mpc2051 and mpc2551 BCU board interchangeable?

[fshead]

hi
I am loading up some parts to remedy a faded black only CQ issue on a mpc2051.
I only have a mpc2551 parts unit now.
Can i interchange them?
thanks

[slimslob]

Part numbers are different.
D1065720 for the C2051
D1065725 for the C2551

[fshead]

thanks..
i gottA ck if the nvram is on the BCU brd..maybe thats why its different..
At this point if it is not any parts i have with me i am just swapping machine with a mpc2551 and
I will deal with it when i have time or just part it out..

[SargeNZ]

Check that the K transfer cam on the ITB is working properly.

[fshead]

Check that the K transfer cam on the ITB is working properly.

I found that only after pulling this machine and having another side by side that that k drum latch/cam that you rotate before reinstalling waste unit did not move the ITB cam.
I never thought that all 3 colors would work but not black or faint black copy.
I will pull that off and fix or replace it.
thanks

[slimslob]

I found that only after pulling this machine and having another side by side that that k drum latch/cam that you rotate before reinstalling waste unit did not move the ITB cam.
I never thought that all 3 colors would work but not black or faint black copy.
I will pull that off and fix or replace it.
thanks

The three color rollers are only lifted during color operation. No point in having the color drums and development units rotating if they are not going to be used.