Samsung WF-F125AV Service Manual page 9

13. CIRCUIT DESCRIPTIONS
13-4. M OTOR CIRCUIT
 Function
- Supplies power to the motor and turns it CW/CCW (Right / Reverse direction).
 Description
- The operation of TRIAC1 is the same as that of the driving system.
- If the electric potential of R49 is grounded (0V), TRIAC1 turns on.
- CN1 detects if the door is locked or unlocked. If unlocked, it does not apply power to the motor even if TRIAC1 turns on.
- If the door is unlocked and TRIC turns on, the motor connected to CN4 is supplied with power and drives CW (right
direction).
- Under such conditions, turning RELAY3 on will drive the motor CCW (reverse) as the wiring is switched to CCW.
- Turning RELAY4 on will switch the winding of the motor to one for higher driving.
13-4