SHARP

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REGULAR MAINTENANCE

To ensure that the machine continues to provide top quality performance, periodically clean the machine.

Warning

Do not use a flammable spray to clean the machine. If gas from the spray comes in contact with hot electrical components or the fusing unit inside the machine, fire or electrical shock may result.

Caution

  • Do not use thinner, benzene, or similar volatile cleaning agents to clean the machine. These may degrade or discolour the housing.
  • Use a soft cloth to gently wipe off dirt from the area on the operation panel with a mirror-like finish (shown at right). If you use a stiff cloth or rub hard, the surface may be damaged.

CLEANING THE DOCUMENT GLASS AND AUTOMATIC DOCUMENT FEEDER

If the document glass or document backplate sheet becomes dirty, the dirt will appear as dirty spots, coloured lines, or white lines in the scanned image. Keep these parts clean at all times.
Wipe the parts with a clean, soft cloth.
If necessary, moisten the cloth with water or a small amount of neutral detergent. After that, wipe with a clean dry cloth.
Examples of lines in the image

Document glass

Document backplate sheet

SCANNING AREA

If black lines or white lines appear in images scanned using the automatic document feeder, clean the scanning area(the thin long glass next to the document glass).
To clean this part, use the glass cleaner that is stored in the automatic document feeder. After using the glass cleaner, be sure to return it to its storage position.

Open the automatic document feeder and remove the glass cleaner.

Clean the document scanning area on the document glass with the glass cleaner.

One scanning area is on the document glass and the other is inside the automatic document feeder.

Open the scanning area cover on the automatic document feeder.

Push in the release switch to release the cover.

Clean the scanning area in the automatic document feeder.

Close the cover.

Replace the glass cleaner.

CLEANING THE LASER UNIT

When the laser unit inside the machine becomes dirty, line patterns (coloured lines) may form in the printed image.
Identifying lines (coloured lines) caused by a dirty laser unit

  • Coloured lines always appear in the same place. (The lines are never black.)
  • Coloured lines appear in parallel with the direction of paper feeding.
  • Coloured lines appear not only on output from a copier but also on prints from a computer. (The same lines appear on both copies and print jobs.)
If conditions similar to the above occur, clean the laser unit as explained below.

Open the front cover.

Take out the cleaning tool for the laser unit.

The cleaning tool is attached to the front cover of the machine.
  1. Push the left-hand side of the cleaning tool to detach it from the hook.
  2. Put it over the hook to place in on the back side.
  3. Turn the cleaning tool around the boss to detach it from the right-hand hook.

Make sure that the cleaner at the tip of the cleaning tool is not dirty.

If the cleaner is dirty, remove the cleaner from the cleaning tool and replace it with a clean one. For more information on replacing the cleaner, see "REPLACING THE CLEANER (page 1-79)".

Point the cleaner down and slowly insert the tool into the hole to be cleaned in the laser unit.

Be sure to point the cleaner down. Labels similar to (A) are attached to areas that require cleaning.

Insert the cleaning tool all the way into the hole and then pull it back out.

Pull the cleaning tool out until you feel the tip of the tool leave the cleaning surface of the laser unit.

Repeat steps 4 to 5 two or three times and then remove the cleaning tool.

Repeat steps 4 to 6 to clean all holes (4 holes) in the laser unit.

There are a total of four holes to be cleaned in the laser unit. Clean all holes.

Replace the cleaning tool.

  1. Engage the cleaning tool onto the boss and turn it around it, and then put the edge (non-cleaner side) on the right-hand hook.
  2. Put the left-hand side of the cleaning tool over the hook to place it on the near side.
  3. Turn the cleaning tool onto hook.

Close the front cover.

REPLACING THE CLEANER

Open the front cover and take out a replacement cleaner.

Replacement cleaners are stored in the front cover.
Grasp the end of the cleaner and pull it out of the cover.

Remove the dirty cleaner from the tip of the cleaning tool.

While firmly grasping the tool where the cleaner is attached, use your other hand to press down on the hook that secures the cleaner, and remove the cleaner.

Caution

Put the removed cleaner back on the inner cover. After replacing the cleaner, be sure to close the inner cover.

Attach the new cleaner to the cleaning tool.

Align the cleaner hook with the attachment hole in the cleaning tool. Hold the cleaner firmly and push the cleaning tool in.

CLEANING THE BYPASS FEED ROLLER

If paper misfeed frequently occur in the bypass tray, clean the bypass feed roller. Wipe the surface of the feed roller with a clean soft cloth moistened with water or a neutral detergent.

Bypass tray (on the machine)

Remove paper.

Remove the maintenance cover.

Clean the bypass feed roller.

Install the maintenance cover after the cleaning is completed.

Load the paper.

Bypass tray (large capacity trays)

Press the operation button and remove paper.

The paper table goes down. The operation button blinks while the paper table goes down. The button lights up when the paper table has gone down. Do not remove the paper until the button ceases blinking.

Remove the maintenance cover.

Clean the bypass feed roller.

Install the maintenance cover after the cleaning is completed.

Load the paper and press the operation button.

The paper table goes up when the operation button is pressed.

CLEANING THE PAPER FEED ROLLER

When using the automatic document feeder, if the placed original is smudged or jammed, wipe the surface of the paper feed roller in the direction of the arrow with a clean, soft cloth moistened with water or a neutral detergent.

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Version 03a / bp90c80_usr_03a_en

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