Brother International DCP-1400 Service Manual - Page 165
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Trouble (20) Fading (black to white) Water Action to be taken At the printer side • Replace the toner cartridge. • Replace the high-voltage power supply PCB. (21) Gray background ,,-.4 7 (22) Toner specks At the printer side • Instruct the user to use paper of the recommended weight (less than 36 lb./m2). • Clean the toner sensors (LED and light-receiver). • Check the toner sensor harnesses. • Replace the toner cartridge. • Replace the drum unit. • Replace the high-voltage power supply PCB. At the printer side • Instruct the user to use paper of the recommended weight (less than 36 lb./m2). • Replace the toner cartridge. • 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 - 27