Question about Canon PIXMA MP780 All-In-One InkJet Printer

3 Answers

Makes a loud clicking noise and reads scanner error.

When I turn the machine on,it makes a loud clicking noise and reads scanner error. Alarm button is flashing. Then it reads "Load paper, press OK" It alternates with the two messages. By the way, there is plenty of paper.

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer
Re: Makes a loud clicking noise and reads scanner error.

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.

Posted on Mar 16, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,198 Answers
Re: Makes a loud clicking noise and reads scanner error.

This is what I found in a scanner-copier. The moving bar of the scanner has a flat tab that fits into a slot that has a very small light in it. That tells the bar to stop. When dust collects in the slot area, the light can't see the tab, and the bar bangs into the end, and the belt jumps and makes noise.. Blow out the dust.

Posted on Mar 28, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,427 Answers
Re: Makes a loud clicking noise and reads scanner error.

Here is the service manual for your printer

it has trouble shooting and step by step repair instructions

Posted on Dec 31, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

9 Answers

Weird noise no copies

does it intake the paper at least??

in some kind of problems paper alone rolls in and out with out copying.

is that the problem.
please clarify

Aug 11, 2008 | Sharp AL-1642CS Copier

2 Answers

I have a CM2320FIX all in one pritner. Scanner

This printer has a definite hardware failure which requires for the formatter board and the scanner assembly to be replaced. Contact hp a soon as possible in order to have an onsite tech dispatched.

you can try doing a hard or reset or nvram:
1. Turn the printer off
2. Hold down the right arrow and the cancel button
3. Reboot the printer while holding the buttons and hold until permanent storage is displayed. Let go of the buttons and wait for the ready message on the display.

Hp's tech support line is 1800-334-5144


May 26, 2010 | HP Laserjet CM2320fxi All-In-One Printer

1 Answer

Scanner mechanism stuck, making loud clicking sound

I've just got this problem after a powercut, whilst it was not being used but on. If you have only had it a few months send it in warranty.
Think I will have to take this apart and see if the scanner cable/ribbon/drive belt is caught on something or been stretched too much and can be replaced at all.
Its like at one end its caught and wont move the scanning head being stuck somehow, caught on something (doubtful tho').

Apr 14, 2010 | Epson Stylus Multifunction Inkjet Printer/...

1 Answer

How fix E42 message?

An E42 is a scanner error. The most like solution is to reconnect the flat ribbon cable from scanner to motherboard of the MP150

Apr 07, 2010 | Canon PIXMA MP150 All-In-One InkJet...

1 Answer

Loud clicking noise

we need to perform a reset, it will take the pritner to the factory settings and this may help you,
the process of reset goes like.
unplug the power cable from the pritner >
then press and hold down the # key and 6 key >
while pressing and holding these keys plug in the power cable back into the printer and wait for 20 secs and then release the buttons..
after this the printer will re-initialize and this might take few minutes.. so wait untill it finishes and follow the onscreeen instruction as well.(if any)

Nov 04, 2009 | HP Officejet J5780 All-In-One InkJet...

2 Answers

My scanner :makes a loud noise when trying to scan or copy

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} I need more information to offer a definitive solution, but I can give you some information that might help diagnose the problem.

Unless you forgot and tried to use it locked…then unlocked it after, it seems unlikely that changing the ink could directly affect anything related to the scanner. So especially if it still scans and now just makes more noise then before, we can reasonably say it isn’t a faulty locking mechanism and that the gears are probably not stripped, which would either stop it or not. So you’re looking at either something simple like the gear assembly being dry, shifted slightly, etc. or the safety by the lock that makes noise to tell you the device is locked is stuck somehow. The one can be tested by removing the little plastic safety that makes the noise when the scanner is turned on and locked; the other you might be able to test with some WD40 and see if it runs quieter.

Aug 24, 2009 | Epson Stylus Photo RX620 All-In-One InkJet...

1 Answer

I have problem with my printer canon IP1700. When I turn it on 2 to 3 minutes after it makes a noise and displays scanner error and the alarm button keeps flashing.So I can not print and do nothing. Would...

You need to count the number of flashes to diagnose the cause. Go to the Canon support site here, enter "error alarm" into the seach field, and you'll get a series of results. Choose the one that applies and it will show you proposed solutions for that error. Do the same searching "noise" and you'll see the option to set quiet mode, among others.
It's also possible it needs to be serviced...
Good luck.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Aug 23, 2009 | Canon Pixma MP500 All-In-One InkJet...

2 Answers

Cannot get Canon PIXMA MP 150 to work at all

salve la mia mi canon mp 150 lo scanner non funziona e mi da errore code 2,250,0

Apr 18, 2008 | Canon PIXMA MP150 All-In-One InkJet...

Not finding what you are looking for?
Canon PIXMA MP780 All-In-One InkJet Printer Logo

1,053 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Printers & Copiers Experts


Level 3 Expert

94198 Answers

old marine
old marine

Level 3 Expert

1317 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Canon Printer and Copier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides