5 - 19
Electronic Parts
Failure Investigation for Electronic Parts The lamp at hand does not have light
The work area lamp does not light
• Replace PCB Unit LED lamp FL
or
• Replace PCB Unit LED lamp FR
or
• Replace SS-VR F2 PCB assy.
or
• Replace operation U22 PCB assy.
or
• Replace main NF3D PCB assy.
Reconnect the main NF3D PCB
assy. and PCB Unit LED lamp
FL correctly
Are the main NF3D PCB assy. and
PCB Unit LED lamp FL correctly
connected?
N
Y
Reconnect the SS-VR F2 PCB
assy. and PCB Unit LED lamp
FR correctly
Are the SS-VR F2 PCB assy. and
PCB Unit LED lamp FR correctly
connected?
N
Y
Reconnect the main NF3D
PCB assy. and operation U22
PCB assy. correctly
Are the main NF3D PCB assy. and
operation U22 PCB assy. properly
connected?
N
Y
Replace power supply F
Is the voltage between pins 5 & 4 of
the power supply unit F output
connector 26 V DC?
N
Y
Summary of Contents for BLMY
Page 1: ......
Page 2: ......
Page 3: ......
Page 19: ...1 8 ...
Page 21: ...2 2 Main parts location diagram Main unit ...
Page 30: ...2 11 Disassembly Electrical parts and motors location diagram Main unit ...
Page 37: ...2 18 Thread tension mechanism location diagram Main unit ...
Page 43: ...2 24 Bobbin winder mechanism location diagram Main unit ...
Page 49: ...2 30 Needle bar presser mechanism Upper shaft mechanism location diagram Main unit ...
Page 53: ...2 34 Needle presser module breakout diagram 78 Modules ...
Page 66: ...2 47 Disassembly Feed and bobbin module breakout diagram Modules ...
Page 75: ...2 56 Thread cutter module breakout diagram Modules ...
Page 79: ...2 60 ...
Page 81: ...3 2 Needle bar presser mechanism upper shaft mechanism location diagram Main unit ...
Page 90: ...3 11 Assembly Bobbin winder mechanism location diagram Main unit ...
Page 94: ...3 15 Assembly Thread tension mechanism location diagram Main unit ...
Page 102: ...3 23 Assembly Electrical parts and motors location diagram Main unit ...
Page 109: ...3 30 Main parts location diagram Main unit ...
Page 120: ...3 41 Assembly Needle presser module breakout diagram 78 Modules ...
Page 139: ...3 60 Feed module breakout diagram Modules ...
Page 155: ...3 76 Thread cutter module breakout diagram Modules ...
Page 161: ...3 82 ...
Page 191: ...4 30 ...
Page 226: ......