Canon imagePROGRAF GP-4000 User Manual
Page 843
1200
Cause
Top cover or print head lock lever is open.
What to Do
Open the top cover and make sure the print head lock lever is closed properly.
Make sure there are no foreign objects caught in the top cover, and then close the top cover.
If this error appears again, close the top cover, turn the power off, wait a moment, and then turn the power
back on.
Note
• If installing a print head, close the top cover after finishing.
843
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