SOURCE: Hp LJ 4345 mfp vertical line down printed copies
Dirt.
Open the ADF, the top of the scanner/copier.
The ADF glass is the thin strip of glass on the left. Damp cloth with windex or any glass cleaner. Scrub the strip of glass.
SOURCE: SCANNER ERROR 12
it is a physical brocken piece that supports scanner mechanism.
if you open that plate /scanner mechanism and if you drill that plastic sheet and try some manufactureed alluminium or metal projection and place it in the hole drilled by you and put washer and screew so that that supports ;the scanner mechanism and your scanner /printer works . the scanner mechanism may costs you around 3,000-00 rupees.
SOURCE: Printer Model : HP Laser
indicate that the scanner unit are error.reseat the flexible cable in the scanner unit.
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