Bernina 990 Service Manual
  1. Manuals
  2. Brands
  3. Bernina Manuals
  4. Sewing Machine
  5. 990
  6. Service manual
Bernina 990 Service Manual

Bernina 990 Service Manual

Hide thumbs Also See for 990:
Table of Contents

Advertisement

Quick Links

Download this manual
SERVICE MANUAL
BERNINA 990

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 990 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Bernina 990

Summary of Contents for Bernina 990

  • Page 1 SERVICE MANUAL BERNINA 990...

  • Page 2: Table Of Contents

    4.3 Stepper Motors..........88 10 Appendix ............237 4.4 Mechanical Components ........96 10.1 Lubrication Diagram........238 10.2 Technical Summary B 990 ....... 247 5 Settings.............. 125 5.1 Basics - General Testing and Adjustment Infor- mation..............126 5.2 Belt..............127 5.3 Head Section ............

  • Page 3: Safety

    1 Safety 2024-06 EN SAFETY INSTRUCTIONS​ SAFETY INSTRUCTIONS Please be aware of the following basic safety instructions when using your machine. Before using this machine, read instruction manual carefully.
  • Page 4 (e.g. magnifying glass). If the LED lamp is damaged or defective, have the LED lamp checked or repaired at your local BERNINA dealer. Switch off the machine before working in ► the needle area. Before starting the machine, close all ►...
  • Page 5 If the machine is damaged or does not ► doctor immediately. work properly, have the machine checked or repaired by your local BERNINA dealer. Appropriate Use Keep all ventilation openings of the The machine may be used, cleaned and ►...
  • Page 6 If the machine is to be used in a country other than the country of origin, obtain a power cable suitable for this country from a BERNINA dealer. Only use this machine with the supplied ► foot control of type LV-1.

  • Page 7: Safety Signs On The Machine

    1 Safety 2024-06 EN Safety Signs on the Machine​ Safety Signs on the Machine Sign Purpose Attention: Close the doors, lids and covers before operating the machine. Caution; moving parts. To reduce the risk of injury, switch off the machine before maintenance work. Attach the covers.

  • Page 8: General Information

    The latest version of the instruction manual can be downloaded at www.bernina.com Proper Use Your BERNINA machine is conceived and designed for manual. Any other use is not considered proper. private household use. It is intended for sewing fabrics BERNINA assumes no liability for consequences and other materials as described in this instruction resulting from improper use.

  • Page 9: Explanation Of Symbols

        CAUTION Designates a low-risk hazard which can lead to minor or moderate injuries if not avoided.   NOTICE Designates a hazard which can lead to material damage if not avoided. Tips from the BERNINA sewing experts.

  • Page 10: Security In Service

    The latest service instructions can be downloaded from machine or purchased afterwards. the BERNINA iPortal - Homepage. If you do not have access to iPortal yet, your local BERNINA importer will be happy to help you.
  • Page 11 1 Safety 2024-06 EN 1.1 Security in Service Top Dead Center Stitch Length Printed Circuit Board Service Program Assembled Start-/Stop-Unit Return (PCBA) Thin Film Transistor Red, Green and Blue TT / TF Thread Tension Screen LTO / UFU Lower Thread Observer RPM / SPM Revolutions / Stitches per Minute Bottom Dead Center...
  • Page 12 To adjust the clutch carriage timing 0013565.0.00 0327985.0.00 Pinning Tool, Short Sync Plate To pin the positions Basic Position of the BERNINA Walking Foot 0027335.0.00 Pinning Tool, Long 7330197.0.00 To pin the positions Adjusting Key To adjust the belt tension, to adjust the distance between the clamping piece and the needle bar 0315635.0.00...
  • Page 13 1 Safety 2024-06 EN 1.1 Security in Service 0315645.0.01 0013617.0.00 Tweezers Eccentric Key To plug and unplug cables Various settings 0319355.0.00 Plug Mounting Tool Handelsüblich Mounting aid for plugs and cables Watchmaker's Magnifying Glass (2.5 - 4-fold) To magnify the hook/needle area 39811203 0329485.0.00 Spring Mounting Tool...
  • Page 14 2 Electronics and Wiring 2024-06 EN 1.1 Security in Service Handle Electronic Components ....15 Receiving and Sending Electronic 2.1.1 Components ..........15 Repairing/Replacing Electronic 2.1.2 Components ..........15 Printed circuit boards assembled (PCBA) ..16 2.2.1 PCBA Base..........16 2.2.2 PCBA CPU Module (ARM9)......17 2.2.3 PCBA Cover Left ........

  • Page 15: Electronics And Wiring

    EEPROM, PCBA CPU module etc. 2.1.2 Repairing/Replacing Electronic Components BERNINA International AG offers a repaired and tested Identification of an Electronic Component replacement for some electronic components. The item number indicates the status of the electronic component in the following example.

  • Page 16: Printed Circuit Boards Assembled (Pcba)

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2 Printed circuit boards assembled (PCBA) 2.2.1 PCBA Base X900 White Stepper Motor Electronic Balance Adjustment X1603 Black PCBA Multi-Media X1800 Silver USB C Port X2100 Black Slot PCBA CPU Module X1801 Silver USB A Port X101...

  • Page 17: Pcba Cpu Module (Arm9)

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) The PCBA base contains Internal Connectors EEPROM (storing of machine-specific data, e. g. According to table stitch counter and operating hours counter) Voltage Control LEDs, 5 and 36 Volt External Connections Slot for PCBA CPU Module Ports for USB A and USB C Connection for Foot Control...

  • Page 18: Pcba Cover Right

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) The PCBA cover left includes: Pattern Start (S1) Sliding potentiometer to regulate the sewing speed Pattern End (S2) Button function foil for signal registration Needle Up/Down (S3) Connectors according to the picture Securing Stitch (S4) Tasks Manual Control of Sewing Speed...

  • Page 19: Pcb Power Supply Unit

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.5 PCB Power Supply Unit Rectifier Transformer Connector to Connect to the PCBA Base Connector for Cable Switch/Plug DIP Switch On/Off Power Connection Tasks Converting the Input Voltage to 5 and 36 Volts DC Voltage Monitoring, no Decrease in Voltage Output DIP Switch On/Off Power Connection...

  • Page 20: Pcba Dual Feed

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.7 PCBA Dual Feed The PCBA dual feed is provided with a light barrier (reflection) and is responsible for detecting the position (on/off) of the Dual Feed. (a) Connector to PCBA Base (X-38)   (b) Light Barrier (reflection) for the Dual Feed   2.2.8 PCBA Position The PCBA position contains Hall Sensor...

  • Page 21: Pcba Head Buttons

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.9 PCBA Head Buttons S5 - Automatic Needle Threader Button S4 - Start/Stop Button S3 - Presser Foot Up/Down Button S2 - Thread Cutter Button S1 - Quick Reverse Button (RET) Keyboard Layout Foil Connection to the PCBA Base Light Barrier Upper Thread Observer (UTO)

  • Page 22: Pcba Presser Foot Height Sensor

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.11 PCBA Presser Foot Height Sensor The PCBA presser foot height sensor is responsible for Connector to PCBA Light Barrier the position of the presser foot height (Hall sensor) and Base the needle bar (light barrier).

  • Page 23: Pcba Free Hand System (Fhs)

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.13 PCBA Free Hand System (FHS) The PCBA Free Hand System (FHS) contains Light Barrier Knee Lifter/Free Hand System (FHS) Connector to the PCBA Base Task Detection of Knee Lifter Operation Light Barrier Knee Connector to the Lifter/Free Hand...

  • Page 24: Pcba Stitch Plate Detection

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.15 PCBA Stitch Plate Detection U4 - Hall Sensor U2 - Hall Sensor U3 - Hall Sensor U1 - Hall Sensor Connector to the PCBA Base The PCBA stitch plate detection contains Task U1-U4 Hall Sensors Recognizing the Attached Stitch Plate...

  • Page 25: Pcba Multi-Media

    2 Electronics and Wiring 2024-06 EN 2.2 Printed circuit boards assembled (PCBA) 2.2.16 PCBA Multi-Media Recovery Button LED Status Life LED WiFi Module Loudspeaker Connection Microphone Connection Connecting Cable PCBA Base Connection Fan Connection PCBA Camera Connection LCD Unit Connection Backlight Connection Touch Screen Connection Cooling Unit PCBA-CPU-Multimedia Connection EMC Textile Seal...

  • Page 26: Cable Harness Of The Motors

    2 Electronics and Wiring 2024-06 EN 2.3 Cable Harness of the Motors 2.3 Cable Harness of the Motors Position Component Plug Wire Colour Target Connection Plug to PCBA Base, 28 Wires Black X1602 PCBA Base Stepper Motor Dual Feed White X1602 PCBA Base Blue/Blue/Blue/Blue Stepper Motor Thread Tension White...
  • Page 27 2 Electronics and Wiring 2024-06 EN 2.3 Cable Harness of the Motors The cable harness includes One Cable Harness with 28 Wires Several Spiral Hoses Task The cable harness connects the components listed above to the PCBA base. Information The cable harness is only available as a complete unit.

  • Page 28: Cable Harness Of The Sensors

    2 Electronics and Wiring 2024-06 EN 2.4 Cable Harness of the Sensors 2.4 Cable Harness of the Sensors Positi Component Connecto Wire Colour Target r Colour Connection Plug to PCBA Base, 31 Black X1302, Wires PCBA Base PCBA Presser Foot Height Sensor White X1302, PCBA Base...
  • Page 29 2 Electronics and Wiring 2024-06 EN 2.4 Cable Harness of the Sensors The cable harness includes One Cable Harness with 32 Wires Several Spiral Hoses Task The cable harness connects the components listed above to the PCBA base. Information The cable harness is only available as a complete unit.

  • Page 30: Block Diagram

    2 Electronics and Wiring 2024-06 EN 2.5 Block Diagram 2.5 Block Diagram...

  • Page 31: Troubleshooting

    3 Troubleshooting 2024-06 EN 2.5 Block Diagram Firmware Update ........32 3.6.8 Sewing stop - "Fabric too thick" ....47 3.1.1 Update has failed ........32 Speed Control Unit (SSU) is not working 3.6.9 correctly ............ 47 3.1.2 The boot loader is out of date ....32 When Connecting Devices ......

  • Page 32: Firmware Update

    3 Troubleshooting 2024-06 EN 3.1 Firmware Update 3.1 Firmware Update 3.1.1 Update has failed The update of the new application cannot be performed. Possible Cause Troubleshooting The boot loader is too old. 1. Switch off the machine and restart the update Machine is not recognised by the EEPROM. process after 30 seconds.

