29TroubleshootingTroubleshooting GuideProblem The BHT power does not turn ON.x Ensure that the battery cartridge has been properly inserted into the BHT. (See page 11.)x Check the battery power level (see page 25.) and charge if necessary.x Wipe any dirt from the battery cartridge and BHT terminals. (See page 4.)If the power still does not turn ON after taking the above measures, there is apossibility that the BHT may be broken. Notify the system administrator.Problem Unable to charge the BHT.x Ensure that the dedicated battery charger is being used. (See page 10.)x Ensure that the battery cartridge has been properly inserted into the BHT. (See page 11.)x Ensure that the BHT has been properly placed on the charger.The BHT LED will turn red when properly placed on the charger.x Wipe any dirt from the battery cartridge and BHT terminals. (See page 4.)x When using an old battery cartridge that has been repeatedly charged 300 times or more,replace with a new one. (See page 26.)If still unable to charge the BHT after taking the above measures, there is a possibilitythat the charger may be broken. Notify the system administrator.Problem The BHT power turns OFF immediately.x Ensure that the battery cartridge has been charged (see page 25) and charge if necessary.x If set to auto power OFF, the BHT power will automatically turn OFF if not used for the setlength of time. (See page 17.)The auto power OFF setting can only be changed at user programs.