Brother International 1920CN Service Manual - Page 199
[ 6 ] PC-driven or video capture-driven printing, Interface with the host computer
UPC - 012502607137
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Trouble (20) Fading (black to white) Action to be taken At the printer side l Replace the toner cartridge. l Replace the high-voltage power supply PCB. (21) Gray background (22) Toner specks At the printer side l Instruct the user to use paper of the recommended weight (less than 36 lb./m2). l Clean the toner sensors (LED and light-receiver). l Check the toner sensor harnesses. l Replace the toner cartridge. l Replace the drum unit. l Replace the high-voltage power supply PCB. At the printer side l Instruct the user to use paper of the recommended weight (less than 36 lb./m2). l Replace the toner cartridge. l Replace the drum unit. [ 6 ] PC-driven or video capture-driven printing Trouble Check: (1) PC-driven printing is impossible. • Interface with the host computer • PC interface cable • Main PCB • Centronics interface (2) Video capture-driven printing is impossible • VC connector PCB • Main PCB • Centronics interface (3) Video printing is impossible. • VC connector PCB • Main PCB VI - 26