20 Most Recent Canon PIXMA MP780 All-In-One InkJet Printer - Page 9 Questions & Answers

Alcohol was not good to clean cartridge nozzle. I recommend to use cartridge cleaner and deep cleaning after that

I believe that is the size of "legal paper". Yes you can print on that size paper. Follow this string. Go to start, all programs, Canon utilities, my printer, printer settings, locate paper size on the Main tab and select legal. This will set the printer to the wanted paper size.

Here is the Canon WEBSITE for the PIXMA. Your can find manuals, drivers, specifications, etc. here.

This is where the serial number is located, look here.
Locate the Serial Number The serial number of the PIXMA MP750 / MP780 is located at the back of the printer towards the bottom edge, as shown below.

• The serial number for the MP750 starts with three letters (AGA) and ends with six numbers. Example: AGA012345
  
• The serial number for the MP780 starts with three letters (AHB) and ends with six numbers. Example: AHB012345
  
  

good luck

Go here

The print heads are probably clogged: try running a few 'cleaning' cycles (with genuine Canon cartridges preferably).

Hi, If you didn't used your inkjet printer for a long time the most common problem is that the nozzles of the print head are clogged with ink, so no ink can go down to the paper and that's why you see a blank sheet of paper. What you can do is Deep Head Cleaning from the printer properties menu a couple of times. If this does not help you will need to replace the print head

Hello!
Please remove your cartridge and replace again. If it doesn't work please try another cartridge and find the solution.... thanks

hello!
Your problem is about to change Printer's head. i.e. a place where you put your cartridge... thanks

you can call your local canon manufacture and they can send you one or go to www.cannon/drivers.com and enter the model and install the latest driver from there

I got no help from you. Called Canon USA and got immediate assistance, which resolved the problem. Please don't contact me anyomre. Thank you.

Here is your Cartridge with picture...

The customer is seeing vertical lines in the colour prints. The problem happens if the print head is dirty or faulty. The customer had already run maintenance cycles. So the only option left is to take out the colour cartridges and clean the print head with a tissue paper or lint free cloth. He has to clean carefully but thoroughly. He is trying that, This will solve his problem.

GO INTO PRINT PROPERTIES, CLICK ON...PREFERENCES AND SET YOUR SPEED UNDER QUICK PRINT.

HOPE THIS HELPS!

Error code 357 has to do with the print head & waste tank.

You can try and fix it yourself by performing the following:

-Turn off the printer.
-Open the top & both doors.
-Manually slide the ink cartridge carrier to the left.
-When you look back where the ink parks you will see a rectangular white assembly with 1 long & 2 short plastic tabs standing vertically.
-clean these carefully with a cotton swab & rubbing alcohol. They don't have to be perfect.
-NOW HERE IS THE HARD PART. Carefully reach around to the back of this assembly & move it forward. It should slide front to back easily. If it doesn't it's probably stuck with some dried ink.
Once this is free, slide the ink tray back, close evedrything up & start your printer.
The problem should disappear

Hi vwang,

Here's what you can try to resolve the issue of getting "Wrong Cartridge":

1. Turn of your printer and unplug the power cord then, unplug it from your computer.

2. Remove all the ink cartridges then the print head.

3. Clean the print head using a rubbing alcohol. Wipe the back and bottom of your printhead.

4. Lastly, put everything back and turn on your printer.

If still you're getting the same error message after doing the steps above then you will have to install new print head to your printer.

Hope this helps.

Thank you for using FixYa.