A Message Appears in the Control Panel

If an error is occurring for some reason during printing, a message appears in the display of the control panel. Perform solutions according to the displayed message.
Service call message
It is an error state in which the printer cannot print.
Warning message
It is a warning state in which the printer can print, but some solution is required.
Depending on the message type, the message does not appear if [Show Warnings] is set to [Off].
"[Setup] Menu ([Control Menu] Options) "
Error message
It is an error state in which the printer cannot print.
Mark
Description
<Auto Error Skip>
For a message with this mark, perform the following procedure according to the situation.
When you want to skip an error (error skip) and continue to print
1.
Press [  ] (Online) to skip the error. (Printing is continued.)
2.
If print data is missing or is not printed properly, print again.
If [Auto Error Skip] is set to [On], you can skip the error automatically.
"[Setup] Menu ([Control Menu] Options) "
If you want to cancel a job
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Solve the problem according to the displayed message (this item).
3.
Press [ ] (Online) and print again.
NOTE
If multiple warning states are occurring at the same time
Warning messages are displayed alternately.
If an error state and warning state are occurring at the same time
A warning message is not displayed.
Service Call Message
"E nnn-nnnn ("n" represents a number.) "
"E 003-nnnn ("n" represents a number.) "
"E 001-nnnn ("n" represents a number.) "
Warning Message
"16 Prepare toner. Replacement not needed. "
"1H Check toner connect. "
"1F Output tray is full."
"9F Check toner "
"1G Check toner "
"BT Clock error. "
Error Message
"An error occurred while receiving. <Auto Error Skip> "
"30 Not enough memory. <Auto Error Skip> "
"Cannot feed paper. "
"Not enough pattern memory. "
"Cannot find font. <Auto Error Skip> "
"Not enough spool memory. <Auto Error Skip>"
"Cannot perform 2-sided print. <Auto Error Skip> "
"Not enough system memory. <Auto Error Skip> "
"Cannot perform secured print. <Auto Error Skip> "
"Not enough work memory. <Auto Error Skip> "
"Cannot print with the specified resolution. <Auto Error Skip> "
"Output tray is full. Remove paper. "
"Cannot print. Reg. Table is full. <Auto Error Skip> "
"Paper is jammed. "
"Cannot start job. <Auto Error Skip> "
"Pseudo-scalable coordinate error. <Auto Error Skip> "
"Cannot store. <Auto Error Skip> "
"Pseudo-scalable size error. <Auto Error Skip> "
"Check paper size. "
"Set Cassette n ("n" represents a number.) "
"Check remaining toner. "
"Set cleaning paper and press the Online key. <Auto Error Skip> "
"Close the tray./Close the sub-output tray. "
"Set paper below. "
"Close XXXX cover. (XXXX shows the cover name, or nothing is displayed in XXXX.) "
"Set the toner cartridge. "
"Cut main power. Check options. "
"Specified image dataformat is not supported by mode. <Auto Error Skip> "
"DB Not enough memory. "
"Syntax error. "
"Font table is full. <Auto Error Skip> "
"Version error. "
"Image browse error. "
"A4 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Image data error. "
"A5 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Layout error. "
"A7 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Load paper. "
"D7 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Not enough download memory. <Auto Error Skip> "
"D8 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Not enough font memory. "
"D9 nn Error ("nn" represents two-digit alphanumeric characters.) "
"Not enough image memory. "
"F9-nn PWR OFF>ON ("nn" represents two-digit alphanumeric characters.) "
"Not enough macro memory. "

E nnn-nnnn ("n" represents a number.)

<Cause> A problem is occurring inside the printer.
Solution
Solve the problem following the instructions in "If a Service Error or the Message <F9-nn PWR OFF>ON> Is Displayed."

E 001-nnnn ("n" represents a number.)

<Cause> A problem is occurring with the fixing unit of the printer.
Solution
Follow the procedure in "If a Fixing Unit Error Is Displayed" in "The Message Indicator Is On", and then contact your local authorized Canon dealer.

E 003-nnnn ("n" represents a number.)

<Cause> A problem is occurring with the fixing unit of the printer.
Solution
Follow the procedure in "If a Fixing Unit Error Is Displayed" in "The Message Indicator Is On", and then contact your local authorized Canon dealer.

