Brother International 8250P Service Manual - Page 168
Check the connection of the laser diode harness on the main, in the illustration given
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Page 168 highlights
[ 5 ] Print-image related If the received or sent image has any problem, first make a copy with the facsimile equipment. If the copied image is normal, the problem may be due to the remote terminal; if it is abnormal, proceed to the following checks: Trouble (1) Completely blank Action to be taken At the scanner Check the following components: - CIS harness - Main PCB - CIS unit At the printer side l Clean the high-voltage contacts for the developer roller on the drum unit, main cover, and high-voltage power supply PCB. (Contacts ‡ in the illustration given on page VI-21) l Check the connection of the laser diode harness on the main PCB. l Replace the main PCB. (2) All black At the scanner Check the following components: - CIS harness - CIS unit - Main PCB At the printer side l Clean the high-voltage contacts for the grid and corona wire on the drum unit, main cover, and high-voltage power supply PCB. (Contacts ... and † in the illustration given on page VI-21) l Check the connection of the main-high-voltage flat cable. l Replace the drum unit. l Replace the main PCB. VI - 16
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