SC6xx: Communication
457
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC670-02 D Engine is down when machine starts up (SC reboot can not be performed) (* See “When
SC670 Is Displayed” below)
Machine-down was detected after the /ENGRDY signal was not asserted.
The engine board was reset at an unexpected time
Check the connection between the engine board and the controller board.
• If it is always reproduced, replace the engine board. If the problem persists, consider
replacing the controller board or other boards between them.
• If reproducibility is low, multiple causes are to be considered, such as software, engine
board, controller board, and PSU.
• Check the status of ID chip in each toner cartridge (clean or correct the position).
When SC670 is Displayed
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC672-10 D Controller start up error
After the machine was powered on, communication between the controller and the operation
panel was not established.
• Controller stalled
• Board installed incorrectly
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