Troxler RoadReader 3430 - Page 115

Appendix A–6
Possible Malfunction Indicators
Symptom
Possible Malfunction
Batteries discharge prematurely
HV Board
Batteries do not charge
CPU Board,
Preamp Board
Battery low indicator does not
function correctly
CPU Board
Beeper stops (or is erratic)
CPU Board
Display malfunctions
CPU Board
Display test Fails
CPU Board
Fails stability or drift tests
Preamp board
Gauge does not turn on when
charger is connected
CPU Board
Gauge doesn't turn off
CPU Board
Gauge fails stat or drift tests
HV Board
Gauge fails tube test
Preamp board
Moisture or density counts are
unstable
HV Board
No keypad response
CPU Board
No moisture or density counts
Preamp Board,
HV Board