[H-01] If the Alarm Indicator Turns On

If a problem occurs in the printer and the printer cannot operate properly, the Alarm indicator on the control panel turns on.
The following service message appears in the Printer Status window.
There are three types of service messages. If a service message appears, perform the following procedure.
NOTE
If the Printer Status Window is not displayed

"Displaying the Printer Status Window"
Turn off the printer.
If a fixing unit error is displayed, go to Step 5.

If a service error or scanner error is displayed, wait at least 10 seconds, and then turn on the printer.

If the message does not reappear, the printer is ready.
If the warning message reappears
  • If a service error is displayed, go to Step 3.
  • If a scanner error is displayed, go to Step 4.

If a service error is displayed, write down the error code displayed in the Printer Status Window.
NOTE
If the Printer Status Window is not displayed

"Displaying the Printer Status Window"

Turn off the printer.


Disconnect all cables and cords.
  1. Turn off your computer.
  2. Disconnect all interface cables.
  3. Unplug the power cord from the AC power outlet.

Contact your local authorized Canon dealer.
If a service error is displayed, please report the problem and the error code.
NOTE
If you are not sure what the problem is

Contact your local authorized Canon dealer.

[H-02] If the Alarm Indicator Is Blinking

If a printer error occurs and measures are required, the Alarm indicator (orange) blinks on the control panel of the printer and a service message similar to the one shown below appears in the Printer Status Window.
Alarm indicator (orange)
Example of the service message in the Printer Status Window
If an error message appears, take the measures described in the Printer Status Window.
NOTE
If the Printer Status Window is not displayed

"Displaying the Printer Status Window"

[H-03] Paper Jams

If a paper jam occurs inside the printer, find the location of the paper jam and remove the jammed paper.

Finding the Location of the Paper Jam

The messages displayed in the Printer Status Window indicate where the paper is jammed.

Locations of possible paper jams
  1. Manual Feed Slot
  2. Paper Cassette
  3. Rear Cover
  4. Output Area
NOTE
If the Printer Status Window is not displayed

If a paper jam occurs but no message appears, use the following procedure to display the Printer Status Window.
  1. Click the icon of the printer () in the taskbar.
  2. Select [Canon LBP5050].
Configuring the Printer Status Window to be displayed automatically when an error occurs

"Configuring the Printer Status Window Display and Monitoring Settings"

Clearing the Paper Jam

Use the message to check the location of the paper jam, and then remove the jammed paper.

Paper Jam in the Manual Feed Slot

Remove the paper cassette.
Gently pull out the paper cassette with both hands.

Open the manual feed slot cover.

Lower the manual transfer guide.

Remove the jammed paper by pulling it in the direction of the arrow.

Return the manual transfer guide to its original position.

Close the manual feed slot.

Insert the paper cassette into the printer.
Push the paper cassette into the printer firmly until it is all the way in.
CAUTION
Precautions when inserting the paper cassette

When inserting the paper cassette, be careful not to catch your fingers.

Perform either of the following operations to enable printing.

  • Open and close the front cover.
  • Turn off the printer, wait at least 10 seconds, and then turn on the printer.

Paper Jam in the Paper Cassette

Remove the paper cassette.
Gently pull out the paper cassette with both hands.

Remove the jammed paper by pulling it in the direction of the arrow.
IMPORTANT
If the jammed paper cannot be removed easily

Open the rear cover and remove the jammed paper.
Do not try to forcefully remove the jammed paper as this can cause the feeder rollers to come off.
Do not touch the feed rollers, as this can result in damage to the printer or malfunction.

Insert the paper cassette into the printer.
Push the paper cassette into the printer firmly until it is all the way in.
CAUTION
Precautions when inserting the paper cassette

When inserting the paper cassette, be careful not to catch your fingers.

Perform either of the following operations to enable printing.
  • Open and close the front cover.
  • Turn off the printer, wait at least 10 seconds, and then turn on the printer.

Paper Jam Inside the Rear Cover

Open the rear cover.

Remove the jammed paper by pulling it in the direction of the arrow.
CAUTION
Do not touch the area surrounding the fixing unit

The area surrounding the fixing unit is hot during printer operation.
When removing jammed paper, be careful not to touch the area surrounding the fixing unit, as this may result in burns.

Close the rear cover.


Perform either of the following operations to enable printing.
  • Open and close the front cover.
  • Turn off the printer, wait at least 10 seconds, and then turn on the printer.

Paper Jam in the Output Area

Open the rear cover.

Remove the jammed paper by pulling it in the direction of the arrow.
IMPORTANT
If the jammed paper cannot be removed easily

Turn off the printer, and then remove the jammed paper. Turn on the printer after removing the jammed paper.

Close the rear cover.


Perform either of the following operations to enable printing.

  • Open and close the front cover.
  • Turn off the printer, wait at least 10 seconds, and then turn on the printer.

Precautions When Removing Jammed Paper

WARNING
Be careful not to allow jewelry or other metal objects to touch the inside of the printer.

Some areas inside the printer are subject to high voltage. If metal objects touch the inside of the printer, this may result in a fire or electrical shock.
CAUTION
Precautions when clearing a paper jam

  • Make sure that the fixing unit is completely cool before removing the jammed paper. Touching the fixing unit when it is still hot may result in burns.
  • The output slot is hot during and immediately after printing. Do not touch the area surrounding the output slot, as this may result in burns.
  • Printed paper may be hot immediately after being output. Be careful when removing the paper and aligning the removed paper, as this may result in burns.
  • Be careful not to get any toner on your hands or clothing.
  • If toner gets on your hands or clothing, wash them immediately with cold water. Washing with warm water sets the toner, making it impossible to remove the toner stains.
  • When removing jammed paper, be careful not to allow the toner on the paper to scatter.
  • If toner scatters and gets into your eyes or mouth, wash them immediately with cold water and consult a physician.
  • When removing jammed paper, be careful not to cut your hands with the edges of the paper.
  • Keep your hands and clothing away from the roller in the output area.
    The roller may suddenly rotate and catch your hands or clothing, resulting in personal injury.
IMPORTANT
Precautions when operating the printer

  • Leave the printer on when removing the jammed paper.
  • Turning off the printer deletes the data being printed.
  • Removing jammed paper with excess force may cause the paper to tear or damage the inside of the printer.
    Pull out the jammed paper in the direction indicated.
  • If the paper is torn, remove all remaining pieces of paper.
  • After the jammed paper is cleared, the next printed paper may have toner smudge marks.
  • Do not touch the high-voltage contacts (A) indicated in the diagram, as this may result in damage to the printer.
  • Do not touch the transfer roller (B), as this may result in deterioration in print quality.
  • The area surrounding the output tray is hot during and immediately after printing. Do not touch the area surrounding the output tray when removing paper or clearing a paper jam.

