Brother 4000CN Others Problems, Print Quality Problems, 6.10 Cleaning the Density Sensor, Replacing the Print Head Cartridge, Paper Jams in the Multi-purposeTray

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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