6-36
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 four "c" screws from the main PCB, then lift up the PCB.
(7) Remove screw "d" from the main PCB shield frame, then lift up the shield frame. (The
screw "d" also secures the MJ/PS shield unit.)
"c": 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
(refer to
), and make specified adjustments of various settings
). Make sure beforehand that the head/carriage unit is
mounted.
Ink empty sensor
harness
Ink cartridge detection
sensor harness
Purge cam switch harness
Cap lift cam switch harness
ASF encoder harness
Lower cover
(6_26_BHL9_A4)
Main PCB shield frame
Main PCB
"c"
"c"
"c"
"c"
"d"
SDAA enclosure
Power supply harness
Carriage motor harness
Paper feed motor harness
PF encoder/registration
sensor harness
Main-MJ (EXT) harness
Main-MJ (LINE) harness
ASF motor harness
Summary of Contents for MFC 5490CN - 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: ...Confidential CHAPTER 1 PARTS NAMES AND FUNCTIONS ...
Page 18: ...1 3 Confidential 1 2 CONTROL PANEL 11 10 8 9 7 1 2 3 4 5 6 ...
Page 19: ...1 4 Confidential ...
Page 21: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 28: ...2 6 Confidential 2 2 SPECIFICATIONS LIST ...
Page 29: ...2 7 Confidential ...
Page 30: ...2 8 Confidential ...
Page 31: ...2 9 Confidential ...
Page 32: ...2 10 Confidential ...
Page 33: ...2 11 Confidential ...
Page 34: ...2 12 Confidential ...
Page 35: ...2 13 Confidential ...
Page 36: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 88: ...Confidential CHAPTER 4 ERROR INDICATION AND TROUBLESHOOTING ...
Page 142: ...Confidential CHAPTER 5 HANDLING DATA HELD IN THE MACHINE PRIOR TO REPAIR ...
Page 149: ...Confidential CHAPTER 6 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 240: ...Confidential CHAPTER 7 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 246: ...7 4 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 254: ...7 12 Confidential Head Positioning Test Pattern ...
Page 258: ...7 16 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 259: ...7 17 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 261: ...7 19 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 265: ...7 23 Confidential Left and Right Margin Check Pattern ...
Page 266: ...7 24 Confidential Bottom Margin Check Pattern ...
Page 276: ...7 34 Confidential A B C D ...
Page 279: ...Confidential CHAPTER 8 CLEANING ...
Page 283: ...Confidential CHAPTER 9 MAINTENANCE MODE ...
Page 291: ...9 6 Confidential Scanning Compensation Data List ...
Page 294: ...9 9 Confidential Test Pattern ...
Page 299: ...9 14 Confidential Configuration List ...
Page 314: ...9 29 Confidential Paper Feeding Check Pattern for the Paper Feed Roller ...
Page 315: ...9 30 Confidential Paper Feeding Check Pattern for the Paper Ejection Roller ...
Page 320: ...9 35 Confidential Vertical Alignment Check Patterns 1 2 ...
Page 321: ...9 36 Confidential Vertical Alignment Check Patterns 2 2 ...
Page 325: ...9 40 Confidential Left and Right Margin Check Pattern ...
Page 326: ...9 41 Confidential Bottom Margin Check Pattern ...
Page 356: ...App 2 3 Confidential 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 436: ...App 6 4 Confidential B Power supply PCB 100 V series ...
Page 437: ...App 6 5 Confidential B Power supply PCB 200 V series ...