[H-04] Print Quality Problems

If a print quality problem occurs, you can use the measures indicated in this section to try to solve the problem.
NOTE
Contacting your local authorized Canon dealer

If a problem that is not indicated in this section occurs, if none of the suggested measures solve the problem, or if you cannot determine the problem, contact your local authorized Canon dealer.

Paper is output in a certain color with nothing printed on it.

Cause 1: The drum in a toner cartridge has deteriorated.

Solution: Replace with a new toner cartridge.
"Replacing Toner Cartridges"

Cause 2: A problem occurred inside the printer.

Solution 1: If a service message is displayed in the Printer Status Window, turn off the printer, wait at least 10 seconds, and then turn on the printer. This may clear the message.
Solution 2: If the message is still displayed after performing Solution 1, contact your local authorized Canon dealer.
"If the Alarm Indicator Turns On"

White streaks appear.

Cause: The drum in a toner cartridge has deteriorated.

Solution: Replace with a new toner cartridge.
"Replacing Toner Cartridges"

Printed pages have white specks.

Cause 1: You are not using appropriate paper.

Solution: Replace with paper that meets printing specifications.
"Paper Requirements"

Cause 2: The paper is moist.

Solution: Replace with new paper.
"Paper Requirements"

Cause 3: The drum in a toner cartridge has deteriorated.

Solution: Replace with a new toner cartridge.
"Replacing Toner Cartridges"


Residual images appear on non-printed areas.

Cause 1: You are not using appropriate paper.

Solution: Change the paper.
"Paper Requirements"

Cause 2: Because of the printing pattern or type of paper, when continuously printing, images from two pages prior are printed faintly.

Solution 1: Set [Special Print Mode] to [Special Settings 10] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 10] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
Solution 2: If Solution 1 does not solve the problem, perform ITB cleaning from the Printer Status Window.
  1. Click the icon of the printer () in the taskbar.
  2. Select [Canon LBP5050].
  3. Click [Options] → [Device Settings] → [Assisting Print Settings].
  4. Select the [Clean Every 2 Sheets in Continuous Print] check box.
  5. If this solves the problem, clear the [Clean Every 2 Sheets in Continuous Print] check box.
Cause 3: The drum in a toner cartridge has deteriorated.

Solution: Replace with a new toner cartridge.
"Replacing Toner Cartridges"

Cause 4: Because of the printing pattern or type of paper, residual images appear on the same sheet of paper.

Solution: Setting [Special Print Mode] to [Special Settings 6] on the printing preferences dialog box may solve this problem.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 6] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
IMPORTANT
Precautions when setting [Special Settings 6]

If setting [Special Print Mode] to [Special Settings 6] does not solve the problem, set [Special Print Mode] to [Off] and set [Paper Type] as follows.
However, the toner may not fix onto paper well, and the printing may come out faint.
  • If [Paper Type] was set to [Plain Paper], set it to [Plain Paper L].
  • If [Paper Type] was set to [Heavy Paper 1], set it to [Plain Paper].
  • If [Paper Type] was set to [Heavy Paper 2], set it to [Heavy Paper 1].
  • If [Paper Type] was set to [Envelope H], set it to [Envelope].
  • If [Paper Type] was set to [Coated Paper 2], set it to [Coated Paper 1].
  • If [Paper Type] was set to [Coated Paper 3], set it to [Coated Paper 2].
  • If [Paper Type] was set to [Coated Paper 4], set it to [Coated Paper 3].

The paper is wrinkled.

Cause: Because of the type of paper or operating environment (especially high humidity or high temperature), the paper may become wrinkled.

Solution: Setting [Special Print Mode] to [Special Settings 6] on the printing preferences dialog box may solve this problem.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 6] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
IMPORTANT
Precautions when configuring [Special Settings 6]

If setting [Special Print Mode] to [Special Settings 6] does not solve the problem, set [Special Print Mode] to [Off] and set [Paper Type] as follows.
However, the toner may not fix onto paper well, and the printing may come out faint.
  • If [Paper Type] was set to [Plain Paper], set it to [Plain Paper L].
  • If [Paper Type] was set to [Heavy Paper 1], set it to [Plain Paper].
  • If [Paper Type] was set to [Heavy Paper 2], set it to [Heavy Paper 1].
  • If [Paper Type] was set to [Envelope H], set it to [Envelope].
  • If [Paper Type] was set to [Coated Paper 2], set it to [Coated Paper 1].
  • If [Paper Type] was set to [Coated Paper 3], set it to [Coated Paper 2].
  • If [Paper Type] was set to [Coated Paper 4], set it to [Coated Paper 3].

The overall print result is faint.

Cause 1: The packing material was not removed from the transfer roller when the printer was installed.

Solution: Remove the packing material on both sides of the transfer roller.
"Moving the Printer Unit to the Installation Site"

Cause 2: The [Toner Density] setting is not appropriate.

Solution: Adjust [Toner Density] on the printing preferences dialog box to a darker setting.
"Adjusting the Toner Density"

Cause 3: [Toner Save] is enabled.

Solution: Clear the [Toner Save] check box on the printing preferences dialog box.
  1. Click the [Quality] tab → [Settings].
  2. Clear the [Toner Save] check box.
Cause 4: The printer is exposed to direct sunlight or strong light.

Solution: Move the printer to a location not exposed to direct sunlight or strong light.
If the printer is exposed to a strong light source, move the printer away from the light source.

The overall print result is dark.

Cause 1: The [Toner Density] setting is not appropriate.

Solution: Adjust [Toner Density] on the printing preferences dialog box to a lighter setting.
"Adjusting the Toner Density"

Cause 2: The printer is exposed to direct sunlight or strong light.

Solution: Move the printer to a location not exposed to direct sunlight or strong light.
If the printer is exposed to a strong light source, move the printer away from the light source.

Printing is uneven.

Cause 1: The paper is too moist or too dry.

Solution: Replace with paper that meets printing specifications.
"Paper Requirements"

Cause 2: The toner cartridge is empty, has deteriorated, or is damaged.

