New HP cartridge in my laserjet 2300 results in faded and/or blank portions on a page that otherwise looks fine. Tried cleaning the paper path as recommended, and that didn't help.

That sounds like maybe a printer cartridge problem. Perhaps the ink flow is not working properly.

Clean all rubber rollers in paper path.

Clean all of the rubber feeders with alcohol/rubber restorer in the paper path of printer.

Hi devi960:
Pages print, but all
colors do not print or
the pages are
completely blank.
One of the print cartridges might be
low or empty.
Run an engine test and see if all four colors print. If
not all colors print, replace one or more of the print cartridges. If the
engine test is successful, replace the formatter.
If the printed pages are completely
blank, the file might have blank
pages.
Check the file to make sure that it does not contain blank pages.
A print cartridge might be low or
empty.
Check the printer control panel for a Supplies Status message,
print a Supplies Status page, or use the embedded Web server
(HP color LaserJet 2500 series printers only) to see the levels
remaining in the print cartridges. Replace any print cartridges that
are low or empty. Messages are not created for non-HP print
cartridges.
If you are using non-HP print
cartridges, one or more print
cartridges are low or empty. The
control panel lights do not indicate
low or empty for non-HP print
cartridges.
Replace one or more of the print cartridges.
Font DIMM might be selected but the
font DIMM is not physically installed in
the printer. (This issue applies only to
HP color LaserJet 2500 series
printers using an Asian-language font
DIMM.)
In the settings for this printer, clear the Font DIMM check box on
the Configure tab if no font DIMM is installed in the printer. Select
the Font DIMM check box only if the font DIMM is physically
installed in the printer. If you think that the font DIMM is installed,
make sure that it is installed correctly.
The paper curls when
exiting the top output
bin.
The paper needs to print to the
straight-through paper path.
Open the rear output door to print to the straight-through paper
path. Remove each sheet as it exits the printer.
The stack was slightly curled when it
was placed in the tray.
Turn the stack over in the tray.
The paper does not meet
specifications.
See the user guide for information about print-media specifications.
If you are printing on light media, the
Type setting might not be correct.
Select Light in the Type is field in the printer driver.

HP has a list of troubleshooting steps you can go through for the HP 2605dn when you experience print quality issues.

Two specific things I would try from that list are:

1. Clean the electrostatic transfer belt.
2. Clean the printer paper path.

Good Luck!

*If you find the solution helpful, please rate it!*

I would start by changing the paper or even leave the paper in the son for a while. Paper usually gets damp, espesially durint the evening and then using it early in the moring. If this do not work you will have to change the cartridge.

The HP site suggests replacing the toner cartridge.
This is an excellent, by the way, which has very good troubleshooting ditections
www.hp.com

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=238800&prodTypeId=18972&objectID=c00001617 the HP site for your printer Over time, particles of toner and paper accumulate inside the HP LaserJet 2300 series printer. This can cause print-quality problems during printing. Cleaning the printer eliminates or reduces these problems. Clean the paper path and print-cartridge areas every time that the print cartridge is changed or whenever print-quality problems occur. As much as possible, keep the printer from dust and debris. Cleaning the outsideback to top of page Clean the outside of the printer with a cloth that has been dampened with water. NOTE: Do not use ammonia-based cleaners on or around the printer. Cleaning the paper path and print-cartridge areasback to top of page Over time, particles of toner and paper accumulate inside the printer. This can cause print-quality problems during printing. Cleaning the printer eliminates or reduces these problems. Use the following steps to clean the paper path and print-cartridge areas: 1. Turn the printer off and unplug the power cord. 2. Open the top cover. Figure 1: Top cover opened example 3. Remove the print cartridge. Figure 2: Print cartridge removed example CAUTION: To prevent damage to the print cartridge, do not expose it to light for more than a few minutes.Be careful not to touch the transfer roller (the black, rubber roller located underneath the print cartridge). Skin oils on the roller can cause print-quality problems. 4. With a dry, lint-free cloth, wipe any residue from the paper path area and the print cartridge cavity. Make sure not to touch the transfer roller with fingers, as the oil can contaminate the roller, resulting in print quality defects. Figure 3: Paper path area and print cartridge cavity example 5. Reinstall the print cartridge and close the top cover. Figure 4: Print cartridge reinstalled example NOTE: If the print cartridge is difficult to reinstall, make sure that the registration plate has been flipped back down into position and that the print cartridge is pushed firmly in place. 6. Plug in the power cable and turn on the printer. Cleaning the fuserback to top of page Run the printer cleaning page to keep the fuser free of toner and paper particles that can sometimes accumulate. Accumulation of toner and particles can cause specks to appear on the front or back side of print jobs. To ensure optimum print quality, HP recommends using the cleaning page every time that the print cartridge is replaced or on an automatic pre-established interval. The cleaning procedure takes about 2.5 minutes to complete. A message (either CREATING CLEANING PAGE or CLEANING) appears on the printer control panel display while the cleaning is taking place. NOTE: Use plain paper to print the cleaning page. Please note that this is a two-step process. First print out the cleaning page using the following directions, then follow the directions on the cleaning page itself to reinsert it back into the printer to perform the cleaning. Use the following steps to run the cleaning page: 1. If the printer model includes a duplexer, open the rear output bin. 2. Press example(Select button) to open the menus. 3. Use example (Up button) or example (Down button) to scroll to CONFIGURE DEVICE, and then press example (Select button). 4. Use example (Up button) or example (Down button) to scroll to PRINT QUALITY, and then press example (Select button). 5. Use example (Up button) or example (Down button) to scroll to CREATE CLEANING PAGE, and then press example (Select button). 6. Perform the following to complete the cleaning process. 1. Remove all paper from Tray 1. 2. Use example (Up button) or example (Down button) to scroll to CONFIGURE DEVICE and then press example (Select button). 3. Use example (Up button) or example (Down button) to scroll to PRINT QUALITY and then press example (Select button). 4. Use example (Up button) or example (Down button) to scroll to PROCESS CLEANING PAGE and then press example (Select button). 5. Load the cleaning page created in step 5 above into Tray 1 with the print side down and the arrow towards the printer. 7. If the printer model includes a duplexer, close the rear output bin. Let me know if that helped. Good luck, Tim

in my printer the resistor R348 on the motherboard printer was broken. The value that must have is 10 ohms. I have changed and the printer has resumed work.

When the paper is fresh out of the printer, does the ink that looks okay smudge if you rub it with your finger? If so, it means the fuser is going bad. Otherwise, it's probably a bad toner cartridge that's leaking toner onto the paper.