Bernina 820 Service And Maintenance Manual
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Bernina 820 Service And Maintenance Manual

Bernina 820 Service And Maintenance Manual

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Service- and Maintenance Manual
BERNINA 830
BERNINA 820
1
BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland

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  • Page 1 Service- and Maintenance Manual BERNINA 830 BERNINA 820 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 2: Table Of Contents

    4.2 Electronics and sensors ........................36 4.2.1 PCBA-front-cover........................... 36 4.2.2 Stitch length and stitch width adjusting knobs ................37 4.2.3 Winder complete with threader start sensor .................. 37 4.2.4 Winder............................38 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 3 4.2.18 Sensor-support-ABC (presser foot sensor) ................. 51 4.2.19 PCBA-dual-feed-sensor ....................... 51 4.2.20 PCBA-accessory-connection ....................... 52 4.2.21 Centring plate with embroidery module connection (BERNINA 830) .......... 52 4.2.22 Lower thread indicator (PCBA Lower Thread Sensor) cpl............53 4.3 Mechanical Components........................54 4.3.1 Bobbin carrier..........................
  • Page 4 2a Touch screen calibration:......................... 121 2b LCD (display): ..........................122 2c Blank dark LCD (screen):......................... 122 2d Blank white LCD (screen): ....................... 122 2e RGB (Red, Green and Blue) screen: ....................123 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 5 6g Resetting to factory settings (Reset all): ..................157 6h Calibrating thread tension automatic: ....................157 6i Automatic Threading process: ......................158 6j Upper thread tension adjustment ..................... 158 6k Hook swing out device: ........................159 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 6 9.5.2 Measures to be taken after the service..................179 9.5.3 Functional check .......................... 180 9.5.4 Maintenance Checklist BERNINA 820 / 830................181 9.5.5 Embroidery module........................183 Document Revision History ..................184 Appendix – Document list.....................185 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 7: Chapter 1 - General Information

    This service manual is only available in electronic format. It can be downloaded from BERNINA Infogate at http://infogate.bernina.com under 'Service Manual' in the 'Tech. Service' register. If you don't have access to Infogate, contact your local BERNINA importer. They'll be glad to be of assistance. Disclamer...

  • Page 8: Warning: Dangerous Voltage Levels

    The capacitors require 30 seconds to discharge after the power supply has been switched off. We recommend waiting for the complete discharging of the capacitors before starting any servicing work on the PCBs. Caution ! Highvoltage Caution ! Highvoltage CFL Backlight only 820 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 9: Esd-Related Note: Electrostatic Discharge (Esd)

    4. Only use conductive ESD-capable plastic/foil pouches and ESD transport boxes for dispatching electronic components – even if the components might be faulty. Electrostatic_discharge_ESD 5. To prevent consequential damage or harm, treat faulty PCBs in the same manner as new ones. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 10: Tools And Gauges

    For servicing work. Holder for 032763.70.00 Mounting bracket demounted front cover Distance gauge for bobbin case 033247.70.00 Adjusting gauge retainer Distance gauge for Adjusting of threader head 030883.50.00 auto threader. height Black (phosphated) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 11 032376.70.00 Centering pin Fitting position of base plate Base shaft positioning 032911.50.00 Base shaft synchronisation 002733.50.00 Pinning tool, long Pinning positions 007937.50.00 Pinning tool 3mm Pinning position of console BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 12 398112 030 Spring mounting tool 001361.70.00 Eccentric key Various adjustments Tension of thread regulator 006038.50.00 Spring balance gauge spring Mounting aid for plugs and 031935.50.00 Plug mounting tool cables BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 13 Allows for more precise Commercially magnifier 2.5x adjustments in the hook-/needle available (magnification area approx. 4x) Gauging thread DMC Setting of the upper- and lower- 652010.20.++ 50 BLANC (white) thread tension BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 14: Handling Adjustments

    Thread take-up lever, needle bar, needle bar holder and needle bar clutch. • Main shaft (behind the balance piece), synchronisation disc. • Between the upper thread tension discs, and in the total thread passage ways and guides. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 15 Hook drive mechanism. • Console transmission. • Dual and sideways motion feed transmission. Area of electronics: • All sensors / light barriers / switches / electronic group of parts.. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 16: Technical Details

