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APPENDIX 183

Care and Maintenance ....................................................................................................184

Restrictions on oiling.....................................................................................................................................184

Precautions on storing the machine...............................................................................................................184

Cleaning the machine surface .......................................................................................................................184

Cleaning the race..........................................................................................................................................184

Troubleshooting ..............................................................................................................186

Frequent troubleshooting topics ....................................................................................................................186

Upper thread tightened up ............................................................................................................................186

Tangled thread on wrong side of fabric .........................................................................................................187

Incorrect thread tension ................................................................................................................................ 189

Fabric is caught in the machine and cannot be removed...............................................................................190

When the thread became tangled under the bobbin winder seat ...................................................................193

List of symptoms ...........................................................................................................................................195

Error messages ..............................................................................................................................................201

Adjusting the LCD.........................................................................................................................................204

Operation beep.............................................................................................................................................204

Canceling the operation beep .......................................................................................................................205

Upgrading Your Machine’s Software Using USB Media ..................................................206

Index ...............................................................................................................................207