Ricoh G188 Service Manual page 336

Service Call Conditions
No. Type
RFID: Communication error
681 D
1.
2.
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
Replace the PCU.
No. Type
683 B RFID: Unit check error
The machine gets RFID communication error even the toner cartridges
have not been installed in the machine.
Caused by noise
G188/G189
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Communication error occurs when the RFID starts to communicate
with the RFID receptor.
Retry of RFID communication fails three times after the machine
has detected the RFID communication error.
Defective RFID reader and writer
Disconnected ASAP I/F
No memory chip on the toner cartridge
Noise
Replace the RFID controller board.
Replace the toner cartridge.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Damaged memory chip data
Disconnected inter face
No memory chip on the development unit
Noise
Details (Symptom, Possible Cause, Troubleshooting Procedures)
3-40 SM Appendix