  • Page 33: Machine Repeatedly Requests The Firmware

    3 Troubleshooting 2024-06 EN 3.1 Firmware Update 3.1.4 Machine repeatedly requests the firmware After replacing the PCBA base, the machine requests a firmware update. After the firmware update and restart of the machine, a firmware update is requested again. Possible Cause Troubleshooting An incorrect firmware was attempted to be saved 1.

  • Page 34: Incorrect Firmware On The Pcba Cpu Module

    3 Troubleshooting 2024-06 EN 3.1 Firmware Update 3.1.5 Incorrect firmware on the PCBA CPU module The firmware cannot be recognised by the machine. Possible Cause Troubleshooting The built-in PCBA CPU module has firmware from a 1. Insert the USB stick with the firmware intended for previous installation that is not compatible with this the machine.

  • Page 35: Error Messages

    3 Troubleshooting 2024-06 EN 3.2 Error Messages 3.2 Error Messages 3.2.1 The EEPROM is not recognised by the machine The EEPROM cannot be recognised by the machine. Possible Cause Troubleshooting The built-in EEPROM has a non-compatible machine 1. Replace the EEPROM with a completely new one. identification from an earlier installation.
  • Page 36 3 Troubleshooting 2024-06 EN 3.2 Error Messages 3.2.4 #1002 Needle Up/Down button does not respond or cannot be pressed. Possible Cause Troubleshooting The needle up/down button is blocked. 1. Check the mobility of the button. The press button on the left-hand side of the PCBA 2.
  • Page 37 3 Troubleshooting 2024-06 EN 3.2 Error Messages 3.2.7 #1005 The machine performs a reference run after starting and displays this error message. Possible Cause Troubleshooting PCBA P print is defective. 1. Check the plugs and the connecting cables. The main motor does not work. 2.

  • Page 38: Maintenance Messages

    3 Troubleshooting 2024-06 EN 3.3 Maintenance Messages 3.3 Maintenance Messages 3.3.1 Message on cleaning/oiling the machine Cleaning/Lubricating can be carried out by the customers themselves. Possible Cause Complying with the Request The stitch counter has reached the specified number of stitches that requires maintenance. [} see page 229] 1.

  • Page 39: When Starting Up The Machine

    3 Troubleshooting 2024-06 EN 3.4 When Starting Up the Machine 3.4 When Starting Up the Machine 3.4.1 Machine does not start up The machine does not respond by switching it on. Possible Cause Troubleshooting The plug or the connecting cable of the PCBA Continue checking with 36V LED on the PCBA base. power supply unit/PCBA base is not plugged in correctly or is defective.
  • Page 40 3 Troubleshooting 2024-06 EN 3.4 When Starting Up the Machine Checking the 5V LED on the PCBA Base Troubleshooting the 5V LED Prerequisite: Prerequisite: The front cover is removed. The machine is switched off. The 36V LED on the PCBA base lights up. Unplug all cables from the PCBA base (except the ►...

  • Page 41: The Machine Is Mechanically Blocked

    3 Troubleshooting 2024-06 EN 3.4 When Starting Up the Machine 3.4.2 The Machine is Mechanically Blocked The machine blocks while sewing or when cutting the thread. Possible Cause Troubleshooting Main motor blocked Eliminate the fault from the main motor. [} see ► page 45] Possible Cause Troubleshooting Clutch Carriage blocked The stop bolt impedes the movement of the clutch...

  • Page 42: Display Does Not Work Correctly

    3 Troubleshooting 2024-06 EN 3.5 Display does not work correctly 3.5 Display does not work correctly 3.5.1 Black screen is permanently displayed The screen remains black when the machine is started. Prerequisite The machine starts up. The LED status on the PCBA CPU module indicates that the application has started.

  • Page 43: When Sewing

    3 Troubleshooting 2024-06 EN 3.6 When Sewing 3.6 When Sewing 3.6.1 Upper thread observer reacts improperly The upper thread observer indicates a thread breakage for no reason. Possible Cause Troubleshooting The regulator spring is not connected to the 1. Hook in the spring of the switching lug. switching lug.

  • Page 44: Noise Is Audible

    3 Troubleshooting 2024-06 EN 3.6 When Sewing 3.6.3 Noise is audible Causes of noise sources Approach for troubleshooting The bobbin winder motor is switched on. The noise can be reproduced. ► Head Section (e. g. thread lever) The source can be localised. ► Area of the Upper Shaft The noise can be categorised into two types.

  • Page 45: Main Motor Does Not Work

    3 Troubleshooting 2024-06 EN 3.6 When Sewing 3.6.4 Main motor does not work Possible Cause 4. The main motor is not plugged in correctly or is defective. 1. The error message "Mechanically blocked" appears 5. The PCBA base is not plugged in correctly or is on the screen.

  • Page 46: Thread Cutter Does Not Cut All Threads

    3 Troubleshooting 2024-06 EN 3.6 When Sewing Checking and Replacing Printed Circuit Boards Troubleshooting Prerequisite: Replace the PCBA base for test purposes and check ► the main motor. The foot control works. Replace the PCBA CPU module for test purposes The main motor has been tested. ►...

  • Page 47: Troubleshooting

    3 Troubleshooting 2024-06 EN 3.6 When Sewing 3.6.7 Threader does not work or only works occasionally The threader does not thread at times. Possible Cause Troubleshooting The threader head is dirty. 1. Select "Machine/Maintenance/Cleaning" in the The threader head height is not set properly. setup program.

  • Page 48: When Connecting Devices

    The base plate is bent. 3. Check the plug connections between the PCBA EMB and the connector of the embroidery module. 4. Check the base plate for deformation. Refer to iPortal info no. 071737 at https:// iportal.bernina.com/...

  • Page 49: Removal And Refitting Of Components

    4 Removal and Refitting of Components 2024-06 EN 3.7 When Connecting Devices Covers............51 Removing and Refitting the PCBA CPU 4.2.10 Module............74 4.1.1 Removing and Refitting the Head Cover ..51 4.2.11 Removing and Refitting the PCBA Base ..75 4.1.2 Removing and Refitting the Upper Cover ...
  • Page 50 4 Removal and Refitting of Components 2024-06 EN 3.7 When Connecting Devices Mechanical Components ......96 4.4.1 Removing and Refitting the Hook Driver ..96 Removing and Refitting the Hook 4.4.2 Guideway..........98 Removing and Refitting the Thread Cutter 4.4.3 Unit on the Stitch Plate Carrier ....99 Replacing the Blade with the Thread 4.4.4 Cutter Unit installed ........

  • Page 51: Covers

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1 Covers 4.1.1 Removing and Refitting the Head Cover Required parts and tools: Screwdriver T20, Torx Service Cover Screw T20, Torx Head Cover Removing the Head Cover Refitting the Head Cover Video Video    ...

  • Page 52: Removing And Refitting The Upper Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.2 Removing and Refitting the Upper Cover Required parts and tools: Screwdriver T20, Torx Service Cover Screw T20, Torx Upper Cover Removing the Upper Cover Refitting the Upper Cover Video Video     1.

  • Page 53: Removing And Refitting The Rear Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.3 Removing and Refitting the Rear Cover Required parts and tools: Screwdriver T20, Torx Screw T20, Torx Screw T20, Torx Guiding nose Guiding nose Removing the Rear Cover Refitting the Rear Cover Video Video  ...

  • Page 54: Removing And Refitting The Thread Spool Holder Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.4 Removing and Refitting the Thread Spool Holder Cover Required parts and tools: Screwdriver T20, Torx Screw T20, Torx Removing the Thread Spool Holder Cover Refitting the Thread Spool Holder Cover Video Video  ...

  • Page 55: Multi-Media Module

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.5 Removing and Refitting the Display incl. Multi-media Module Required parts and tools: Screwdriver T20, Torx Spanner 7 Screw T20, Torx Hexagon Nut and Washer Plug Display Seating Removing the Display incl. Multi-media Module Refitting the Display incl.

  • Page 56: Removing And Refitting The Ret Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.6 Removing and Refitting the RET Cover Required parts and tools: Screwdriver T9, Torx Screw T9, Torx Plug Removing the RET Cover Refitting the RET Cover Video Video     1. Remove the 3 screws (a). 1.

  • Page 57: Removing And Refitting The

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.7 Removing and Refitting the Front Cover Required parts and tools: Screwdriver T8, Torx Screw T8, Torx Guiding nose Guiding nose Removing the Front Cover Refitting the Front Cover Video Video     1.

  • Page 58: Removing And Refitting The Base Panel

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.8 Removing and Refitting the Base Panel Required parts and tools: Screwdriver T15, Torx Screwdriver T8, Torx Screw T15, Torx Screw T8, Torx Manual Thread Cutter Lower Thread Sensor Removing the Base Panel Refitting the Base Panel Video Video...

  • Page 59: Removing And Refitting The Freearm Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.9 Removing and Refitting the Freearm Cover Required parts and tools: Screwdriver T20, Torx Screwdriver T10, Torx Screw T20, Torx Screw T8, Torx Screw T8, Torx Plug Support Slide-on Table Removing the Freearm Cover Refitting the Freearm Cover Video Video...

  • Page 60: Removing And Refitting The Freearm Cover Right

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.10 Removing and Refitting the Freearm Cover Right Required parts and tools: Screwdriver T20, Torx Screw T20, Torx Freearm Cover Right Removing the Freearm Cover Right Refitting the Freearm Cover Right Video Video  ...

  • Page 61: Removing And Refitting The Center Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.11 Removing and Refitting the Center Cover Required parts and tools: Screwdriver T20, Torx Screw T20, Torx Plug Removing the Center Cover Refitting the Center Cover Video Video     1. Loosen the 4 screws (a). 1.

  • Page 62: Removing And Refitting The Handwheel Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.12 Removing and Refitting the Handwheel Cover Required parts and tools: Screwdriver T10, Torx 0343955.2.00 Screw T10, Torx Main Switch and Power Supply Cable Connector Guiding nose Handwheel Seating Removing the Handwheel Cover Refitting the Handwheel Cover Video Video...

  • Page 63: Removing And Refitting The Base Plate Cover

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.13 Removing and Refitting the Base Plate Cover Required parts and tools: Screwdriver T20, Torx Plug Screw T20, Torx Removing the Base Plate Cover Refitting the Base Plate Cover Video Video     1.

  • Page 64: Removing And Refitting The Left Front Panel

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.14 Removing and Refitting the left Front Panel Button Removing the left Front Panel Refitting the Left Front Panel Video Video     1. Remove the button (a). 1. Position the front panel and snap the clamping bars (b) with a little pressure.

