Panasonic TX-55AX630B Service Manual

Also see for TX-55AX630B: Manual

4 secOncePower LED blinking timing chart1. SubjectInformation of LED Flashing timing chart.2. ContentsWhen abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, thedefective block can be identified by number of blinking of the Power LED on the front panel of the unit.Blinkingtimes Blinking timing Contents Check point1 BL_SOSA BOARDP BOARDPANEL3 IROM SOS A BOARD7 SUB3.3V A BOARD8 SOS A BOARDPANEL9 SOUND_SOS A BOARD10 FRC_SOS A BOARD12 BE_SOS A BOARD13 EMERGENCY A BOARDLCD Panel Test ModePurpose:To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.How to Enter:While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times.How to Exit:Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.How to confirm:If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.And then, judge by the following method.Still abnormal picture is displayed: The cause must be in LCD Panel.Normal picture is displayed: The cause must be in A board.Remarks:The test pattern is created by the circuit in LCD Panel.In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.No LightLight22