I'm having a similar reoccurring C2557 issue as previously posted here:http://www.copytechnet.com/forums/ko...-new-post.html . Only it's on a C458.
The customer accidentally popped off the shutter on the black toner before replacing it and the issues have snowballed since then. We easily diagnosed the toner bottle issue and simply reinstalled the toner shutter and force toned the machine to address the initial 2557 code. A few days latter the code came back. I took the machine apart and removed the hopper to inspect it. All of the gears were turning freely. After reinstalling the hopper, I forced toned the machine again and watched the toner bottles turn and the black toner motor run successfully. Code came back so I replaced the DV thinking that the TCR sensor was acting up. Code came back.
Everything works, but the machine has to be told to add black toner. It won't do it on its own and eventually triggers the C2557 code. Today, after code triggered again I inspected the toner float mechanism as mentioned on this post. Float was attached to the post but I knocked it off trying to test it's movement. I removed the hopper again and repositioned the plug that the float mounts on and confirmed proper up and down motion. I can see how this system is supposed to work now, but I have no idea why it's not working? Maybe the sensor that is used to read the position of the float is bad? Anyway, we've ordered a whole hopper assembly. If that doesn't fix it I don't know what will.
Any thoughts???
The customer accidentally popped off the shutter on the black toner before replacing it and the issues have snowballed since then. We easily diagnosed the toner bottle issue and simply reinstalled the toner shutter and force toned the machine to address the initial 2557 code. A few days latter the code came back. I took the machine apart and removed the hopper to inspect it. All of the gears were turning freely. After reinstalling the hopper, I forced toned the machine again and watched the toner bottles turn and the black toner motor run successfully. Code came back so I replaced the DV thinking that the TCR sensor was acting up. Code came back.
Everything works, but the machine has to be told to add black toner. It won't do it on its own and eventually triggers the C2557 code. Today, after code triggered again I inspected the toner float mechanism as mentioned on this post. Float was attached to the post but I knocked it off trying to test it's movement. I removed the hopper again and repositioned the plug that the float mounts on and confirmed proper up and down motion. I can see how this system is supposed to work now, but I have no idea why it's not working? Maybe the sensor that is used to read the position of the float is bad? Anyway, we've ordered a whole hopper assembly. If that doesn't fix it I don't know what will.
Any thoughts???
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