Unable to Print in Color

[Mr_Dennis]

I am servicing a M477fnw printer. I replaced the Intermediate Transfer Belt Assembly because it was giving the 59.F0 error. I installed a new ITB and updated the Controller Number to 15101 and downloaded the latest updates from the front display panel. Firmware date code is 20201022. I ran many copies and tests in color and b&w from the front display and my computer and all was well. The time was off so I went to the front display panel and set the date and time.

Now for some reason it will not print in color from either the front display or my computer. It will copy only in b&w also even though I select color copy. I have done a factory reset and a color calibration. Still no color output. It is blank where color should be. The toner cartridges are at least half full. I was able once to get it to print in color but now it is back to no color. Even the demo page from the front panel is all in b&w. Please help me get this printer to consistently print in color again.

[Mr_Dennis · Accepted solution]

Update: The problem was the Intermediate Transfer Belt assembly was not locked down properly. There are two white nylon leavers that have to lock into the ITB just right or it will not let thew paper contact the color cartridges to transfer toner. I had to "play" with these levers to get them to lock and stay in the upright position just like they were when I took out the old ITB. You sometimes wonder what the purpose of a part is and sometimes you find out the hard way.

Thanks to Caseycam's answer Posted on ‎09-20-2017 11:20 AM at https://h30434.www3.hp.com/t5/LaserJet-Printing/HP-Color-Laserjet-Enterprise-M552-does-not-print-col... for giving me a clue.

All is working great now!