Ricoh sc681-14 | how to fix sc681-14 | ricoh error mpc3504, mpc4505, mpc5504, mpc6004 | easy way

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Device ID is not identified (PCDU) / Toner
Causes:
An error is notified during the ID identification after three retries. 681-14
yellow PCDU ID Chip error | yellow toner ID Chip error
Remedy:
• Turn the main power OFF and then ON.
* clean the toner ID chip
• Replace the PCDU (ID chip)
* Replace yellow toner ID chip or New Toner bottle
sc681-14 of mpc3001, mpc5501, mpc3002, mpc3502, mpc3003, mpc3503, mpc4502, mpc5502, mpc4503, mpc5503, mpc6003, mp6002, mp7502, mp8001, mpc3504, mpc4504, mpc5504, mpc5504, mpc6004, mpc3004, Imc5500, imc6000, imc400