Teletype WorldNav 3100, User Manual

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Hardware Settings 17
© 2007 TeleType Co.
2.5 Unit Charging
Your WorldNav GPS has been tested for functionality. During the shipping process the battery may have
become discharged.
1. Plug the power cord into the bottom of the GPS in the hole marked DC 12V. Do not plug the cord into the
Audio jack.
2. Press <Reset> button located on the back of the GPS.
3. As you drive, the battery will charge.
The WorldNav 3100 can be charged with an AC/DC adapter or the included car power jack. AC/DC adapters
(part # 3020) can be purchased on the TeleType website. Note: If you buy an A/C adapter be sure to choose
one that offers 12 volts, 1 amp power. Using lower than 1 amp will not allow the battery to re-charge.
2.6 Calibration
1. If you touch the screen and the wrong letter appears, you may need to calibrate the GPS. Press the <Main
Menu> hardware button and then <Settings>.
Main Menu - Settings
2. Select the <Calibration> tab and press the <Calibration> button.
Calibration Button
3. Use a stylus (or dull pencil) to press a series of cross-hatches that will appear on your screen to
calibrate your screen display. Repeat this process periodically to optimize screen accuracy.
Calibration Screen