Canon i-SENSYS MF5940dn
- Code: E733-0000
- Description: Printer communication error
Communication error between the Engine Controller PCB and the Main Controller PCB occurred. - Remedy: 1. Check the connection of connector between the Engine Controller PCB and the Main Controller PCB. 2. Install the set of the controller firmware. 3. Replace the Main Controller PCB. 4. Replace the Engine Controller PCB.
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