Solution: Check the remaining amount of toner.
Replace any old toner cartridges with a new toner cartridge.
"Checking the Remaining Amount of Toner and Handling Toner Cartridges"
"Replacing Toner Cartridges"

The front or back of the printed paper has smudge marks.

Cause: The fixing roller inside the printer is dirty.

Solution: Clean the fixing roller.
"Cleaning the Inside of the Printer"
IMPORTANT
Cleaning the fixing roller

  • The cleaning paper is first output partially after the front side is printed, and then it is fed again to be printed on the back side. Do not touch the cleaning paper until it is output completely.
  • The cleaning process takes approximately 80 seconds to complete.
  • The cleaning process cannot be canceled.

Smudge marks of spattering toner appear around the text or patterns.

Cause 1: You are not using appropriate paper.

Solution: Replace with paper that meets printing specifications.
"Paper Requirements"

Cause 2: Because of the type of paper or operating environment (especially low temperatures), smudge marks of spattering toner appear.

Solution 1: Set [Special Print Mode] to [Special Settings 4] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 4] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
Solution 2: If Solution 1 does not solve the problem, setting [Special Print Mode] to [Special Settings 8] on the printing preferences dialog box may solve this problem.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 8] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
IMPORTANT
Precautions when selecting [Special Settings 4]

Do not select [Special Settings 4] when using paper that has been stored in a location with high temperature or humidity. This may result in a deterioration in print quality.

Thin, horizontal lines appear on the printout.

Cause: When printing for an extended period of time, thin horizontal lines may appear in halftone portions of the document being printed.

Solution: Use the Printer Status Window to configure the setting to prevent poor print quality after a long idle time.
  1. Click the icon of the printer () in the taskbar.
  2. Select [Canon LBP5050].
  3. Click [Options] → [Device Settings] → [Assisting Print Settings].
  4. Select the [Prevent Poor Quality after Long Idle] check box.
  5. If this solves the problem, clear the [Prevent Poor Quality after Long Idle] check box.

Toner was placed on areas not intended for printing.

Cause: When printing on glossy paper, toner may be placed on areas not intended for printing.

Solution: Set [Special Print Mode] to [Special Settings 9] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 9] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].

An image with two or more toner colors is appears faded.

Cause: The printer is being used in an environment with high humidity.

Solution: Set [Special Print Mode] to [Special Settings 1] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 1] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].

Thin lines are faded or halftone images are faint.

Cause: You are not using appropriate paper.

Solution 1: Replace with paper that meets printing specifications.
"Paper Requirements"

Solution 2: Set [Special Print Mode] to [Special Settings 3] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 3] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].

Colors are uneven or not printed smoothly.

Cause: Large characters, wide lines, or diagrams with high color density were printed.

Solution: Set [Special Smoothing Mode] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select the appropriate mode for [Special Smoothing Mode].
Normally, select [Mode 1] for [Special Smoothing Mode].
If the following conditions occur when [Mode 1] is selected, select [Mode 2] to [Mode 6].
IMPORTANT
Precautions when configuring [Special Smoothing Mode]

  • When [Mode 2], [Mode 3], or [Mode 5] is selected, the area around a diagram may not be printed smoothly.
  • When [Mode 5] is selected, characters and lines may not be printed smoothly.
  • When [Mode 3] or [Mode 4] is selected, large characters and thick lines may be printed with uneven colors.
  • When [Mode 6] is selected, characters, lines, diagrams, and photos may be printed with uneven colors.

A portion of the page is not printed.

Cause 1: The scaling factor is not appropriate.

Solution 1: Clear the [Manual Scaling] check box on the [Page Setup] sheet.
When the [Manual Scaling] check box is cleared, the scaling factor is automatically increased or decreased according to the [Page Size] and [Output Size] settings.

Solution 2: Specify the appropriate scaling factor according to the paper size to be used.
"Enlarging or Reducing the Page to Print"

Cause 2: The position of the paper is not correct.

Solution: Load the paper properly.
"Loading Paper and Registering the Paper Size"

Cause 3: The document was printed without margins.

Solution: Data is printed with a margin of 5 mm (10 mm for envelopes). Provide a margin around the data.
IMPORTANT
Printing on envelopes

Printing data in the entire printable area of an envelope may result in a deterioration in print quality.
Arrange the data to a size slightly smaller than the printable area.

The printing position is skewed.

Cause 1: [Gutter] is specified.

Solution: Set [Gutter] to [0] on the printing preferences dialog box.
"Printing with a Gutter on the Edge of the Paper"

Cause 2: The top margin or paper position setting in the application is not specified properly.

Solution: Properly specify the top margin or paper position setting in the application.
For details on specifying these settings, see the instruction manual supplied with the application.

The data from one page is printed on the next page.

Cause: The line spacing or lines per page setting in the application is not specified properly.

Solution: Specify the line spacing or lines per page setting in the application so that the data fits onto one page, and then print again.
For details on specifying these settings, see the instruction manual supplied with the application.

Nothing is printed on the paper.

Cause: Multiple sheets of paper were fed at a time.

Solution: If you are using transparencies, labels, or coated paper, fan it thoroughly and load it again.

The toner did not fix onto the paper properly.

Cause 1: You are not using appropriate paper.

Solution: Replace with paper that meets printing specifications.
"Paper Requirements"

Cause 2: You are using heavy paper with a rough surface.

Solution 1: Set [Paper Type] to [Heavy Paper 1] or [Heavy Paper 2] on the printing preferences dialog box.
Set [Paper Type] on the [Paper Source] sheet.

Solution 2: Set [Special Print Mode] to [Special Settings 5] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 5] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
Solution 3: Setting [Special Print Mode] to [Special Settings 7] on the printing preferences dialog box may solve this problem.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 7] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
IMPORTANT
Precautions when setting [Special Settings 7]

If setting [Special Print Mode] to [Special Settings 7] does not solve the problem, set [Special Print Mode] to [Off] and set [Paper Type] as follows.
However, residual images may appear on non-printed areas.
  • If [Paper Type] was set to [Plain Paper L], set it to [Plain Paper].
  • If [Paper Type] was set to [Plain Paper], set it to [Heavy Paper 1].
  • If [Paper Type] was set to [Heavy Paper 1], set it to [Heavy Paper 2].
  • If [Paper Type] was set to [Envelope], set it to [Envelope H].
  • If [Paper Type] was set to [Coated Paper 1], set it to [Coated Paper 2].
  • If [Paper Type] was set to [Coated Paper 2], set it to [Coated Paper 3].
  • If [Paper Type] was set to [Coated Paper 3], set it to [Coated Paper 4].
Cause 3: A problem occurred inside the printer.

