10-08-2016 02:21 PM
My MX922 printer continues to print double lines in the PGBK nozzle check pattern even after a manual alignment. Is there anything I can do to correct this short of a new printer? thanks for your help....Ross
12-20-2020 05:08 AM
Maybe this is it:
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4. last but not least, a manual head alignment made again? Still no improvement?
Then you must assume that there is a defective electrolytic capacitor (capacitor) on the main board of the printer. This "manages" the electrical voltage that goes through the print head. Whereby the colored area (in your case BK + C + M + Y) and the PGBK head area are controlled separately. In any case, this capacitor no longer maintains the voltage correctly, causing these shifts in the vertical nozzle rows. This is basically a damage in the cent range, but very labor-intensive (printer would have to be disassembled, electrolytic capacitors would have to be measured and discharged, new ones would have to be soldered, and then everything would have to be reassembled) and is - basically - only to be done by a specialist... In this respect, an economic total loss remains.
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