Ricoh Aficio 220 - SC620: Communication Error between IOB and ADF

SERVICE CALL CONDITIONS
A265/A267 7-10 SM
SC590: Exhaust fan motor error
-Definition- [B]
The CPU detects an exhaust fan lock signal for more than 3.5 seconds.
- Possible causes -
•
Poor connection of the exhaust fan motor
•
Too much load on the motor drive
SC610: Communication error between IOB and duplex unit
-Definition- [B’]
The IOB cannot communicate with the duplex unit properly.
- Possible causes -
•
Poor connection between the IOB and duplex unit
•
IOB defective
•
Duplex control board defective
SC620: Communication error between IOB and ADF
Definition: [B]
The IOB cannot receive a response from the ADF main board for 4 seconds or
more.
Possible Causes:
•
Poor connection between the IOB and ADF main board (DF connector)
•
ADF main board defective
•
IOB defective
SC691: Communication error between BICU and fax controller
-Definition- [B]
The BICU board cannot communicate with the fax controller properly.
- Possible causes -
•
Poor connection between the BICU board and the fax controller
•
BICU board defective
•
Fax controller defective