Solution 1: If a service message is displayed in the Printer Status Window, turn off the printer, wait at least 10 seconds, and then turn on the printer. This may clear the message.

Solution 2: If the message is still displayed after performing Solution 1, contact your local authorized Canon dealer.
"If the Alarm Indicator Turns On"

Colored lines and text appear faded.

Cause: The document contains thin lines or text.

Solution: Select the [Prioritize Printing of Colored Lines and Text] check box on the printing preferences dialog box.
  1. Click the [Quality] tab → [Settings].
  2. Select the [Prioritize Printing of Colored Lines and Text] check box.

Colored text appears blurred.

Cause: The colored text is in boldface.

Solution: Change the matching method on the printing preferences dialog box.
  1. Select the [Manual Color Settings] check box on the [Quality] sheet.
  2. Click [Color Settings].
  3. Click the [Matching] tab and select [Perceptual [Monitor Color Matched]] for [Matching Method].

The printing position is skewed slightly depending on the color to be printed.

Cause: Although laser printers are manufactured with high-precision technology, a phenomenon called "out-of-register colors" may be noticeable depending on the printed image. Please note that this is due to the structure of laser printers and is not a printer malfunction.

Solution 1: Correct the "out-of-register colors" on the Printer Status Window.
"Correcting 'Out-of-Register Colors'"

Solution 2: Set [Use Pure Black] to [Never] on the printing preferences dialog box. This may help prevent poor print quality ("out-of-register colors").
  1. Click the [Quality] tab → [Settings].
  2. Select [Never] for [Use Pure Black].

Data is not printed in the correct color (specified color), or colored text appears blurred due to "out-of-register colors."

Cause 1: A toner cartridge is not installed properly.

Solution: Make sure that the toner cartridges are installed properly.
"Preparing the Toner Cartridges"
"Replacing Toner Cartridges"

Cause 2: A toner cartridge is almost empty, or the drum of one of the toner cartridges has deteriorated.

Solution 1: Calibrate the printer using the Printer Status Window.
"Calibrating the Printer"

Solution 2: Check the toner cartridge.
Replace any old toner cartridges with a new toner cartridge.
"Checking the Remaining Amount of Toner and Handling Toner Cartridges"
"Replacing Toner Cartridges"

Cause 3: You are not using appropriate paper.

Solution: Replace with paper that meets printing specifications.
"Paper Requirements"

Cause 4: Data was sent before completing calibration, such as when the printer was turned on.

Solution: Make sure that calibration is completed before sending data to the printer.
NOTE
Calibrating the printer after it is turned on

Use [Startup Settings] on the Printer Status Window to configure this setting.
"Calibrating the Printer"

Thin lines or fill patterns are not printed with the specified colors or do not appear at all.

Cause 1: Some of the colors cannot be reproduced because of the combination of colors or patterns.

Solution 1: Adjust the colors in the application and print again.
For details on adjusting the colors, see the instruction manual supplied with the application.

Solution 2: Change the patterns in the application and print again.
For details on adjusting the patterns, see the instruction manual supplied with the application.

Cause 2: The colors may appear different depending on the halftone pattern.

Solution 1: Adjust to a darker color and print again.
For details on adjusting the color, see the instruction manual supplied with the application.

Solution 2: Reload the paper with a different feeding direction and print again.
"Loading Paper and Registering the Paper Size"

Shaded patterns are not printed in the correct color (specified color).

Cause: The shaded pattern of the print data and the dither pattern of the printer are interfering with one another.

Solution 1: Print again without specifying a shaded pattern in the application.
For details on specifying this setting, see the instruction manual supplied with the application.

Solution 2: Change the [Color Halftones] or [B & W Halftones] setting on the printing preferences dialog box.
  1. Click the [Quality] tab → [Settings].
  2. Set [Color Halftones] or [B & W Halftones] to [Gradation] or [Color Tone].

The displayed color and printed color differ when printing photos.

Cause: The methods for adjusting the color on the screen (RGB) and in the printer (YMC) are different. Therefore, the color on the screen may not be printed out exactly as it appears.

Solution 1: Change the [Matching Method] setting on the printing preferences dialog box.
  1. Select the [Manual Color Settings] check box on the [Quality] sheet.
  2. Click [Color Settings].
  3. Click the [Matching] tab → select [Perceptual [Monitor Color Matched]] for [Matching Method].
Solution 2: Adjust the [Gamma] setting on the printing preferences dialog box.
  1. Select the [Manual Color Settings] check box on the [Quality] sheet.
  2. Click [Color Settings].
  3. Select [Gamma Adjustment] for [Matching Mode] on the [Matching] sheet.
  4. Select the gamma value for [Gamma].
NOTE
About the gamma value

The higher the gamma value, the darker the colors in the image become when printed.

Streaks appear in gradated portions of printed diagrams.

Cause: [Use Pure Black] is applied to the gray color portions of the streaks in the diagram.

Solution: Change the [Use Pure Black] setting on the printing preferences dialog box.
  1. Click the [Quality] tab → [Settings].
  2. Select [Never] for [Use Pure Black].

Fill patterns and borders are not printed in the correct color (specified color) even when specified with the same color.

Cause: To print thin lines clearly, a special process may be used depending on the line width of the border.

Solution 1: Change the matching method on the printing preferences dialog box.
  1. Select the [Manual Color Settings] check box on the [Quality] sheet.
  2. Click [Color Settings].
  3. Click the [Matching] tab and select [Perceptual [Monitor Color Matched]] for [Matching Method].
Solution 2: Adjust the [Gamma] setting on the printing preferences dialog box.
  1. Select the [Manual Color Settings] check box on the [Quality] sheet.
  2. Click [Color Settings].
  3. Select [Gamma Adjustment] for [Matching Mode] on the [Matching] sheet.
  4. Select the gamma value for [Gamma].
NOTE
About the gamma value

The higher the gamma value, the darker the colors in the image become when printed.

The back of the printed paper has smudge marks.

Cause: The size of the print data was larger than that of the loaded paper.

Solution: Make sure that the size of the print data matches that of the loaded paper.

A portion of the printout is printed differently than what is displayed on screen. (Windows 2000, XP, and Server 2003)

Cause: Depending on the application, the page printer may be using EMF data that cannot be processed.

Solution: Change the [EMF Spooling] setting on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Clear the [EMF Spooling] check box.

