Power Transistor Circuit

POWER TRANSISTOR CIRCUIT

CIRCUIT DESCRIPTION

The air conditioner control assembly controls the blower speed by varying the voltage at terminal BLW which applies the base current to the power transistor.

The air conditioner control assembly also monitors the power transistor collector voltage at terminal VM, to control blower air volume precisely.






DIAGNOSTIC CHART





WIRING DIAGRAM





WIRING ROUTING

Step 1:

Step 2:

INSPECTION PROCEDURE