One of the funny things in my professional experience – was one of the electrical power outlets in the laboratory for the repair of PC peripheral devices, a couple of servers, and several test benches were sitting on. As aRead More
Practically – I started from scratch in printer repair. I was given to repair the killed printers sitting on the telephone line, the modem sitting on the logic board did not fail as often as the rest components.
First of all, I made a voltage table in the connectors in the chain: power supply – logic board, power supply – driver board for a working printer.
For example, the voltage for proper operation should be 5 volts for the logic board, and 12 volts for the drive board.