There have been few cases of a grinding noise in the fuser area or back of the printer. This symptom is similar to the swing plate assembly grinding on the LJ 4250/4350 series, but this is not a swing plate as it does not have the ability to dis-engage the fuser, this is classified simply as a fuser drive assembly. Fig1.
Most instances the fuser is replaced only to find the printer still having the same sound or even a louder grinding sound with the new fuser gears not completely meshing with the printers worn drive gears.
The P4000 series (P4014, P4015, and P4515) service manual does not list an actual part number for this assembly but it can be purchased through Laser Pros International via part number: P4015-FDA.
The repair procedure is very similar to replacing the swing plate on the LJ4250/4350 series where all covers and power supply must be removed (see service manual) however the P4014-FDA has the addition of a 4th screw (yippee) on the top end of the assembly (fig1 red callout) that requires removal of a metal guide from the bottom of the laser scanner cross member (2 screws from each front and back side) as shown: fig2. and fig3.
This Tech Tip is contributed by Laser Pros (www.laserpros.com). Email any questions to marketing@laserpros.com.
