Brother International S-7200B Instruction Manual - English - Page 71
This is displayed if the sewing machine motor locks during thread trimming.
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Error code Err 12 (Solenoid power supply error) Possible cause Is solenoid fuse F2 (5A) blown? Replace the fuse. Err 13 (Treadle unit error) Err 14 (Head detector unit error) Problem with control P.C. board. Replace the control box. Is the treadle unit connector inside the control box disconnected? Insert the connector securely. Is there an open circuit in the treadle connector harness? Replace the treadle unit. Problem with head detector unit Check that the head detector unit connector inside the control box is securely inserted. Replace the head detector unit. 14. TROUBLESHOOTING Page * ** 3702M * ** 3158M * ** 3703M Err 15 Problem with motor. Replace the motor. ** (Problem with sewing machine motor operation) Problem with power P.C. board. Replace the control box. ** Err 16 This is displayed if the sewing machine motor locks during thread trimming. Remove any thread scraps that may be blocking the motor. * (Thread trimming Check that there are no problems with the thread trimming mechanism. ** solenoid timeout) Err 18 (EEROM error) This is displayed if data could not be correctly read from or written to the memory element on the control P. C. board. Replace the control box. ** Err 19 (Control box overheating) This is displayed when the control box becomes abnormally hot. (Three-phase high-voltage specifications only) Check that there are no problems with the cooling fan. ** If there is a problem, replace the cooling fan. ** Err 20 The settings in "Setting method for standard depression stroke" may be incorrect. Redo the settings in "Setting method for standard depression stroke". * (Treadle pedal position error) Problem with treadle unit. Replace the treadle unit. ** S-7200B 64