Canon IR2520 print test no result on paper (white blank)

[Bimarizky0112]

Hallo !!
I've a problem with my canon ir2520, when I test print out on report settings, no toner came out at all, only blank white paper came out. I've try to replace the laser unit, developing, drum unit, dc control but nothing the problem is still the same, last I replace the mainboard and yes the problem solved, that I want to ask is about electrical(electronics) what components should I replace on mainboard? or which part should I test using an avo meter (for example) to find out which voltage is flowing accordingly or not, cause I want to try to fix it.
Thanks.

[zoraldinho]

We usually do not repair the motherboards but replace them.If board have only poorly soldering, you can heat the oven as a pizza and burn your motherboard for 2 minutes.