kyocera taskalfa 3550ci - black dots in the prints

[Phil B.]

I agree that it's probably the charge roller. But I don't have an engineering degree so take it with a grain of salt.

knowing the way most senior techs feel about engineers ( at least the copier design engineers ) that is more than likely a PLUS in the win column for you!

glad to have you on board here.

[changer74]

again .. forget the degrees, please .. I have many colleagues who not know how to hang a nail on the wall, figure if you tell him to open a photocopier :-)

[changer74]

One info, in part list catalog (I have 2011 part list catalog) the code it's MC-8505 and not MC-8720 ...but it's same piece ?


My machine was product in AUGUST 2012 - machine no. N2k2804117- CODE no. 1102LN3NL0


I enclose some photos of when I detached and cleaning the developer unit and drum unit

[BillyCarpenter]

It appears to me that you're attempting to find the problem by checking/cleaning everything in the machine. That's really not a good method. I mean, you may end up and finding the problem that way but you're taking the long road. What I would do is swap the black charge roller with the yellow charge roller and see if the the black dots are now yellow. Let us know.

[BillyCarpenter]

One info, in part list catalog (I have 2011 part list catalog) the code it's MC-8505 and not MC-8720 ...but it's same piece ?


My machine was product in AUGUST 2012 - machine no. N2k2804117- CODE no. 1102LN3NL0


I enclose some photos of when I detached and cleaning the developer unit and drum unit

Here's the part you're looking for:


Kyocera TASKalfa 3551ci Main Charge Assembly, Genuine (K1379)

[changer74]

It appears to me that you're attempting to find the problem by checking/cleaning everything in the machine. That's really not a good method. I mean, you may end up and finding the problem that way but you're taking the long road. What I would do is swap the black charge roller with the yellow charge roller and see if the the black dots are now yellow. Let us know.

the photos I posted are from a few days ago, when I disassembled the machine to clean it, before writing in the fourm, I know very well that there is the problem, now I have to order the spare parts because here ( italy-Sardinia) there isnt nothing.

Excellent idea to swap the rollers, I could do it (waiting for the replacement) with the yellow color that for now it no has problems ... the black stains all my prints ... tonight I do. thanks: D

[BillyCarpenter]

Just be careful taking stuff apart. You have no experience and it's easy to introduce a problem to the machine that wasn't there when you started. Good luck.

[Scott]

90% of all call backs are created by the technician, BE CAREFUL

[changer74]

I made the change, I put the yellow roller in place of the black .... now the dots come out yellow .. so I confirmed that the problem is the rubber loading rollers which have small depressions. I overlapped the sheet and the position of the printed dots also coincides with the depressions of the rollers. Now at least if I print in black and white the print is clean

[mga]

I made the change, I put the yellow roller in place of the black .... now the dots come out yellow .. so I confirmed that the problem is the rubber loading rollers which have small depressions. I overlapped the sheet and the position of the printed dots also coincides with the depressions of the rollers. Now at least if I print in black and white the print is clean

Well done