5.2. Service tool mode5.2.1. How to access1. Select [SRV-TOOL] in Service Mode.2. Press [OK] button on the remote control.Display of TD2Microcode version —Display of Flash ROM maker code -Display of SOS History ---------------SRV-TOOLTD2Microcode:00500910Flash ROM : 1 - 227EPTCT : 00 . 00 . 00 . 00 . 00 Time 00000:40 On/Off 0000022 . POWER ON Time, On/OffPress [MUTE] button (3sec)5.2.2. Display of SOS HistorySOS History (Number of LED blinking) indication.From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.This indication will be cleared by [Self-check indication and forced to factory shipment setting].5.2.3. POWER ON Time, On/OffNote : To display Time, On/Off menu, highlight position, then press MUTE for 3sec.Time : Cumulative power on time, indicated hour : minute by decimalOn/Off : Number of On/Off switching by decimalNote : This indication will not be cleared by either of the self-checks or any other command.5.2.4. Exit1. Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the unit.10