Ricoh D027 Service Manual page 45

SC Tables
No. Type
Memory chip at TD sensor: Communication error
Retry of memory chip communication fails three times after the
machine has detected the memory chip communication error.
682 D
1.
No. Type
RFID: Unit check error
The machine gets RFID communication error even the toner cartridges
have not been installed in the machine.
683 B
Caused by noise
1.
No. Type
Memory address command error
The BICU does not receive a memory address command from the
controller 120 seconds after paper is in the position for registration.
687 D
1.
2.
3.
D027/D029 APPENDICES
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Damaged memory chip data
Disconnected inter face
No memory chip on the development unit
Noise
Replace the BICU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Turn the main power switch off and on.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Loose connection
Defective controller
Defective BICU
Check if the controller is firmly connected to the BICU.
Replace the controller.
Replace the BICU.
3-48 SM