20 Most Recent Canon PIXMA MP780 All-In-One InkJet Printer - Page 7 Questions & Answers

Have to reset the waste ink counter & replace with new WASTE INK ABSORBER KIT. Only service centre can do the service job.

You may download Canon MP780 drivers and software from here.

The black print head is clogged. The reason why the black is clogged and not the photo black or any colors is that the black is pigment ink and the photo black and colors are dye based ink. The pigment ink is a particulate formulation that binds up when water is evaporated out of the ink. You need to buy a new print head the fix the problem. You can buy a new print head for $75 from precision roller.com.

How old is the one printer?. When more than 2 years of software This is a bug

You don't empty it, it needs to be replaced and having the service manual I can tell you it's not an easy thing to do.

Try to reseat the print head:
Reseating the print head is seldomly needed to be done.

1. Press the Open Button (1) to open the Paper Output Tray (2).
   
   
   
   
2. Raise the Scanning Unit until it stops.
   
   
1. Pull and hold the Scanning Unit Lever towards you, then raise the Scanning Unit.
   
2. The Print Head Holder moves to the middle.
   
   
   
   
3. Open the Inner Cover 1.
   
   
   
   
4. Open the Inner Cover 2.
   
   
   
   CAUTION:
   
   a. Do not try to manually move or stop the Print Head Holder.
   
   b. Do not touch any metal parts.
   
   
5. Press the ink tank's tab (1), then remove it from the slot (2).
   
   
   
   IMPORTANT:
   Handle ink tanks carefully to avoid staining clothing or the surrounding area.
   
   
6. Lift up the lock lever and take out the print head.
   
   
   
   
7. Again, place the print head back in position and press down the lock lever.
   
   
   
   
8. Insert the ink tank into the empty slot on the print head. Press down gently on the ink tank until an audible click is heard. Make sure the ink tank is in the correct slot.
   
   
   
   IMPORTANT:
   
   a. Make sure that the ink tank is inserted in the slot that corresponds to the ink tank's color.
   
   b. If the ink tank is inserted in the wrong slot, perform two head refreshings.
   
   
9. Close the Inner Cover 2.
   
   
10. Close the Inner Cover 1.
    
    
11. Pull the Scanning Unit Lever towards you to close the Scanning Unit.
    
    
12. Align the print head position after the print head is installed. You can align the print head position either automatically or manually. When automatic alignment does not work well, align the print head position manually.
    
    

Automatically Aligning The Print Head Position:

1. Load A4-or letter-size plain paper in the paper support tray. Auto alignment cannot be performed when the Feed Switch is set to [CASSETTE].
   
   
2. Press <Menu> repeatedly until [MAINTENANCE] appears.
   
   
3. Press left or right arrow to select [AUTO HEAD ALIGN].
   
   
4. Press <OK>. The print head position alignment pattern prints.
   
   
5. Check the printed pattern. If the printed pattern matches the illustration, the print head position alignment is complete.
   
   

Manually Aligning The Print Head Position:
When automatic alignment does not work well, align the print head position manually.

1. Load A4- or letter-size plain paper in the paper support or cassette.
   
   
2. Select the paper source with <Feed Switch> button.
   
   
3. Press <Menu> repeatedly until [MAINTENANCE] appears.
   
   
4. Use left or right arrow to select [ALIGN PRINT HEAD].
   
   
5. Press <OK>. A horizontal pattern is printed.
   
   
6. Beginning from column A on the printout, enter checkmarks in the patterns that have the most solid image.
   
   
   
   (1): Bad example (Least solid box)
   
   (2): Good example (Most solid box)
   
   
7. Press left or right arrow to select the pattern number that you checked in column A on the printout in step 6.
   
   (A): Column
   (0): Select pattern number with most solid image
   
   
8. Press <OK>.
   
   
9. Repeat steps 7 and 8 to adjust columns B to L. When all the horizontal patterns are adjusted, you will be prompted to print a vertical pattern [PRINT VERT. PATTERN].
   
   
10. Press left arrow. A vertical pattern is printed.
    
    
11. Beginning from column M on the printout, enter checkmarks in the patterns that have the most solid image.
    
    
    
    (1): Bad example (Least solid box)
    
    (2): Good example (Most solid box)
    
    
12. Press left or right arrow to select the pattern number that you checked in column M on the printout in step 11.
    
    
13. Press <OK>.
    
    
14. Repeat steps 12 and 13 to adjust column N.

I had this exact problem. This printer was given to me, so I didn't have the instructions. I'm pretty sure I damaged it when I tried to open it to change the ink. I didn't realize there was a lever. After I got it open, I had trouble closing it, but eventually I got it to sit down flat. It was after this that the scanning function ceased to work as described by others.

I searched online to find a solution, but was hesitant to buy a repair manual. I read about someone else who took the unit apart. His experience was really a help as he knew just what part to take off. You need to remove the gray panel on the right side of the unit (as you are facing the front). This is the side with the USB port.

There are only three screws to remove. I used a flat head screw driver to gently pry the pieces apart. There are two places it snaps together on the bottom of the unit. I was able to get it apart without damaging anything. Once it's open, you will be able to see there are a few ribbons that connect the top of the unit to the circuit board in the base. For me, two of these had come loose. I simply slid them back in the slots where they seemed to belong and put the thing back together.

It was easier than I imagined and it worked! Good luck.

You need a new printhead. Difficult to find for this old printer. Not cheap (100 EUR). Think you better get a new printer.

Open the covers and look inside. Take a pair tweezers and see if you can pull the small round label off if you see it.

You can download the Canon printer drivers from theirsupport WEB site. Please click on this link and select your model printer todownload : -http://www.usa.canon.com/consumer/controller?act=DownloadIndexAct

Maybe your cartridges are not out of ink. Try it with another game cartridge kit...

PLEASE INSTALL PROGRAM LOPTOP ADOBREADER

Basicallyif you have a wireless router with several laptops and desktop PCs, which canaccess the Internet at the same time, then you have working network withthe laptop and PC.First makesure the laptop and PC have the same Workgroup name(it may already have Workgroup as the Workgroup name, you can change it if you wish). To changethe Workgroup name open Control Panel - System -click on Computer Name tab - click Change and you can change the Computername then select Workgroup and enter orchange the Workgroup name - click OK and OKagain.Nextenable Sharing on both the PC and laptop open My Computer - right click onthe C Drive - click on Sharing tab - tick Sharing this folder on thenetwork - add a Share name to identify the computer/folder (eg Cdrive on PC).If you donot enable sharing on the drives or folders then they will not be available tothe computers on the network.If you havemore drives, then repeat this for the other hard drive and or CD or DVDdrives.Re-boot thecomputers and you will be able to see the computers on your network through MyNetwork Places.