Table of Contents
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Contents
Chapter 1 - General Information ....................................................................................... 6
1.1. Safety Regulations .............................................................................................................. 6
1.2 Warning: Dangerous voltage levels! ..................................................................................... 6
1.3 ESD-related note: Electrostatic Discharge (ESD) ................................................................. 8
1.4 Tools and gauges ................................................................................................................. 9
1.5 Handling adjustments ......................................................................................................... 12
1.6 Abbreviations/Names Used ................................................................................................ 12
1.7 Cleaning ............................................................................................................................. 13
1.8 Technical specifications of 5 Series .................................................................................... 14
Chapter 2 - Electronics and Wiring ............................................................................... 16
2.2 PCBA-Power ...................................................................................................................... 17
2.3 PCBA-CPU-Module (ARM9) General Information ............................................................... 18
2.3.1 PCBA-CPU-Module/ARM9 ................................................................................................................ 18
2.4 PCBA-Base General Information ........................................................................................ 19
2.4.1 PCBA-Base with feed-dog drop detection ......................................................................................... 19
2.5 PCBA-Position Hall ............................................................................................................ 20
2.6 PCBA-Threader .................................................................................................................. 20
2.7 PCBA-Cover including display and touch screen ................................................................ 21
2.7.1 PCBA-Front cover (B 590, B 570 QE, B 540, B 535 & B 500 Embroidery Only) .............................. 21
2.8 PCBA-Lower-Thread Observer (LTO) ................................................................................ 22
2.9 ABC sensor support (presser-foot recognition) ................................................................... 22
2.11 Handling of Electronic Components .................................................................................. 23
2.12.1 Returning Defective Electronic Components. ................................................................................. 23
2.11.2 Repairs of Electronic Components (PCBA's) .................................................................................. 23
Chapter 3 - Troubleshooting ........................................................................................... 24
3.1 General troubleshooting flow chart ..................................................................................... 24
3.2 Operating Voltage Functional Test ..................................................................................... 25
3.2.1 Use and functions of LEDs .............................................................................................. 25
3.3 Upper-thread sensor ............................................................................................................................. 27
3.4 Lower-thread sensor .......................................................................................................... 28
3.5 Touch screen calibration ...................................................................................................................... 29
3.6 EEPROM missing or misprogrammed ................................................................................................. 29
3.8 Update failed ...................................................................................................................... 30
3.9 Sewing-off guidelines ......................................................................................................... 32
3.10 Personal notes regarding troubleshooting ........................................................................ 36
Chapter 4 - Removal and Refitting of Components ..................................................... 37
4.1 Covers See ESD-related note ................................................................................. 37
4.1.1 Service Cover .................................................................................................................................... 37
4.1.2 Front cover ........................................................................................................................................ 38
4.1.3 Rear Cover ........................................................................................................................................ 41
4.1.4 Freearm cover ................................................................................................................................... 42
4.1.5 Base-plate cover ................................................................................................................................ 43
4.2 Electronics, Sensors, Switches, Magnets ........................................................................... 44
4.2.1 PCBA-Power including PCB housing ................................................................................................ 44
4.2.2 PCBA-CPU-Module (ARM9) General Information ............................................................................ 46
4.2.3 PCBA-CPU-Module (ARM9).............................................................................................................. 47
4.2.4 PCBA-Base with feed-dog drop detection ........................................................................................ 48
4.2.4.1 EEPROM (Electrically Erasable Programmable Read-Only Memory) ........................................... 48
4.2.5 PCBA-Position Hall ............................................................................................................................ 49
4.2.6 PCBA-Threader ................................................................................................................................. 50
4.2.7 PCBA-Front cover including display and touchscreen ...................................................................... 51
4.2.8 PCBA-RET (B 590, B 570 QE, B 540, B 520 & B 500 Embroidery Only) ......................................... 52
4.2.9 PCBA-Lower thread sensor cpl. ........................................................................................................ 53
DRAFT - VERSION
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Table of Contents
Troubleshooting
