Brother RH-9820 Service Manual page 9

6-22. Routing the harnesses ....................................................129
6-23. Routing the air tubes........................................................131
《Solenoid valve tubes and functions》........................133
6-24. Lubrication and greasing and routing the oil tubes.......135
7. ADJUSTMENTS.........................
7-1. Adjusting the heights of the spreaders and loopers .......141
7-2. Adjusting the zigzag width (stitch width) ..........................142
7-3. Adjusting the zigzag base line position............................143
7-4. Adjusting the needle and looper timing............................146
7-5. Adjusting the looper stroke................................................147
7-6. Adjusting the height of the needle bar..............................148
7-7. Adjusting the clearance between the loopers and
needle ...............................................................................149
7-8. Adjusting the needle guard ...............................................149
7-9. Adjusting the spreader installation positions....................150
7-10. Adjusting the spreader timing .........................................151
7-11. Adjusting the height of the throat plate...........................152
7-12. Changing the cutting length (Replacing the hammer) .153
7-13. Adjusting the cutting surface of the hammer.................154
7-13-1. Filing the cutting surface of the hammer ..........154
7-13-2. Adjusting the contact between the knife and the
hammer...............................................................155
7-14. Adjusting the axial play of the hammer..........................155
7-15. Making the cutter driving shaft and driving shaft presser
move together..................................................................156
7-16. Replacing the knife and adjusting its position ...............157
7-16-1. Replacing the knife.............................................157
7-16-2. Making fine adjustments to the knife position....158
7-17. Adjusting the cutting pressure ........................................160
7-18. Adjusting the work clamp lift amounts ...........................161
7-19. Adjusting the work clamp positions................................162
7-20. Adjusting the positions of the work clamp plates..........163
7-21. Adjusting the cloth opening amounts.............................164
7-22. Adjusting the upper thread feeding amount..................165
7-23. Adjusting the lower thread feeding amount
<-01 specifications only>.................................................166
7-24. Replacing and adjusting the upper movable knife........166
7-24-1. Replacing the upper movable knife...................166
7-24-2. Adjusting the upper movable knife....................167
7-24-3. Adjusting the position of the thread trimmer lever
bracket .................................................................168
7-25. Replacing and adjusting the movable knife and fixed
knife (for the lower thread and gimp)
<-01 specifications>.........................................................169
7-25-1. Replacing the movable knife and fixed knife....169
7-25-2. Adjusting the cutting pressure ...........................170
7-25-3. Adjusting the meshing amount..........................170
7-25-4. Adjusting the thread nipper assembly and
141
7-25-5. Adjusting the thread handler..............................173
7-26. Replacing and adjusting the movable knife and fixed
knife (for the lower thread and gimp)
<-02 specifications>.........................................................174
7-26-1. Replacing the movable knife and fixed knife ...174
7-26-2. Adjusting the cutting pressure...........................174
7-26-3. Adjusting the movable knife
7-26-4. Adjusting the position of the sub clamp...........176
7-26-5. Differences from older models .........................177
7-27. Adjusting the gimp trailing length
<-02 specifications only> ................................................179
7-28. Adjusting the position of the lower thread presser
<-02 specifications only> ................................................180
7-29. Adjustment of the phase for the take-up roller cam......181
7-30. Adjusting the needle bar and looper base turning
center................................................................................182
7-31. Adjusting the upper thread loosening amount..............183
7-32. Adjusting the lower thread loosening amount...............184
7-33. Adjusting the looper base home position ......................185
7-34. Adjusting the feed base X home position and Y home
position..............................................................................187
7-35. Adjusting the needle up signal home position for the
upper shaft and upper shaft motor.................................189
7-36. Adjusting the upper shaft stop position..........................191
7-37. Installing (replacing) the sub clamp on the left side......192
8. ELECTRICAL MECHANISM......
8-1. Precautions while carrying out adjustments....................197
8-2. Inside the control box and operation panel structure .....198
8-3. Description of fuses ...........................................................199
8-4. Description of connectors..................................................200
8-4-1. Connector positions................................................200
8-4-2. Symptoms when there are poor connections......203
8-5. Troubleshooting .................................................................206
8-5-1. Troubleshooting procedure...................................206
8-5-2. Diagnosis flowchart................................................207
8-5-3. Remedy ..................................................................210
9. ERROR CODES.........................
10. TROUBLESHOOTING .............
RH-9820
opener..................................................................171
installation position..............................................175
197
219
225