Canon LBP7780CX User Manual page 927

If [
Solution 1
print with functions that use the SD card.
Solution 2 Turn OFF the printer, and make sure that the SD card is inserted correctly.
Solution 3 Contact your local dealer for repairs.
56 SD Card error.
<Cause> An SD error has occurred.
Solution 1 Turn the printer OFF, wait for 10 seconds or longer, and then turn it ON again.
Solution 2 Run SD card quick format or standard format.
Solution 3 Contact your local dealer for repairs.
Set below paper.
<Cause 1> The paper of the size specified in the application is not loaded in the paper drawer or multi-
purpose tray, or the paper source for the different paper size is selected.
Load the paper of the size selected in the application (or the one specified by scaling factors).
Solution 1
"Paper Loading and Output"
Press [
Solution 2
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], [Drawer 1 Size] or [Drawer 2 Size] in the [Select Feeder] menu
Specify the setting properly.
Solution
"Registering the Paper Size and Type"
<Cause 3> Improper paper source is selected.
Specify the setting for [Paper Source] in the [Select Feeder] menu properly.
"[Select Feeder] Menu"
Solution
When the message <Set below paper.> 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 cleaning paper and press the Online key. <Auto Error Skip>
<Cause> The printer is waiting to print cleaning paper.
Load Letter size or A4 paper in the multi-purpose tray, and then press [
Solution
Syntax error.
] ( : Online) is pressed, settings that do not use the SD card are activated. However, you cannot
] ( : Online), and then print to the currently loaded paper forcibly. If you are using the multi-
IMPORTANT
] ( : Online).