Brother NV750E

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Outline of Mechanism12
Main Mechanisms13
Driveline14
Positions of Electronic Components15
Control System Block Diagram16
Operation of Other Electronic Components17
Disassembly18
Main Parts20
Electrical Parts and Motors32
Thread Release Holder Assy. F Removal38
Tension Releaser Link Removal39
AT Pulse Motor Removal40
Thread Guide Wire Removal41
Bobbin Winder Mechanism42
Bobbin Winder Cover Removal43
BW Holder Supporter Removal44
Rotary Hook Drive Mechanism / Feed and Bobbin Mechanism / Cutter Assy. Mechanism45
Coating Clip Removal46
Lower Shaft a Assy. Removal47
Needle Bar, Presser Mechanism / Upper Shaft Mechanism48
Upper Shaft Removal49
Needle-Presser Module Removal50
Plate Spring Removal51
Needle-Presser Module52
Quilting Foot Removal53
Spring Removal54
Needle Holder Guide Assy. Removal55
Lever AB Assy. Removal56
Thread Guide Plate Removal57
Presser Foot Lifter Removal58
Thread Take-Up Counter Weight Removal59
Thread Take-Up Lever Link Removal60
Feed Module61
Needle Plate a Removal62
Photo Diode Holder Assembly Removal63
Lower Shaft B Assy. Removal64
Stopper Plate Block Assy. Removal65
Thread Cutter Module66
Thread Cutter Frame Assembly Removal67
Cutter Holder Assembly Removal68
Thread Cutter Lever Assy. Removal69
Embroidery Parts70
YPM Cover Removal71
ES Main Cover Assembly Removal72
Lead Wire Assembly (EMB Unit FCOMB) Removal73
Lock Release Lever Assembly Removal74
Groove Cover Removal75
XY Carriage Unit Removal76
X Tension Pulley Assembly Removal77
X Initial Shutter Removal78
Y Slider Removal79
Y Carriage ASSY Disassembly80
Y Tension Pulley Assembly Removal81
Y Driving Gear Pulley Assembly Removal82
Assembly84
Needle Bar, Presser Mechanism / Upper Shaft Mechanism85
Plate Spring Attachment86
Needle-Presser Module Attachment87
Pulley Attachment88
Connecting the Needle-Presser Module and Upper Shaft89
Rotary Hook Drive Mechanism / Feed and Bobbin Mechanism /Cutter Assy. Mechanism90
Assembling the Lower Shaft a Assembly91
Lower Shaft a Attachment92
Thread Cutter Module Attachment93
Bobbin Winder Mechanism94
Bobbin Winder Shaft Stopper (Bobbin Winder Assembly Holder) Assembly95
BW Holder Supporter Attachment96
Bobbin Winder Cover Attachment97
Thread Tension Mechanism98
Spring Tape Attachment99
Thread Take up Spring Attachment100
Tension Disk Attachment101
Thread Tension Gear Attachment102
Tension Releaser Link Attachment103
Thread Release Holder Assy. Attachment104
Tension Plate Attachment105
Thread Guide Cover Assembly106
Electrical Parts and Motors107
Belt Guard Attachment108
Main Motor Assembly Attachment109
Connector Holder ASSY Assembly and Attachment110
PBC Unit LED Lamp-FL Attachment111
Main Parts112
Handle Assembly and Attachment113
Front Cover Assembly (SV Cover Attachment)114
Front Cover Assembly (Spool Pin Attachment)115
Touch Panel Assembly Attachment116
Main PCB Assembly Attachment117
Front Cover Attachment118
Free Arm Cover Attachment119
Face Plate Assembly120
Embroidery Attachment121
Needle-Presser Module122
Shaft Bushing Assembly Attachment123
Presser Bar Attachment124
Thread Take-Up Counter Weight Attachment125
Thread Take-Up Lever Assy. Attachment126
Presser Foot Lifter Attachment127
Threader Hook Assy. Attachment128
Thread Guide Plate Attachment129
Lever AB Assy. Attachment130
Lever a Spring Attachment131
Needle Bar Assembly Attachment132
Spring (for Needle Bar Supporter Assy.) Attachment133
Quiltintg Foot Attachment134
Feed Module135
Bushing Supporter Assy. Assembly136
Assembling the Lower Shaft B Assy137
Lower Shaft B Assy. Attachment138
Outer Rotary Hook Assy. Attachment139
Cord Holder Attachment140
Needle Plate a Assy. Attachment141
Thread Cutter Module142
C Pulse Motor Attachment143
Assembling the Thread Cutter Lever Assy144
Assembling the Thread Hook Assy145
Sensor Holder Attachment146
Thread Cutter Frame Assembly Attachment147
Embroidery Parts148
Y Sensor PCB Assembly Attachment149
Y Tension Pulley Assembly Attachment150
Y Pulse Motor Assembly Attachment151
Y Carriage Unit Attachment152
Cord Guide Attachment153
X Driving Gear Pulley Attachment154
X Tension Pulley ASSY Attachment155
Oil Guard Plate Attachment156
X Belt Presser Removal157
Rubber Cushion and Rubber Cushion Cover Attachment158
ES Base Cover Unit Attachment159
Groove Cover Attachment160
X Carriage Cover Attachment161
Adjustment162
Needle Point Damage163
Starting Test Mode164
List of the Test Mode165
Touch Panel166
Timing Belt Tension167
Motor Belt Tension168
Fine Tension169
Upper Thread Tension170
Needle Left/Right Position171
Needle Bar Rising172
Needle Bar Height173
Clearance between Needle and Rotary Hook Point174
Needle Threader175
Presser Bar Height176
Bobbin Winder177
Needle and Presser Foot Front/Back Position178
Inner Rotary Hook Bracket Position179
Inner Rotary Hook Assy. (Lower Thread) Tension180
Belt Tension (Embroidery Unit)181
Embroidery Unit Center Position182
Failure Investigation for Electronic Parts184
Error Message List185
The Power Does Not Come on186
Pulse Motors Do Not Return to Starting Position188
The Touch Panel Does Not Work189
LCD Backlight Does Not Come on190
Main Motor Does Not Turn191
Main Motor Rotation Abnormal193
Cannot Sew Pattern Correctly194
Thread Tensioning Is Not Correct195
Thread Cutter Does Not Work Normally196
Bobbin Winding Cannot be Done197
Lamp Does Not Come on198
Bobbin Thread Detection Does Not Work Normally200
Upper Thread Sensor Does Not Work Normally201
Card Cannot be Used Normally202
Embroidery Unit Does Not Operate Normally204
Error Is Displayed207
Replacement of Main PCB Assy or Motor PCB Assy210
Correspondence Table of "Model" and "Printed-Circuit Board"211
Repair Manual212
Special Instructions of Wiring222
Needle Bar Module Wiring223
Rotary Hook Module Wiring226
Motor PCB Assembly Wiring227
Front Cover Assembly Wiring230
Embroidary Unit Assembly Wiring231

Brother NV750E - Page 2

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