11. ERROR CODES
RH-9820
118
Upper shaft motor-related errors
Items with a “*” in the “Page” column should only be checked by a qualified technician.
Code Cause
Remedy
Page
E110
Needle up stop position error
Turn the upper shaft pulley until the point where the error
display disappears.
38
E111
Needle up stop position error
Turn off the power, and check the connection of
synchronizer connector P5 at the power supply motor P.C.
board and zigzag sensor connector P10 at the main P.C.
board.
19*
20*
E120
Needle drop signal could not be detected.
Turn off the power, and check the connection of the
synchronizer connector P5 at the main P.C. board.
20*
E130
Sewing machine motor stopped due to a
problem, or synchronizer is faulty.
Turn off the power, and then turn the upper shaft pulley
and check if the sewing machine has locked up.
Check that the upper shaft motor connector P4 and
synchronizer connector P5 are connected at the power
supply motor P.C. board.
20*
E131
Synchronizer is faulty.
Turn off the power, and check the connection of the
synchronizer connector P5 at the power supply motor P.C.
board.
20*
E132
Problem detected with sewing machine
motor operation.
Turn off the power, and then turn the upper shaft pulley
and check if the sewing machine has locked up.
Check that the upper shaft motor connector P4 and
synchronizer connector P5 are connected at the power
supply motor P.C. board.
20*
E133
Sewing machine motor stopping position
is incorrect.
Turn off the power, and then turn the upper shaft pulley
and check if the sewing machine has locked up.
Check that the upper shaft motor connector P4 and
synchronizer connector P5 are connected at the power
supply motor P.C. board.
20*
E140
Sewing machine motor operated in
reverse during sewing.
Turn off the power, and then turn the upper shaft pulley
and check if the sewing machine has locked up.
Check that the upper shaft motor connector P4 and
synchronizer connector P5 are connected at the power
supply motor P.C. board.
20*
E150
Sewing machine motor is overheating, or
temperature sensor is faulty.
Turn off the power, and then turn the upper shaft pulley
and check if the sewing machine has locked up.
Check that the upper shaft motor connector P4 and
synchronizer connector P5 are connected at the power
supply motor P.C. board.
20*
