3-15
Confidential
Back end
Back end components and their main roles
- Damper assemblies
Each assembly has two roles: dampening the ink pressure fluctuations* in the ink supply tube
as the carriage moves and collecting air bubbles that grow in the ink flow path.
* Ink pressure fluctuations: As the head/carriage unit travels, inertia means that the ink remains in the
same place, temporarily raising or lowering the pressure in the right chamber.
- Air vent unit
At regular scheduled intervals, this vents any air bubbles that have accumulated in the damper
assemblies. The air vent rods in the maintenance unit push up the shut-off valves, opening the
air vent flow paths.
Damper ASSY (Yellow)
Shut-off valves
Air vent unit
(Air vent cap)
Damper ASSY (Cyan)
Damper ASSY (Black)
Damper ASSY (Magenta)
Right chamber
Right
chamber
Right
chamber
Right
chamber
Left chamber
Left chamber
Left chamber
Left chamber
Air bubbles
Air bubbles
Air bubbles
Air bubbles
(BackEnd_E)
(Air vent rods)
(A part of maintenance unit)
Summary of Contents for DCP 385C - Color Inkjet - All-in-One
Page 7: ...v Confidential SAFETY PRECAUTIONS ...
Page 8: ...vi Confidential ...
Page 9: ...vii Confidential ...
Page 10: ...viii Confidential ...
Page 11: ...ix Confidential ...
Page 12: ...x Confidential ...
Page 13: ...xi Confidential ...
Page 14: ...xii Confidential ...
Page 15: ...xiii Confidential ...
Page 16: ...xiv Confidential ...
Page 17: ...xv Confidential ...
Page 18: ...xvi Confidential ...
Page 19: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Page 24: ...1 4 Confidential 1 2 CONTROL PANEL Machine MFC990CW 790CW 9 7 8 6 1 2 3 4 5 ...
Page 25: ...1 5 Confidential ...
Page 26: ...1 6 Confidential MFC490CW 5 6 9 1 4 3 2 8 7 ...
Page 27: ...1 7 Confidential ...
Page 28: ...1 8 Confidential MFC290C 250C 5 6 9 10 1 4 2 8 7 3 ...
Page 29: ...1 9 Confidential ...
Page 30: ...1 10 Confidential DCP585CW 385C 4 3 2 1 5 6 7 8 9 ...
Page 32: ...1 12 Confidential ...
Page 33: ...1 13 Confidential Cordless handset For models with cordless handsets ...
Page 34: ...1 14 Confidential ...
Page 37: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 74: ...2 35 Confidential ITU T Test Chart 1 ...
Page 75: ...2 36 Confidential Brother Chart ...
Page 76: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 123: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Page 127: ...4 2 Confidential 1 Error messages appearing on the LCD On the machine ...
Page 128: ...4 3 Confidential For MFC only ...
Page 129: ...4 4 Confidential For MFC only ...
Page 130: ...4 5 Confidential For MFC only ...
Page 131: ...4 6 Confidential For MFC only ...
Page 178: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Page 182: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 296: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 303: ...7 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 312: ...7 14 Confidential Head Positioning Test Pattern ...
Page 316: ...7 18 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 317: ...7 19 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 319: ...7 21 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 323: ...7 25 Confidential Left and Right Margin Check Pattern ...
Page 324: ...7 26 Confidential Bottom Margin Check Pattern ...
Page 337: ...7 39 Confidential A B C D ...
Page 344: ...Confidential CHAPTER 8 CLEANING ...
Page 348: ...8 3 Confidential Maintenance unit Head wiper Head cap unit cleaning_duplex Rubycel stick ...
Page 349: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Page 359: ...9 7 Confidential Scanning Compensation Data List ...
Page 362: ...9 10 Confidential Test Pattern ...
Page 367: ...9 15 Confidential Configuration List ...
Page 371: ...9 19 Confidential MFC290C 250C DCP585CW 385C DCP185C 165C 145C Key Entry Order ...
Page 387: ...9 35 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 388: ...9 36 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 393: ...9 41 Confidential Vertical Alignment Check Patterns 1 2 ...
Page 394: ...9 42 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 398: ...9 46 Confidential Left and Right Margin Check Pattern ...
Page 399: ...9 47 Confidential Bottom Margin Check Pattern ...
Page 441: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 524: ...App 6 4 Confidential B Power supply PCB 100 V series ...
Page 525: ...App 6 5 Confidential B Power supply PCB 200 V series ...