5 - 16
Failure Investigation for Electronic Parts
Needle bar cutting and separating does not
occur normally
Needle bar cutting and separating
does not occur normally
Adjust the needle-presser
module assembly
Is the needle bar cutting and
separating operation easy and
smooth?
N
Replace the Z pulse motor
Is the resistance across pins 1-2
and pins 3-4 for the Z pulse motor
connector 5-7
Ω
?
N
Y
Y
Replace main PCB assy.
Replace the Z pulse motor
lead wire.
Is the resistance between pins 1 &
1, 2 & 2, 3 & 4, and 4 & 3 at the
ends of the Z pulse motor lead wire
1
Ω
or less?
N
Y
Summary of Contents for Innov-is NV4000D
Page 1: ......
Page 2: ......
Page 19: ...1 5 Outline of Mechanism Outline of Mechanism Control system block diagram ...
Page 24: ...2 2 Main parts location diagram Main unit ...
Page 40: ...2 18 Power unit motor unit location diagram Main unit ...
Page 46: ...2 24 Thread tension unit location diagram Main unit ...
Page 57: ...2 35 Disassembly Bobbin winder location diagram Main unit ...
Page 66: ...2 44 Needle presser unit needle threader unit upper shaft unit location diagram Main unit ...
Page 71: ...2 49 Disassembly Needle presser module location diagram Modules ...
Page 89: ...2 67 Disassembly Needle thread module location diagram Modules ...
Page 95: ...2 73 Disassembly Feed rotary hook module location diagram Modules ...
Page 109: ...2 87 Disassembly Side feed module location diagram Modules ...
Page 112: ...2 90 Thread cutter module location diagram Modules ...
Page 117: ...2 95 Disassembly Main parts location diagram Embroidery ...
Page 134: ...3 2 Needle presser unit needle threader unit upper shaft unit location diagram Main unit ...
Page 146: ...3 14 Bobbin winder unit location diagram Main unit ...
Page 154: ...3 22 Thread tension unit location diagram Main unit ...
Page 169: ...3 37 Assembly Power unit motor unit location diagram Main unit ...
Page 175: ...3 43 Assembly Main parts location diagram Main unit ...
Page 191: ...3 59 Assembly Thread cutter module location diagram Module ...
Page 198: ...3 66 Side feed module location diagram Module ...
Page 202: ...3 70 Feed rotary hook module location diagram Module ...
Page 227: ...3 95 Assembly Needle thread module location diagram Module ...
Page 236: ...3 104 Needle presser module location diagram Module ...
Page 266: ...3 134 Main parts location diagram Embroidery ...
Page 369: ...6 1 6Special Instructions of Wiring ...
Page 372: ...5 Upper shaft cover 6 Lead wire guide of PCB holder 1 2 3 6 4 ...
Page 378: ...1 Front cover 2 Front cover Tie with a band 6 10 ...
Page 379: ...3 Inverter cover Enlarged picture 6 11 Special Instructions of Wiring ...
Page 381: ......