  • Page 65: Removing And Refitting The Right Front Panel

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.15 Removing and Refitting the Right Front Panel Rotary Knob Removing the Right Front Panel Refitting the Right Front Panel Video Video     1. Remove the 2 rotary knobs (a). 1. Position the front panel and snap the clamping bars (b) with a little pressure.

  • Page 66: Removing And Refitting The Display Housing

    4 Removal and Refitting of Components 2024-06 EN 4.1 Covers 4.1.16 Removing and Refitting the Display Housing Required parts and tools: Screwdriver T20, Torx Screwdriver T10, Torx Support Plate Support Plate Screw Torx 20 Screw Torx 20 Removing the Display Housing Refitting the Display Housing Video Video  ...

  • Page 67: Electronics And Sensors

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2 Electronics and Sensors 4.2.1 Removing and Refitting the PCBA Cover Right/Left Removing and Refitting the PCBA Cover Left Required parts and tools: Screwdriver T8, Torx Screw T8, Torx Keypad Removing the PCBA Cover Left Refitting the PCBA Cover Left 1.
  • Page 68 4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors Removing and Refitting the PCBA Cover Right Required parts and tools: Screwdriver T8, Torx Screw T8, Torx Keypad Removing the PCBA Cover Right Refitting the PCBA Cover right 1. Remove the 4 screws (a). 1.

  • Page 69: Removing And Refitting The Bobbin Winder Unit

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.2 Removing and Refitting the Bobbin Winder Unit Screwdriver T20, Torx Cable Ties Screw T20, Torx Removing the Bobbin Winder Unit Refitting the Bobbin Winder Unit 1. Remove the cable tie (a). 1.

  • Page 70: Removing And Refitting The Fan

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.4 Removing and Refitting the Fan Required parts and tools: Screwdriver T8, Torx Screw T8, Torx Plug Removing the Fan Refitting the Fan 1. Disconnect the plug (a). 1. Tighten the 2 screws (b). 2.

  • Page 71: Removing And Refitting The Pcba Cover Right

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.6 Removing and Refitting the PCBA Cover Right Required parts and tools: Screwdriver T8, Torx Screw T8, Torx Keypad Removing the PCBA Cover Right Refitting the PCBA Cover right 1. Remove the 4 screws (a). 1.

  • Page 72: Removing And Refitting The Pcba Fhs (Free Hand System)

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors Removing the PCBA Multi-media Refitting the PCBA Multi-media Video Video     1. Disconnect 2 plugs and the ribbon cable (a). 1. Position the PCBA multi-media. 2. Remove the 6 screws (b). 2.

  • Page 73: Removing And Refitting The Led Sewing Light Including Camera On The Head Frame

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.9 Removing and Refitting the LED Sewing Light including Camera on the Head Frame Required parts and tools: Screwdriver T20, Torx Screwdriver T10, Torx Head Cover Attachment Removing the LED Sewing Light including Camera Refitting the LED Sewing Light including Camera 1.

  • Page 74: Removing And Refitting The Pcba Cpu Module

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.10 Removing and Refitting the PCBA CPU Module Required parts and tools: Screwdriver T20, Torx Screw T20, Torx Print Bracket Locking Clamp Removing the PCBA CPU Module Refitting the PCBA CPU Module 1.

  • Page 75: Removing And Refitting The Pcba Base

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.11 Removing and Refitting the PCBA Base Required parts and tools: Screwdriver T20, Torx Screw Torx 20 and Print Bracket EEPROM Removing the PCBA base Refitting the PCBA Base 1. Disconnect all plugs (a) from the PCBA base. 1.

  • Page 76: Removing And Refitting The Pcba Stitch Plate Detection

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.12 Removing and Refitting the PCBA Stitch Plate Detection Required parts and tools: Screwdriver T6, Torx Plug Screw T6, Torx Removing the PCBA Stitch Plate Detection Refitting the PCBA Stitch Plate Detection 1.

  • Page 77: Removing And Refitting The Loudspeaker

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.14 Removing and Refitting the Loudspeaker Required parts and tools: Screwdriver T6, Torx Screw T6, Torx Removing the Loudspeaker Refitting the Loudspeaker 1. Remove the 4 screws (a). 1. Position the loudspeaker. 2.

  • Page 78: Removing And Refitting The Battery Holder

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.16 Removing and Refitting the Battery holder Housing Part Battery Holder Removing the Battery Holder Refitting the Battery Holder 1. Remove the lid and the battery (a). 1. Insert the battery holder (b) with a little pressure. 2.

  • Page 79: Removing And Refitting The Pcba Led Sewing Light On The Freearm

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.18 Removing and Refitting the PCBA LED Sewing Light on the Freearm Removing the PCBA LED Sewing Light on the Refitting the PCBA LED Sewing Light on the Freearm Freearm Insert the PCBA LED sewing light on the free arm in 1.

  • Page 80: Removing And Refitting The Presser Foot Height Sensor

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors Removing the LED Sewing Light including Camera Refitting the LED Sewing Light including Camera 1. Disconnect the plug (e). 1. Attach the sewing light correctly to the head frame and position it in the cable duct. 2.

  • Page 81: Removing And Refitting The Pcba Threader

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.21 Removing and Refitting the PCBA Threader Required parts and tools: Screwdriver T10, Torx Screw T10, Torx PCBA Threader Plug Basting Device Plug PCBA Threader Removing the PCBA Threader Refitting the PCBA Threader 1.

  • Page 82: Removing And Refitting The Pcba Presser Foot Detection Sensor

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.22 Removing and Refitting the PCBA Presser Foot Detection Sensor Slotted Screwdriver Sensor Support (ABC) of the Presser Foot Recog- Calotte Bearing Area nition Sensor Plug of Sensor Support (ABC) Presser-Foot Recog- nition Sensor Removing the PCBA Presser Foot Detection Sensor Refitting the PCBA Presser Foot Detection Sensor...

  • Page 83: Removing And Refitting The Pcba Dual Feed

    Video     1. Remove the covers. 1. Lower the BERNINA Dual Feed lever (a). 2. Lower the BERNINA Dual Feed lever (a). 2. Connect the plug (c) with the PCBA Dual Feed (b). 3. Open the locking clip (e) with the screwdriver (d) in 3. Position the PCBA Dual Feed (b) and fix it with light the direction of the arrow.

  • Page 84: Removing And Refitting The Pcba Bsr With Accessories Connector

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.24 Removing and Refitting the PCBA BSR with Accessories Connector Required parts and tools: Screwdriver T10, Torx Screw T10, Torx PCBA BSR with Accessories Connector Plug PCBA EMB Connector Removing the PCBA BSR with Accessories Refitting the PCBA BSR with Accessories Connector Connector...

  • Page 85: Removing And Refitting The Pcba Emb With Connector

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.25 Removing and Refitting the PCBA EMB with Connector Screwdriver T20, Torx Screwdriver T8, Torx Centering Plate Printed Circuit Board EMB Connection Removing the PCBA EMB with Connector Refitting the PCBA EMB with Connector 1.

  • Page 86: Removing And Refitting The Lower Thread Observer (Lto)

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.26 Removing and Refitting the Lower Thread Observer (LTO) Lower Thread Sensor Axis Hook Race Cover Bracket Plug Lower Thread Observer Guide of Lower Thread Observer Removing the Lower Thread Observer Refitting the Lower Thread Observer 1.

  • Page 87: Removing And Refitting The Pcba Hall Position

    4 Removal and Refitting of Components 2024-06 EN 4.2 Electronics and Sensors 4.2.27 Removing and Refitting the PCBA Hall Position Required parts and tools: Screwdriver T20, Torx Feeler Gauge 30 Removing the PCBA Hall Position Refitting the PCBA Hall Position 1. Remove the 2 screws (a). 1.

  • Page 88: Stepper Motors

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3 Stepper Motors 4.3.1 Removing and Refitting the Main Motor Screwdriver T25, Torx Fan Wheel Negative Pole Plug (Black) Positive Pole Plug (Red) Positive Pole Contact (Red) with Protrusion Removing the Main Motor Refitting the Main Motor 1.

  • Page 89: Removing And Refitting The Stepper Motor Of The Stitch Length Transmission

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.2 Removing and Refitting the Stepper Motor of the Stitch Length Transmission Screwdriver T6, Torx Screwdriver T10, Torx Feeler Gauge, 0.3 mm Feeler Gauge, 0.3 mm Screw T6, Torx Screw T10, Torx Removing the Stepper Motor of the Stitch Length Refitting the Stepper Motor of the Stitch Length Transmission...

  • Page 90: Removing And Refitting The Stepper Motor Of The Thread Tension Unit

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.3 Removing and Refitting the Stepper Motor of the Thread Tension Unit Screw T15, Torx Kühlblech Screw T15, Torx Removing the Stepper Motor of the Thread Refitting the Stepper Motor of the Thread Tension Tension Unit Unit 1.

  • Page 91: Removing And Refitting The Stepper Motor Of The Presser Foot Pressure

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.4 Removing and Refitting the Stepper Motor of the Presser Foot Pressure Required parts and tools: Screwdriver T20, Torx Plug PCBA Threader Plug Stepper Motor Screw T10, Torx Screw T10, Torx Screw T10, Torx Head Plate Front Stepper motor of the Presser Foot Pressure/Height Pinion...

  • Page 92: Removing And Refitting The Stepper Motor Of The Stitch Width

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.5 Removing and Refitting the Stepper Motor of the Stitch Width Required parts and tools: Screwdriver T10, Torx Screwdriver T8, Torx Allen Wrench T10, Torx Feeler Gauge, 0.3 mm Pinning Tool, Long Setscrew T8, Torx Screw T10, Torx Screw T10, Torx...
  • Page 93 4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors Removing the Stepper Motor of the Stitch Width Refitting the Stepper Motor of the Stitch Width Video Video     1. Remove the covers. 1. Position the stepper motor (g) in the head plate front (f).

  • Page 94: Removing And Refitting The Stepper Motor Of Feed Dog Down

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.6 Removing and Refitting the Stepper Motor of Feed Dog Down Required parts and tools: Screwdriver T20, Torx Bracket Screw T20, Torx Transporteurversenkungslasche Removing the Stepper Motor of the of Feed Dog Down 1.

  • Page 95: Removing And Refitting The Stepper Motor Of The Electronic Balance Adjustment

    4 Removal and Refitting of Components 2024-06 EN 4.3 Stepper Motors 4.3.7 Removing and Refitting the Stepper Motor of the Electronic Balance Adjustment Allen Wrench T10, Torx Screw T10, Torx Removing the Stepper Motor of the Electronic Refitting the Stepper Motor of the Electronic Balance Adjustment Balance Adjustment Position the stepper motor and fix it with the 2...

