Hi
jimsal,
Welcome to Fixya. Yes Diagnosis is correct because SC670 is a common error on this machine.
SC670 mistake Engine Response - After powering on the machine, a response is not received from the engine within 30 second. Which means when the main power is turned on or the machine starts warming up from energy-saving mode, the controller does not receive a command signal from the
BCU. There could be few possibilities that you need to check and diagnose
Reasons:
- Loose connection
- Defective controller
- Defective
BCU
Troubleshooting:
- Turn the main switch off and on.
- Check the connection between the
BCU and controller.
- Replace the controller.
- Replace the
BCU.
Here's the
illustration of the controller:
To reinstall the controller board into the printer push the bottom center area of the board
After replacing the
BCU or controller, remove the
NVRAM on the old board and put it on the new one.
This should be the series of troubleshooting. Unfortunately, this is not an easy fix. If you do not have any repair experience, i would advise you to call a
Ricoh professional so that he could take care of the problem.
Thanks for using Fixya.
