O, had a look at Wireshark. After the printer goes to sleep mode, it stop responding to ws-discovery packets.
Tried to point the printer port on PC to static IP, but the printer also does not respond to any printing/scanning request packets, although it does respond to web interface....
Tried to point the printer port on PC to static IP, but the printer also does not respond to any printing/scanning request packets, although it does respond to web interface....