MP 9003 lite copies

[Joe Foe from Buffalo]

Looking for words of wisdom on cause. MP 9300 lite,grey copies, prints. Before I touched it has a history of same from previous techs. I replaced developer no luck. Unable to set td sensor. Click on this for details

https://photos.app.goo.gl/qctHH1ocMGRNiZbM8

[Luism]

Hello, you're missing digits in the developer serial number (you can fill it with zeros), which is why the developer won't start.
Regards

[slimslob]

If it was just copying I would say dirty optics. Since it is printing also, most likely a dirty or bad ID sensor. If by TD sensor you actually mean the ID sensor, SP 3001, then a dirty sensor will cause a reading considerably greater than 70. The dirtier the sensor, the higher the reading. The higher the reading, the lighter the print. If there is a lot of toner on the PCU frame the sensor is mounted on you may need to replace the cleaning brush. I have also seen the opening through the front of the PCU housing clog.

[luca72]

Hello, you're missing digits in the developer serial number (you can fill it with zeros), which is why the developer won't start.
Regards

yes, actually you can write whatever you want, I write some swear words....since nobody sees it
strange, I see that the "check" sign at the bottom is red, and the front door is open

[Javad]

Hello, for sp2801, set all 7 digits to 1 and start. Check if the numbers for sp2201 are normal or not. If your income is weak, turn off sp3901.