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
Summary of Contents for HL-4200CN
Page 21: ...CHAPTER I SPECIFICATIONS ...
Page 42: ...CHAPTER II INSTALLATION ...
Page 54: ...II 11 12 Close the front cover Fig 2 27 ...
Page 62: ...CHAPTER III STRUCTURE OF SYSTEM COMPONENTS ...
Page 115: ...CHAPTER IV ASSEMBLY DISASSEMBLY ...
Page 167: ... IV 49 Black Fig 4 88 Holder toner cartridge ASSY 4 ...
Page 204: ...CHAPTER V TROUBLESHOOTING ...
Page 280: ...V 74 10 4 Straightness Fig 5 16 10 5 Magnification Error Fig 5 17 10 6 Registration Fig 5 18 ...
Page 281: ...V 75 10 7 Guaranteed Printing Area Fig 5 19 ...
Page 297: ...CHAPTER VI DIAGRAMS ...
Page 341: ...CHAPTER VII PLUG JACK P J CONNECTOR LOCATIONS ...
Page 346: ...VII 4 2 P J LAYOUT DIAGRAM ...
Page 347: ...VII 5 ...
Page 348: ...VII 6 ...
Page 349: ...VII 7 ...
Page 350: ...APPENDIX ...