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Nobuo range hood CXW-16D automatic failure example

In Electronic Infomation Category: N | on April 14,2011

Symptom: All key operation is invalid

Analysis and XC5204-6PC84C datasheet and Maintenance: It consists of a deep-style cabinet, panel cover, thousands of winged wind wheel, electrical, oil cup, lights and XC5204-6PC84C price and key switch. Machine wiring shown in Figure 1. The control points manually, automatic two parts, each controlled by a key switch S. Power on, press the light button lights lit EL; press the "left / right motor control" button, the motor M1 (left), M2 (right) start the operation; press the "Auto" button, left and XC5204-6PC84C suppliers and right motor control keys reset, the circuit in the automatic control state.


Figure 1 deep Nobuo CXW-16D machine automatic hood wiring diagram

To respond when the concentration of indoor smoke, the automatic control circuit to work, the motor M1, M2 functioning smoke; press the "Stop" button, the switch to chain movement, the reset button, disconnect the power, the machine stopped working.

Analysis based on symptoms, all the key operation is invalid, usually due to the power circuit breaker. Possible causes of the failure reasons:

(1) abnormal electrical plug connection XP.

(2) Insurance FU blown fuse.

(3) key switch is bad or S contacts fall off, etc. related to wire connectors.

Were examined XP, FU, S are normal, that the public key switching power supply connector (see Figure 1 A point) off, causing all the key switch failure caused by power failures as described. After the fall weld, failure is ruled out.

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