Light Print – HP Laserjet 2100, 2200 , 2300 Printer Laser Repair

 

Light Print – HP Laserjet 2100, 2200 ,2300 Printer Laser Repair

Light print on the HP laserjet  2100, 2200 , and 2300 printer models has been a problem on theseHP laserjet 2100, 2200, 2300 light print machines for quite some time due to the age of the units. Majority of the time the light print  is found on the left side of the page but in extremely dirty enviroments  or areas of high people traffic it can be throughout the whole page. As with other small HP models the problem is usually a result of dust build up inside the laser unit on the four sided  motor mirrors. The motor has several mirrors on top of it that rotate at around 20,000 to 50,000 RPM’s depending on the machine print speeds. As the four sided  motor mirrors rotate the tend to attract dust and other debris around the edge of the mirrors.  The laser unit inside the assembly bounces off the mirrors and writes  to the drum. If the mirrors inside the laser  scanner are covered in dust the laser can’t pentrate  the dust build up on the mirrors and print quality is reduced.   Once you  clean off the mirrors inside the laser scanner assembl  you can restore  the print quality in your HP laserjet  2100, 2200, and 2300 printer and get rid of your light print problems  .

Troubleshooting light print  in a HP Laserjet  2100, 2200 , and 2300 Printer

I added more detail to the troubleshooting tips. Instead of making this article extremely long I decided to create a new article and link to it. Below is the updated article for further assistance on your light print issues.
Troubleshooting Light or Faded Print – HP Laserjet Printers

Laser Scanner Cleaning Procedure for Light Print on a HP Laserjet  2100, 2200  , 2300 Printer

I/O Cover Removal
Pushing the two tabs on the back of the I/O cover, swing the I/O cover

DIMM Cover Removal
1 Open the toner cartridge door.
2 Press and hold the release button
3 Grasp the rear of the cover and pull it away from the printer until it stops.
4 Grasp the front and rear of the cover and swing it out from the printer.

Back Cover Removal
1. Open the rear output bin and release the diverter pivot pins. Let the open door rest on the work surface.
2.  Remove the two mounting screws
3.  Raise the door to engage the retaining locking bar pivot pins and leave the door open.
4.  Unlatch the two rear cover retaining tabs located inside the tray 2 slide area.
5.  Pull the rear cover down and then out to remove it.
Note: 2100 Series does not have the diverter pivot pins.  The output bin  just folders down to a horizontal position

Top Cover Removal
1. Release the swing arm from the toner cartridge door and push it down into the opening.
2. Remove the top-cover mounting screws
3. With the rear of the printer facing forward as shown, remove the top-cover mounting screws.
4.  Open the tray 1 door.
5.  Release the two top cover tabs located on either side of the toner door.
6.  Lift the cover up and off the printer.
When replacing the top cover, make sure the drive release lever is attached to the swing arm. Use the longer of the four mounting screws in the mounting screw-holes located under the toner door.

Additional Parts that need Removed on the 2300 series.
Front cover
1. Open the top door.
2.  Open tray 1.
3.  Remove two screws from the front cover.
4.  Lift the cover straight up and away from the printer.

Control panel
1.  Remove three screws from the control panel.
2.  Disconnect one connector.
3.  Lift the control panel away from the printer.

Laser Scanner Unit Removal
I’m not going to get into a bunch of detail here because  they are all a little different. If you want to remove the laser scanner then unplug the cables going in or out of the unit. Remember as always be carefull with the flex cables. Four screws secure it in place on the corners. Remove those and pull it out. If you feel like leaving it in then just remove the cables if the go over the top cover of the laser scanner. Remove the one or two screws and unclip the four clips securing it in place.

Cleaning the Laser Scanner Unit on the HP Laserjet 2100, 2200 , 2300  Printer

If the laser scanner is relatively clean inside then I would just clean the front mirror shown in the picture below and the motor mirrors located in the bottom of the unit on top the motor. Use a Q-tip to clean the mirrors. If you see any build up on the Q-tip get a new one before proceeding to the next mirror. The most important thing here is to take your time and be gentle. The motor mirrors are metal and extremely delicate. They are very easy to scratch. You should notice before you clean the units a build up of dust and debris on the mirrors. Especially on the left side of the motor mirrors. If the unit is very dirty inside then I would clean all the mirrors and lens inside the unit and blow it out before I put it back together.

HP Laerjet 2100, 2200, 2300 laser scanner cleaning

Conclusion about Light Print in the HP Laserjet  2100, 2200 , 2300 Printer Repair

The light print problem in the HP laserjet  2100, 2200 , 2300 is becoming a more common issue as these machines age. Hopefully the article above will help you troubleshoot and diagnose your problem so you can resolve your light print issue in your HP laserjet 2100, 2200 , 2300 printer and get your machine up and running without any further print quality problems.


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