Cleaning the HP All-in-One

Exterior
Use a soft cloth lightly moistened with water to wipe the exterior case, keypad, and control panel. A mild detergent may be used for more stubborn stains.
NOTE: Purified or distilled water is recommended.
Scanner glass and white scan backing
If you have any of the following symptoms, the scanner glass or white backing may need cleaning:
  • Black spots or lines appear in copies and/or faxes.
  • Replace scanner cover error message on the front panel display.
  • Special copy features such as Clone do not work correctly.
The scanner-glass position and size will depend on the product.
  • Scroll-fed products have a narrow glass strip located under the front panel (see Figure 1) or under the scanner cover (see Figure 2).
  • Flatbed products have a large scanner glass under the top cover.
    NOTE: You cannot clean the underneath side of the scanner glass on any all-in-one. This should be performed only by an authorized service provider.
Figure 1: Scanner glass under front panel

Figure 2: Scanner glass under scanner cover

NOTE: The HP Officejet K and Fax 1200 series do not have a scanner glass. Go to the next section below to clean the white reference strip.
Clean the glass using a soft, lint-free cloth lightly moistened with a non-abrasive glass cleaner.
NOTE: Do not spray fluids directly on the HP product. Spray the fluid on the cloth used for cleaning. Fluids may damage the electrical circuits.
Cleaning the white reference strip or pad
After cleaning the glass, it is important to clean the white scan backing or reference strip.
The reference strip or scan backing is used to calibrate the scanner mechanism and provides a white background when scanning. It must be clean and white for proper calibration and operation.
For scroll fed all-in-ones
The reference strip is a narrow white strip located on the bottom of the scanner cover (see Figure 3) or under the front panel (see Figure 4), depending on the product. It sits directly over the scanner glass when the scanner cover is inserted or the front panel is closed.
For flatbed all-in-ones
The white reference is the large white area under the document (top) cover.
Clean the white reference strip using a soft, lint-free cloth lightly moistened with a non-abrasive glass cleaner.
NOTE: Do not spray fluids directly on the HP product. Spray the fluid on the cloth used for cleaning. Fluids may damage the electrical circuits.
Figure 3: White reference strip on the scanner cover

Figure 4: White reference strip under the front panel

Rollers
Clean the rollers if the paper fails to feed smoothly into the unit. Clean them with a lint-free cloth lightly moistened with water.
NOTE: Purified or distilled water is recommended for cleaning the rollers.
Refer to the images below for the information on locating the rollers.
CAUTION: Turn off the unit and unplug the power cord from the back of the unit and the power outlet before cleaning the rollers.

(Source-HP) For more information on different styles of printer, visit the HP website at that link.

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