Brother HL-4000CN - Manual (Page 15)

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6.4 Print Quality Problems ......................................................................................................... 6-7
6.4.1 Blank or Completely Black Pages are Output ............................................................................................. 6-7
6.4.2 Faded or Dirty Printouts, White Areas (drop-outs), Creases, Blurs ............................................................. 6-8
6.4.3 Unsatisfactory Printing .............................................................................................................................. 6-12
6.5 Paper Feed Problems........................................................................................................... 6-13
6.6 Others Problems .................................................................................................................. 6-15
6.6.1 Network Problems ..................................................................................................................................... 6-15
6.6.2 Other Problems.......................................................................................................................................... 6-16
6.7 What to Do When an Error Message Appears ................................................................. 6-17
6.8 The Alarm Indicator is On or Flashing ............................................................................. 6-22
6.8.1 The Alarm Lamp is On .............................................................................................................................. 6-22
6.8.2 The Alarm Lamp is Flashing ..................................................................................................................... 6-22
6.9 Forcing the Printer to Print Remaining Data (When Printing is Halted)..................... 6-23
6.10 Cleaning the Density Sensor ............................................................................................... 6-24
CHAPTER 7 PAPER JAMS ......................................................................................................... 7-1
7.1 Clearing Paper Jams ............................................................................................................. 7-1
7.2 Paper Jams in the Multi-purpose Tray ............................................................................... 7-3
7.3 Paper Jams in the Paper Tray.............................................................................................. 7-4
7.4 Paper Jams Between the Print Head Cartridge and the Fuser Cartridge ....................... 7-6
Paper jams around the print head cartridge: ......................................................................................... 7-6
Paper jams around the fuser cartridge: ................................................................................................. 7-8
Paper longer than 355.6 mm (14 in.) jams ........................................................................................... 7-9
7.5 Paper Jams in the Paper Rotator ....................................................................................... 7-10
7.6 Paper Jams in the 2 Tray Module ...................................................................................... 7-11
CHAPTER 8 ROUTINE MAINTENANCE AND CONSUMABLE REPLACEMENT......... 8-1
8.1 Replacing the Toner Cartridges ........................................................................................... 8-1
8.1.1 Toner Cartridge Handling Precautions ........................................................................................................ 8-1
Handling Precautions ........................................................................................................................... 8-1
Storage Precautions .............................................................................................................................. 8-2
8.1.2 Replacing the Toner Cartridges ................................................................................................................... 8-2
8.2 Replacing the Print Head Cartridge .................................................................................... 8-5
8.2.1 Print Head Cartridge Handling Precautions ................................................................................................ 8-5
Handling Precautions ........................................................................................................................... 8-5
Storage Precautions .............................................................................................................................. 8-6
8.2.2 Replacing the Print Head Cartridge............................................................................................................. 8-6
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