Probable Cause
Low battery charge or bad battery
Corrective Action
Verify battery voltage by accessing MEASUREMENTS MODE by first pressing and holding 0, 2, and OK at the same time. A beep will be heard and MAINTENANCE MODE will appear on the display briefly. Release all keys. Use the SCROLL key until MEASUREMENTS appear on the display. Press OK to select MEASUREMENTS. The display will show BATT VLT = and the value for the battery voltage. If the battery voltage is less than 5.7 VDC, the battery needs to be recharged or replaced.
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