e studio 4511 only copies prints in yellow...............

[Ducttape n Glue]

...........it will copy and print fine in black, but make a full color copy and not even the black shows up, only yellow................????????

[Mr Spock]

check/replace the transfer belt cleaning clutch. It has been taken apart and put back together 180 degrees out.

[ToshibaTech]

Never seen that but that's one to remember!

[Lepricon]

Change your cleaning blade for Transfer belt - it's curved and stays in contact with the belt all the time -when install the new one apply some powder on the belt to prevent new cleaning blade to stick to the belt. (Usually happen few days-weeks after PM).100% accurate.

[Mr Spock]

Never seen that but that's one to remember!

I did this the first couple of times I worked on this machine. The clutch was sticking and I took it apart to clean and during reassembly I put the clutch spring in the wrong hole and had this symptom.

[Ducttape n Glue]

Has a new TB blade and we cleaned and tried the clutch in both direction.............no change whatsoever...........

[Travis06]

Are you watching it run with the receiving tray off? It puts yellow down last, so something is cleaning the other colors off the belt.

I just watched the delivery guys push two more of these off the shipping docks today. (no chance of salesman putting them back in the field)

[Mr Spock]

Has a new TB blade and we cleaned and tried the clutch in both direction.............no change whatsoever...........

It is the spring inside the clutch or the support arms on the cleaning unit could also be out from where needed. Watch it run (inside cover off) the blade should cam away from the belt while the image is being formed and cam to the belt when the print is sent to paper to clean the belt. Either the clutch is bad, the cam arms are in the wrong position or something else in the cleaning blade assembly is out of time causing the issue.

[Lepricon]

Has a new TB blade and we cleaned and tried the clutch in both direction.............no change whatsoever...........

Even if the cleaning blade is new it could be curved or something happened with the blade holder or the pushing mechanism (clutch / cam) and as a result the blade is in permanent contact with the belt. We use to have at one moment around 80 copiers of this models on the field and stepped into this problem several times. Every time was related to cleaning of the belt. Thanks GOD we have only 7 left - soon to be replaced as well.

[tinnyjay]

Open the copier,remove toners,developers,drum,corona,black developer assy,transfer belt and just "wash" your machine and all this parts except drum.If you remove all this parts,its better to remove fuser and to clean the fuser belt.
I am sure if one of this parts is old,or damaged you will not have a yellow print.
I am experienced with that kind of copiers (e-studio 3511/4511) and 75% of their problems are depended on cleaning.

[jamesyboy]

this is correct spock

I must whole heartdly agree with mr spock its the clutch on the trans cln unit ,have found anyone that takes one apart is wasting time and money just replace the clutch mate if you take them apart they will never be the same

replace it its a 5min job

[Mr Spock]

I normally do replace them I just did not have one and figured I would try to clean in it. Cleaning it actually worked but that spring was a pain.

[Ducttape n Glue]

Ok, we tried all the cleaning and blade replacement and 180out, I will have him change the clutch and get back to you.

[Ducttape n Glue]

Ok, we tried all the cleaning and blade replacement and 180out, I will have him change the clutch and get back to you.

Ok, got a new clutch , installed, cleaned TB sensor, all better!! Thank you all for the help!!