900 MHz Cordless Telephone User Guide 45TroubleshootingIf your 900 MHz cordless telephone is not performingto your expectations, try these steps. If you are stillunable to resolve the problems, contact your PBXAdministrator.Note: Do not attempt to service this unityourself. All service must be performed byqualified service personnel.Problem Cause/Corrective ActionWarning tone andNO SERVICEmessage• Make sure the base stationantenna is fully vertical.• Move closer to the basestation.• Check for LOW BATTwarning.• Select a different channelon your handsetWarning tone andblank display• Select a different channelon your handset.After TALK button ispressed, handsetdisplays blankscreen• Make sure the base stationpower is on.• Make sure the base stationis connected to the PBX.• Battery may be weak.Charge the battery withoutinterruption for 5 hours.