[H-05] Installation Problems

If a problem occurs during installation, you can use the measures indicated in this section to try to solve the problem.
IMPORTANT
Contacting your local authorized Canon dealer

If a problem that is not indicated in this section occurs or if none of the suggested measures solve the problem, contact your local authorized Canon dealer.

Local Installation Problems

When installing the printer driver from the CD-ROM, the printer is not recognized automatically after connecting the USB cable.

Cause 1: The USB cable was already connected and the printer was turned on before the printer driver was installed.

Solution: Turn off the printer and disconnect the USB cable.
Then, connect the USB cable again and turn on the printer.

Cause 2: The printer is off.

Solution: Turn on the printer.

Cause 3: The USB cable is not connected properly.

Solution: Make sure that the printer and computer are properly connected with the USB cable.

Cause 4: An inappropriate USB cable is used.

Solution: Use a USB cable that is appropriate for the USB interface of the printer and has the following symbol.
The following is the USB interface environment of this printer. Cause 5: The USB class driver is installed.

Solution: Uninstall the USB class driver.
"Uninstalling the USB Class Driver"

Cause 6: The printer driver cannot be installed from CD-ROM Setup.

Solution: Install the printer driver with plug and play.
"Installing the Printer Driver with Plug and Play (Windows Vista)"
"Installing the Printer Driver with Plug and Play (Windows XP and Server 2003)"
"Installing the Printer Driver with Plug and Play (Windows 2000)"

Cause 7: The printer driver was installed by a user without administrative rights.

Solution: Install the printer driver with administrative rights.

Installation Problems When the Printer Is Shared on a Network

The print server for connection cannot be found.

Cause 1: The print server is not started.

Solution: Start the print server.

Cause 2: The printer is not configured for sharing.

Solution: Use the printer properties dialog box to configure this printer as a shared printer.
"Sharing the Printer"

Cause 3: The user does not have permission to access the print server or printer.

Solution: Ask your network administrator to change the user permissions.

Cause 4: If you are using Windows Vista, [Network Discovery] is not set to [On].

Solution: Use the following procedure to set [Network Discovery] to [On].
  1. Display the [Network and Sharing Center] dialog box.
  2. Select [On] for [Network discovery].
The shared printer cannot be accessed.

Cause 1: The user of the computer to connect to the print server is not registered or a password has not been specified.

Solution: Register the user of the computer to connect to the print server or specify a password.
Contact your network administrator for more details.

Cause 2: The network path is not correct.

Solution 1: Use the following procedure to check the network path.
  1. Click [Start] → [All Programs] → [Accessories] → [Windows Explorer].
  2. Select the print server from [My Network Places], and then check that the printer icon is displayed.
Solution 2: If the print server was installed manually, check if the path is specified correctly as "\\<print server name (computer name of print server)>\<printer name>".

When Uninstallation Fails

Uninstalling the printer driver

If you cannot uninstall the printer driver using the uninstaller, you can uninstall the printer driver using [Add or Remove Programs] in Windows.
"Uninstalling the Printer Driver Using the Control Panel"

Uninstalling the USB class driver

If you cannot install the printer driver after uninstalling it, or you cannot uninstall the printer driver, uninstall the USB class driver.
"Uninstalling the USB Class Driver"
IMPORTANT
Precautions when uninstalling the USB class driver

  • If the USB class driver is under [Other Devices], the printer driver is not installed properly.
    Select and uninstall one of the following depending on your operating system.
    • [Canon LBP5050]
    • [Unknown device]
  • Never delete any drivers for devices other than this printer. If a driver is accidentally deleted, Windows may not operate properly.
  • If the USB class driver is not installed properly, [USB Printing Support] is not displayed.
NOTE
If [Canon LBP5050] is displayed

"Uninstalling the Printer Driver Using the Control Panel"

If you are using Windows Vista

If the [User Account Control] dialog box appears, click [Continue].

[H-06] Printing Problems

If a problem occurs during printing, you can use the measures indicated in this section to try to solve the problem.
IMPORTANT
If a message appears in the Printer Status Window
Follow the on-screen instructions to solve the problem.

If a paper jam occurs
"Paper Jams"
Contacting your local authorized Canon dealer
If a problem that is not indicated in this section occurs or if none of the suggested measures solve the problem, contact your local authorized Canon dealer.

When the Envelope Flap Sticks

Cause 1: You are not using an appropriate envelope.

Solution: Replace with a usable envelope and print again.
"Paper Requirements"

Cause 2: The printer is being used in an environment with high humidity.

Solution: Set [Special Print Mode] to [Special Settings 2] on the printing preferences dialog box.

  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 2] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].

When Paper is Curled During Printing

Cause 1: The paper was not stored properly and has absorbed moisture.

Solution: Replace with new paper and print again.

"Paper Requirements"

Cause 2: You are not using appropriate paper.

Solution: Replace with paper that meets printing specifications.

"Paper Requirements"

Cause 3: Because of the type of paper or operating environment (high temperature and humidity or low temperature and humidity), the paper may curl.

Solution 1: If the output paper curls as shown, set [Special Print Mode] to [Special Settings 6] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 6] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
Solution 2: If the output paper curls as shown, set [Special Print Mode] to [Special Settings 7] on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Select [Special Settings 7] for [Special Print Mode].
  4. If this solves the problem, reset [Special Print Mode] to [Off].
IMPORTANT
Precautions when setting [Special Settings 6]

If setting [Special Print Mode] to [Special Settings 6] does not solve the problem, set [Special Print Mode] to [Off] and set [Paper Type] as follows.
However, the toner may not fix onto paper well, and the printing may come out faint.
  • If [Paper Type] was set to [Plain Paper], set it to [Plain Paper L].
  • If [Paper Type] was set to [Heavy Paper 1], set it to [Plain Paper].
  • If [Paper Type] was set to [Heavy Paper 2], set it to [Heavy Paper 1].
  • If [Paper Type] was set to [Envelope H], set it to [Envelope].
  • If [Paper Type] was set to [Coated Paper 2], set it to [Coated Paper 1].
  • If [Paper Type] was set to [Coated Paper 3], set it to [Coated Paper 2].
  • If [Paper Type] was set to [Coated Paper 4], set it to [Coated Paper 3].
Precautions when setting [Special Settings 7]

If setting [Special Print Mode] to [Special Settings 7] does not solve the problem, set [Special Print Mode] to [Off] and set [Paper Type] as follows.
However, residual images may appear on non-printed areas.
  • If [Paper Type] was set to [Plain Paper L], set it to [Plain Paper].
  • If [Paper Type] was set to [Plain Paper], set it to [Heavy Paper 1].
  • If [Paper Type] was set to [Heavy Paper 1], set it to [Heavy Paper 2].
  • If [Paper Type] was set to [Envelope], set it to [Envelope H].
  • If [Paper Type] was set to [Coated Paper 1], set it to [Coated Paper 2].
  • If [Paper Type] was set to [Coated Paper 2], set it to [Coated Paper 3].
  • If [Paper Type] was set to [Coated Paper 3], set it to [Coated Paper 4].

