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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
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