Brother International 4000CN Users Manual - English - Page 117
See 8.2.2 Replacing the Print Head
UPC - 012502601616
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Symptom Recurring smudges Possible Cause Dirt in the paper path. The print head cartridge or transfer roll cartridge is old or damaged. Action Print several blank sheets. Check the print head cartridge and transfer roll cartridge and replace them as necessary. See 8.2.2 "Replacing the Print Head Cartridge" See 8.3.2 "Replacing the Transfer Roll Cartridge" Ink smears when rubbed. Is the paper damp? Is the media suitable? Hair-like marks appear around black halftone printing The paper was left unwrapped for a long time (especially in a dry environment). Replace the paper. Reference 4.2 "Loading Paper" Replace the media with a recommend size and type, and confirm that your printer driver settings are correct. See 4.1 "Suitable and Unsuitable Paper Types" Replace the paper. See 4.2 "Loading Paper" Shadows appear around areas of dense black printing. Is the media suitable? The transfer roll cartridge is old or damaged. Replace the media with a recommend size and type, and confirm that your printer driver settings are correct. See 4.1 "Suitable and Unsuitable Paper Types" Replace the transfer roll cartridge. See 8.3.2 "Replacing the Transfer Roll Cartridge" 6-9