F2-78 MXM565

[sharpie]

Where is the humidity sensor???

[ivan123]

I supposed on dv box
But F2-78 said image density sensor trouble


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[JLVisser]

It's attached to the inside frame of the main drive unit.

[ivan123]

It's attached to the inside frame of the main drive unit.

Confirmed


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[RascalMJ]

Was there a fix for this. Have a customer who is getting this error quite a bit. My info is that we have replaced several items/sensor (on the transfer, I believe), and even replaced the transfer.

I do not think we have addressed the sensor mentioned above, did that fix the issue?

[jp74msj55]

Humidity sensor # RDTCH0214FCPZ
Item # 3 Page 120 Parts book.
Try replacing and hopefully you should be good.

[RascalMJ]

Humidity sensor # RDTCH0214FCPZ
Item # 3 Page 120 Parts book.
Try replacing and hopefully you should be good.

THANKS!!!

That makes a lot of sense as this system is on a dock with the outside world always right around the corner. Luckily (sarcasm) they have 2 portable heaters to help keep them warm.

I could see this sensor causing some major issues in this environment.

[mojorolla]

F2-78 is a known issue with a retrofitted upper drum seal and a mylar cover for the image density sensor. Check that this sensor is not covered in sh%t, located right under the transfer roller. Fuser cleaning on this model sucks and these frequently get gunked up.

[RascalMJ]

F2-78 is a known issue with a retrofitted upper drum seal and a mylar cover for the image density sensor. Check that this sensor is not covered in sh%t, located right under the transfer roller. Fuser cleaning on this model sucks and these frequently get gunked up.

I believe that sensor is the one was replaced, but thanks so much for the detailed info. Great to know why it mint be happening again.

Would a new process unit help with the retrofitted seal? Anything else to help for the future?

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[spanky]

See attached