HP LaserJet 1020 Printer "error cartidge door" Questions

Error message coming up: The HP LaserJet 1020 has the front cover door open or the toner cartidge is missing... Door is closed and toner cartridge is in there!! HELP!! send your printer for service. ...

...cartidge and insert it back while looking on the lever movements.... and you ll get whats the matter with it.. PLEASE note it,,, that i think,, the sensors are NEVER damaged !!! mind it.....my ...

Error - "Close cartidge access door" I keep getting "Door Open, Close cartridge acess door" error. Where is the sensor for the door? By a door edge or on a hong extentionLook for a wire going to the ...

error (ch) CH steady means cover is open. Close either front or right cover well. CH blinking means developer unit or toner cartridge not installed. Remove and return well and firmly. CH cover open or

...cartidge is installed! The ok button on the touchscreen also doesn't seem to register and I get an error message that says that the door is opened when it is not. Help! plz ask your vendor for ...

door just above the paper tray. Pull out the old cartidge, hold it so you can see the way it is inserted and click in gently in the same way. I cannot remove the cartridges to my 5610 officejet all in

error once, got to align cartidge option, ran alignment, alignment failed then cartridge error came back. Remove all the cartridges, clean the contact points on the cartridges and on the printer using

error message remain It sounds like you are replacing the toner cartidges NOT the Drum Unit. Drum is located behind the toner cartidge and you will see it after removing toner. Pretty common mistake :

...error ''print cartridge missing or not detected'' have shut down restarted, replaced cartridge cleaned. HP looks to block recycled cartridge. Pls advise work around hi steve... the solution to your ...