Disassembling The Printer
Disassemble the printer. Almost all of them are similar to disassemble. First you have to remove the printer housing, by opening its cover, moving the paper type adjustment lever (a.k.a. PG, Platen Gap) towards (+) side, than removing the two or four screws available on the printer top.
After removing the cover, you have to remove two bushings, one at each side of the carriage guide shaft. TAKE NOTES OF THE POSITION OF THE BUSHINGS BEFORE YOU REMOVE THEM. Those bushings regulate the distance between the print head and the paper (“parallelism”). If you put them back wrong, your printer will print wrong.