![Brother MFC-5100C Service Manual Download Page 78](http://html.mh-extra.com/html/brother/mfc-5100c/mfc-5100c_service-manual_53964078.webp)
4-37
4.1.12 Relay PCB and PCB Plate
(1) Disconnect the three relay harnesses (Main 1 through Main 3) from the relay PCB.
(2) Pull out the relay PCB cover.
(3) Remove screw "a" and take out the relay PCB.
(4) Remove screw "b" if not removed on page 4-23.
(5) Remove screw "c" from the USB I/F connector to release the PCB plate and then pull up the
PCB plate.
(6) To remove the main PCB in the next subsection, remove two screws "d" from the parallel I/F
connector.
Main 3 relay
harness
"b"
Grounding wire
(From the ADF drive unit)
PCB plate
"d"
"d"
"c"
Lower cover
Main 1 (white leads, 12-pin)
Main 2 (red leads, 11-pin)
Main 3 (white leads, 9-pin)
Relay
harnesses
Relay PCB cover
Relay PCB
"a"
Relay
PCB
Main 1 relay harness
Main 2 relay
harness
Grounding wire
(From the relay PCB)
"a": Taptite, cup S M3x6
"b": Screw, bind B tite M4x16
"c" and "d": Screw, pan M3x6
Summary of Contents for MFC-5100C
Page 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL MFC5100C MFC590 ...
Page 4: ...CHAPTER 1 GENERAL DESCRIPTION ...
Page 11: ...CHAPTER 2 INSTALLATION ...
Page 19: ...CHAPTER 3 THEORY OF OPERATION ...
Page 39: ...CHAPTER 4 DISASSEMBLY REASSEMBLY LUBRICATION AND ADJUSTMENT ...
Page 114: ...4 73 7 Paper ejection roller gear and PF roller gear 8 Paper feed roller and PF spring ...
Page 116: ...4 75 11 Purge shaft ...
Page 119: ...4 78 Head Positioning Test Pattern ...
Page 120: ...CHAPTER 5 MAINTENANCE MODE ...
Page 127: ...5 6 Scanning Compensation Data List ...
Page 141: ...5 20 Vertical Alignment Check Pattern ...
Page 148: ...CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING ...
Page 173: ...MFC5100C MFC590 Appendix 1 EEPROM Customizing Codes ...
Page 176: ...MFC5100C MFC590 Appendix 2 Firmware Switches WSW ...
Page 220: ...A Main PCB 1 6 ...
Page 221: ...A Main PCB 2 6 ...
Page 222: ...A Main PCB 3 6 ...
Page 223: ...A Main PCB 4 6 ...
Page 224: ...A Main PCB 5 6 ...
Page 225: ...A Main PCB 6 6 ...
Page 226: ...R27 100 R28 100 R29 100 R30 100 B Relay PCB ...
Page 227: ...C NCU PCB ...
Page 228: ...D Control Panel PCB 1 2 ...
Page 229: ...D Control Panel PCB 2 2 ...
Page 230: ...E Power Supply PCB ...