  • Page 96: Mechanical Components

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4 Mechanical Components 4.4.1 Removing and Refitting the Hook Driver Required parts and tools: Screwdriver T20, Torx Screwdriver T8, Torx Spring Mounting Tool Adjusting Gauge, Hook Guideway CB9 Pinning Tool, 3.0 mm Sewing Machine Oil OY 100 K Distance Gauge, Hook Eccentric Key ~4.5 mm...
  • Page 97 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Removing the Hook Driver 4. Place the distance gauge (i) on the back, insert the hook and close the hook cover. Video ð The shaft end of the hook driver protrudes   ~ 4.5 mm from the hook driver bearing.

  • Page 98: Removing And Refitting The Hook Guideway

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.2 Removing and Refitting the Hook Guideway Required parts and tools: Screwdriver T20, Torx Adjusting Gauge Feed Dog Height Adjusting Gauge, Hook Guideway CB9 Pinning Tool, 3.0 mm Eccentric Key Screw T20, Torx Greiferbahnring Absteckwerkzeug Adjusting Gauge, Hook Guideway CB9...

  • Page 99: Removing And Refitting The Thread Cutter Unit On The Stitch Plate Carrier

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 7. Also test the setting in horizontal and the quarter 14. Tighten the 3 screws (a) position. 15. Remove the adjusting gauge and the pinning tools. 8. Refit the stitch plate carrier (e). 16.
  • Page 100 For unit and the hook guideway. this reason, we recommend regular cleaning of the 3. Fix the thread cutter unit with 3 screws (a). stitch plate support by qualified BERNINA technicians. Required parts and tools: Screwdriver T8, Torx Brush Lint-free thread, e.g.
  • Page 101 1. Fasten the thread catcher (e) to the machine with this reason, we recommend regular cleaning of the the screws (b). stitch plate support by qualified BERNINA technicians. 2. Remove any dirt between the thread catcher plates using a lint-free thread, e.g. SABA 30.

  • Page 102: Replacing The Blade With The Thread Cutter Unit Installed

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.4 Replacing the Blade with the Thread Cutter Unit installed Required parts and tools: Piece of Fabric Slotted Screwdriver Screwdriver T8, Torx Sewing Needle Tweezers Pliers Screw T8, Torx Greifertreiberbereich Removing the Blade 5.

  • Page 103: Replacing The Blade With Removed Thread Cutter Unit

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 2. Push the blade between the first and second plate to its intended position. Insert a sewing needle (c) as a spacer between the ► 3. Slightly tighten the screw (a) push the blade into first and second plate.

  • Page 104: Removing And Refitting The Clutch Carriage

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.6 Removing and Refitting the Clutch Carriage Required parts and tools: Screwdriver T20, Torx Screwdriver T10, Torx 2 x Pinning Tool, 3.0 mm Eccentric Key Spring Mounting Tool Tension Spring Screw T10, Torx Clamp Zugmagnetstecker Circlip 2.3...
  • Page 105 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Refitting the Clutch Carriage 10. Pin the clutch carriage with the pinning tool (l). 11. Insert the eccentric key into the adjustment Video hole (m) and position the clutch carriage by turning   so that the release fork does not touch the base shaft.

  • Page 106: Removing And Refitting The Belt Pulley Of The Hook Driver

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.7 Removing and Refitting the Belt Pulley of the Hook Driver Required parts and tools: Pinning Tool, 3.0 mm Loop Lift Gauge 2.62 mm Screwdriver T20, Torx Allen Wrench T8, Torx Absteckwerkzeug 3,0 mm Screw T20, Torx Belt Tensioner Setscrew T8, Torx...

  • Page 107: Removing And Refitting The Needle Bar

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.8 Removing and Refitting the Needle Bar Required parts and tools: Screwdriver T6, Torx Tension Spring Setscrew T6, Torx Klinke Needle Bar Removing the Needle Bar Refitting the Needle Bar 1. Remove the needle bar support. 1.

  • Page 108: Removing And Refitting The Needle Holder

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.9 Removing and Refitting the Needle Holder Required parts and tools: Feeler Gauge 0.05 mm Screwdriver T6, Torx 0326675.0.02 Needle Stop Screw Führung Pressure Spring Eyelet Needle Holder Needle Mask Thread Guide Plate Needle Bar Feeler Gauge 0.05 mm Removing and Refitting the Needle Holder...

  • Page 109: Removing And Refitting The Threader Mechanism

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.10 Removing and Refitting the Threader Mechanism Screwdriver T6, Torx Spring Mounting Tool Screwdriver T10, Torx Tweezers Tension Spring Tension Spring Setscrew T6, Torx Driving Collar Pivot Pins 2 mm Pivot Pins 4 mm Cylinder Pin Stangenschieber Positioner Bar...
  • Page 110 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Refitting the Threader Mechanism 9. Attach the spring (l) on the positioner bar (i). 10. Attach the lower pivot pins (f) on the positioner Video bar (i).   11. Attach the cylinder pin (g) on the positioner bar (i). 1.

  • Page 111: Removing And Refitting The Dual Feed

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.11 Removing and Refitting the Dual Feed Required parts and tools: Screwdriver T20, Torx Screwdriver T10, Torx Circlip Bracket Ø1.5 Cable Duct Screw T20, Torx PCBA BSR with Accessories Connector PCBA Dual Feed Circlip 1.5 Screw T10, Torx Screw T10, Torx...
  • Page 112 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Refitting the Dual Feed 6. Fit the PCBA dual feed (d). [} see page 83] 7. Position the PCBA BSR with accessory Video connection (c) and the cable duct (a) and tighten   the screws (b). 8. Connect all plugs, feed the cable into the cable 1.

  • Page 113: Removing And Refitting The Thread Take-Up And The Joint Piece

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.12 Removing and Refitting the Thread Take-up and the Joint Piece Required parts and tools: Screwdriver T10, Torx Screwdriver T8, Torx Screwdriver T6, Torx Screwdriver T20, Torx Sewing Machine Oil OY 100 K Screw T10, Torx Pufferfeder mit Halter Pan Head Screw T10, Torx with Collar...
  • Page 114 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Removing the Thread Take-up Refitting the Thread Take-up 1. Insert the coupling (n) into the needle bar. 1. Remove the covers. [} see page 51] 2. Temporarily position the retraction clamp and tighten the setscrew (j). 2.

  • Page 115: Removing And Refitting The Thrust Link

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.13 Removing and Refitting the Thrust Link Required parts and tools: Screwdriver T8, Torx Spring Mounting Tool Circlip Bracket Ø4 - 7 Lift/Thrust Link Stitch Length Cam Tension Spring Tension Spring Connecting Bracket Sliding Stone Setscrew T8, Torx Bolt with Recess...
  • Page 116 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Removing the Thrust Link Refitting the Thrust Link Video Video     1. Remove the covers. 1. Insert the lift-thrust link (o) and position the pressure spring (n). 2. Turn the handwheel until the lift-thrust link (a) is in the highest position.

  • Page 117: Removing And Refitting The Sideways-Motion

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.14 Removing and Refitting the Sideways-Motion Screwdriver T20, Torx Eccentric Key Lubricant UH1 14-1600 Screw T20, Torx Adjustment Link Pressure Spring Lever Stepper Motor Cam Balls Screw T20, Torx Carrier Engagement of the Adjusting Link Removing the Sideways-Motion Refitting the Sideways-Motion Removing the Sideways-Motion...

  • Page 118: Removing And Refitting The Toothed Rack Bearing For The Pressure Foot Pressure

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.15 Removing and Refitting the Toothed Rack Bearing for the Pressure Foot Pressure Required parts and tools: Screwdriver T10, Torx Spring Mounting Tool Circlip Bracket Ø3.2 Lubricant UH1 14-1600 Circlip 3.2 Washer 4.3x7x0.8, Burnished Toothed Wheel Pinion Tension Spring...

  • Page 119: Removing And Refitting The Upper Crank Shaft And The Dual Feed Stepper Motor

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.16 Removing and Refitting the upper Crank Shaft and the Dual Feed Stepper Motor Required parts and tools: Screwdriver T20, Torx Pinning Tool, Long Screw T20, Torx Sliding Stone Plug Screw T20, Torx Sicherungsring Pinning Tool, Long Stop...
  • Page 120 4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Removing the upper Crank Shaft and the Dual Refitting the upper Crank Shaft and the Dual Feed Feed Stepper Motor Stepper Motor 1. Remove the covers. 1. Pin the tooth segments of the crank shaft (f) against each other.

  • Page 121: Removing And Refitting The Threader Head

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.17 Removing and Refitting the Threader Head Required parts and tools: Spring Mounting Tool Bobbin Winder Gauge Screwdriver T10, Torx, Short Circlip Bracket Ø3.2 Torsion Spring Positioner Bar Hook Bar Circlip 3.2 Halteblech Bobbin Winder Gauge Threader Head...

  • Page 122: Removing And Refitting The Thread Presenter

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components Refitting the Threader Head 5. Attach the bracket (e). 6. Attach the lower circlip (d). 1. Position the threader head (g) to the edge of the 7. Position the torsion spring on the back of the bobbin winder gauge (f).

  • Page 123: Removing And Refitting The Thread Clamp

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.19 Removing and Refitting the Thread Clamp Required parts and tools: Screwdriver T10, Torx Plug Screw T10, Torx Removing the Thread Clamp 2. Only slightly tighten the screw (b). 3. Press the thread clamp slightly forwards as far as it 1.

  • Page 124: Removing And Refitting The Crank Shaft And The Stitch Length Transmission

    4 Removal and Refitting of Components 2024-06 EN 4.4 Mechanical Components 4.4.21 Removing and Refitting the Crank Shaft and the Stitch Length Transmission Screwdriver T20, Torx Pinning Tool, Long Spring Mounting Tool Screw T20, Torx Screw T20, Torx Removing the Crank Shaft and the Stitch Length 5.

  • Page 125: Settings

    5 Settings 2024-06 EN 4.4 Mechanical Components Basics - General Testing and Adjustment Adjusting the Mechanical Release of the Information ..........126 5.6.3 Clutch Carriage ......... 149 Belt ............127 Adjusting the Gap Dimension of the Spring 5.6.4 on the Clutch Lever ........150 Adjusting the Belt Tension of the Upper 5.2.1 Shaft - Base Shaft ........

  • Page 126: Basics - General Testing And Adjustment Information

    5 Settings 2024-06 EN 5.1 Basics - General Testing and Adjustment Information 5.1 Basics - General Testing and Adjustment Information For every service, the accessories supplied with the machine or intended for this machine must be used. Power Cable Foot Control Buttonhole Foot Embroidery Module Hoop BSR foot...

