Nextar I4-BC User Guide - Page 26

Troubleshooting Take steps described in the tables below to solve simple problems before contacting customer service. If you suspect something wrong with the unit, immediately turn the power off and disconnect the power connector from the unit. Never try to repair the unit yourself because it is dangerous to do so. PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION User can't turn the unit on. There is no sound. Dim screen. The adaptor is not correctly connected. The built-in rechargeable battery is weak. Connect the adaptor correctly. Use the adaptor to supply power or charge the battery. The volume may be turned down or mute. Turn up the volume or turn on the sound output. The brightness may be turned down. Adjust the brightness of the LCD. The unit can't receive satellite signals or can't orient. The unit may be obstructed Make sure to use the unit by buildings or metal block. out of room. 26