Aficio 650 become blur after 2000 cps

[petrus]

my problem is,this model have a lot of case after 2k-5k cps print out become blur, i've change the TD and ID sensor but still the same.
When I do force toner supply, then its back to normal.
thats mean nothing wrong with the machanical system.
If any body out there have an idea please help me.

thanks

[Polo-022]

Toner dispensing holes are clogged. Clean or replace the toner dispensing assy.

[petrus]

Toner dispensing holes are clogged. Clean or replace the toner dispensing assy.

on this area its not the problem.I have change the assembly but still the same -I mean the toner holder & toner sub hopper.

if anyone can give me suggestion?