Computrac MAX-1000 User's Manual - Arizona Instrument

14 TROUBLE DIAGNOSISSYMPTOM DIAGNOSIS REMEDYAnswer always zero Temperature too low Raise setpointNo heatSee symptom belowSample too smallIncrease sampleAnswers vary too much Sample too small Reduce sampleSamples not uniformGrind sampleSample particles too largeGrind sampleBlank display Contrast controls not set Adjust contrastNo powerCheck power cordconnectionsMicroprocessor failureOpen front, press resetBacklight connector disconnected ReconnectHeat will not turn off Set wrong Adjust ending criteriaCircuit board failureCall AZIMoistures too high Temperature set too high Lower tempBent sample panUse new panDirty sample panUse new panDebris in balance gapsCleanDirty heater assemblyClean heater assemblyMoistures too low Temperature too low Increase tempSample too smallIncrease sampleSample too largeDecrease sampleSample needs spreadingSpreadMoisture never stops increasing Other volatiles Try lower temperatureBalance driftingRun drift checkNo heat Voltage selection wrong Check power module atrear of instrument, set tocorrect voltageWiring failure in heater circuitCall AZI CustomerServiceHeater failureCall AZI CustomerServiceDoor sensor failureCheck display for LIDOPEN message whenopenTemperature setpoint too lowRaise temperature aboveroom ambient or standbytemperature62