Canon i-sensy MF 628 CW not printing black

[Memiş Kağan Altunsoy]

hi all,
i have canon i sensys mf 628 cw,
all toner brand new and tested other printer working perfect.
ıtb is cleaned.
laser mirrors are cleaned.
firmware updated.
hard reset is okay.
all functions working well.
My printer not printing black when toner is full.
do you have and advise?
if anybody got service manual, send to me?
thank you all.

[bobburnsreb]

Here ya go!

Color_imageCLASS_MF628Cw_MF624Cw_SM_rev3_181015.pdf

[Memiş Kağan Altunsoy]

still same.