System Error; Foot Control - Singer 8768 Instruction Manual

HELPFUL MESSAGES
on control panel

SYSTEM ERROR

If the error number should not disappear, consult an authorized technician.
56
in the correct position.
46 for details.
2. Foot control is connected or disconnected.
1. The top thread has broken.
Lift presser foot lifter. Pull to remove top thread from machine and rethread.
Problem
Correction