Error code reference

Samsung Microwave Error Code E4

Problem with the weight sensor (output frequency = 0 Hz).

First step from the service manual

Exchange the weight sensor and check the wire connection.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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E4 on my Samsung Microwave

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Problem with the weight sensor (output

From Service Manual 787408, p.20:

1.Exchange the weight sensor and check the wire connection.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part DA92-00384N

Main PCB assembly

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First step from the service manual

Get the full diagnostic procedure for E4.

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