  • Page 127: Belt

    5 Settings 2024-06 EN 5.2 Belt 5.2 Belt 5.2.1 Adjusting the Belt Tension of the Upper Shaft - Base Shaft Required parts and tools: Screwdriver T20, Torx Adjusting Key Screw T20, Torx Bohrung Markierung Preparation Setting The marking (c) on the chassis indicates the factory Remove the covers.

  • Page 128: Adjusting The Belt Tension Of The Main Motor

    5 Settings 2024-06 EN 5.2 Belt 5.2.2 Adjusting the Belt Tension of the Main Motor Required parts and tools: 500 g Screwdriver T20, Torx Screw T20, Torx Preparation NOTICE! Too tightly tensioned belts will cause stiff running. Too slackly tensioned belts may Remove the covers. ►...

  • Page 129: Adjusting The Belt Tension Of The Hook Driver Drive

    5 Settings 2024-06 EN 5.2 Belt 5.2.3 Adjusting the Belt Tension of the Hook Driver Drive Required parts and tools: Screwdriver T20, Torx max -1mm Belt Tensioner Chassis Screw T20, Torx Preparation Setting Remove the covers. 1. Loosen the screw (c). ► 2. Press the belt tensioner (a) downwards until the belt tensioner is at the same height, up to Check max. − 1 mm below the freearm surface.

  • Page 130: Head Section

    5 Settings 2024-06 EN 5.3 Head Section 5.3 Head Section 5.3.1 Aligning the Head Frame Plate with the Stitch Plate in y- Direction Required parts and tools: Screwdriver T20, Torx Sliding Gauge 18 mm Plug PCBA Threader Screw T20, Torx Preparation Setting Remove the covers. 1.

  • Page 131: Aligning The Head Frame Plate With The Stitch Plate In X-Direction

    5 Settings 2024-06 EN 5.3 Head Section 5.3.2 Aligning the Head Frame Plate with the Stitch Plate in x- Direction Required parts and tools: Reverse Pattern Foot #1D Screwdriver T20, Torx Angle Adjusting Excenter Screw T20, Torx Angle Adjusting Excenter Preparation Setting Attach the presser foot. ►...

  • Page 132: Adjusting The Height Of The Embroidery Foot

    5 Settings 2024-06 EN 5.3 Head Section 5.3.3 Adjusting the Height of the Embroidery Foot Required parts and tools: Stitch Plate Carrier Pinning Tool, Long Loop Lift Gauge 2.62 mm Adjusting Plates Screwdriver T8, Torx Toothed Wheel Pinning Tool, Long Adjusting Plates Pan head screw M3x8, Torx Preparation Check 1.

  • Page 133: Adjusting The Height Of The Presser Foot Holder

    5 Settings 2024-06 EN 5.3 Head Section 5.3.4 Adjusting the Height of the Presser Foot Holder Required parts and tools: Reverse Pattern Foot #1C Screwdriver T20, Torx Tension Lever Schaftnocken Presser Foot Holder Screw T20, Torx Preparation Check that the clamping position of the tension ►...

  • Page 134: Adjusting The Position Of The Needle Bar To The Presser Foot Bar

    5 Settings 2024-06 EN 5.3 Head Section 5.3.5 Adjusting the position of the Needle Bar to the Presser Foot Bar Required parts and tools: Reverse Pattern Foot #1C Needle 130/705 H 100 white piece of paper Screwdriver T15, Torx Spanner 10 0,6mm 0,4mm Toothed Wheel Spanner 10 Screwdriver T15, Torx...

  • Page 135: Adjusting The Needle Distribution

    5 Settings 2024-06 EN 5.3 Head Section 5.3.6 Adjusting the Needle Distribution Required parts and tools: Pinning Tool, Long Adjusting Needle 130/705 H TCN 80 Screwdriver T10, Torx Eccentric Key Eccentric Key Screw T10, Torx Exzentereingriff Preparation 2. Switch off the machine and remove the pinning tool.

  • Page 136: Adjusting The Zigzag Limitation

    5 Settings 2024-06 EN 5.3 Head Section 5.3.7 Adjusting the Zigzag Limitation Required parts and tools: Screwdriver T10, Torx Screw T10, Torx Zickzack-Begrenzung Preparation Setting 1. Start the machine in the service program. Video 2. Select test 5a. [} see page 194]   1. Loosen the screw (b). Check 2.

  • Page 137: Needle/Hook Area

    5 Settings 2024-06 EN 5.4 Needle/Hook Area 5.4 Needle/Hook Area 5.4.1 Adjusting the Synchronicity of the Upper Shaft to the Base Shaft Loop Lift Gauge 2.62 mm Pinning Tool, 3.0 mm Pinning Tool, 3.0 mm Setscrew T10, Torx Setscrew T10, Torx Preparation Adjusting the Upper Shaft to the Base Shaft 1.

  • Page 138: Adjusting The Loop Lift

    5 Settings 2024-06 EN 5.4 Needle/Hook Area 5.4.2 Adjusting the Loop Lift Required parts and tools: Pinning Tool, Long Loop Lift Gauge 2.62 mm Screw T10, Torx Pinning Tool, Long Anschlag Chassis Anschlag Chassis 2.62 mm Hook Tip Setscrew T10, Torx Setscrew T10, Torx Preparation Check 1.

  • Page 139: Adjusting The Distance Between The Needle And The Hook

    5 Settings 2024-06 EN 5.4 Needle/Hook Area 5. Attach the loop lift gauge with clamping piece 9. Eliminate the play between the bevel gear and the from the right, push it all the way up (b) and fix it white gear wheel and tighten the setscrew (f). in place.

  • Page 140: Aligning The Stitch Plate In Y-Direction

    5 Settings 2024-06 EN 5.4 Needle/Hook Area 2. Turn the screw (c) for fine adjustment. Check that 3. Connect the plug (b) with the PCBA threader. the gap between the needle groove and the hook tip comes up to 0.01 – 0.05 mm. 5.4.4 Aligning the Stitch Plate in y-Direction Required parts and tools: Needle 130/705 H 100 Screwdriver T6, Torx...

  • Page 141: Adjusting The Needle Height

    5 Settings 2024-06 EN 5.4 Needle/Hook Area 5.4.5 Adjusting the Needle Height Required parts and tools: Distance Gauge, 18.98 mm (silver) Available Sizes of the Needle Stop Screw (d) Distance Step Gauge Screwdriver T6, Torx Art. No. Ø in mm Note 0326675.0.00 1.50 Black- burnished 0326675.0.01 1.85 Galvanised...

  • Page 142: Fabric Feed (Feed Dogs - Presser Foot)

    5 Settings 2024-06 EN 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5.1 Adjusting the Feed Dog in x-Direction Required parts and tools: Pinning Tool, Long Eccentric Key Screwdriver T20, Torx Pinning Tool, Long Screw T20, Torx Eccentric Key Preparation Setting...

  • Page 143: Adjusting The Dual Feed In X-Direction

    5 Settings 2024-06 EN 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5.2 Adjusting the Dual Feed in x-Direction Required parts and tools: Pinning Tool, Long Screw T10, Torx Eccentric Key Pinning Tool, Long Screw T10, Torx Eccentric Key Preparation Setting 1. Adjust the feed dog in x-direction. [} see page 142] Video 2.

  • Page 144: Adjusting The Height Of The Feed Dog

    5 Settings 2024-06 EN 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5.3 Adjusting the Height of the Feed Dog Required parts and tools: Adjusting Gauge Feed Dog Height Screwdriver T10, Torx Screwdriver T8, Torx Open-end Wrench 6 Adjusting Gauge Feed Dog Height Screw T10, Torx Setscrew T8, Torx Excenter Shaft...

  • Page 145: Synchronizing The Dual Feed With The Feed Dog

    5 Settings 2024-06 EN 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5.4 Synchronizing the Dual Feed with the Feed Dog Required parts and tools: 2 x Pinning Tool, Long Sync Plate Screwdriver T10, Torx Pinning Tool, Long Pinning Tool, Long Sync Plate Toothed Wheel Screw T10, Torx Dual Feed Preparation...

  • Page 146: Adjusting The Mechanical Default Setting Of The Balance For The Dual Feed

    5 Settings 2024-06 EN 5.5 Fabric Feed (Feed dogs - Presser foot) 5.5.5 Adjusting the Mechanical Default Setting of the Balance for the Dual Feed Required parts and tools: 2 x Pinning Tool, Long Screwdriver T10, Torx Pinning Tool, Short Pinning Tool, Long Toothed Belt Pulley Screw T10, Torx Screwdriver T10, Torx Preparation...

  • Page 147: Thread Cutter

    5 Settings 2024-06 EN 5.6 Thread Cutter 5.6 Thread Cutter 5.6.1 Adjusting the Electromagnet on the Clutch Carriage Required parts and tools: Screwdriver T8, Torx 0,3 mm Screw T8, Torx Release Fork Preparation Setting 1. Start the machine in the service program. 1. Remove the stepper motor of the sideways-motion. 2.

  • Page 148: Adjusting The Clutch Carriage Position

    5 Settings 2024-06 EN 5.6 Thread Cutter 5.6.2 Adjusting the Clutch Carriage Position Required parts and tools: Pinning Tool, 3.0 mm Eccentric Key Screwdriver T10, Torx Pinning Tool, 3.0 mm Pinning Tool, 3.0 mm Einstellbohrung Screw T10, Torx Preparation Setting Look at the front of the machine. 1.

  • Page 149: Adjusting The Mechanical Release Of The Clutch Carriage

    5 Settings 2024-06 EN 5.6 Thread Cutter 5.6.3 Adjusting the Mechanical Release of the Clutch Carriage Required parts and tools: Adjusting Gauge for Thread Cut Release Screwdriver T8, Torx Adjusting Gauge for Thread Cut Release Setscrew T8, Torx Preparation Setting Adjust the loop lift. [} see page 138] 1.

  • Page 150: Adjusting The Gap Dimension Of The Spring On The Clutch Lever

    5 Settings 2024-06 EN 5.6 Thread Cutter 5.6.4 Adjusting the Gap Dimension of the Spring on the Clutch Lever Required parts and tools: Circlip Bracket Ø1.5 Auxiliary Tools Feeler Gauge, 0.10 mm Screwdriver T8, Torx Release Fork Coupling Ring Circlip 1.5 Washer 2.2x7.5x0.5 Pressure Spring Connecting Bracket Feeler Gauge, 0.10 mm...

