The page prints solid black.

If your document prints black, turn your printer off and on again. If your document still prints black your printer needs servicing.

Printer prints simplex even though duplex printing is specified.

If your document prints in simplex mode (only on one side) instead of duplex mode, check the following:

mIs the optional duplex printing unit installed?

mDoes the printer have at least 12 MB of memory?

mIs duplex printing selected in the Print dialog box?

Unwanted lines or stripes appear.

If white or dark vertical or horizontal lines or stripes appear on the page, try the following remedies. (Each procedure is described in detail in “Replacing the Toner Cartridge” in Chapter 11.)

mGently rock the cartridge to redistribute the toner.

mReplace the toner cartridge.

mClean the mirror by sliding the yellow plastic square back and forth to remove any toner residue.

The image is wavy or distorted.

If a gray shaded area appears wavy or distorted, the toner cartridge may be low, or the toner may need to be redistributed (see “Replacing the Toner Cartridge” in Chapter 11).

Toner smudges appear on front or back of paper.

If stains appear on the paper, try the following steps.

mToner smudges may occur after a paper jam. In most cases, the printer cleans itself after printing several letter-size pages.

mYou may have previously printed using paper that was too small for the printed document, which may have caused some toner to be deposited inside the printer instead of on the paper. This can cause smudges on the paper that goes through later. In most cases, the printer cleans itself after printing several letter-size pages.

Fixing Paper and Image Problems

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Apple 12/640PS manual Prints solid black, Unwanted lines or stripes appear, Image is wavy or distorted