    USB Port USB Stick / PC 1 / 1 2 / 1 Battery Type / Volt CR2032 / 3V CR2032 / 3V Patterns Alphabet (characters) Sewing patterns incl. buttonholes Total number of Patterns 1162 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 17: Chapter 2 - Electronics And Wiring

    Console motor P-42 blue Stitch length motor P-24 white Console sensor P-15 white Embroidery module P-36 black Battery P-40 black Hook Sensor and Lower Thread Sensor P-100 black Wireless module BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 18: Pcba-Base (Bernina 820)

    Dual feed motor P-2112 Console motor P-42 blue Stitch length motor P-24 white Console sensor P-36 black Battery P-40 black Hook Sensor and Lower Thread Sensor P-100 black Wireless module BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 19: Pcba-Cpu-Module (Arm9) - General Information

    • According to picture. 2.2.1 PCBA-CPU-Module (ARM9) (BERNINA 830) P1 PCBA-Base P28 TFT screen Contacts of PCBA-Base 2.2.2 PCBA-CPU Module (ARM9) (BERNINA 820) P28 TFT screen Contacts of PCBA-Base BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 20: Pcba

    Task: • Connecting PCBA-base and PCBA-front-cover. • Registering of signals by PCBA-RET stitch-length and stitch- width knobs encoders. LED Sewing • Supply for LCD light freearm backlighting. P30 PCBA-Base BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 21: Pcba-Power

    If a fuse blows, this is always for a reason. The cause must be identified and removed. Only replacement fuses of the correct rating must be used. It is essential to test the functions on replacing fuse. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 22: Pcba-Threader-Sensor

    Light barriers 1 door is open or closed. • Bobbin door position The light barriers 2 recognizes whether the hook is turned out or in. Service Info Ref-#: 21434 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 23: Pcba-Console

    • By means of a rocker switch light barrier 2 recognizes Light barrier 2 the lowest position of the regulator threader during threading process, initializing the assembly. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 24: Pcba-Position

    5 photo transistors receive the light of the LED’s on Photo transistors their opposite and recognize when a bobbin is placed on the winder pin. The level of its filling is also recognized. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 25: Pcba-Lower-Thread-Sensor

    Two light barriers. Connection: • According to picture. Task: • Light barriers The position of the presser foot bar and the presser foot pressure are recognized via light barriers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 26: Version 2 With Light Barrier And Hall Sensor

    Infrared (IR) LED’s. • Photo transistors. Connection: • According to picture. Task: Sensors • Different presser feet and the movement of the buttonhole foot are recognized by the sensors. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 27: Cable Harness

    P 38 / PCBA-Base 6 Accessory Connector White P 38 / PCBA-Base 7 Dual Feed-Sensor White P 38 / PCBA-Base 8 LED Sewing light White P 38 / PCBA-Base BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 28: Block Diagram

    2.19 Block Diagram BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 29: Handling Of Electronic Components

    Electronic components that have been manipulated or repaired by oneself are excluded from the repair- /replacement process. They will be disposed of. BERNINA International AG reserves the right to charge the original price (of the new component) for electronic components that have been manipulated, repaired by oneself or improperly packaged.

  • Page 30: Chapter 3 - Troubleshooting

    Chapter 3 – Troubleshooting Troubleshooting is illustrated by the means of a mind map file from the Service DVD and is not included in this manual. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 31: Chapter 4 - Replacing Of Components

    (shim protrudes from head frame cover). Tip: Turn upper thread tension unit close by hand for a better positioning of shim washer d. Tighten screws a and b. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 32: Front Cover

    • In order to correct clearance i, remove head frame cover and adjust right screw b accordingly. Recheck with head frame cover fitted. • Retighten screw b BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 33: Rear Cover

    Take care not to damage the light barriers on the PCBA-hook-sensor. • Push piston c to the left and slide bobbin door in on the right. • Refit cover with screw b. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 34: Free Arm Cover

    • Remove screw b (T20 M4x6). • Remove cover 2. Assembly: • Position cover 2 and tighten screw b. • Position hook sensor cover 1 and retighten screw a. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 35: Free Arm Cover Plate