  • Page 151: Adjusting The Thread Cutter

    5 Settings 2024-06 EN 5.6 Thread Cutter 5.6.5 Adjusting the Thread Cutter Required parts and tools: Pinning Tool, 3.0 mm Allen Wrench T8, Torx Screwdriver T8, Torx Open-end or Ring Wrench 5 Auslösehebel Absteckwerkzeug, 3.0 mm Anschlagbolzen Schraube Torx 8 Screw T8, Torx Schraubendreher Torx T8 kurz Preparation Setting 1.

  • Page 152: Synchronisation Position Hall

    5 Settings 2024-06 EN 5.7 Synchronisation Position Hall 5.7 Synchronisation Position Hall Refer to [} see page 207]...

  • Page 153: Needle Drive Threader

    5 Settings 2024-06 EN 5.8 Needle Drive Threader 5.8 Needle Drive Threader 5.8.1 Adjusting the Guide of the Needle Bar Required parts and tools: Adjusting Key Screwdriver T6, Torx Screwdriver T10, Torx Adjusting Key Screw T10, Torx Screw T6, Torx Preparation Setting 1. Bring the needle bar to the lowest position. 1.

  • Page 154: Adjusting The Height Of The Threader Head

    5 Settings 2024-06 EN 5.8 Needle Drive Threader 5.8.2 Adjusting the Height of the Threader Head Required parts and tools: Screwdriver T10, Torx Screwdriver T6, Torx Distance Gauge Adjusting Key Pan Head Screw T10, Torx with Collar Adjusting Gauge (Black Burnished) Lowering Safety Device Positioner Bar Basting Lever Driving Lock...

  • Page 155: Adjusting The Laser Position

    5 Settings 2024-06 EN 5.8 Needle Drive Threader 9. Adjust the gap dimension by inserting the adjusting 11. Remove the distance gauge (b). key (i) of approx. 3.5 cm between the needle bar 12. Refit the basting housing and tighten the screw (a). support and retraction clamp and tighten it with 13.
  • Page 156 5 Settings 2024-06 EN 5.8 Needle Drive Threader Setting Video   1. Mark the buffer adjustment screw (a) with a marker pen in order to reach the same position again later. 2. Unscrew the buffer adjustment screw (a) for exactly 2 turns. 3. Turn the handwheel to move the needle bar to its top position.

  • Page 157: Thread Tension

    5 Settings 2024-06 EN 5.9 Thread Tension 5.9 Thread Tension 5.9.1 Adjusting the Regulator Spring Required parts and tools: Screwdriver T10, Torx Screwdriver T8, Torx Spring Balance Gauge SERALON Sewing Thread in Red 12 g - 15 g 1,6 mm Screw T8, Torx Excenter Screw T10, Torx Knurled Disk Preparation...

  • Page 158: Adjusting The Upper Thread Tension

    5 Settings 2024-06 EN 5.9 Thread Tension 5.9.2 Adjusting the Upper Thread Tension Required parts and tools: Calibration Thread, DMC 50 in White Trigger Pull Weight (5-piece) Rotary Knob (Stitch Width) Preparation 2. Tap "Confirm" to go to the next test step. 3. Check that the 85 g adjusting tool hangs freely on 1.

  • Page 159: Adjusting The Lower Thread Tension

    5 Settings 2024-06 EN 5.9 Thread Tension 5.9.3 Adjusting the Lower Thread Tension Required parts and tools: Slotted Screwdriver Calibration Thread, DMC 50 in White Trigger Pull Weight for Bobbin Thread Tension + 5 g + 3 g 13,6 g 26,6 g Slotted Screwdriver Preparation Checking the Yellow Bobbin Case (HTTBC) 1.

  • Page 160: Adjusting The Bobbin Winder

    5 Settings 2024-06 EN 5.9 Thread Tension 5.9.4 Adjusting the Bobbin Winder Required parts and tools: Bobbin Winder Gauge Screwdriver T20, Torx Screwdriver T10, Torx Screwdriver T20, Torx Bobbin Winder Gauge Screwdriver T10, Torx Preparation   NOTICE 1. Switch the machine on. Impairment of the stitch quality Unevenly filled bobbin threads can impair the stitch 2.

  • Page 161: Service Program

    6 Service Program 2024-06 EN 5.9 Thread Tension Handling the Service Program ....163 6.6.7 BSR Sensor (4g) ......... 182 6.1.1 Starting/Ending the Service Program ..163 6.6.8 PCBA Position (4h)........182 6.1.2 Operating the Service Program ....164 6.6.9 Speaker (4i) ..........183 Starting Page of the Service Program ..

  • Page 162: Thread Tension

    6 Service Program 2024-06 EN 5.9 Thread Tension 6.8.12 Testing the Speed (6m) ......206 6.8.13 Checking BSR Sewing Test (6n)....206 Calibration of the magnetic position sensor 6.8.14 (6o) ............207 6.8.15 Weight Difference Measurement - Info (6r) 207 Calibration of Upper Thread Tension Info 6.8.16 (6s)............

  • Page 163: Handling The Service Program

    6 Service Program 2024-06 EN 6.1 Handling the Service Program 6.1 Handling the Service Program In this special service program, the machine performs the necessary mechatronic and software synchroni- sations or queries specific parameters. 6.1.1 Starting/Ending the Service Program Starting the Service Program Starting the Service Program without Touch Screen Response Prerequisite: Prerequisite:...

  • Page 164: Operating The Service Program

    6 Service Program 2024-06 EN 6.1 Handling the Service Program 6.1.2 Operating the Service Program Selecting the Service Menu Making Entries in the Service Program By tapping on a service menu (1-11), different infor- Text entries Default setting mation is displayed. for text entry. Informative Menu Note Menu @&!...

  • Page 165: Starting Page Of The Service Program

    6 Service Program 2024-06 EN 6.2 Starting Page of the Service Program 6.2 Starting Page of the Service Program Stickmodul Signale Service-Info WiFi (Techniker-Netzwerk) Einstellungen Sensoren Schlusskontrolle Touchscreen Motoren...

  • Page 166: Service Information (1)

    6 Service Program 2024-06 EN 6.3 Service Information (1) 6.3 Service Information (1) a Information   c Operating Hours   e Stitch Counter of the BSR   g Saving and Loading the Customer Setting   i Dealer Information   k Thread Cutter Counter   6.3.1 Information (1a) Language Display of the selected system language Purchase date Entry of the purchase date of the machine 1.

  • Page 167: Firmware And Repair History (1B)

    6 Service Program 2024-06 EN 6.3 Service Information (1) 6.3.2 Firmware and Repair History (1b) Version of the Software and Software Data Repair History Info for Technicians The overview of system-relevant information helps to Repairs can be entered in keywords. An overview of the recognise whether a new update should be loaded.

  • Page 168: Stitch Counter Of The Machine (1D)

    Number of stitches executed by BSR. 6.3.5 Stitch Counter of the BSR (1e) The overview displays information on the BSR foot if Chassis Number BERNINA Stitch the BSR foot is connected to the machine. Regulator Production Date Manufacturing Date of the BSR Foot...

  • Page 169: Service Data (1F)

    USB stick after the repair. Saving Customer Settings 1. Insert a new BERNINA USB stick. 2. Select the field Save the customer settings. ð The customer settings are saved on the BERNINA USB stick. 3. Remove the BERNINA USB stick.

  • Page 170: Customer Information (1H)

    6 Service Program 2024-06 EN 6.3 Service Information (1) Loading Customer Settings 1. Insert the BERNINA USB stick with the customer settings. 2. Select the field Load the Customer settings. ð The customer settings are loaded. ð Meldung «Successful» erscheint. 3. Remove the BERNINA USB stick.

  • Page 171: Log File (1J)

    ð The entry window appears. www.bernina.com The dealer information can also be read in as a TXT file 1. Insert the BERNINA USB stick with the dealer infor- using a BERNINA USB stick.NOTICE! The file must be mation. saved as "dealerdata.txt" in the root menu on the 2.

  • Page 172: Display, Lighting (2)

    6 Service Program 2024-06 EN 6.4 Display, Lighting (2) 6.4 Display, Lighting (2) LCD Display Brightness Black Display White Display RGB Display Button Backlights Alarm Clock/Time Sewing Light Not used 6.4.1 Display Brightness (2b) Test Procedure 1. Adjust the brightness using the multifunction button (stitch width) or +/- on the screen. ð...

  • Page 173: White Display (2D)

    6 Service Program 2024-06 EN 6.4 Display, Lighting (2) 6.4.3 White Display (2d) Test Procedure Check the white display for dirt. ► Repair Notes Clean the display. [} see page 236] ► 6.4.4 RGB Display (2e) Test Procedure The screen shows if there are faults with a colour. ►...

  • Page 174: Sewing Light (2H)

    Repair Notes 1. Check the cable and the plug for damage and the correct fit. 2. Replace the sewing light. 3. Replace the PCBA base. Test Card (2i) The test card that is used for BERNINA internal tests.

  • Page 175: Sensors (3)

    6 Service Program 2024-06 EN 6.5 Sensors (3) 6.5 Sensors (3) Sensor for Dual Feed Detection Miro Switch Bobbin Winder Freehand System (FHS) Lower Thread Observer (LTO) Overlift Presser Food Switch (Presser Foot Height Threader Sensor Sensor) 6.5.1 Threader Sensor (3a) Test Procedure 1. Remove the head cover. 2.

  • Page 176: Presser Foot Height Sensor (3B)

    6 Service Program 2024-06 EN 6.5 Sensors (3) 6.5.2 Presser Foot Height Sensor (3b) Test Procedure 3. Press the start/stop button to confirm. ð The presser foot is lowered. 1. Attach the Reverse Pattern Foot #1C. ð The distance in mm between the sewing foot 2.

  • Page 177: Feed Dog Drop (3D)

    6 Service Program 2024-06 EN 6.5 Sensors (3) 6.5.4 Feed Dog Drop (3d) Test Procedure Repair Notes 1. Press the button "Feed dog up/down" at the 1. Check the cable and the plug for damage and the bottom of the handwheel cover. correct fit. ð...

  • Page 178: Free Hand System - Fhs (3H)

    6 Service Program 2024-06 EN 6.5 Sensors (3) 6.5.7 Free Hand System - FHS (3h) Test Procedure 1. Insert the knee lifter into the knee lifter connection. 2. Push the Knee Lifter with the knee to the right to raise the presser foot. ð...

  • Page 179: Signals (4)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6 Signals (4) In this section, signals can be called up by an action on the machine. Multi-function Knobs Function Buttons Speed Control Foot Control PS2 Interface (Info) Upper Thread Sensor BST Sensor Test PCBA Position Speaker USB Ports Basting Solenoid...

