Canon Pixma MP800R User Manual page 135

Cause
Print Head nozzles clogged or
shifted
Print quality is not set properly.
The media is loaded with the wrong
side facing upwards.
The paper stack exceeds the
capacity of the Auto Sheet Feeder or
Cassette.
There is some foreign matter in the
Auto Sheet Feeder or Cassette.
The paper source is not configured
properly.
The Paper Output Tray is closed.
Inner Cover is open.
Chapter 12
Open the Scanning Unit (Printer Cover) and check if all ink tanks lamps
light red.
Print the nozzle check pattern to check for uneven ink output.
See "Printing the Nozzle Check Pattern" on page
Ink supply is uneven.
See "Print Head Cleaning" on page
See "Print Head Deep Cleaning" on page
If straight lines are shifted.
See "Aligning Print Head automatically" on page
Be sure to set the [Print Quality] setting to [High] in Windows, or [Fine] in
Macintosh.
1. Open the printer properties dialog box.
2. On the [Main] tab, click [High] for the [Print Quality] setting.
When you cannot choose the [High] setting or when the print quality does
not improve, select [Custom], click [Set] and then adjust the Quality bar
for higher print quality.
1. Open the [Print] dialog box.
2. Select [Quality & Media] from the pop-up menu and then click [Detailed
Setting].
3. Drag the [Print Quality] slide bar to the [Fine] end.
Load the media with the correct side facing upwards.
If the paper stack exceeds the paper limit mark, or exceeds the capacity of
the Auto Sheet Feeder or Cassette, reduce the amount of paper. See
"Recommended Paper and Requirements" on page
Check and remove any foreign matter.
Make sure that the paper source in which the paper is loaded is correctly
configured. See "Changing the Paper Source" on page
Press the Open Button to open the Paper Output Tray.
Close Inner Cover then press [OK] on the machine.
Action
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Troubleshooting 133