6-31
Disassembly of the ASF
(8) Pull the lock arm outwards and remove the registration sensor actuator and its spring.
(9) Remove the ASF switch from the latch on the right end of the ASF, then disconnect its harness
from the sensor PCB and take it out of the harness guide.
(10) Unlatch the sensor PCB.
(11) Warp either of the "x" locks on the ASF cover outwards and remove the shield cover.
(12) Remove the pawled bushing from the left end of the ASF core shaft by pulling its pawls
outwards. Pull the pawl of the ASF roller ASSY outwards (in the direction of arrow
) and
pull the ASF core shaft out to the right (
). The ASF roller ASSY will come off.
(13) Remove two screws "d" from the paper tray base and pull it up and to the rear.
(14) Warp the center of the lower chute and disengage the locking tabs on both ends of the lower
chute from the ASF frame.
(15) Remove four screws "e" from the center base flap ASSY. Lightly push the ASSY up from the
bottom and release the two hooks on the rear end of the ASSY.
Shield cover
"d"
"d"
Urethane section
"e"
Pawled bushing
ASF cover
Hooking the ASF
roller spring
(Viewed from the rear)
ASF roller ASSY
ASF roller spring
Lower chute
Latch
Lock
arm
Actuator spring
Sensor PCB
Registration
sensor actuator
ASF switch harness
Gear 50
ASF core shaft
"x"
"x"
Pawl
ASF roller ASSY
Center base flap ASSY
Paper tray base
Latch
"d" and "e": Taptite, bind B M2.6x8
Содержание MFC-4820C
Страница 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL MFC4820C MFC4420C ...
Страница 6: ...CHAPTER 1 PARTS NAMES FUNCTIONS ...
Страница 13: ...CHAPTER 2 SPECIFICATIONS ...
Страница 19: ...2 5 2 1 4 Environmental Conditions ...
Страница 26: ...CHAPTER 3 SETTING UP OF THE MACHINE ...
Страница 29: ...3 2 3 2 UNPACKING THE MACHINE The equipment consists of the following major components ...
Страница 40: ...CHAPTER 4 THEORY OF OPERATION ...
Страница 76: ...CHAPTER 5 ROUTINE MAINTENANCE ...
Страница 84: ...CHAPTER 6 DISASSEMBLY REASSEMBLY ...
Страница 114: ...6 29 6 1 11 Speaker 1 Pull the speaker and its spring out of the lower cover ...
Страница 136: ...CHAPTER 7 MAINTENANCE MODE ...
Страница 145: ...7 8 Scanning Compensation Data List ...
Страница 160: ...7 23 1st sheet 2nd sheet Vertical Alignment Check Patterns and Head Skew Check Pattern ...
Страница 162: ...7 25 Margin Check Patterns ...
Страница 170: ...CHAPTER 8 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 196: ...8 25 3 Pull up the jammed paper to remove it Jammped paper 4 Reinstall the paper tray Paper tray ...
Страница 197: ...MFC4820C MFC4420C Appendix 1 Serial No Descriptions ...
Страница 204: ...App 2 3 Select the folder where the Downloader driver is located then click OK Click Next Click Yes ...
Страница 205: ...App 2 4 Click Finish to return to Windows ...
Страница 209: ...MFC4820C MFC4420C Appendix 3 EEPROM Customizing Codes ...
Страница 212: ...MFC4820C MFC4420C Appendix 4 Firmware Switches WSW ...
Страница 252: ...App 4 40 WSW48 to WSW50 Selector No Function Setting and Specifications 1 8 Not used ...
Страница 253: ...MFC4820C MFC4420C Appendix 5 Re Packing Instructions ...
Страница 255: ...App 5 2 2 Place the machine in the original box with the original packaging material ...
Страница 256: ...MFC4820C MFC4420C Appendix 6 Wiring Diagram ...
Страница 259: ...A Main PCB 1 5 ...
Страница 260: ...A Main PCB 2 5 ...
Страница 261: ...A Main PCB 3 5 ...
Страница 262: ...A Main PCB 4 5 ...
Страница 263: ...A Main PCB 5 5 ...
Страница 264: ...B Driver PCB ...
Страница 265: ...C NCU PCB ...
Страница 266: ...D Control Panel PCB ...
Страница 267: ...E Power Supply PCB ...
Страница 268: ...Feb 03 SM FAX016 8CA602 Printed in Japan ...