Service ManualModel No.: LE22S6004-2. Mainboard4-2-1. Function DescriptionProcess signal which incept from exterior equipment then translate into signal that panel candisplay.4-2-2. Connector definition14IR & Key connectorCN7Pin number Signal name1 5V2 IR3 RED4 GRE5 GND6 K07 K18 K29 K310 K411 K512 K613 K714 GNDInverter connector CN3Pin number Signal name1 12V2 12V3 BLO4 ADJ5 GND6 GNDSpeaker connector CNA1Pin number Signal name1 LO2 GND3 GND4 RO