COMMON ISSUES HP LASERJET 4000, 4050 4100

    (2) Replace the Laser scanner   If the light prints continue, the proceed to step 3.
    (1) Turn Economode off, if the printer shows the Economode on.  If the light prints persist go to step 2.
Issue:
The printer will  print a page  with the image or characters are light.  

Solution: 
Light Prints

    (3) Replace DC Controller 


41.3 Error (False)
Description:
The printer will begin to print the print job.  After printing 1 page the printer will stop and produce an error 41.3

Cause:
The 41.3  is a error cuased by the printer believing the page (paper) printed is different size from what the     printer settings are set to.  Either the page is longer or shorter.

Solution: 
    (1) Replace the Feed / Separation rollers.  Word rollers can cause the printer timning to slow down.
    (2) Verify the size detection switch
    (3) Replace Feed Controller PCB
 

41.5 Error  / Blank Page
Dscription:
The printer will print a blank page and stop and display in control panel a service error 41.5

Solution: 
    (1) Verify the Pick Roller on the paper casstte tray.  Make sure roller is seated correctly.
    (2) Replace the Paper Feed Assembly
    (3) Replace the Registration Assembly

Toner rubs off on Labels printed. 
Description
After a lable is printed.  You can rub the ink off the paper.  The toner does not fuser correctly.  

Solution: 
    (1) from the rpinter menu scroll down to Paper Handleing.
    (2) Scroll down to tray 1 type and chnage to label.
    (3) Scroll down to Configure Fuser Mode Menu to (Yes) and after in submenu change the setting for label to     (High)