16 Prepare toner. Replacement not needed.

<Cause> The toner cartridge needs to be replaced soon.
Solution
You can continue printing for a while, however, have a new toner cartridge available. If you print a large amount of data or white patches appear on the images even after applying this remedy, replace the toner cartridge with a new one. If the printer is not online after closing the front cover, press [  ] (Online).
"Toner Cartridge Replacement"

1F Output tray is full.

<Cause> The output tray is filled to the limit.
Solution
Remove the paper in the output tray.

1G Check toner

<Cause> The toner cartridge has reached the end of its life.
Solution
Remove the toner cartridge and replace it with a new one.
"Toner Cartridge Replacement"

1H Check toner connect.

<Cause> There is a possibility that the toner cartridge is not installed properly.
Solution 1
Remove the toner cartridge, then reinstall it properly.
Solution 2
If <1H Check toner connect.> appears and there is a problem with the print quality even after applying Solution 1, remove the toner cartridge and replace it with a new one.
"Toner Cartridge Replacement"

9F Check toner

<Cause> There is a possibility that a toner cartridge whose life has once reached the end is installed.
Solution 1
Check if there is any problem with the toner cartridge.
Solution 2
If <9F Check toner> appears and there is a problem with the print quality even after applying Solution 1, we recommend that you remove the toner cartridge and replace it with a new one.
 " Toner Cartridge Replacement"

BT Clock error.

<Cause> The clock in this printer has a problem.
Solution
Though printing is possible as is, logs such as the print logs cannot be recorded correctly. Contact your local authorized Canon dealer.

An error occurred while receiving. <Auto Error Skip>

<Cause> The printer received any unanalyzable data while it is receiving a job, or it timed out.
Solution 1
Press [  ] (Online) to cancel printing, then print again.
Solution 2
A problem may be occurring in the network you are using. Check the status of the network that your are using.

Cannot feed paper.

<Cause> Paper of the size or type that cannot be fed from the multi-purpose tray or paper cassette is specified.
Solution 1
If a paper source is specified, press [  ] (Feeder Selection), and then set [Paper Source] to [Auto].
"[Select Feeder] Menu"
Solution 2
Press [ ] (Feeder Selection) to select another paper source.
Solution 3
Load paper appropriate for the paper source.
"Usable Paper"
Solution 4
Specify the following items.
[Standard Paper Size]
[Standard Paper Type]
"[Setup] Menu ([Paper Source Menu] Options) "
Solution 5
Press [ ] (Online), then print from the currently selected paper source. However, this may result in deterioration in print quality.

Cannot find font. <Auto Error Skip>

<Cause> The registered font used to create an overlay form was erased during printing.
Solution 1
Pressing [  ] (Online) continues printing with the drawing thinning out.
Solution 2
Register the font in the memory again or create a form using an available registered font, and then print again.

Cannot perform 2-sided print. <Auto Error Skip>

<Cause> The printer received 2-sided printing data of paper sizes (including the orientation) or paper types unavailable for automatic 2-sided printing.
Solution 1
Press [ ] (Online) to continue printing. However, the data on each side is printed on two pages.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Change the setting to a paper size or type available for automatic 2-sided printing, and then print again.

Cannot perform secured print. <Auto Error Skip>

<Cause> Secured print data is sent from a printer driver that is not for LBP6750dn.
Solution
Press [  ] (Online) to cancel the job.

Cannot print with the specified resolution. <Auto Error Skip>

<Cause> The printer cannot process the data because it is too complicated.
Solution 1
Press [  ] (Online) to continue printing. In this case, the printer prints with the image quality level being lowered.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Set [Gradation Level] to [Standard], and then print again.
"[Setup] Menu ([Quality Menu] Options)"
Solution 3
If you want to print without the image quality level being lowered, install an optional expansion RAM module, and then perform printing.
"Installing RAM/ROM"

Cannot print. Reg. Table is full. <Auto Error Skip>

<Cause> The number of documents in a job exceeded 16.
Solution
Press [  ] (Online) to continue printing. In this case, the job with which an error is occurring is not printed.

