Konica-Minolta bizhub C360

Error Code:

Code: C2553
Description: Abnormally low toner density detected magenta 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-FREYB CN4, CN6, CN8, CN10 for proper connection and correct as necessary. 5 Check the connector between FREYB CN1, CN2-PRCB CN4, CN5 for proper connection and correct as necessary. 6 M6, M7 operation check PRCB CN13-12 to 15 (M6) PRCB CN13-16 to 19 (M7) J-21 7 M8, M9 operation check PRCB CN12-9 to 12 (M8) PRCB CN12-13 to 16 (M9) J-10 8 If the toner empty sensor and its surroundings inside the sub hopper are dirtied with toner, clean them. 9 Change developing unit. 10 Change FREYB. 11 PRCB ICP3,4 conduction check. 12 Change PRCB.

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