Service ManualModelModelModelModel No.:No.:No.:No.: 75UF555075UF555075UF555075UF55504-2.4-2.4-2.4-2. MainboardMainboardMainboardMainboard4-2-1.4-2-1.4-2-1.4-2-1. FunctionFunctionFunctionFunction DescriptionDescriptionDescriptionDescriptionProcess signal which incept from exterior equipment then translate into signal that panel candisplay.4-2-2.4-2-2.4-2-2.4-2-2. ConnectorConnectorConnectorConnector dedededefifififinitionnitionnitionnition14141414IRIRIRIR &&&& KeyKeyKeyKey InterfaceInterfaceInterfaceInterfaceCND1CND1CND1CND1PinPinPinPin numbernumbernumbernumber SignalSignalSignalSignal namenamenamename1 5V2 RED3 GRE4 IR5 GND6 K07 K18 K29 K310 K411 K512 K613 K714 GNDInverterInverterInverterInverter connectorconnectorconnectorconnector CND2CND2CND2CND2PinPinPinPin numbernumbernumbernumber SignalSignalSignalSignal namenamenamename1 12V2 12V3 BLO4 ADJ5 GND6 GNDSpeakerSpeakerSpeakerSpeaker connectorconnectorconnectorconnector CNA3CNA3CNA3CNA3PinPinPinPin numbernumbernumbernumber SignalSignalSignalSignal namenamenamename1 ROUT+2 ROUT-3 LOUT-4 LOUT+