OK I followed the disassemble guide as suggested ..... now the bit with

Step 3 Front Panel Removal I did it exactly and yeah I scratch the motherboard too!!!

But after more more looking when it was apart I found that there where screws in the front feet that held it on

Why did you not just open the bottom battery door instead of pulling the camera apart?

Then replace the ink cartridges and run a cleaning or to and print a few full color pages .... dont panic if the colors dissapears for a while and it comes out blank because the alcohol needs to fully come out but the new ink will flow up the tubes after the alcohol .... this actually took quite a while to start printing colors again but it did get there and a few more cleans once it was and it was fantastic

The Printer has not printed as well for years :)

*Caught off guard not knowing I would need to do this I improvised breaking an old ink cartridge and cutting off the ink nozzle flush with the cartridge so i had the female rubber grommet end and about a ½" piece of plastic tube, I then cut off a bit of spare air hose for my fish tank and got an empty squeeze sauce bottle with a long nozzle and put in some alcohol. I put the plastic tube into the female end and the other end onto the sauce bottle.

Connect it to where the ink cartridge goes in and push the fluid through the line till you see ink / fluid come out of the print head, then do the other lines possibly changing the blotting paper in between colors depending how much mess it makes

Also after putting the new print head on the inkjet nozzle unit lines / tubing is full of air and needs to be primed in order for the ink to flow again because there is a huge air bubble in the print head.

To do this best way is to (if it is back together without pulling it apart):

1) Start the printer to print a page and when it has started while the paper is still under the print head disconnect the power that way the print head is in the middle and not parked on the right side.

2)Put a couple pieces blotting paper or in my case I used folded up paper towel under the print head

3)Take out all the ink cartridges and using a large syringe and a small tube full of a cleaning solution or use a kit that u can buy online.

*Note my new print head did not come with the rubber gasket that the sits between the inkjet nozzle unit and the new print head, remember to look for it and move it to the new one.

So what about the other parts not in your photos that fall ?

The bracket around the speaker and this little white part that fell out as soon as I lifted the back cover a little? can you please give more info