MY HP 8500A HAS STARTED PRINTING WHOLE PAGE BARCODE LOOKING LINES WHEN I PRINT OR COPY IN BLACK. COLOR LOOKS GREAT. IVE CLEANED THE PRINT HEADS AND ALIGNED THEM. ANY OTHER OPTIONS? THANKS

Solution one: Reset the product If there is static interference, or loose connections with the product, this can result in bands or lines in the copy, fax, or scan output. To resolve this issue, check the product connections and reset the product Press the Power button ( ) to turn on the product.Disconnect the power cord from the rear of the product.Unplug the power cord from the wall outlet.Wait 30 seconds.Plug the power cord back into the wall outlet. Reconnect the power cord to the rear of the product.Press the Power utton ( ) to turn on the product.Try to copy, fax, or scan again.If these steps resolved the issue , you do not need to continue troubleshooting.If the issue persists , continue to the next solution.
Solution two: Clean the scanner glass and scanner lid If the scanner glass or the white underside of the lid has fingerprints, smudges, lint, dust, or other debris, this can slow performance and affect copy and scan quality. To resolve this issue, clean the product.Before you begin, gather the following materials:Several clean, soft, lint-free cloths

Mild glass cleaner
CAUTION: Use only glass cleaner to clean the scanner glass. Do not use cleaners that contain abrasives, acetone, benzene, or carbon tetrachloride. These substances can damage the product. Avoid isopropyl alcohol (rubbing alcohol) because it can leave streaks on the glass.

1. Press the Power buMY HP 8500A HAS STARTED - c01602202.gifc="/uploads/images/c01602202.gif" alt="c01602202.gif" class="h_mi" /> ) to turn off the product.
2. Disconnect the power cord from the rear of the product.
3. Lift the scanner lid. Figure 3: Lift the scanner lid
   
4. Spray a clean, soft, lint-free cloth with mild glass cleaner.
   CAUTION: To protect the scanner, do not spray the glass cleaner directly on the glass.
5. Clean the scanner glass with the lint-free cloth. Figure 4: The scanner glass
   
6. Clean the glass strip next to the scanner glass with the lint-free cloth. Figure 5: The glass strip
   
7. Dry the scanner glass and the glass strip thoroughly with a clean, dry cloth or chamois to prevent spotting, and then dry the white underside of the scanner lid.
   NOTE: Do not use paper-based wipes or tissues that can leave fiber residue.
8. Clean the white underside of the scanner lid. Figure 6: The underside of the scanner lid
   
9. Close the scanner lid.
10. Reconnect the power cord to the rear of the product.
11. If the product does not turn on by MY HP 8500A HAS STARTED - c01602202.gif the Power button ( ) to turn it on.
12. Try to copy, fax, or scan again.

• If these steps resolved the issue , you do not need to continue troubleshooting.
• If the issue persists , continue to the next solution.

1. Gather the following materials:
   • A clean, lint-free cloth, or any cloth that will not come apart or leave fibers
   • Distilled, filtered, or bottled water (tap water might damage the product)
2. Remove any documents from the document feedMY HP 8500A HAS STARTED - c01602202.gif
3. Press the Power button ( ) to turn off the product.
4. Disconnect the power cord from the rear of the product.
5. Lift the cover of the ADF until it stops. Figure 7: Lift the ADF cover
   
6. Find the pick rollers and separator pad. Figure 8: Locations of the pick rollers and separator padLightly dampen a clean lint-free cloth with distilled or bottled water, and then squeeze any excess liquid from the cloth.
7. Use the damp cloth to wipe any residue off the separator pad.