Motor - Hisense WFU7012 Service Manual

10. COMPONENT TESTING INFORMATION

10.3 MOTOR

Wiring
diagram
Function
Test points
and result
Circuit in the PCB / Wiring Diagram
The SCR controls to impose different break-over voltage onto the stator to control
the size of rotation speed, and when the rotation speed increases up to a null
value (600rpm, the complete machine), switch off the high-speed tap via K1 to
reach 1400rpm, the maximum rotation machine of complete machine; adjust the
rotation direction of rotator via K2 and K3 so as to make the complete machine to
revolve clockwise and anti-clockwise.
Test points
M1-M3
M2-M3
M4-M5
M6-M7
M7 M6 M5 M4 M3 M2 M1
Result
0.832±7% Ω
2.27±7% Ω
1.617±7% Ω
103±7% Ω
41
Remarks