After a lot of scouring through the internet in search of any videos got these files from printer assembling factory.
Some errors common with any printer using similar L1800 setup can be understood from the videos.
Sorry for big file size. do not know how to rip.
How to replace a print head and print head container on an L1800 printer.
https://drive.google.com/drive/folders/1...sp=sharing
Dumps