  • Page 180: Multifunction Knobs (4A)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.1 Multifunction Knobs (4a) Test Procedure Rotate the multifunction knobs. ► ð The respective control panel shows the movement. Repair Notes 1. Replace the PCBA cover left. [} see page 67] 2. Replace the cable PCBA cover left to the PCBA base.

  • Page 181: Foot Control (4D)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.4 Foot Control (4d) Test Procedure 1. Connect the foot control. ð The section "Connector" changes its colour to turquoise. 2. Slowly press foot control down as far as stop. 3. The position of the foot control can be read in per cent.

  • Page 182: Bsr Sensor (4G)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.7 BSR Sensor (4g) Test Procedure 1. Fit the BSR Foot. 2. Select test 4g. 3. Place the fabric under the presser foot. 4. Lower the presser foot. 5. Tap the symbol to start the test. ð...

  • Page 183: Speaker (4I)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.9 Speaker (4i) Test Procedure 1. Tap "Start Speaker Test" to start the test. ð A repetitive beep is audible. 2. Tap "Start Speaker Test" again to end the test. Repair Notes 1. Check the cable and the plug for damage and the correct fit.

  • Page 184: Electromagnet Of The Basting (4K)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.11 Electromagnet of the Basting (4k) Test Procedure 1. Tap the symbol to start the test procedure. ð The message "Running" appears. ð The electromagnet of the basting clicks. 2. Tap the symbol again to end the test procedure. ð...
  • Page 185 6 Service Program 2024-06 EN 6.6 Signals (4) Presser feet used (categories) Position Prism Requirements 9 mm Presser Foot. Example: Reverse Pattern Foot #1C, Open Embroidery Foot #20C, Sideways-motion Foot #40C. 9 mm Walking Foot Example: Reverse Pattern Foot #1D, Zipper Foot #4D, Zigzag Foot #52D. Walking Foot - Straight-stitch Foot Example: Jeans Foot #8D, Patchwork Foot #37D, Patchwork...
  • Page 186 6 Service Program 2024-06 EN 6.6 Signals (4) Presser feet used (categories) Position Prism Requirements 5.5 mm Walking Foot with presser not applied foot recognition. Straight-stitch Foot with presser foot recognition. This foot group is no longer produced. 5.5 mm with presser foot recog- nition.

  • Page 187: Bsr Foot Interface (4M)

    6 Service Program 2024-06 EN 6.6 Signals (4) Presser feet used (categories) Position Prism Requirements Buttonhole Foot with Slide #3A The slide of the presser foot. The signal will alter between 4 states: no signal at all, the two signals together (orange and green), orange only, green only.

  • Page 188: Stitch Plate Sensor (4N)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.14 Stitch Plate Sensor (4n) Preparation Test Procedure Fit the stitch plate with detection. To start the test, tap the stitch plate symbol (a). ► ► ð The stitch plate with the corresponding stitch plate ID (e) is displayed. ð...

  • Page 189: Laser (4O)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.15 Laser (4o) Test Procedure 1. Tap the symbol to start the test. ð The laser lights up permanently. ð The message "Laser is ON" changes to green. 2. Tap the symbol again to end the test. ð...

  • Page 190: Electromagnet Of The Clutch Carriage (4Q)

    6 Service Program 2024-06 EN 6.6 Signals (4) 6.6.17 Electromagnet of the Clutch Carriage (4q) Test Procedure 1. Tap the symbol to start the test. ð The message "Running" appears. ð The electromagnet of the clutch carriage clicks. 2. Tap the symbol again to end the test. ð...

  • Page 191: Motors (5)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7 Motors (5) In this section, the stepper motors can be tested for their function. Stitch Width (SW) Presser foot pressure Upper Thread Tension (TT) Dual Feed (BDF) Pinning positions of the stepper motors Bobbin Winder Stitch Length (SL) Sideways Motion (SM) Balance Stitch Length (MBA)

  • Page 192: Stitch Width - Sw (5A)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.1 Stitch Width - SW (5a) Test Procedure 1. Tap the symbol to activate the stepper motor. ð The stepper motor stitch width is active. ð The needle bar support moves to the left and right.

  • Page 193: Upper Thread Tension - Tt (5C)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.3 Upper Thread Tension - TT (5c) Test Procedure 1. Tap the symbol to start the test. ð The stepper motor upper thread tension moves back and forth. ð The thread tension opens and closes. ð...

  • Page 194: Pinning Positions Of The Stepper Motors (5E)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.5 Pinning Positions of the Stepper Motors (5e) Test Procedure 1. Tap the symbol to start the test. ð All stepper motors move into their respective home position (pinning position). ð The message "All Stepper Motors in Pinning Position"...

  • Page 195: Stitch Length - Sl (5G)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.7 Stitch Length - SL (5g) Test Procedure 1. Tap the symbol to start the test. ð The stepper motor stitch length is active. ð The feed dog moves back and forth. ð The message "Running" is displayed. 2.

  • Page 196: Feed Dog Drop (5K)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.9 Feed Dog Drop (5k) Test Procedure 1. Tap the symbol to start the test. ð The motor of the feed dog drop runs contin- uously in both directions. ð The message "Running" is displayed. 2.

  • Page 197: Balance Stitch Length (5J)

    6 Service Program 2024-06 EN 6.7 Motors (5) 6.7.11 Balance Stitch length (5j) Test Procedure 1. Tap the symbol to start the test. ð The stepper motor balance stitch length is active. ð The message "Running" is displayed. 2. Tap the symbol again to end the test. ð...

  • Page 198: Adjustments (6)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8 Adjustments (6) Sewing-off Balance Reset to Factory Settings Buttonhole calibration Calibration Presser Foot Height Checking Process Steps Threading Operation Checking Process Steps Thread Cut Calibration Upper Thread Tension Calibration Camera Weight Difference Measurement (Info) Calibration Thread Cut Length Calibration Upper Thread Tension (Info) BSR Speed Test...

  • Page 199: Sewing-In (6A)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.1 Sewing-in (6a) Auswahlfeldern Oberfadenüberwachung Einnähen Oberfadenspannung Oberfadenspannungs-Wert Kalibrierung Oberfadenspannu Test Procedure 2. Tap and start the sewing mode (c). ð The sewing screen appears. 1. The thread observers can be switched off and on in ð...
  • Page 200 ð The foot control is deactivated in this mode. ð If the stitch formation is not as expected, use 2. Lower the BERNINA Dual Fee (BDF). the +/- buttons (e) to make the fine adjustment 3. Tap the diamond pattern (j).

  • Page 201: Buttonhole Calibration (6C)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.3 Buttonhole Calibration (6c) Test Procedure 1. Fit the Buttonhole Foot with Slide #3A. 2. Lower the presser foot. 3. Press the start/stop button to start the calibration. ð The lettering "Running" is displayed. ð The Buttonhole Foot with Slide moves back and forth.

  • Page 202: Resetting The Default Value For Upper Thread Tension (6F)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) Lettering on the Display Translation Expected Position of the Sync Disc Lower thread in thread reservoir Lower thread in thread reservoir 37.5° Set Min TTA and Set the thread tension adjustment 145.5° TTA_CUTTING_TENSIONS_VALUE (TTA) to minimum Separate upper and lower thread Thread cut of upper and lower 187.5°...

  • Page 203: Calibration Presser Foot Height (6H)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.7 Calibration Presser Foot Height (6h) Test Procedure 1. Attach the Reverse Pattern Foot #1C. 2. Tap the symbol to start the test. ð The presser foot is positioned on the stitch plate. ð The calibration process is started. 3.

  • Page 204: Calibrating The Upper Thread Tension (6J)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) Lettering on the Display Translation Expected Position of Thread Tension the Sync Disc displayed Needle up and threading Needle position up, 200° threading is performed Threader process will be completed, The threading process 205° clamp open is completed, the thread clamp is...

  • Page 205: Calibration Of Speed Control (6L)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 4. The test can only be exited once the complete process has been performed. Lettering on the Display Translation Needle position to be expected Start tie-on sequence Start tie-on sequence 220° Lift presser foot Raise the presser foot 35°...

  • Page 206: Testing The Speed (6M)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.12 Testing the Speed (6m) Test Procedure 1. Press the start/stop button to start the test. 2. Change the position of the speed control. ð The driving motor speed changes depending on the position of the slide control. ð...

  • Page 207: Calibration Of The Magnetic Position Sensor (6O)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.14 Calibration of the magnetic position sensor (6o) Test Procedure 1. Set the sewing machine to the loop lift position using the loop gauge. [} see page 138] 2. Press the grey button "Calibration position reached" in the loop lift position. 3.

  • Page 208: Numeric Keypad - Info - (6T)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.17 Numeric Keypad - Info - (6t) This test is intended to be used in production. Fig. 1: 6.8.18 Noise Check (6u) Test Procedure 1. Press the start/stop button (b) to start the test. 2. Change the position of the speed control (a). ð...
  • Page 209 6 Service Program 2024-06 EN 6.8 Adjustments (6) 6. Tap on the symbol "Center Pattern" to centre the The system uses green and red markings in the diamond pattern. corners to indicate whether the placement is correct or whether the diamond pattern is outside 7.
  • Page 210 6 Service Program 2024-06 EN 6.8 Adjustments (6) 13. Remove the embroidery hoop and tap the "Calibrate" symbol (n). 18. The process is completed, the position data is saved (t) and the camera calibration menu is exited. 14. Attach the 9mm stitch plate if it is not already attached.

  • Page 211: Thread Cut Length (6W)

    6 Service Program 2024-06 EN 6.8 Adjustments (6) 6.8.20 Thread Cut Length (6w) This process provides the option to set an optimal Test Procedure length of the thread after being cut, independently of Video each other for sewing and embroidery (different   position of the thread lever). The ideal thread lengths specified here ensure a reliable sewing start and reduce thread nests and thread breakage.
  • Page 212 6 Service Program 2024-06 EN 6.8 Adjustments (6) Setting the Thread Cut Length for Embroidering Repair Notes 1. Make sure that the threading is correct. 2. Check the function of the thread clamp. [} see page 189] 3. Make sure that a stitch plate carrier is fitted without a clamping plate.

  • Page 213: Embroidery Module (7)

    6 Service Program 2024-06 EN 6.9 Embroidery Module (7) 6.9 Embroidery Module (7) The embroidery module, as a separate assembly, is covered in its own service instructions. Mounting, settings and the service program are described in more detail there.

  • Page 214: Wifi (8)

    Repair Notes 1. Make sure that the firmware is up to date.https:// To compare the reception quality, use another iportal.bernina.com WiFi-compatible device with reception strength display. This helps to assess the reception sensi- 2. Customer complaint: The machine cannot be tivity of the WiFi module in the machine.

