I have a 5740. There's a document stuck but I can't cancel it. The right hand side light is blinking. I have troubleshooted but it does not correct it. I have rebooted my computer twice, but I don't know how to reboot the printer itself other than turning it off, but that doesn't resolve the problem either. Can you help?

Go to Control Panel---> Printers-----> Double-Click on your printer, highlight the job by clicking on it and Right-Click on the job and select "Cancel" or "Cancel All Documents." You can also click do the same by clicking the 'Document" option on the toolbar. If the documents will not cancel. You will need to uninstall the printer and its drivers and reinstall them making sure to install the drivers before connecting the printer and only connecting the printer when prompted to by the installation wizard.

Found this today (and it worked):
canon waste tank reset for canon i70

Below is a procedure that in most cases should resolve a Canon i70 waste tank issue

1) Close the print head cover, and turn off the printer. While pressing the Resume/Cancel button, press the Power button.

(Do not release the buttons. The LED lights in green to indicate that a function is selectable.)

2) While holding the Power button, release the Resume/Cancel button.

(Do not release the Power button.)

3) While holding the Power button, press the Resume/Cancel button 3 times, and then release the Power and Resume/Cancel buttons.

(Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.)

During initialization, the LED blinks in green.

4) When the LED stops blinking and lights in green, press the Resume/Cancel button 4 times (Each time the Resume/Cancel button is pressed, the LED lights alternately in either orange or green, starting with orange.)

After the function (menu) is selected, press the Power button. The LED lights in green, and the selected function is performed. (When the operation completes, the printer returns to the menu selection mode automatically.)

*** 4 times Green Waste ink counter resetting Both the main and borderless print waste ink counters are cleared.

Canon i70 InkJet Photo Printer

Printer lights can can blink for more than one reason, so the solution can vary. These solutions need not be performed in a specific order, but solutions for the most common issues are presented first.
Blinking lights are often accompanied by an error message on the computer screen, which might help determine the solution.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01082964&lc=en&dlc=&cc=us&product=305961

samsung ml1640 laser red and green light blinking continuously and printing not happening

refer the web link mnetioned below.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00169535&cc=us&lc=en&dlc=en&product=357202

Sounds like it is expecting a different size paper than you have in it. In the item that you are trying to print confirm the page size. If it is a document that you download or someone sent you it could be in a different page size. To cancel it you will likely have to go into the printer settings and delete it from there then power off the printer and power it back on, this should clear the job. Windows will keep trying to print the job until it is successful or deleted. To see the print jobs double click on the printer icon then just highlight and delete it.

i think ur talking about the black ink cartridge...ideally it should not get stuck but plz check if there is any plastic piece which is blocking it or there is any latch.If it gets stuck frequently its time for u to get a new printer.

Follow HP's instruction listed at the link below.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00405441&cc=us&lc=en&dlc=en&product=445440&dlc=en&lang=en
Post back if this did not help.
& please vote...

have you unpluged for 5-10mins? check manual for fault codes..genrally in rear. Sorta sounds like a drain problem...maybe...very common.

Fiend your solution direct from hp. Here is your solution...


http://www.hp.com/printer/prob676ijt65/solution

a11