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6-38
Confidential
(3) Disconnect the main-MJ (EXT) harness from the main PCB and release it from the cable
guides provided on the SDAA enclosure.
(4) Press the right and left ends of the SDAA enclosure inwards and remove it from the main
PCB.
(5) Disconnect the main-MJ (LINE) harness (2-wire, yellow) from the main PCB.
(6) Remove two "c" screws from the main PCB, then lift up the PCB.
(7) Remove screw "d" and "e" from the main PCB shield frame, then lift up the shield frame.
(The screw "d" also secures the MJ/PS shield unit.)
"c" and "e": Taptite, cup B M3x10
"d": Screw, pan (s/p washer) M3x8
Assembling Note:
If you replace the main PCB, you need to load programs onto the flash
ROM, restore the machine information that has been backed up in an external memory, and
make specified adjustments of various settings (refer to
). Make sure
beforehand that the head/carriage unit has been mounted.
SDAA enclosure
"c"
"e"
"d"
Main-MJ (EXT)
harness
Main-MJ (LINE)
harness
Carriage motor
harness
ASF motor
harness
Paper feed motor
harness
PF encoder/registration
sensor harness
Power supply harness
Ink empty sensor
harness
Ink cartridge detection
sensor harness
Cap lift cam switch harness
Purge cam switch harness
ASF encoder harness
Main PCB shield frame
Main PCB
"c"
(6_40)
Summary of Contents for MFC 5890CN - Color Inkjet - All-in-One
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: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Page 20: ...1 3 Confidential 1 2 CONTROL PANEL 10 9 7 8 6 1 2 3 4 5 ...
Page 21: ...1 4 Confidential ...
Page 22: ...1 5 Confidential ...
Page 24: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 48: ...2 22 Confidential ITU T Test Chart 1 ...
Page 49: ...2 23 Confidential Brother Chart ...
Page 50: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 96: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Page 100: ...4 2 Confidential 1 Error messages appearing on the LCD ...
Page 101: ...4 3 Confidential ...
Page 102: ...4 4 Confidential Check that you have subscribed to the Caller ID service ...
Page 103: ...4 5 Confidential ...
Page 104: ...4 6 Confidential ...
Page 150: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Page 154: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 245: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 252: ...7 5 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 260: ...7 13 Confidential Head Positioning Test Pattern ...
Page 264: ...7 17 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 265: ...7 18 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 267: ...7 20 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 271: ...7 24 Confidential Left and Right Margin Check Pattern ...
Page 272: ...7 25 Confidential Bottom Margin Check Pattern ...
Page 282: ...7 35 Confidential ADF Copy Chart A B C D ...
Page 286: ...Confidential CHAPTER 8 CLEANING ...
Page 290: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Page 298: ...9 6 Confidential Scanning Compensation Data List ...
Page 301: ...9 9 Confidential Test Pattern ...
Page 306: ...9 14 Confidential Configuration List ...
Page 322: ...9 30 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 323: ...9 31 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 328: ...9 36 Confidential Vertical Alignment Check Patterns 1 2 ...
Page 329: ...9 37 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 333: ...9 41 Confidential Left and Right Margin Check Pattern ...
Page 334: ...9 42 Confidential Bottom Margin Check Pattern ...
Page 364: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 445: ...App 6 4 Confidential B Power supply PCB 100 V series ...
Page 446: ...App 6 5 Confidential B Power supply PCB 200 V series ...