    • Take care to keep an even clearance between stitch plate and free arm cover plate when retightening screws a, b and c. • Refit bobbin door and free arm cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 36: Electronics And Sensors

    The contact surfaces of ribbon cables 4 and 5 must point downward! The contact surface of ribbon cable 6 must point upward! Attention! Take care not to jam any wires under the PCBA! BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 37: Stitch Length And Stitch Width Adjusting Knobs

    • Refit threader start sensor 4 (slightly raising earthing clip 5). • Fasten cover b with screw a. • Reconnect ribbon cable 3 and plugs 1 and 2 on PCBA- front-cover. • Refit front cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 38: Winder

    • Position winder motor 2 into metal holder. • Retighten 2 screws a. • Position winder driver 1 on motor spindle and press it on. • (Refit PCBA-winder). • Refit winder in front cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 39: Lcd Screen / Touch Screen

    • Carefully open up locking clip 4 and disconnect ribbon cable. • Remove 7 fillister head screws b (T10 3x12). • Remove LCD brackets 5 and cover 6. • Remove LCD 2 and touch screen 3. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 40 • Reconnect ribbon cable 4 and carefully close locking clip. Note: Point contacts of ribbon cable 4 downward. • Place rubber key pad (needle position) into cover, then refit PCBA-front-cover and front cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 41: Pcba-Ret / Rubber Key Pad / Ribbon Cable

    9. Note: Foam 4 is required for the correct threading process of regulator threader. • Refit front cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 42: Pcba-Base

    • Reconnect all plugs (note the colour coding, see next page). Note: There mustn't be any wires within the FHS light barrier area 3. Attention! Is the EEPROM is attached? BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 43 Embroidery module (only B830) P-36 black Battery P-40 black Hook sensor and UFU (lower thread sensor) P-100 black Wireless module *For connection details refer to chapter 2.18 Cable harness BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 44: Pcba-Cpu-Module

    The current state of the firmware must be checked after assembly of the new PCBA- CPU-module. If it is not the latest version, the firmware must be updated (via updating process). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 45: Eeprom (Electrically Erasable Programmable Read-Only Memory)

    • Slide LED free arm 2 out of cover. Assembly: • Slide LED free arm 2 back into cover. • Reconnect plug 1 to PCBA-front-cover. • Refit front cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 46: Pcba-Power Including Pcba Housing

    • Lift PCBA-power and slide out of retainers 8. Assembly: • Position PCBA-power into retainers 8. • Retighten 2 screws a. • Refit housing into frame. • Refit covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 47: Head Frame Led Sewing Light

    • Take care to correctly lay the cables, then lock cable duct with five locking clips 1. • Make sure the LED housing is behind the metal sheet like shown under 7. • Refit covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 48: Pcba-Hook-Sensor

    • Swing hook in and out by hand to check if the actuating lug 3 doesn't touch any of the 4 light barriers. • Refit free arm cover. Service Info Ref-#: 21434 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 49: Presser Foot Height Sensor

    • Place the presser foot height sensor exactly in the centre of the rear flag, taking care that the presser foot height sensor doesn't touch the magnet flag at the front. • Retighten screw a. • Reconnect plug 1. • Refit head frame cover. Version B BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 50: Pcba-Threader

    • Remove PCBA-console 1. • Disconnect plug 2. Assembly: • Reconnect plug 2 on PCBA-console. • Position PCBA-console 1 on positioning pin 3. • Retighten screw a. • Refit free arm cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 51: Sensor-Support-Abc (Presser Foot Sensor)

    • Disconnect plug 3. Assembly: • Lower dual feed 1. • Reconnect plug 3 on PCBA-dual-feed-sensor. • Position PCBA-dual-feed-sensor 2 and slightly press locking lug 6 until it engages. • Refit covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 52: Pcba-Accessory-Connection

    • Fully remove centring plate 1. • Disconnect plug 2. Assembly: • Reconnect plug 2 on PCBA-embroidery-module-connection. • Position centring plate onto positioning pins 3 and retighten 2 screws a. • Set machine upright. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 53: Lower Thread Indicator (Pcba Lower Thread Sensor) Cpl

    Note: Access to the screw b is achieved through the opening 7 of the gauge 5. • Test the signals in the service program 3k. • Refit bobbin door and free arm cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 54: Mechanical Components

