c 220 blank page developer dumping

[jackson007]

dear,
plz give me solution for my costomers bh c220 problem.i.e.
developer k,m,c is cominig on print.only y print is coming in test page.others are blank or background is coming.plz give me solution.only y is image forming,no other images are not forming.

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[blackcat4866]

How many clicks on your developing units? =^..^=

[tedy]

Pls check diveloper unit or transfer charger

[tedy]

Pls check diveloper unit or transfer charger pul out springs

[service_man]

Hello,
The toner is Original, or For Use?

1. If use non after original toner, non original, the mix in developer unit is out of control. TCR Sensor register from 6.xx % to 0.xx % and supplying toner, and developer is coming in waste toner box.

2. HV board



regards