Mini PIR Alarm (490-0425) Troubleshooting Faxback Doc. # 6602 TROUBLESHOOTING If you have problems with your Mini PIR Alarm, the following chart might help. If you still have problems, take the alarm to your local Radio shack store for assistance. PROBLEM PROBABLE CAUSE REMEDY No sound when CHIME/OFF/ALARM set to OFF. Set CHIME/OFF/ALARM object should be to CHIME or ALARM. detected. Battery low or dead. Replace the battery. Battery not installed. Install a new battery Detection angle incorrect. Adjust alarm's angle Lens window blocked. Remove obstruction. (br/all-6/27/94)