Brother International Innov-is 6750D Operation Manual - Page 339

9 Chapter Appendix CARE AND MAINTENANCE 338 Restrictions on oiling 338 Precautions on storing the machine 338 Cleaning the LCD Screen 338 Cleaning the Machine Casing 338 Cleaning the Race 338 Cleaning the Cutter in the Bobbin Case Area 340 About the Maintenance Message 341 ADJUSTING THE SCREEN 342 Adjusting the Brightness of the Screen Display 342 Touch Panel is Malfunctioning 342 TROUBLESHOOTING 343 Frequent troubleshooting topics 343 Upper thread is too tight 343 ■ Symptom 343 ■ Cause 343 ■ Remedy 343 Tangled thread on wrong side of fabric 344 ■ Symptom 344 ■ Cause 344 ■ Remedy 344 Incorrect thread tension 346 ■ Symptoms 346 ■ Cause/remedy 346 Fabric is caught in the machine and cannot be removed 347 ■ Removing the fabric from the machine 347 ■ Checking machine operations 349 List of Symptoms 350 ERROR MESSAGES 354 ■ Alarm Sounds 361 SPECIFICATIONS 362 UPGRADING YOUR MACHINE'S SOFTWARE 363 Upgrade Procedure Using USB Media 363 Upgrade Procedure Using Computer 364 STITCH SETTING CHART 365 INDEX 374