Baby Lock BLMY Service Manual page 4

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
Operation of other electronic components ......................................1 - 6
Using the threader ..........................................................................1 - 7
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
Free arm cover removal ....................................................................................................................2 - 4
Front cover removal ..........................................................................................................................2 - 5
Operation PCB assembly removal ....................................................................................................2 - 6
Operation PCB holder assembly removal ..........................................................................................2 - 6
Indication panel removal ...................................................................................................................2 - 7
Front cover disassembly (bobbin winder guide assembly removal) ..................................................2 - 7
Front cover disassembly (spool pin holder removal) .........................................................................2 - 7
Front cover disassembly (SS-VR PCB assembly removal) ...............................................................2 - 8
Front cover disassembly (SV keytop removal) ..................................................................................2 - 8
Rear cover removal ............................................................................................................................2 - 9
Handle removal ................................................................................................................................2 - 10
Electrical parts and motors ..............................................................................2 - 11
Power supply unit F removal ...........................................................................................................2 - 12
Assy. pin jack F removal .................................................................................................................2 - 12
Wire assy. removal ..........................................................................................................................2 - 12
PCB Unit LED lamp FL removal ....................................................................................................2 - 13
Base plate sub assy. removal ..........................................................................................................2 - 13
Knee lifter assembly removal ..........................................................................................................2 - 13
Base plate cover and inlet assembly removal ..................................................................................2 - 13
Base rubber removal ........................................................................................................................2 - 14
Timing belt (motor belt) removal ....................................................................................................2 - 14
Motor fan removal ...........................................................................................................................2 - 14
Main motor assembly removal ........................................................................................................2 - 14
Main motor assembly disassembly ..................................................................................................2 - 15
Side feed mechanism removal .........................................................................................................2 - 15
Side feed mechanism disassembly ...................................................................................................2 - 16
Main PCB assy. removal .................................................................................................................2 - 17
NP PCB assy. removal .....................................................................................................................2 - 17
Thread tension mechanism .............................................................................2 - 18
Thread tension assy removal ............................................................................................................2 - 19
Thread guide removal ......................................................................................................................2 - 19
Thread guide cover removal ............................................................................................................2 - 20
Tension plate removal ......................................................................................................................2 - 20
Thread release holder assy. F removal .............................................................................................2 - 20
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