Brother HL-4200CN - Page 288

V-82
<All black>
Fig.5-25
Condition:
Print is wholly black.
Initial check:
Parts of different specifications, improper installation, damage, deformation, dirt, foreign
substance attached, etc.
Major parts to be checked:
Print head cartridge ASSY, Fuser ASSY, Transfer roll cartridge ASSY, Scanner ASSY,
MCU HL-4200
Item Check Remedy
1
Faulty transfer
Is the image quality improved if the laser beam exit
window of scanner ASSY is shielded with a sheet?
Replace the MCU HL-
4200
2
Faulty scanner ASSY
Is the image quality improved if scanner ASSY is
replaced?
Replace the scanner
ASSY
3
Faulty print head cartridge ASSY
Is the image quality improved if print head cartridge
ASSY is replaced?
Replace the print head
cartridge ASSY