  • Page 215: Check-Out Test (11)

    6 Service Program 2024-06 EN 6.11 Check-out Test (11) 6.11 Check-out Test (11) Purpose This check-out is designed to give the technician the possibility to check the machine in its main categories, before delivering it to the customer. The first test (or calibration procedure) as listed below will appear automatically on starting menu 11.
  • Page 216 7 Sew-in of the Machine 2024-06 EN 6.11 Check-out Test (11) Creating a sewing-in pattern ..... 217 7.1.1 Standard Values for the Sew-in....217 7.1.2 Sewing Patterns for the Customer ..... 217 7.1.3 Straight Stitch..........218 7.1.4 Zigzag ............218 7.1.5 Satin Stitch ..........219 7.1.6 Honeycomb Stitch ........

  • Page 217: Sew-In Of The Machine

    7 Sew-in of the Machine 2024-06 EN 7.1 Creating a sewing-in pattern 7.1 Creating a sewing-in pattern 7.1.1 Standard Values for the Sew-in The sew-in of the machine is considered the final Materials for the Sew-in check. A correctly adjusted machine is absolutely If other fabrics and / or sewing threads are used, essential.

  • Page 218: Straight Stitch

    7 Sew-in of the Machine 2024-06 EN 7.1 Creating a sewing-in pattern 7.1.3 Straight Stitch Prerequisite Test criteria and assessment of the stitch Default Stitch Setting 1. Is the thread feed even on both sides of the fabric? The seam is straight. 2. Is the knotting of the upper and lower threads centered in the sewing material? 3.

  • Page 219: Satin Stitch

    7 Sew-in of the Machine 2024-06 EN 7.1 Creating a sewing-in pattern 7.1.5 Satin Stitch Prerequisite Test criteria and assessment of the stitch Stitch Width: 5 1. Is the stitch formation consistent? Stitch Length: 0.4 2. Is the lower thread not visible on the right side of The seam is straight.

  • Page 220: Standard Buttonhole

    7 Sew-in of the Machine 2024-06 EN 7.1 Creating a sewing-in pattern 7.1.7 Standard Buttonhole If the customer complains about the buttonhole, it Test criteria and assessment of the stitch must be sewn with the Buttonhole Foot with Slide 3A 1. Are both beads the same width and do they run that comes with the sewing machine.

  • Page 221: Firmware

    8 Firmware 2024-06 EN 7.1 Creating a sewing-in pattern Introduction ..........222 Formatting the USB stick ......223 Downloading and Saving Firmware.... 224 Performing the Firmware Update ....225 Alternative Update Process ......226...

  • Page 222: Introduction

    Internet access Empty USB stick (FAT32-formatted) Note: The BERNINA USB stick (special accessory) is intended for use with all BERNINA machines that have a USB port. It is already formatted for FAT32. Other USB sticks may not work. BERNINA recommends always...

  • Page 223: Formatting The Usb Stick

    8 Firmware 2024-06 EN 8.2 Formatting the USB stick 8.2 Formatting the USB stick To ensure that the USB stick works with the BERNINA machine, the USB stick must be formatted in the FAT32 file system on a computer with Windows operating system.

  • Page 224: Downloading And Saving Firmware

    1. Open the Internet browser and enter «https:// top level of the USB stick. iportal.bernina.com/» in the address bar. 4. Check the box for Show extracted files when 2. Click on the tab Products and select the desired complete and click on the Extract button.

  • Page 225: Performing The Firmware Update

    8 Firmware 2024-06 EN 8.4 Performing the Firmware Update 8.4 Performing the Firmware Update Preparation Performing the Firmware Update (manually triggered) 1. Download the firmware. [} see page 224] 2. Format the USB stick. [} see page 223] 3. Unpack the firmware on the USB stick. Performing the Firmware Update (automatic detection of the latest firmware) 1.

  • Page 226: Alternative Update Process

    8 Firmware 2024-06 EN 8.5 Alternative Update Process 8.5 Alternative Update Process An alternative update process is not available for the B 990.
  • Page 227 9 Maintenance Guidelines 2024-06 EN 8.5 Alternative Update Process Objective and purpose of the maintenance guideline ........... 228 Explanations of the Maintenance Messages229 Resetting Maintenance Messages ....230 Maintenance Interval ......... 231 Wear-and-Tear-Parts Definition....232 Maintenance Procedure ......233 Cleaning and Disinfection ......236...

  • Page 228: Maintenance Guidelines

    9 Maintenance Guidelines 2024-06 EN 9.1 Objective and purpose of the maintenance guideline 9.1 Objective and purpose of the maintenance guideline The technician is provided with a guideline that shows which activities are to be performed with the maintenance. This improves service- and repair quality. The dealer can calculate the expected maintenance costs for the user.

  • Page 229: Explanations Of The Maintenance Messages

    9 Maintenance Guidelines 2024-06 EN 9.2 Explanations of the Maintenance Messages 9.2 Explanations of the Maintenance Messages When does a message to clean/oil the machine appear? Once the bar is at 100%. The message appears when the machine is switched on until cleaning/oiling is confirmed.

  • Page 230: Resetting Maintenance Messages

    9 Maintenance Guidelines 2024-06 EN 9.3 Resetting Maintenance Messages 9.3 Resetting Maintenance Messages Maintenance messages can be reset in the respective test in the service program. Message on cleaning/oiling the machine. [} see page 169] message on servicing the machine. [} see page 169] Message on cleaning the thread cutter. [} see page 171]...

  • Page 231: Maintenance Interval

    9 Maintenance Guidelines 2024-06 EN 9.4 Maintenance Interval 9.4 Maintenance Interval Maintenance Interval Message When switching on the next 3 times When switching on the next 3 times needs to be reset by a technician When switching on the next 3 times When switching on the next 3 times needs to be reset by a technician When switching on the next 3 times When switching on the next 3 times...

  • Page 232: Wear-And-Tear-Parts Definition

    The service life of the machine was defined for In order to ensure continuously defect-free household use. operation of the machine, BERNINA recommends checking and replacing the parts according to the In the case of intensive use for which the machine table once the maintenance interval is reached.

  • Page 233: Maintenance Procedure

    Recommendation: Save the log file before the necessary. maintenance check.[} see page 171] The service and maintenance instructions and technical information in the BERNINA iPortal serve Functional check as the basis for the maintenance work to be carried Considering any additional customer complaint. The out.
  • Page 234 9 Maintenance Guidelines 2024-06 EN 9.6 Maintenance Procedure Performed What Checkpoints □ Mechanical Quality of the Machine Shaft and Cams Play Thread take-up Crank Needle Bar Support / Needle Bar Hook Driver Bearing Bevel gears Bobbin Case / Hook Maintenance checklist Performed What Checkpoints □...
  • Page 235 9 Maintenance Guidelines 2024-06 EN 9.6 Maintenance Procedure Measures after the maintenance Reset the maintenance messages.[} see page 169] Reset the thread cutter counter. [} see page 171] If changes have been made to customer data, load the customer data.[} see page 169] Perform the final check-out in the service program. [} see page 215] Create a sew-in sample for the customer.[} see page 217]...

  • Page 236: Cleaning And Disinfection

    9 Maintenance Guidelines 2024-06 EN 9.7 Cleaning and Disinfection 9.7 Cleaning and Disinfection Microfibre cleaning cloth     WARNING Vacuum cleaner with a thin attachment Never use alcohol, benzine, thinner or other Office equipment cleaner with antistatic effect corrosive liquids or abrasive pastes or cleaning Brush and cotton cleaning cloth agents.

  • Page 237: Appendix

    Lubricating the Thrust Fork and the 10.1.10 Sideways Motion ........244 Lubricating the Clutch Carriage and the 10.1.11 Belt Pulley..........244 10.1.12 Lubricate Base Shaft ........245 10.1.13 Lubricating the Stitch Length Gear..... 246 10.2 Technical Summary B 990......247...

  • Page 238: Lubrication Diagram

    Generally, 1 drop of the specified BERNINA oil should be used. 10.1.2 Lubricate Head Frame Required parts and tools: Sewing Machine Oil OY 100 K...

  • Page 239: Lubricate Dual Feed

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.3 Lubricate Dual Feed Required parts and tools: Lubricant UH1 14-1600...

  • Page 240: Sliding Threader/Needle Drive

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.4 Sliding Threader/Needle Drive Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600...

  • Page 241: Lubricate The Tooth Segment Of The Needle Bar Support

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.5 Lubricate the Tooth Segment of the Needle Bar Support Required parts and tools: Lubricant UH1 14-1600...

  • Page 242: Lubricate The Upper Thread Tension Unit

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.6 Lubricate the Upper Thread Tension Unit Required parts and tools: Lubricant UH1 14-1600 10.1.7 Lubricate Dual Feed Splitter Shaft Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600...

  • Page 243: Lubricating The Main Shaft

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.8 Lubricating the Main Shaft Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600 10.1.9 Lubricate Hook/Hook Driver Required parts and tools: Sewing Machine Oil Velocite 6...

  • Page 244: Lubricating The Thrust Fork And The Sideways Motion

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.10 Lubricating the Thrust Fork and the Sideways Motion Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600 10.1.11 Lubricating the Clutch Carriage and the Belt Pulley Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600...

  • Page 245: Lubricate Base Shaft

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.12 Lubricate Base Shaft Required parts and tools: Sewing Machine Oil OY 100 K Lubricant UH1 14-1600...

  • Page 246: Lubricating The Stitch Length Gear

    10 Appendix 2024-06 EN 10.1 Lubrication Diagram 10.1.13 Lubricating the Stitch Length Gear...

  • Page 247: Technical Summary B 990

    10 Appendix 2024-06 EN 10.2 Technical Summary B 990 10.2 Technical Summary B 990 Term Value Unit Maximum Speed 1200 Stitches per Minute Needle System 130/705 Measurements without the Spool Pin (W × H × D) 675 × 420 × 245 (26.6 × 16.5 × 9.7) (in) Measurements incl.
  • Page 248 Display Backlight in White Hook System BERNINA Hook Automatic Needle Threader Sideways Motion BERNINA Dual Feed Connector for BERNINA Stitch Regulator (BSR) USB Interface / USB Stick USB-A / U WiFi BERNINA Digitizer Automatic Presser Foot Lift Sewing foot height in normal position 12.5...
  • Page 250 BERNINA recommends threads from Service_B990.00A.04 2024-06 EN BERNINA International AG | CH-8266 Steckborn Switzerland | www.bernina.com | © Copyright by BERNINA International AG...

Table of Contents