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Samsung Electronics
9-2 Description of Operating Sequence (continued)
High Voltage Transformer input power sensing circuitry
Refers to the circuitry that detects and check if the input power is correctly supplied to the primary terminal of
High Voltage Transformer when the microwave oven is operating. If any abnormal condition(eg. Micro S/W,
Relay open) is detected, the error code (E41, E42) shows on the display window. When the error code
appears in the display window, check the waveform(A), (B), (C),or (D).
In case of Power Relay 1 (RY2), check the waveform (A), (B) below.
In case of Power Relay 2 (RY5), check the waveform (C), (D) below.
Wiring Diagram & Operating Sequence