When Nothing Is Printed When Printing from an Application

Check whether a test page can be printed.
Open the [Printers and Faxes] or [Printers] folder.
  • Windows Vista: [Start] → [Control Panel] → [Printers]
  • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
  • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
  • Windows 2000: [Start] → [Settings] → [Printers]

Open the printing preferences dialog box.
  1. Select [Canon LBP5050].
  2. Click [File].
  3. Click [Properties].
NOTE
If you are using Windows Vista

By default, the menu bar is not displayed.
Use the following procedure to display the menu bar.
  1. Click [Organize] on the toolbar.
  2. Click [Layout].
  3. Select [Menu Bar].

Click the [General] tab → [Print Test Page].

  • If a test page can be printed
    Check the printing preferences in the application.
  • If a test page cannot be printed
    Reinstall the printer driver.
NOTE

When Data Is Not Sent to the Printer

If the print data cannot be sent to the printer, one of the following may be the cause. Take the necessary action.

When the printer and computer are connected with a USB Cable

There is a problem with the printer power supply.

Cause 1: The printer is off.

Solution: Turn on the printer.
"Turning the Printer On and Off"

Cause 2: The power cord is unplugged from the AC power outlet.

Solution: Plug the power cord into an AC power outlet.

Cause 3: The printer is plugged into an extension cord or power strip.

Solution: Plug the power cord directly into an AC power outlet.

Cause 4: The breaker has tripped.

Solution: Reset the breaker on the switch board.

Cause 5: There is a break in the power cord.

Solution: If the printer can be turned on after replacing the power cord with one that is of the same type, then purchase a new power cord and replace the broken one.

There is a problem with the USB cable connection.

Cause 1: The USB cable is not connected properly.

Solution: Make sure that the printer and computer are properly connected with the USB cable.

Cause 2: An inappropriate USB cable is used.

Solution: Use a USB cable that is appropriate for the USB interface of the printer and has the following symbol.
NOTE
The following is the USB interface environment of this printer.
  • Hi-Speed USB
  • USB

There is a problem with the bi-directional communication.

Cause: Bi-directional communication is not enabled.

Solution: Perform the following procedure.
  1. Open the [Printers and Faxes] or [Printers] folder.
    • Windows Vista: [Start] → [Control Panel] → [Printers]
    • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
    • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
    • Windows 2000: [Start] → [Settings] → [Printers]
  2. Select [Canon LBP5050] → click [File] → [Properties].
  3. Click the [Ports] tab.
  4. Select the [Enable bidirectional support] check box.
  5. Restart your computer.
  6. Turn off the printer, wait at least 10 seconds, and then turn on the printer.
NOTE
If you are using Windows Vista

By default, the menu bar is not displayed.
Use the following procedure to display the menu bar.
  1. Click [Organize] on the toolbar.
  2. Click [Layout].
  3. Select [Menu Bar].
There is a problem with the port to be used.

Cause: The port to be used is not selected properly.

Solution: Perform the following procedure.
  1. Open the [Printers and Faxes] or [Printers] folder.
    • Windows Vista: [Start] → [Control Panel] → [Printers]
    • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
    • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
    • Windows 2000: [Start] → [Settings] → [Printers]
  2. Open the printing preferences dialog box.
    1. Select [Canon LBP5050].
    2. Click [File].
    3. Click [Properties].
  3. Click the [Ports] tab.
  4. Check whether the port to be used is selected properly.
    • If the correct port is not selected, select the correct port, and then click [OK].
    • If there is no available port, uninstall the printer driver and then reinstall it.
  5. Click [OK].
NOTE
If you are using Windows Vista

By default, the menu bar is not displayed.
Use the following procedure to display the menu bar.
  1. Click [Organize] on the toolbar.
  2. Click [Layout].
  3. Select [Menu Bar].

When the printer and computer are connected with an Ethernet cable (LBP5050n only)



There is a problem with the printer power supply.

Cause 1: The printer is off.

Solution: Turn on the printer.
"Turning the Printer On and Off"

Cause 2: The power cord is unplugged from the AC power outlet.

Solution: Plug the power cord into an AC power outlet.

Cause 3: The printer is plugged into an extension cord or power strip.

Solution: Plug the power cord directly into an AC power outlet.

Cause 4: The breaker has tripped.

Solution: Reset the breaker on the switch board.

Cause 5: There is a break in the power cord.

Solution: If the printer can be turned on after replacing the power cord with one that is of the same type, then purchase a new power cord and replace the broken one.


There is a problem with the Ethernet cable connection.

Cause: The Ethernet cable is not connected properly.

Solution: Make sure that the printer and computer are properly connected with the Ethernet cable.


There is a problem with the network board.

Cause: The unicast communication mode is enabled.

Solution: Return to the normal communication mode (broadcast communication mode). Contact your network administrator for details.
"Setting the Printer to Unicast Communication Mode Using an FTP Client"


There is a problem with the port to be used.

Cause 1: The port to be used is not selected properly.

Solution: Perform the following procedure.
  1. Open the [Printers and Faxes] or [Printers] folder.
    • Windows Vista: [Start] → [Control Panel] → [Printers]
    • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
    • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
    • Windows 2000: [Start] → [Settings] → [Printers]
  2. Open the printing preferences dialog box.
    1. Select [Canon LBP5050].
    2. Click [File].
    3. Click [Properties].
  3. Click the [Ports] tab.
  4. Check whether the port to be used is selected properly.
    • If the correct port is not selected, select the correct port, and then click [OK].
    • If there is no available port, reinstall the printer driver.
  5. Click [OK].
NOTE
If you are using Windows Vista

By default, the menu bar is not displayed.
Use the following procedure to display the menu bar.
  1. Click [Organize] on the toolbar.
  2. Click [Layout].
  3. Select [Menu Bar].
Cause 2: The IP address of the printer was changed.

Solution: Use the following procedure to change the IP address.

