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There is no 1 part that deals with this issue i'm afraid. The copy from the glass uses all the boards in the same path that a print uses. It definately rules out the machine fault. I would guess that the machine isn't set up properly to receive these fierys. Just make sure all connections are secure, if not try other cables.
the only thing apart from software corruption is that you could try printing a configuration sheet. If this prints then black printing is working. If it won't then print a test page then you need composite patch 1-7QU5B.ps from the xerox "drivers and downloads" site. If none of this works it is a software reload.
I am to take it that the Platen cover is missing? If this is the case what you need is Ledger (11x17) or just bigger, bright white paper. Make sure that you use about 6-8 sheets (stacked) on to of each other. Place your color calibration test page on the glass and then lay the sheets over the calibration sheet. This should work as well as the platen white back.
do an emergency stop on the machine as the paper is just coming into the main path, and you will catch the inage on the IBT. with a bit of luck on the drum as well. Is it not in 1 colour the white lines? Also are they thick or pencil like lines and from lead edge to trail edge?
i had similar problem a week ago running black only job on extra heavy card stock. there is black toner built up. when you run black only copy with little toner use, it builds up toner in black developer and motor could not run. always mix black and color jobs and run alternate, so there is no excesses in any color. or cheaper way how i did without paying color clicks. i got rid of excess black in following manner. took 11x17 white sheet, copied as negative (solid black) and ran 30-50 black copies, which drained all excess black and then continued with job. hope it works for you or get professional help or you will lose motherboard and motor if you just follow instruction as it tells you on error screen... switch off and switch on. do not keep on repeating.
Epson 777 will not print. No paper jam. Power light flashing; red error light on steady. Paper does not feed; if paper supply is placed deeper in feed, entire paper supply (about 12 sheets) feeds thru as one sheet normally would , without printing.
NOTE: The problem occurs because of the trickle development system in the machine, making extended lengths of black and white copies / prints does not allow the black developer housing to purge itself of excess waste Toner (Dry Ink) and Developer. There are two solutions for the problem:
Make 1,000 copies / prints of a black and white job, then make 150 copies / prints of full color. Continue making 1,000 copies / prints of the black and white job, then 150 full color, and so on, until the entire black and white job is complete.
Make extended jobs in groups of 100 by making 100 copies / prints of the black and white job, then allowing the machine to cycle down (return to 'Ready') and making the next 100 copies / prints. Continue in this pattern until the entire black and white job is complete.
NOTE: The above solutions are based on jobs using 8.5 x 11 inch paper, single sided, with no more than 28% coverage.
9-357. Black toner problem.Probably You have low toner sensor defect. But try first to vacuum and clean black toner dispenser.You must vacuum whole path wich is used to transport black toner to developer unit.Then if printing B/W print only, you must print 10 full color sheets every 100 copies.