What to do if Ricoh MF4 shows Serial Number Error?
If your Ricoh All in One Printer displays a Serial Number Error, the cause may be a defective EEPROM or the EGB was replaced without the original EEPROM. Check the serial number. If the stored serial number is incorrect, contact your supervisor.
General| Brand | Ricoh |
|---|---|
| Model | MF4 |
| Category | All in One Printer |
| Language | English |
General safety guidelines for preventing physical injury and ensuring safe operation.
Precautions to avoid injury during machine operation and maintenance.
Requirements for servicing the machine by trained personnel.
Caution regarding hazardous radiation exposure from controls or procedures.
Conditions and environment necessary for proper machine installation.
Information on routine maintenance to ensure optimal machine performance.
Essential precautions and preparation steps before performing replacement or adjustment.
Key safety and procedural guidelines before servicing the machine.
Safety precautions and replacement procedures for the laser unit.
Safety and installation notes for the fusing unit and lamp.
Caution regarding lithium battery replacement and explosion risk.
Detailed steps for removing the scanner unit.
Steps for removing the ADF unit.
Procedure to replace the ADF motor.
Safety precautions and replacement procedures for the laser unit.
Procedure for removing the laser optics housing unit.
Post-replacement steps including LSU adjustment and color registration.
Troubleshooting steps if MUSIC verification fails.
Steps to remove the AIO cartridge.
Procedure to replace the black AIO motor.
Procedure to replace the color AIO motor.
Procedures for servicing the image transfer unit.
Steps to remove and replace the image transfer belt unit.
Procedure to replace the agitator motor.
Procedure to replace the ITB contact motor.
Safety precautions and procedures for servicing the image fusing unit.
Steps to replace the fusing unit and reset the fuser.
Procedure to replace the fusing lamp.
Steps to replace the controller board.
Procedures for replacing the EGB (Engine Board).
Procedure for replacing and setting the EEPROM.
Procedure for replacing and setting the EEPROM.
Procedure for updating the controller firmware.
Procedure for updating the engine firmware.
General points to understand about Service Call codes.
Troubleshooting for engine-related Service Call codes.
Troubleshooting for SC 1xx errors, including serial number issues.
Troubleshooting for SC 2xx errors related to the laser optics unit.
Troubleshooting for SC 3xx errors related to charge output.
Troubleshooting for SC 4xx errors concerning image transfer.
Troubleshooting for SC 5xx errors related to motors and fusing.
Troubleshooting for SC 6xx communication and other errors.
Detailed list of error codes and their corresponding descriptions.
Explanation of fax error code structure for MF models.
Principles for clearing fax communication errors (RX/TX).
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