Brother BE-1201B-AC-PC - Manual (Page 235)

BE-0901E-AC-PC• BE-1201B-AC-PC 12-3
Chapter 12 Troubleshooting
Problem Check point
! Machine operation abnormal • Is any set screw of the rotary encoder loosened?
• Is any set screw of the machine pulley loosened?
• Is any set screw of the machine motor pulley loosened?
• Is embroidery data normal?
• Is the XY carriage belt damaged?
• Are any set screws for the XY pulley loosened?
• Are any set screws for the coupling of the XY pulse motor
loosened?
! Upper shaft locks at a certain
point in one cycle • Is the thread take-up stopped due to interference with the upper
case cover?
[Adjustment]]
W1635
Loosen the hexagon socket head cap screw of the thread takeup
operating lever and adjust the take-up movable range.
Tighten it securely afterwards.
• Are the needle bar clamp and the top dead center stopper
positioned correctly?
! Upper shaft pulley does not turn. • Is the presser foot lifted at a retract position when the power is
turned on?
Lower the presser foot using the lever.
Chec
k thes
e
po
int
s onc
e
ag
ain
! Stitches cannot be made.. • Is the needle attached properly?
• Is the timing of the needle and rotary hook correct?
Needle case
Upper case cover Bolt
Thread take-up
operating lever
Thread take-up