Open the [Printers and Faxes] or [Printers] folder.
  • Windows Vista: [Start] → [Control Panel] → [Printers]
  • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
  • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
  • Windows 2000: [Start] → [Settings] → [Printers]

Open the printing preferences dialog box.
  1. Select [Canon LBP5050].
  2. Click [File].
  3. Click [Properties].
NOTE
If you are using Windows Vista

By default, the menu bar is not displayed.
Use the following procedure to display the menu bar.
  1. Click [Organize] on the toolbar.
  2. Click [Layout].
  3. Select [Menu Bar].

Open the dialog box for adding a port.
  1. Click the [Ports] tab.
  2. Click [Add Port].

Select the type of port.
  1. Select [Standard TCP/IP Port].
  2. Click [New Port].

Click [Next].

Enter the new IP address or name of the printer.
  1. Enter the name or IP address of the printer for [Printer Name or IP Address].
  2. Click [Next].
When entering the printer name, enter the DNS name registered on the DNS server (up to 78 characters).
IMPORTANT
If the printer cannot be detected

The following dialog box appears. Perform either of the following operations.
  • Follow the on-screen instructions and search again for the printer.
  • Specify [Device Type].
    1. Select [Standard] and [Canon Network Printing Device with P9100] for [Device Type] → click [Next].
    2. Click [Next].
NOTE
If you are not sure what to enter

The value to be entered varies depending on how the IP address of the printer was configured.
Contact your network administrator for more details.

Click [Finish].

Click [Close].

Click [Apply].

Click [OK].
NOTE
Deleting an unnecessary port

Select the port you want to delete on the [Ports] sheet → click [Delete Port].
Cause 3: A Standard TCP/IP Port that was created from the [Printers] folder is being used. (Windows Vista)

Solution: In Windows Vista, you cannot use a Standard TCP/IP Port created from the [Printers] to print.
Uninstall the printer driver, and then use the supplied CD-ROM to reinstall the printer driver from CD-ROM Setup.
"Uninstalling the Printer Driver Using the Canon LBP5050 Uninstaller"
"Installing the Printer Driver from the CD-ROM (When Connected Using an Ethernet Cable)"

There is a problem with the IP Address.

Cause: The IP address is not configured properly.

Solution 1: Use the following procedure to make sure that the IP address is configured properly.
  1. Run Command Prompt.
    • Windows XP, Server 2003, and Vista: [Start] → [All Programs] → [Accessories] → [Command Prompt]
    • Windows 2000: [Start] → [Programs] → [Accessories] → [Command Prompt]
  2. Enter "ping<space><printer IP address>", and then press [ENTER] on the keyboard.
    Example: "ping 192.168.0.215"
  3. If the IP address is configured properly, the following is displayed. (This indicates that four packets were sent and four packets were successfully received.)
    • Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
  4. Contact your network administrator if the following result is displayed.
    • Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
  5. Enter "exit", and then press [ENTER] on the keyboard to exit Command Prompt.
Solution 2: When using DHCP, BOOTP, or RARP to configure the IP address, check whether DHCP, BOOTP, or RARP is running.
"Displaying the Network Settings"
"Configuring the Protocol Settings Using NetSpot Device Installer"


There is a problem with the computer that is trying to print a document.

Cause 1: The printer is not specified as the default printer.

Solution: Specify the printer as the default printer.

Cause 2: The printer driver is not installed properly.

Solution: Perform the following procedure.
  1. Print the Network Status Print.
    "Printing a Network Test Page"
    • If the Network Test Page prints successfully, the printer driver is installed properly.
    • If the Network Test Page prints unsuccessfully, perform Steps 2 and 3.
  2. Uninstall the printer driver.
    "Uninstalling the Printer Driver Using the Canon LBP5050 Uninstaller"
  3. Reinstall the printer driver.
    "Installing the Printer Driver from the CD-ROM (When Connected Using an Ethernet Cable)"
Cause 3: The TCP/IP protocol is not operating.

Solution: Check whether the TCP/IP protocol is operating.

Cause 4: The users who can access the printer are restricted.

Solution: Use the Remote UI to check the [Restrict TCP/IP Printing] setting.
"Configuring the Security Settings"

When the printer is shared on a network



There is a problem with the printer power supply.

Cause 1: The printer is off.

Solution: Turn on the printer.
"Turning the Printer On and Off"

Cause 2: The power cord is unplugged from the AC power outlet.


Solution: Plug the power cord into an AC power outlet.

Cause 3: The printer is plugged into an extension cord or power strip.

Solution: Plug the power cord directly into an AC power outlet.

Cause 4: The breaker has tripped.

Solution: Reset the breaker on the switch board.

Cause 5: There is a break in the power cord.

Solution: If the printer can be turned on after replacing the power cord with one that is of the same type, then purchase a new power cord and replace the broken one.


There is a problem with the interface cable connection.

Cause 1: The interface cable is not connected properly.

Solution: Check whether the printer and print server and the print server and client computer are properly connected with the interface cable.

Cause 2: An inappropriate USB cable is used.

Solution: Use a USB cable that is appropriate for the USB interface of the printer and has the following symbol.
NOTE
The following is the USB interface environment of this printer.
  • Hi-Speed USB
  • USB

There is a problem with the print server.

Cause 1: The print server is not on.

Solution: Turn on the print server.

Cause 2: The print server is not connected to the network properly.

Solution 1: Make sure that the print server and network are properly connected with the Ethernet cable.

Solution 2: Make sure that the network settings of the print server are configured properly.

Cause 3: An additional driver (replacement driver) has not been updated when the print server is operating Windows Vista (64-bit version).

Solution: Use the following procedure to update the additional driver (replacement driver).

  1. Uninstall the printer driver on the print server.
    "Uninstalling the Printer Driver Using the Canon LBP5050 Uninstaller"
  2. Install the new printer driver on the print server.
    "Installing the Printer Driver from the CD-ROM (When Connected Using an Ethernet Cable)"
  3. Configure the printer for sharing and reinstall the additional driver again.
    "Sharing the Printer"
NOTE
To check the processor version of Windows Vista

Use the following procedure to determine which version of Windows Vista you are using.
  1. Click [Start] → [Control Panel].
  2. Click [System and Maintenance] → [System].
  3. Check the processor version for [System type].
    • 32-bit version: "32-bit Operating System" is displayed.
    • 64-bit version: "64-bit Operating System" is displayed.
There is a problem with the network path to the print server.

Cause 1: The network path was specified incorrectly during installation of the printer driver.

