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Also could be a Lens out of position

Sometimes it could be an adf sensor, check them!!!

First of all......Firmware up to date, then....if you have the same issue, dissasembly the panel, clean touch panel and it´s plane cable contacts, or change control panel.

The problem is the reverse solenoid, part of the maintenance kit (200k yield) (fuser kit), change it, it will solve your problem

Saw that a few times.....reload Fiery System software

Check 7-403 for internal errors. Could be cleaning web motor, or corona cleaner motor.

One of the gear of the toner motor is broken.....

In Lexmark , not only one board Backups adjustments and counters....if you change controller board (only could be a new one) other boards restore all the information in the new board.
If you want a...

Clean, inspect the contact between drum shaft ass´y and the electrode plate........

Reglanet, PM me and tell me who is trying to sell this machines, and sure i can tell you what they are doing....30 years working in this country.

Reglanet....If you are not trained in this train, sure (Like Maradadona says) L.T.A....if you are Aregentinian sure you will understand...for others ...it´s like a not good idea deals with this...

Always clean the sensors located in paper feed....it´s a common failure in that model

Nv-Ram

Do you have in 7-403 other SC´s with the same counter? The laser unit is new or it belongs to other machine?

Could be pressure roller...

work with a lot of them....they are excellent, no toner or units failures....they run like Forest Gump!! jajaja

First I´ll clean imaging units....then try to replace with oem toner and take some sky shot to "wash" the bad toner...if that doesn´t seem to work....then change developer

That´s a Fuji Box.....color Boxes don´t like compatible consumables!!

Also, take out the PSU, and clean the connector that goes into main board assý, sometimes one of the pins are blacked with carbon, making electrical noise & malfunctions in other boards

Sorry....but....what machine are you talking about??

To avoid this....we put some extra silicone oil in cleaning webs....seems to be Ricoh i´ts saving money putting less silicone oil in their rolls, that´s why the hot roller works too dry.....when we...

Check: Drum earth contacts, erase lamp, charge or bias boards, magnetic roller...

Sometimes is the gear located at one side of the orange roller.....the correct position of this gear is separated of the roller, not touching the roller side.

If all firmware is up to date.....replace in this order :controller memory....hdd ... system sd card.

Anyone using aftermarket toners have the same trouble?? If yes....we can point to a developer failure....if not....could be the european toner... here we´re using 6110d usa toner without any kind of...