169
11-2-5 Trouble shooting (Upper thread comes off from needle hole)
Trouble Factor Cause of trouble and measure
Page
Upper thread
Mechanical
1. Is keeper in motion?
comes off 1-1 Check if cable was cut or there is something unusual.
from needle 1-2 In case solenoid is in trouble, replace. 3-6-7
hole 1-3 In case LCD-CE board is in trouble, replace.
1-4 In case CONT-D2 board is in trouble, replace. 4-2
2. Is keeper put in right place?
2-1 Put it as specified.
3-6-9
2-2 Modify bent of keeper.
2-3 Adjust it again if movement is not smooth. 3-6-7
3. When thread trim action, please check upper thread wind keeper or not.
3-1 If dose not wind, please adjust keeper position again 3-6-8.
4. Is magic-tape on thread catch holder not worn?
4-1 Replace magic-tape. 3-3-11
5. Does bobbin thread holder hold bobbin thread?
5-1 Adjust pressure when contacting moving knife.
3-6-6
5-2 In case bobbin thread holder is in trouble, replace.
5-3 Clean bobbin thread holder.
6. No error in thread cut (2 threads cut)?
6-1 Check and adjust thread cut timing.
3-6-1
6-2 Position moving knife as specified.
3-6-5
6-3 Check and polish burr or scratch on moving knife.
6-4 In case moving knife is in trouble, replace.
3-6-2
7. Are clearance between needle and rotary point and needle height are proper?
7-1 Adjust clearance between needle and rotary hook as specified.
3-5-1
7-2 Adjust needle depth.
3-3-6
8. Doesn't thread catch hook cut upper thread?
8-1 Polish burr on hook.
8-2 In case hook is in trouble, replace.
9. Does thread catch hook hold upper thread?
9-1 Check if cable was cut or there is something unusual.
9-2 In case pulse motor is in trouble, replace.
9-3 Adjust fixing position.
3-2-12
9-4 If hook is bent, modify.
9-5 In case hook is in trouble, replace.
9-6 In case LCD-CE board is in trouble, replace.
9-7 In case CONT-D2 board is in trouble, replace. 4-2
( ) ----- Reference instruction book
Summary of Contents for HCD2-1501-40
Page 1: ...Maintenance Manual for Embroidery Machine HCD2 1501 40 Version 2 3 HappyJapan Inc ...
Page 10: ...10 HSA90311 Shell alvania EP Grease2 100g Page 31 33 36 M0404342 Needle height gauge Page 52 ...
Page 150: ...143 10 1 Electrical connection diagram before Rev A for LCD CE board 1 3 ...
Page 151: ...144 10 1 Electrical connection diagram before Rev A for LCD CE board 2 3 ...
Page 152: ...145 10 1 Electrical connection diagram before Rev A for LCD CE board 3 3 ...
Page 153: ...146 10 2 Electrical connection diagram before Rev A for LCD CE U LCD CE MX board 1 4 ...
Page 154: ...147 10 2 Electrical connection diagram before Rev A for LCD CE U LCD CE MX board 2 4 ...
Page 155: ...148 10 2 Electrical connection diagram before Rev A for LCD CE U LCD CE MX board 3 4 ...
Page 156: ...149 10 2 Electrical connection diagram before Rev A for LCD CE U LCD CE MX board 4 4 ...
Page 157: ...149a 10 2a Electrical connection diagram Rev A 1 4 ...
Page 158: ...149b 10 2a Electrical connection diagram Rev A 2 4 ...
Page 159: ...149c 10 2a Electrical connection diagram Rev A 3 4 ...
Page 160: ...149d 10 2a Electrical connection diagram Rev A 4 4 ...
Page 161: ...150 10 3 Connection of inverter Inverter set Inverter set ...
Page 165: ...153 HCD8116 TP SW Circuit Board Ass y HCD8124 TC8 7 Circuit Board Ass y Rev A ...
Page 166: ...154 HCD8119 y ...