Brother 888-L01 Operation Manual page 10

CONTENTS
Cleaning the race ................................................................... 2
About the maintenance message ............................................ 4
Touch panel is malfunctioning ............................................... 4
Operation beep ...................................................................... 4
Troubleshooting.................................................... 5
Frequent troubleshooting topics ............................................. 5
Upper thread tightened up ..................................................... 5
Tangled thread on wrong side of fabric .................................. 6
Incorrect thread tension.......................................................... 7
Fabric is caught in the machine and cannot be removed ........ 8
If the thread becomes tangled under the bobbin winder seat..... 11
List of symptoms................................................................... 13
Error messages...................................................................... 20
Upgrading your machine's software using USB
flash drive........................................................... 22
Index .................................................................. 23
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