How to fix a broken printer hinge and door sensor (HP Officejet J6488 All-in-One - maybe helpful for other printers too)

Hello inventors, this is my first instructable. Hope that this proves helpful for some people like me, who broke their printer's door hinge and made it piece of plastic of no use......
This guides you how to fix a broken printer door hinge and make the door sensor work. And some cleaning tutorial too....
This is a known bug in old HP officejet printers. When you Open the door in order to change the cartridges or remove a jammed paper after a long time since the door was opened, the door hinges gets stuck and cracks. And the printer becomes useless.There is no solution for this in HP service center as well...!!! no after sale support.....!!
So, if you have not faced this problem yet, so for precaution put some silicon oil between the hinges.
OK, now we need the following stuff:
1. 3 small size door hinges - see the image
2. Epoxy paste
3. industrial glue
4. duck tape
5. Hexalobular star screw driver
6. a screw bridge or any alternative for the broken door sensor clip

Here we go.......

Step 1: Unscrew the broken hinges

unscrew all the screw as shown in image in order to remove the upper part of hinges.
you need a Hexalobular star screw driver or screw driver top of the desired size.
There is a removable hinge plastic cap , then two screws behind it and two screws inside the door......
remove all of 'em.....and then remove the hinge......