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Main Features    Products&Specifica    Maintenance    Trouble Shooting Honour More Product quality… National Torch Progr… Current position：Home > Trouble shooting 1.Unable to start Probable causes Actions Belt is loose or broken Tighten or replace belt Fuse for power or circuit blown out Check ampere capacity and replace fuse Needle position signal or one-rotation signal is not detected Adjust needle position with wrench so that needle position LED come on Frame limit switch is actuated Move frame to appropriate position Abnormality warning lamp in drive unit is on Clean air filter Incomplete contact of connectors in control box Securely couple connectors Incomplete contact of connectors in main shaft drive motor control box Securely couple connectors 2.Color change incorrect Probable causes Actions Incorrect stop position Manually set main shaft to fixed position Needle position and one-rotation signals are not detected Adjust needle position with wrench so that stop position indicating lamp comes on Incorrect needle bar position Set position correctly Incorrect take-up lever position Adjust take-up lever so that it coincides with others in position at fixed position Relay or fuse for color change defective Replace relay or fuse 3.Upper thread defective incomplete Probable causes Actions Thread take-up spring incomplete contact Securely couple connectors Tension base connector incomplete contact Securely couple connectors Upper thread breakage timing contact incomplete Clean and adjust the upper thread breakage timing contact 4.Deformed design Probable causes Actions Frame drive belt is too tight Loosen Frame guide rails are clogged with foreign materials Clean the rails Frame drive circuit defective Replace Memory plate defective Replace Overall weight of the frame is excessive Decrease R, P. M