Cannot start job. <Auto Error Skip>

<Cause> The specified emulation does not exist.
Solution
Press [  ] (Online) to continue printing from the next data. However, the data with which an error is occurring is not printed.

Cannot store. <Auto Error Skip>

<Cause> The data for which a stored job print is specified is sent from a printer driver that is not for LBP6750dn.
Solution
Press [  ] (Online) to cancel the job.

Check paper size.

<Cause 1> The size of the paper loaded in a paper source is different from the following settings.
Setting for [Output Size] in the [Page Setup] sheet in the printer driver
[MP Tray Paper Size], [Cassette 1 Size], [Cassette 2 Size] or [Cassette 3 Size] in the [Select Feeder] menu
Solution
Specify the setting properly.
"Registering the Paper Size"
"Configuring the Printer Driver and Printing"
<Cause 2> When the following settings in the [Select Feeder] menu are set to [Mixed Sizes], custom size paper whose long edges are 215.9 mm or less is loaded in portrait orientation and printed (only when the UFR II printer driver is used).
[MP Tray Paper Size]
[Cassette 1 Size]
[Cassette 2 Size]
[Cassette 3 Size]
Solution
Load the paper in landscape orientation, then print again.
<Cause 3> When the UFR II printer driver was not used, custom size paper was loaded in landscape orientation to be printed.
Solution
Load the paper in portrait orientation, then print again.
<Cause 4> [Check Paper Size] in the common [Setup] menu ([User Maintenance] options) is set to [On].
Solution
Set [Check Paper Size] to [Off], and then print again
"[Setup] Menu ([User Maintenance] Options)"

Check remaining toner.

<Cause> The toner cartridge needs to be replaced soon.
Solution
Press [  ] (Online). You can continue printing for a while, however, have a new toner cartridge available. If you print a large amount of data or white patches appear on the images even after applying this solution, replace the toner cartridge with a new one. If the printer is not online after closing the front cover, press [  ] (Online).
"Toner Cartridge Replacement"

Close the tray./Close the sub-output tray.

<Cause> Paper was to be output during automatic 2-sided printing.
Solution
Close the sub-output tray. The printer resumes printing.

Close XXXX cover. (XXXX shows the cover name, or nothing is displayed in XXXX.)

<Cause> A cover is open.
Solution
Close the cover firmly. If the printer is not online, press [  ] (Online).

Cut main power. Check options.

<Cause 1> The optional paper feeder is not installed properly.
Solution
Turn the power OFF, install the paper feeder properly, and then turn it ON again.
"Installing the Paper Feeder"
<Cause 2> Any optional paper feeder is installed or removed when the printer is on.
Solution
Turn the power OFF, install or remove the paper feeder, and then turn the printer ON again.
"Installing the Paper Feeder"
<Cause 3> The connector of the optional paper feeder is disconnected.
Solution
Turn the printer OFF, unplug the power plug from the AC power outlet and contact your local authorized Canon dealer for servicing.
<Cause 4> A paper feeder that is not for this printer is installed.
Solution
Turn the power OFF, install the paper feeder for this printer, and then turn it ON again.
"Installing the Paper Feeder"

DB Not enough memory.

<Cause> The memory required for processing ran out.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Perform a soft reset using the [Reset] menu, increase the free space of RAM using the following procedure, register the data again, and then print again.
Perform a hard reset or cycle the power of the printer (Be aware that all the data in the memory will be deleted).
Install an expansion RAM module.

Font table is full. <Auto Error Skip>

<Cause> Because of too many fonts to be registered, the field (font table) for registering font information ran out and overflowed.
Solution
Press [  ] (Online) to continue printing. However, the page with which an error is occurring is not printed properly.

Image browse error.

<Cause> Data which this printer cannot process is included in TIFF data.
Solution
This printer cannot print the data. Press [ ] (Online) to cancel the job.

Image data error.

<Cause> Data which this printer cannot process is included in TIFF data or JPEG data.
Solution
This printer cannot print the data. Press [  ] (Online) to cancel the job.

Layout error.

<Cause> The page cannot be laid out because the memory ran out.
Solution 1
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Perform a hard reset to increase available memory or cycle the power of the printer and print again. (Be aware that all the data in the memory that the printer received will be deleted.)
Solution 2
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.

