Question about HP Color LaserJet 8550 Printer
We just picked up a used HP 8550 and the print quality looks like it has a tie dye effect. Do we need to replace a part?
Posted by Anonymous on
This is often caused by the TRANSFER DRUM having deteriorated and become 'bumpy, or 'dimpled' - take you pick depending on how YOURS looks. This causes incomplete contact with the Photo-conductor drum, and as a result doesn't lift all the image off it.
The only solution is to fit a replacement TRANSFER KIT.
I have also seen NEW 'old stock' transfer drums, straight out of the box like this, so its obviously an 'aging problem' with that component.
Also seen it in a very low count printer that was in storage, unused for over 3 years.
Posted on Nov 24, 2015
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Posted on Jan 02, 2017
SOURCE: Pale print on PDF files
It sounds like a driver problem. Try replacing the driver for this printer on the printers folder, using the HP LaserJet Series II. With this driver, try again the PDF file and see if it prints correctly.
Posted on Jul 27, 2007
SOURCE: print head failures HP 1050c
the tube system has an air leak causing a dryfire situation. air + printheads = damaged printheads. most users replace the black printhead more often than the colors. the seal where the printhead feed pin fits into the carriage is the end of the tube system. the hole in the seal becomes to large and doesn't properly seal the air out. order the tube system. complete and concise instructions are included in the box for tube replacement. this is considered an end user replaceable part. good luck! please rate this!
Posted on Oct 02, 2008
1 Open the right upper door.
Sensor is located on the door lower center of door ther should be a small brush next to it
2 Use the brush located next to the sensor to remove all toner
particles from the sensor.
Posted on Mar 04, 2009
I identified this issue with my Officejet 6110xi All-in-One as firmware corruption. Attempting to install the supplied firmware update gave the error that "no hp device connected to the computer would benefit from it at this time." Attempted to power down the printer using #9 keystroke and got "FULL RESET" message, but problem of extremely slow printing and erratic behavior of the print heads persisted. I solved the problem by putting the printer outside in cold weather for two (2) days. This frequently resets firmwares with software corruption back to their embedded EEPROM state. Hooked the printer back up and worked fine. If cold weather is not available you could try other creative methods of cooling the device, just use a plastic bag and with ideally some drying packets thrown in to prevent excessive moisture buildup in the cold environment. The colder it is the faster the firmware resets.
-Paul Ronco, Computer Technician
Posted on Jan 25, 2010
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