HP LaserJet 1160, 1320, Service Manual

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Table 7-8.Solving printimage-qualityproblems (continued)

Large amounts of toner are scattered around the characters.

Cause

Solution

The media is resisting the toner.

1.Use a different media. Make sure that the media meets specifications detailed in the

HP LaserJet Printer Family Media Guide.

2.Turn the stack of media over and put it back in the tray.

3.Use media that is designed for laser printers.

Droplets of water are deposited on the trailing edge

Cause

Moisture in the printer is condensing on the fuser assembly and dropping onto the media. In excessively hot and humid areas, media retains moisture.

Solution

Try a different media.

Store media in airtight containers to minimize absorption of moisture.

NOTE

Water droplets do not damage the printer.

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Clearing jams

NOTE

CAUTION

Occasionally, media becomes jammed during a print job. You are notified of a media jam by an error in the software and the printer control panel lights. See Status light patterns for more information.

The following are some of the causes of media jams:

The input trays are loaded improperly or too full.

When you add new media, always remove all of the media from the input tray and straighten the stack of new media. This helps prevent multiple sheets of media from feeding through the printer at one time, reducing media jams.

The media does not meet HP specifications.

The printer might need to be cleaned to remove paper dust and other particles from the paper path. See Cleaning the printer for instructions.

There might be loose toner in the printer after a media jam. This toner clears up after a few sheets print.

Media jams might result in loose toner on the page. If you get any toner on your clothes, wash them in cold water. Hot water permanently sets toner into fabric.

 

Print-cartridgearea

 

To clear a jam in the print-cartridgearea, perform the following steps:

 

Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage

CAUTION

 

caused by sharp objects is not covered by the warranty.

 

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

CAUTION

To prevent damage to the print cartridge, minimize its exposure to direct light.

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2. Open the straight-throughoutput door.

 

3. Rotate the green pressure release levers downward.

 

Severe damage to the printer can result from failure to rotate the pressure release levers.

CAUTION

 

Such damage is not covered under the printer warranty.

4.With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer.

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

 

Input trays

 

To clear a jam in the input trays, perform the following steps:

 

Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage

CAUTION

 

caused by sharp objects is not covered by the warranty.

 

1. Open the straight-throughoutput door.

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2. Rotate the green pressure release levers downward.

 

Severe damage to the printer can result from failure to rotate the pressure release levers.

CAUTION

 

Such damage is not covered under the printer warranty.

3. Open the single-sheetpriority input slot (tray 1) door.

4.With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer.

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5. Close the single-sheetpriority input slot (tray 1) door.

6. Open the main input tray (tray 2).

7.With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer.

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8.If no media is visible, open the print-cartridgedoor, remove the print cartridge, and rotate the upper media guide. Carefully pull the media up and out of the printer.

9. Close the main input tray (tray 2).

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CAUTION

CAUTION

Output bin

Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage caused by sharp objects is not covered by the warranty.

With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer.

Straight-throughoutput path

To clear a jam in the straight-throughoutput path, perform the following steps:

Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage caused by sharp objects is not covered by the warranty.

1. Open the straight-throughoutput door.

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CAUTION

NOTE

NOTE

2. Rotate the green pressure release levers downward.

Severe damage to the printer can result from failure to rotate the pressure release levers. Such damage is not covered under the printer warranty.

3.With both hands, grasp the side of the media that is most visible (this includes the middle), and carefully pull it free from the printer.

If you cannot grasp the media with your hands, perform the procedure in Print-cartridge area. 4. Close thestraight-throughoutput door.

The pressure release levers automatically close when you close the straight-throughoutput door.

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Automatic two-sidedprinting (duplexing) path

 

To clear a jam in the automatic two-sidedpath, perform the following steps:

 

Do not use sharp objects, such as tweezers or needlenose pliers, to remove jams. Damage

CAUTION

 

caused by sharp objects is not covered by the warranty.

 

1. Open the straight-throughoutput door.

 

2. Rotate the green pressure release levers downward.

 

Severe damage to the printer can result from failure to rotate the pressure release levers.

CAUTION

 

Such damage is not covered under the printer warranty.

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