Load paper.

<Cause> Paper of the size specified in the application is not loaded in the paper source (in all the paper sources when [Paper Source] is set to [Auto] and in the specified paper source when the setting is fixed).
Solution 1
Refill or load paper.
Solution 2
Press [  ] (Feeder Selection), then select other paper source for the same paper size or larger paper size.
"[Select Feeder] Menu"

Not enough download memory. <Auto Error Skip>

<Cause> The memory for registering overlay forms and custom characters ran out and overflowed.
Solution 1
Press [  ] (Online) to continue printing. However, the overflowed data cannot be registered.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Increase the free space of RAM using the following procedure, register the data again, and then print it.
Perform a hard reset or cycle the power of the printer. (All the data in the memory will be deleted.)
"Canceling All the Jobs (Hard Reset)"
Install an optional expansion RAM module.
"Installing RAM/ROM"

Not enough font memory.

<Cause> The font memory of this printer ran out.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Decrease the number of the fonts to be downloaded onto this printer in the PS printer driver, then print again.

Not enough image memory.

<Cause> The image memory of this printer ran out.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Decrease the number of the images to be downloaded onto this printer in the PS printer driver, then print again.

Not enough macro memory.

<Cause> The macro memory of this printer ran out.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Decrease the number of the macros to be downloaded onto this printer in the PS printer driver, then print again.

30 Not enough memory. <Auto Error Skip>

<Cause 1> The work memory ran out while the system was processing the data.
Solution
Press [  ] (Online) to continue printing. However, the data with which an error is occurring may not be printed properly.
<Cause 2> (If this error occurred while the printer was on) The amount of memory specified in NVRAM could not be secured because the memory construction was changed (the expansion RAM was removed).
Solution 1
Press [  ] (Online) to continue printing. However, the data may not be printed properly due to the change of the memory construction.
Solution 2
Turn the printer OFF, install the removed RAM, and then print again.
"Installing RAM/ROM"
Solution 3
Set [Extended RX Buffer] to [Off], and then print again.
"[Setup] Menu ([Interface Menu] Options)"

Not enough pattern memory. 

<Cause> The pattern memory of this printer ran out.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Decrease the number of the patterns to be downloaded onto this printer in the PS printer driver, then print again.

Not enough spool memory. <Auto Error Skip>

<Cause> Because spool memory ran out, the printer cannot print.
Solution 1
Press [  ] (Online) to continue printing. However, the page with which an error is occurring is not printed.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Specify the paper size smaller, and then print again.
Solution 3
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Set [Gradation Level] to [Standard], and then print again.
"[Setup] Menu ([Quality Menu] Options)"
Solution 4
If [2-Sided Printing] is set to [On], specify [Off], and then print again.
"[Setup] Menu ([Paper Source Menu] Options) "
Solution 5
Change the setting for [Halftones], and then print again.
"[Setup] Menu ([Quality Menu] Options)"
Solution 6
Install an optional expansion RAM module, then print again.
"Installing RAM/ROM"

Not enough system memory. <Auto Error Skip>

<Cause> The work memory required for the printer process ran out while the system was processing the data (mainly the graphics data and text data).
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Increase the free space of RAM using the following procedure, and then print it.
Perform a hard reset or cycle the power of the printer. (All the data in the memory will be deleted.)
"Canceling All the Jobs (Hard Reset)"
Install an optional expansion RAM module.
"Installing RAM/ROM"

Not enough work memory. <Auto Error Skip>

<Cause> The work memory for each print mode cannot be secured.
Solution 1
Press [  ] (Online) to continue printing. However, the data with which an error is occurring is not printed properly.
IMPORTANT
When continuing printing by pressing [  ] (Online)
Be aware that the data of overlay or macro that is already registered may be deleted.
Solution 2
Perform the following procedure.
1.
Perform a soft reset.
"Canceling the Process Currently Being Performed (Soft Reset)"
2.
Increase the free space of RAM using the following procedure, and then print again.
Perform a hard reset or cycle the power of the printer. (All the data in the memory will be deleted.)
"Canceling All the Jobs (Hard Reset)"
If you are using the UFR II printer driver, install an optional expansion RAM module. (However, the problem may not be solved.)
"Installing RAM/ROM"

Output tray is full. Remove paper.

