How to Fix E740 Ether Board Error
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• Step 3: – Check the Main Controller PCB<br />
• You should try <strong>to</strong> check the connection of the<br />
Main Controller PCB 1. Might be, it occurs due<br />
<strong>to</strong> the cause of contact that has a poor<br />
connection. Then, also check the wiring<br />
properly <strong>to</strong> the DC controller PCB DC, the<br />
composite power supply, the transfer charging<br />
roller and other connections.<br />
• Step 4: – Change Main Controller PCB1<br />
• If the above step is not working, then you<br />
should do one thing that is <strong>to</strong> try <strong>to</strong> replace<br />
the Main Controller PCB 1.<br />
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