Konica-Minolta bizhub C364e

Error Code:

Code: C2555
Description: Abnormally low toner density detected yellow TCR sensor
When sampling data is determined in TC ratio calculation control, TCR sensor output is higher than a predetermined value for a predetermined number of times in a row even though there is toner in the sub hopper
Remedy: 1 Perform image troubleshooting procedure if image density is low. 2 Reinstall developing unit. 3 Reinstall toner cartridge. 4 Check the connector between developing unit-FRB CN13, CN14, CN15, CN16 for proper connection and correct as necessary. 5 Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. 6 M10 operation check M10 PRCB CN14-13 to 16 20-C 7 M6, M7. M8, M9 operation check PRCB CN14-13 to 16 (M6) PRCB CN14-9 to 12 (M7) PRCB CN14-5 to 8 (M8) PRCB CN14-1 to 4 (M9) 19 to 20-C. 8 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 9 Replace the developing unit - - 10 Replace FRB. 11 PRCB ICP21, ICP40, ICP41, ICP44, ICP46 conduction check. 12 Replace PRCB.

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