4.1 Troubleshooting148 User ManualI want to confirm my extension number. • Confirm your extension number by pressing the" " key 2 times while on-hook, or through personalprogramming. ( Your Extension Number in 1.1.1 BeforeOperating a Telephone, 3.1.2 Changing PersonalSettings Using Programming Mode)The date and/or time are not correct. • Ask your operator or manager to change the dateor time. ( Date & Time Set in 2.1.7 ChangingSystem Settings Using Programming Mode)The display is dim. • Change the display contrast level.( 1.1.1 Before Operating a Telephone)The MESSAGE/Message button light orMessage/Ringer Lamp is lit.• There are 3 possible reasons:(1) Someone has left a message waiting indicationfor you, (2) Someone has left a Built-in Voice Message (BV)for you, or (3) Someone has left a Voice Mail message for you.Press the MESSAGE/Message button to call theparty back or receive the message."Voice Msg Full" is displayed. • The maximum voice message recording time hasbeen reached. Delete voice messages stored in your personalmessage area or in the common message area. It may take about 10 seconds for the display toreturn to the idle status display even if the remainingrecording time becomes 5 minutes or more.( 1.5.5 Using Voice Messaging (Built-in VoiceMessage [BV]))A power failure has occurred. • When a power failure occurs...All functions of the PBX and Panasonic PTs stop.Outside (CO) line 1 is automatically connected toextension jack 01.This allows outside (CO) line conversations betweenthe connected single line telephone (SLT) and outsidedestination.• When the power is turned back on...Your PBX restarts with the stored data automatically.Memory is protected by a factory-provided lithiumbattery. There is no memory loss except for the dataassociated with Automatic Callback Busy, Redial, andCall Park.Problem Remedy