4 of 289
Z-TIMING: Bottom Center & Head-Up 104
Bottom Center (Z Timing) 104
Z-Drive Belt Tensioning 109
Inspection and Adjustment 109
Z-Home Adjustment 111
Procedure to Identify the Closest Needle 112
Needle Case Calibration 115
Fine calibration procedure: 115
Rough Calibration Process: 116
Rotary Hook Support Adjustment 118
Inspection Procedure 118
Adjustment Procedure 120
Color Change, Take-Up, Feeder Housing Assembly 122
Replacement Procedure for Entire Color Change/Take-Up/Feeder Assembly: 122
Color Change Linear Actuator Replacement 124
Replacement Procedures: 124
Thread Feeder Gear Replacement 127
Replacement Procedures: 127
Thread Feeder Optical Sensor PCB Replacement 129
Replacement Procedure: 129
Thread Feeder Radial Bearing Replacement 130
Replacement Procedures: 130
Thread Feeder Stepper Motor Assembly 131
Replacement Procedure: 131
Laser Pointer Assembly 133
Replacing the laser assembly: 133
LED Cluster PCB Replacement 135
Presser Foot Assembly Replacement 136
Reciprocator 139
Replacement Procedure 139
Take-Up Lever Cam Replacement 141
Replacement Procedure 141
Z-Drive Repair and Adjustment 144
Z-Drive Belt Replacement and Tensioning 144
Z-Home Sensor PCB Replacement 146
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