Solution: When installing the printer driver from the [Printers and Faxes] or [Printers] folder and specifying the network path using "\" directly, check if the path is specified correctly as "\\<print server name (computer name of print server)>\<printer name>".

Cause 2: The network path to the print server was changed.

Solution: Contact your network administrator.

[H-07] Network Troubleshooting (LBP5050N Only)

If a network problem occurs, you can use the measures indicated in this section to try to solve the problem.
IMPORTANT
Contacting your local authorized Canon dealer

If a problem that is not indicated in this section occurs or if none of the suggested measures solve the problem, contact your local authorized Canon dealer.

Data cannot be printed from the network.

Cause 1: The interface cable is not connected to the printer properly.

Solution: Make sure that the printer is connected to the network with the correct interface cable, and then restart the printer.

Cause 2: The network is not configured properly.

Solution: Configure the IP address properly.
"Configuring the IP Address"

Cause 3: The port is not configured properly.

Solution: If the IP address was changed after installation of the printer driver, reconfigure the port.
"Configuring a Port and Installing the Printer Driver"

Cause 4: The computer is not configured properly.

Solution: Use the following procedure to specify the printer as the default printer.
  1. Open the [Printers and Faxes] or [Printers] folder.
    • Windows Vista: [Start] → [Control Panel] → [Printers]
    • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
    • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
    • Windows 2000: [Start] → [Settings] → [Printers]
  2. Select [Canon LBP5050] → click [File] → [Set as Default Printer].

All of the indicators on the printer network board are off.

Cause 1: The Ethernet cable is not connected properly or is damaged.

Solution 1: Disconnect the Ethernet cable and then reconnect it.

Solution 2: Replace the Ethernet cable.

Cause 2: The Ethernet cable is connected to the UP-LINK (cascade) port on the hub.

Solution 1: Connect the Ethernet cable to the port on the hub with an "X" mark.

Solution 2: If the hub has an UP-LINK (cascade) switch, switch to the "X" side.

Cause 3: A cross-type Ethernet cable is used.

Solution 1: Use a straight-type Ethernet cable.

Solution 2: Connect the cross-type Ethernet cable to the UP-LINK (cascade) port on the hub. If the hub has an UP-LINK (cascade) switch, switch to the "=" side.
NOTE
Cross-type Ethernet cable

Use this type of cable when connecting the printer directly to a computer.
Cause 4: Cannot communicate with the hub.

Solution: Make sure that the hub is on.

The ERR indicator on the printer network board is on.

Cause: The Ethernet cable is not connected properly or is damaged.

Solution 1: Make sure that the Ethernet cable is connected properly.

Solution 2: Replace the Ethernet cable and check if it is damaged.

Solution 3: If the ERR indicator still comes on after performing the above solutions, contact your local authorized Canon dealer.

The ERR indicator on the printer network board blinks at an interval of four times.

Cause: The network board was reset (the printer was turned on while pressing the reset button on the network board), resetting the network board to the default settings.

Solution: Turn off the printer, wait at least 10 seconds, and then turn on the printer.

The ERR indicator on the network board is constantly blinking.

Cause: The network board is not operating properly.

Solution: Contact your local authorized Canon dealer to request repair.

The printer became unable to print from the network suddenly.

Cause: The printer was turned off or on when used in a DHCP environment, thereby changing the IP address of the printer.

Solution: Contact your network administrator, and then perform either of the following operations.
NOTE

[H-08] Miscellaneous Problems

If the following problems occur, you can use the measures indicated in this section to try to solve the problem.
IMPORTANT
Contacting your local authorized Canon dealer

If a problem that is not indicated in this section occurs or if none of the suggested measures solve the problem, contact your local authorized Canon dealer.

An error message is displayed the first time the printer is turned on.

Cause: The sealing tape has not been removed from the toner cartridges.

Solution: Turn off the printer, and pull out the sealing tape from each of the four toner cartridges inside the printer.
"Preparing the Toner Cartridges"

LBP5050 does not function properly.

Cause 1: LBP5050 is not specified as the default printer.

Solution: Use the following procedure to specify the printer as the default printer.
  1. Open the [Printers and Faxes] or [Printers] folder.
    • Windows Vista: [Start] → [Control Panel] → [Printers]
    • Windows XP Professional and Server 2003: [Start] → [Printers and Faxes]
    • Windows XP Home Edition: [Start] → [Control Panel] → [Printers and Other Hardware] → [Printers and Faxes]
    • Windows 2000: [Start] → [Settings] → [Printers]
  2. Select [Canon LBP5050] → click [File] → [Set as Default Printer].
Cause 2: The printer driver is not installed properly.

Solution: Print from an application to check whether the printer driver is installed properly. If you cannot print properly, uninstall the printer driver, and then reinstall it.

The printer pauses for a long time between print jobs.

Cause: The fixing unit is cooled down between print jobs (especially after printing narrower paper) to maintain print quality.

Solution: Please wait for the fixing unit to cool down. The printer cools down the fixing unit automatically.
Printing resumes after cooling down the fixing unit.

The printer takes a long time to print complex print data. (Windows 2000, XP, and Server 2003)

Cause: Depending on the application, the page printer may be using EMF data that cannot be processed.

Solution : Change the [EMF Spooling] setting on the printing preferences dialog box.
  1. Click the [Finishing] tab → [Finishing Details].
  2. Click [Advanced Settings].
  3. Clear the [EMF Spooling] check box.

The printer pauses during printing, and then printing repeatedly starts and stops.

Cause: If the printer is used continuously for an extended period of time, the internal temperature of the printer may increase, activating a safety mechanism and pausing printing temporarily. (After continuously printing for approximately 60 minutes at a room temperature of 25°C (77°F), the printer stops for approximately three minutes.)

Solution: Please wait for the fixing unit to cool down. When the inside of the printer cools down, printing resumes.
If the internal temperature of the printer has not decreased sufficiently, the safety mechanism is reactivated and printing is paused temporarily. When the inside temperature cools down sufficiently, the printer resumes normal printing speed. The time it takes for the safety mechanism to activate and for normal printing to resume varies depending on the printer usage conditions.

CD-ROM setup does not appear automatically. (Windows Vista)

Cause: CD-ROM Setup is not specified to appear automatically.

Solution: Perform the following procedure.
  1. Click [Start] → [Control Panel] → [Play CDs or other media automatically].
  2. Select the [Use AutoPlay for all media and devices] check box.
  3. Select [Install or run program] for [Software and games].