Here is what I found for the code:
E021-0001. The developing rotary HP failed to be detected.
There is a fault in the developing rotary HP sensor or the wiring of the DC controller PCB. Or the motor rotates outs of sync because of poor torque by excess load on the developing assembly.
Clean the HP sensor. After replacing, turn off and then on the main power.
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When I was running a job, it was printing in color. Then mid-run, the color dropped out and it printed in B&W. Then after a few copies in B&W, it was just outputting blank pages. I replaced the HP sensor - no effect. I even replaced the entire developer rotary assembly with a spare and I get the same error. When the machine is turned on, I can tell that the sequence of the startup is not what it should be. Then I get the error code. I tried to Part-Check the motor #4 for the developer assembly, but I think since the machine did not start up, the part checks are not working. I even tried some of the fans that I know work and I get NG! after the part check. This has been one of the more challenging things for me on this machine. Any thoughts? Possibly the motor or perhaps some gear that is wearing out?
E021-0001. The developing rotary HP failed to be detected.
There is a fault in the developing rotary HP sensor or the wiring of the DC controller PCB. Or the motor rotates outs of sync because of poor torque by excess load on the developing assembly.
Clean the HP sensor. After replacing, turn off and then on the main power.
------
When I was running a job, it was printing in color. Then mid-run, the color dropped out and it printed in B&W. Then after a few copies in B&W, it was just outputting blank pages. I replaced the HP sensor - no effect. I even replaced the entire developer rotary assembly with a spare and I get the same error. When the machine is turned on, I can tell that the sequence of the startup is not what it should be. Then I get the error code. I tried to Part-Check the motor #4 for the developer assembly, but I think since the machine did not start up, the part checks are not working. I even tried some of the fans that I know work and I get NG! after the part check. This has been one of the more challenging things for me on this machine. Any thoughts? Possibly the motor or perhaps some gear that is wearing out?
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