HP LaserJet 1160, 1320, Service Manual

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Cleaning the printer

Clean the outside of the printer with a clean, damp cloth when necessary.

WARNING! Before cleaning the printer, turn the printer off, unplug the power cord, and wait for the printer to cool.

CAUTION

Do not use ammonia-basedcleaners on or around the printer.

Cleaning the print-cartridgearea

During the printing process, paper, toner, and dust particles can accumulate inside the printer. Over time, this buildup can cause print-qualityproblems, such as toner specks or smearing, and jams. To correct and prevent these types of problems, you can clean the printcartridge area and the printer media path.

You do not have to clean the print-cartridgearea often. However, cleaning this area can improve the quality of your printed sheets.

1. Open the print-cartridgedoor, and remove the print cartridge.

CAUTION

To prevent damage, do not expose the print cartridge to light. Cover the print cartridge to

 

shield it from light. Also, do not touch the black sponge transfer roller inside the printer.

 

Touching the roller can damage the printer.

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2.Using a dry, lint-freecloth, wipe any residue from the media path area and the print cartridge cavity.

3. Replace the print cartridge, and close the print-cartridgedoor.

4. Plug the power cord into the printer and then turn on the printer.

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NOTE

NOTE

Cleaning the printer media path

If you are experiencing toner specks or dots on the printouts, clean the printer media path. This process uses a transparency to remove dust and toner from the media path. Do not use bond or rough paper.

For best results use a sheet of transparency. If you do not have any transparencies, you can use copier grade paper (70 to 90 g/m2 [ (18 to 24 lb)]) that has a smooth surface.

1.Make sure that the printer is idle and the Ready light is on.

2.Load the transparency in the input tray.

3.Print a cleaning page by using one of the following methods:

Open the HP Toolbox. See Using the HP Toolbox for instructions. Click theTroubleshooting tab, and clickPrint Quality Tools. Select the cleaning page.

On the printer control panel, press and hold the GO button until all three lights illuminate (about 10 seconds). When all three lights illuminate, release theGO button.

The cleaning process takes approximately two minutes. The cleaning page stops periodically during the cleaning process. Do not turn the printer off until the cleaning process has finished. You might have to repeat the cleaning process several times to thoroughly clean the printer.

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Changing the pickup roller

 

Normal use with good media causes wear. The use of poor media might require more

 

frequent replacement of the pickup roller.

 

If the printer regularly mispicks (no media feeds through), you might need to change or clean

 

the pickup roller. See Ordering parts and supplies to order a new pickup roller.

 

Failure to complete this procedure might damage the printer.

CAUTION

 

1. Turn off the printer, unplug the power cord from the printer, and then allow the printer to

 

cool.

2. Open the print-cartridgedoor, and remove the print cartridge.

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3. Remove tray 2.

4.Open the front automatic two-sided-printingpath door (HP LaserJet 1320 Series printer only).

5. Place the printer on the work surface with the front of the printer facing up.

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6. Pull the white tabs outward, and rotate the tabs up.

7. Slide the right tab to the right, and leave the tab in this position throughout the procedure.

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8. Slide the pickup roller assembly to the right, and remove the left end cap.

9. Remove the pickup roller.

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10.Insert the left side of the new pickup roller into the left slot (1), and insert the right side (with notches in the shaft) into the right slot (2).

11.Rotate the shaft until the notches engage and the shaft clicks into place.

12.Place the end cap over the shaft on the left side, push the end cap to the right, and rotate the tab downward into position.

13.Push the right tab to the left, and rotate the tab downward into position.

14.Place the printer on the work surface with the top of the printer facing up.

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15. Close the front automatic two-sided-printingpath door.

16. Reinstall the print cartridge, and close the print-cartridgedoor.

17. Plug the power cord into the printer and then turn on the printer.

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Cleaning the pickup roller

If you want to clean the pickup roller rather than replace it, follow these instructions:

1.Remove the pickup roller as described in steps 1 through 9 of Changing the pickup roller.

2.Dab a lint-freecloth in water, and scrub the roller.

3. Using a dry, lint-freecloth, wipe the pickup roller to remove loosened dirt.

4.Allow the pickup roller to dry completely before you reinstall it in the printer (see steps 10 through 17 of Changing the pickup roller).

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