HP 3748 manual Manually cleaning print cartridges, Gathering cleaning supplies, Preparing to clean

HP Deskjet 3740 series printer

9.4 Manually cleaning print cartridges

If the printer is used in a dusty environment, a small amount of debris might accumulate inside the case. This debris can include dust, hair, carpet, or clothing fibers. When debris gets on the print cartridges and cradle, ink streaks and smudges might appear on printed pages. Ink streaking is easily corrected by manually cleaning the cartridges and cradle.

Gathering cleaning supplies

You will need the following items to clean the print cartridges and cradle.

•Distilled water

•Cotton swabs or other soft, lint-free material that will not stick to the cartridges

Be careful not to get ink on your hands or clothing as you clean.

Preparing to clean

1.Press the Power button to turn on the printer, and then raise the printer cover. The cradle moves to the center of the printer.

2.Disconnect the power cord form the back of the printer.

3.Remove the print cartridges and place them on a piece of paper with the nozzle plate facing up.

1. Nozzle plate

Caution: Do not leave the print cartridges outside the printer for more than 30 minutes.

Cleaning instructions

1.Lightly moisten a cotton swab with distilled water and squeeze any excess water from the swab.

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