One day, I found the printer, the one that connects to my PC, is broken. I can not open the scan cover. The printing function is fine. I am wondering what happened to it.
Here is the back look of Canon imageClass MF4450.
I tried to open the cover and saw the broken part of MF4450.
I googled it and found it is ADF Hinger.
ADF means the automatic document feeder. It is very harder to find it on the market. But I am lucky, I order it at AliExpress.com and the price is still reasonable.
The price of $6.97 is for a pair of hinges.
I ordered it on Jan 18. and later I received it on Feb 4. I would like to make another post about how I replace the broken part and fix the problem.