Kyocera TASKalfa 2551ci Color Multifunction Colour Printer. Error code 7104?

Question edited for clarity.
Question moved to maker category.

Toner Sensor Error. Information and Service Manual below, Page 44 refers.

Error Codes > Kyocera > TASKalfa 2550ci > Code 7104

PrintCopy .info
https://printcopy.info > code=7104
Code: 7104; Description: Toner sensor Y error. The sensor outputs are for 5 seconds, 23 or less, or 248 or more. Causes: Defective Developer unit.

Error Codes > Kyocera > TASKalfa 2552ci > Code C7104

PrintCopy .info
https://printcopy.info > code=C7104
Code: C7104 · Description: T/C sensor Y error Object: Color models · Causes: For the specified value of the initial toner stored in the EEPROM of the developer ...

TaskAlfa 250Ci C7102 - C7103 - C7104 Error Codes

Copytechnet.com
https://www.copytechnet.com > kyocera-utax-copystar
Jun 14, 2012 - With the new motor it changed to C7103, it think. The secondary problem was that while the color developing units were not agitating, the toner ...
Missing: 2551ci ‎' Show results with: 2551ci

Kyocera TASKAlfa ci Reset Error Service Call

YouTube · COPY-EXPERT by Tomasz Jemio?ek
83.6K+ views · 5 years ago
5:30
Kyocera Taskalfa 6500i error c3060 code solution How To Finish error ... How To Clear Time for maintenance (A) on KYOCERA TaskAlfa 2551ci, 3551ci, ...

KYOCERA TASKALFA 2551CI SERVICE MANUAL Pdf ...

ManualsLib
https://www.manualslib.com > ... > TASKalfa 2551ci
... 7104 Toner sensor Y error 7401 Developer unit K type mis- match error ... error code table: Encrypted transmission Error code Description U04400 U04401...