5 - 4
Failure Investigation
for Electronic Parts
Error message is displayed
Replace the operation PCB assy.
or
Replace the main PCB assy.
Is one of the stitch selection key,
stitch length adjustment key and
stitch width adjustment key stuck in
a pressed down condition?
N
Y
Release the key that is stuck.
"F3" is displayed.
Replace the foot controller
jack assy.
Is the lead wire of the foot controller
jack assy. free from damage?
Y
N
Connect it correctly.
Is the foot controller jack assy.
connected to the main PCB assy.
(CN4) correctly?
N
Y
Replace the main PCB assy.
"F4" is displayed.
To Next Page
Loading...
Need help?
General
