Outline Of Mechanism; Main Mechanisms; Positions Of Electronic Components; Control System Block Diagram - Brother NX600 Service Manual

1. Outline of Mechanism ........................................................................1 - 1

Main Mechanisms ...........................................................................1 - 2

Driveline ..........................................................................................1 - 3

Positions of electronic components ................................................1 - 4

Control system block diagram .........................................................1 - 5

Main motor control ..........................................................................1 - 6
Pattern generator and thread cutter ................................................1 - 7

Operation of other electronic components ......................................1 - 8

Using the threader ..........................................................................1 - 9
2. Disassembly ........................................................................................2 - 1
Main parts ..........................................................................................................2 - 2
Accessory table removal ..................................................................................................................2 - 3
Top cover removal ...........................................................................................................................2 - 3
Face plate removal and disassembly ..............................................................................................2 - 3
Front thread guard cover removal. ................................................................................................2 - 4
Needle plate B removal and disassembly .......................................................................................2 - 4
Front cover removal .......................................................................................................................2 - 5
Front cover disassembly (operation PCB holder removal) ..........................................................2 - 5
Front cover disassembly (operation PCB assy. disassembly) ......................................................2 - 6
LCD panel removal ..........................................................................................................................2 - 6
Front cover disassembly (bobbin winder guide assembly removal) ...........................................2 - 6
Front cover disassembly (spool pin removal) ................................................................................2 - 7
Front cover disassembly (SS-VR F PCB assy. removal) ..............................................................2 - 7
Front cover disassembly (SV keytop removal) ..............................................................................2 - 8
Rear cover removal ..........................................................................................................................2 - 8
Handle removal ................................................................................................................................2 - 8
Electrical parts and motors ................................................................................2 - 9
Power supply unit F removal ........................................................................................................2 - 10
Assy. pin jack F removal ...............................................................................................................2 - 10
Wire assy. removal .........................................................................................................................2 - 10
PCB Unit LED lamp FL removal .................................................................................................2 - 11
Base plate sub assy. removal ........................................................................................................2 - 11
Knee lifter assy. removal ...............................................................................................................2 - 11
Base plate cover removal. ..............................................................................................................2 - 11
Inlet assy removal ..........................................................................................................................2 - 12
Timing belt (motor belt) removal .................................................................................................2 - 12
Motor fan removal .........................................................................................................................2 - 12
Main motor assembly removal .....................................................................................................2 - 12
Main motor assembly disassembly ...............................................................................................2 - 13
Side feed mechanism removal .......................................................................................................2 - 13
Side feed mechanism disassembly ................................................................................................2 - 14
main PCB assy. removal ................................................................................................................2 - 15
NP PCB assy. removal ...................................................................................................................2 - 15
Thread tension mechanism .............................................................................2 - 16
Thread tension assy removal ........................................................................................................2 - 17
Tension plate removal ...................................................................................................................2 - 17
Thread guide removal ...................................................................................................................2 - 18
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