Sc 6Xx (Communication And Other Error) - Ricoh RN-MF2 Field Service Manual

Fuser 3times jam error
The paper jam counter for the fusing unit reaches 3. The paper jam counter is cleared if the
paper is fed correctly.
This SC is activated only when this function is enabled with "Engine Maintenance" (default
"OFF").
• Defective fusing unit
559
• Defective fusing control
1. Clear this SC to send a command after a jam removal.
2. Turn off this function after a jam removal.
• Execute "Fuser SC Reset" to recover the machine after completing the recovery
procedure. Otherwise, the machine continues to issue this SC code and cannot be
operated.

SC 6xx (Communication and Other Error)

EEPROM communication error
An unexpected value exists in the initialization flag of the EEPROM
• EEPROM not connected
669
• Defective EEPROM
1. Installing the EEPROM.
2. Replacing the EEPROM.
CTL_PRREQ_N signal does not come.
The ECB does not receive a memory address command from the controller 20 seconds after
paper is in the position for registration.
688
• Defective controller board
• Communication error
1. Turn the machine's main power off, and then on.
2. Check if the controller board is firmly connected to the ECB.
Service Call Conditions
141