AIR CONDITIONER - Heronhill Air Conditioning Ltd

9-6-1 How to check the P.C. board(1) Operating precautions1) When removing the front panel or the P.C. board,be sure to shut off the power supply.2) When removing the P.C. board, hold the edge ofthe P.C. board and do not apply force to theparts.3) When connecting or disconnecting the connectorson the P.C. board, hold the Whole housing.Do not pull at the lead wire.FILE NO. SVM-05020(2) Inspection procedres1) When a P.C. board is judged to be defective,check for disconnection, burning, or discolorationof the copper foil pattern or this P.C. board.2) The P.C. board consists of the following 2 partsa. Main P.C. board part:power relay, indoor fan motor drive circuit andcontrol circuit, C.P.U. and peripheral circuits,buzzer drive circuit and buzzer.b. Infrared rays receive and indication parts:Infrared rays receiver unit and LED.− 67 −