This button is the right-most button in the media group and looks like a right arrow.) While holding "Forward", quickly press and release the "Reset" button. Continue to hold the "Forward" button until the unit revives (this should occur within 30 to 45 seconds). 

20.10 The LCD Does Not Come On
If the LCD screen does not come on, make sure that it is turned on. Press "space-o (dots 1-3-5)" to open "Global Options". Press "F3-F 4" twice. Press "space" to turn the LCD screen option on, and press "enter" to save the option settings.
