How To Check Simply The Main Parts - Toshiba RAS-M10SKV-E Service Manual

11-9. How to Check Simply the Main Parts

11-9-1. How to Check the P.C. Board (Indoor Unit)
(1) Operating precautions
1) When removing the front panel or the P .C. board, be sure to shut off the power supply breaker.
2) When removing the P .C. board, hold the edge of the P .C. board and do not apply force to the parts.
3) When connecting or disconnecting the connectors on the P .C. board, hold the whole housing. Do not pull
at the lead wire.
(2) Inspection procedures
1) When a P .C. board is judged to be defective, check for disconnection, burning, or discoloration of the
copper foil pattern or this P .C. board.
2) The P .C. board consists of the following 2 parts
a. Main P.C. board part :
DC power supply circuit, Indoor fan motor control circuit, CPU and peripheral circuits,
buzzer, and Driving circuit of louver.
b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :
To check defect of the P .C. board, follow the procedure described below.
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