HP LaserJet 4p Printer "51 error" Questions

error 51 HP 4Plus laserjet printer just stopped and error 51 appeared cartridge replaced replaced repair kit Hello sir; 51 often in this model, change laser assembly( C2037-69008 ). next tryDC ...

...of copy then printer shows me 51 error, what is this and how can i solve it ? Error 51 (beam detect error) Trouble shooting suggestions: Check seating on laser/scanner assembly Replace scanner ...

51 printer error, cycle power" What does that mean? I'm not able to use this printer. I get the above msg. or a page of just black toner filled paper. Thanks for any help. cycle power means to turn it

...error code 51.2. What part do I need and is it something I can do myself after receiving the part? ...

error code 51.22 The 51.xx error occurs when there is an error in connection with the laser, if you open the printer to clean the lens, surely you have forgotten to replace the cable connection purple

Error 51 appears on the display. After several on/off the power boton printer to work, but it gives error 51 again sometimes. The laser PCA is bad. I removed it and the printer functioned. I thank you

error code 51 and 21 on the printer. I I have error code 51 and 21 on the hp 4700 color printer. I restarted the machine and it would work for a while and error code came up again. What is the fix? 21

...error 51 23 in the screen of the printer. When i put the power off, after ON, i h ave the same error 51 23 who return 51.23 Error-yellow scanner error Turn off the power by using the power switch, ...

...error codes (51.20 51.21 51.22 51.23) points to a failure with one of the laser scanner assemblies on the HP Color LaserJet 4610 an 4650 series. To solve these error codes, replace the corresponding ...

hp laserjet 3600n error 51:22 err0r 51:22