Sc 6Xx (Communication And Other Error) - Ricoh M156 Service Manual


Defective fusing relay

Defective fusing relay circuit

Shorted +24V fuse on the PSU

Unstable power supply.
1. Check the power supply source.
2. Replace the +24V fuse on the PSU.
3. Replace the PSU
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

669 EEPROM not connected

Defective EEPROM
1. Installing the EEPROM.
2. Replacing the EEPROM.
SM 6-7
Service Call
M156/M157/M176/M177