<Cause> The output tray is filled to the limit.
Solution
Remove the paper in the output tray.

Paper is jammed.

<Cause> Paper is jammed inside the printer.
Solution
Remove the jammed paper and set the paper cassette and covers to the original position. If the printer is not online, press [  ] (Online).
"Clearing Paper Jams (Multi-purpose Tray)"
"Clearing Paper Jams (Paper Cassette)"
"Clearing Paper Jams (Duplex Unit)"
"Clearing Paper Jams (Inside the Output Area)"
"Clearing Paper Jams (Inside the Front Cover)"
IMPORTANT
If paper jams occur at multiple areas at the same time, the areas appear in the display by rotation.
If you removed the jammed paper without opening any cover, be sure to open and close the front cover once, and then press [  ] (Online).

Pseudo-scalable coordinate error. <Auto Error Skip>

<Cause> There is a character in which the number of coordinate points on the contour lines exceeds the limitation of a pseudo-scalable font.
Solution
Press [  ] (Online) to continue printing. However, the characters with which an error is occurring are not printed properly.

Pseudo-scalable size error. <Auto Error Skip>

<Cause> There is some font with its size exceeds the pseudo-scalable font size.
Solution
Press [  ] (Online) to continue printing. However, the characters with which an error is occurring are not printed properly.

Set Cassette n ("n" represents a number.)

<Cause> Cassette 1, 2 or 3 is not installed or installed improperly.
Solution
Install the paper cassette properly.

Set cleaning paper and press the Online key. <Auto Error Skip>

<Cause> The printer is waiting to print cleaning paper.
Solution
Load Letter size or A4 paper in the multi-purpose tray, and then press [  ] (Online).

Set paper below.

<Cause 1> The paper of the size specified in the application is not loaded in the paper cassette or multi-purpose tray, or the paper source for the different paper size is selected.
Solution 1
Load the paper of the size selected in the application (or the one specified by scaling factors).
"Paper Loading and Output"
Solution 2
Press [  ] (Online), and then print to the currently loaded paper forcibly. If you are using the multi-purpose tray, the setting for [MP Tray Paper Size] in the [Select Feeder] menu automatically changes to the paper size specified in the application.
<Cause 2> The paper size specified in the application software is different from the following setting.
[MP Tray Paper Size], [Cassette 1 Size], [Cassette 2 Size] or [Cassette 3 Size] in the [Select Feeder] menu
Solution
Specify the setting properly.
"Registering the Paper Size"
<Cause 3> Improper paper source is selected.
Solution
Specify the setting for [Paper Source] in the [Select Feeder] menu properly.
"[Select Feeder] Menu"
IMPORTANT
When the message <Set paper below.> appears
If the front cover is opened, the message may disappear. However, be sure to follow the directions in the displayed message to change the paper.

Set the toner cartridge.

<Cause> The toner cartridge is not installed or installed improperly.
Solution
Install the toner cartridge properly.
"Toner Cartridge Replacement"

Specified image dataformat is not supported by mode. <Auto Error Skip>

<Cause> The printer received data in format that it does not support during printing in the Raster mode.
Solution 1
Pressing [  ] (Online) continues printing. However, the data may not be printed properly.
Solution 2
Print again from the printer driver for LBP6750dn.

Syntax error.

<Cause> Invalid data is sent when printing using the UFR II printer driver.
Solution 1
Press [ ] (Online) to continue printing from the next data. However, the page with which an error is occurring and its subsequent pages are not printed.
Solution 2
Confirm the data to be printed, then print again.

Version error.

<Cause> You tried to print from a printer driver that is not for LBP6750dn.
Solution
Print from the printer driver for LBP6750dn.

A4 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

A5 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

A7 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

D7 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

D8 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

D9 nn Error ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem is occurring and the printer does not operate properly.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.

F9-nn PWR OFF>ON ("nn" represents two-digit alphanumeric characters.)

<Cause> A problem occurred while the printer was processing print data.
Solution
Cycle the power of the printer. If the message appears even after cycling the power of the printer, note down the message in the display, and contact your local authorized Canon dealer.
0037-0C2