HappyJapan HCH Plus, Instruction Book

Page: 252 / 355

-HP -102
PROBLEM CAUSE CORRECTION PAGE
Upper thread
breaks
Machine not properly threaded.
Needle inserted incorrectly.
Thread tension too tight.
Poor thread quality.
Dry hook
Empty stitches or continuous tiny
stitches in design data.
Thread is tangled in an upper
thread cone.
Re-thread machine.
Re-insert needle. (remember,
needles have a front and back!)
Readjust thread tension.
Replace with good quality thread.
Oil the hook.
Turn on stitch sweep function, then
read design data in again.
Un-tangle thread.
4-6
4-1
8-1
23-1
10-3
Lower
(bobbin)
thread breaks
Bobbin threaded incorrectly.
Bobbin wound unevenly or too full.
Thread tension too tight.
Dirt on the hook.
Dry hook
Re-thread the bobbin.
Re-wind the bobbin.
Readjust thread tension.
Clean the hook.
Oil the hook.
4-5
4-4
4-5
23-2
23-1
Thread break
lamp lights up
despite thread
not being
broken (False
thread breaks)
Upper thread is not passing
around the detecting roller.
Thread upper thread correctly. 4-7
Machine skips
stitches
Needle inserted incorrectly.
Bent or blunt needle.
Incorrect size of needle.
Re-insert needle.
Insert new needle.
Choose correct size needle for
fabric.
4-1
4-1
4-2
Fabric puckers Machine not properly threaded.
Bobbin threaded incorrectly.
Blunt needle.
Thread tension too tight.
Re-thread machine.
Re-thread the bobbin.
Insert new needle.
Readjust thread tension.
4-6
4-5
4-1
8-1
Machine
makes loose
stitches or
loops
Bobbin threaded incorrectly.
Machine not properly threaded.
Tension not adjusted properly.
Re-thread the bobbin.
Re-thread machine.
Readjust thread tension.
4-5
4-6
4-5,8-1
Poor tension
balance
Bobbin threaded incorrectly.
Machine not properly threaded.
Dry hook
Re-thread the bobbin.
Re-thread machine.
Oil rotary hook.
4-5
4-6
23-1
Poor design
registration
Fabric not hooped correctly.
Garment is made of elastic
material.
Hoop not installed into machine
properly.
Set hoopping correctly.
Use correct backing and ensure
that design has proper underlay.
Set hoop correctly.
6-2,7-9
6-2,7-9
6-3
7-A
Needle breaks Bent or blunt needle.
Needle setting incorrect.
Thin needle against material.
Poor hooping.
Insert new needle.
Re-insert needle.
Change to thicker needle.
Re-hoop fabric.
4-1
4-1
4-2
Machine runs
with difficulty
Dirt on the hook race. Clean rotary hook.
Oil rotary hook.
23-2
23-1
Machine will
not run
Cord not plugged into electrical
outlet.
Power switch is not turned on.
Power source fuse has blown.
Insert plug fully into outlet.
Turn on the switch.
Replace power source fuse (6A).
5-1
3-1
will not turn on Locking emergency button. Release lock of emergency button. 3-3
HELPFUL HINTS
26_1 Q501
26-1