Troubleshooting The Display - Midtronics MDX-655 Instruction Manual

Troubleshooting the Display

If the display does not turn on:
• Check the connection to the vehicle battery.
• The vehicle battery may be too low (below 1 volt) to power the analyzer.
Fully charge the battery and retest.
• The analyzer's AA batteries may need to be replaced. (alkaline recom-
mended).
• If the analyzer does not power on when you press and hold the MENU but-
ton, replace the AA batteries.
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