Sc 6Xx (Communication And Other Error) - Ricoh M116 Service Manual

Service Call Conditions

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.
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.
M116/M117 6-8 SM