    • Ensure that tension spring 4 and slide 3 are free of dust, threads or lint. • For lubrication of hook refer to lubrication diagram (Chapter BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 55: Hook

    • Use a polishing disk to remove burs or scratches on the hook body or slight damage to the hook tip. Replace hook if it is badly scratched or has damaged hook tip. • For lubrication of hook refer to lubrication diagram (Chapter BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 56: Thread Cutter

    • For cleaning, follow the procedure in the Setup menu. In difficult cases, remove the thread cutter. • Ensure that the thread cutter is free of dust, threads or lint. • The blade is a wear part and therefore available separately as a single part. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 57: Swing Bearing

    • Move actuating lug, washer (7.2x12x0.3), spherical bearing and swing bearing 2 out of base shaft to left. For disassembly of swing bearing refer to disassembly of base shaft (Item 4.3.21). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 58: Thread Tension And Regulator Threader - Entire Unit

    • Retighten screws a and b. • Reconnect plugs P3112 (upper thread tension stepping motor) and P43 (upper thread sensor) to PCBA-Base. P 43 • Adjust thread tension in Service Program Test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 59: Thread Tension Unit And Regulator Threader

    • Unhook springs g. • Move regulator threader down, guiding it over stop lug h. • Disengage regulator threader shaft from carrier plate. • Move lever base 14 off regulator threader. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 60 7 and trip dog 12 don't touch the light barriers. • Retighten screw a. Note: For cable laying see picture. 14 i BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 61 • Slide upper thread tension into carrier at point c and position meshing a and b. • Refit rail 1 and screw b. • Refit complete thread tension/regulator threader unit (item 4.3.5). • Adjust thread tension in Service Program Test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 62: Threader Head

    • Remove thread positioner 1. Assembly: • Position thread positioner 1, referring to reference point 3. • Retighten screw a including washer. Note: Lock thread positioner into position whilst tightening screw a. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 63: Main Switch / Power Connection

    • Position and engage main switch 3 and power connection 2 in base-plate cover. • Lay cable in area c. • Refit cover 1. • Refit main motor and PCBA-Power. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 64: Needle Bar Support

    • Slide needle bar support 12 to front, then to the left and out of thread take-up crank. • Remove seating 13 that sits behind needle bar support. Tech. Info Ref-#: 18729 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 65 • Refit clip 2 to secure the cables. • Refit cover 1 with screws a, b, and c including washer. • Adjust needle distribution (Chapter 5 item 5.4.2). • Refit covers. fitted BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 66: Needle Bar

    • Refit needle bar support 4.3.10). (item • Adjust: Needle distribution (Chapter 5 item 5.4.2). Threader height (Chapter 5 item 5.9.1 - 5.9.3). Basting device (Chapter 5 item 5.10). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 67: Needle Clamp

    • Use feeler gauge 8 to press spring 3 down, then slide needle clamp 5 over needle bar 7 in direction of arrow as indicated. • Retighten needle positioning pin b. • Refit needle clamp screw a. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 68: Threader Mechanism

    • Note: If a washer c is fitted under the return swivel cam 12, it is absolutely essential to refit it when reassembling the parts. • Remove screw d (T10 M3x8) including thread swing cam 13. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 69: Main Motor

    • Position motor back into motor bracket. • Retighten screw a including washer and serrated washer. • Refit drive belt and ventilation fan. • Adjust belt tension (Chapter 5, item 5.1.3). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 70: Dual Feed

    • Refit PCBA-Dual-feed 2 and PCBA-Accessory- connection 3. • Reconnect all plugs, lay cable in duct and close. • Refit right LED housing. • Adjust dual feed in X-direction (item 5.6.2). • Refit covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 71: Dual-Feed Stepping Motor

    3. • Set stop of drive gear pinion 3 against rubber buffer 4 and retighten the two setscrews c. • Remove feeler gauge 5. • Refit stepping motor. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 72: Gear Console

    • Pinning position of gear console (chapter 5, item 5.7.1). • Adjust position of thread cutter (chapter 5, item 5.7.2). • Calibrate console gear stepping motor in Service Program Test • Refit all covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 73: Disassembly And Assembly Of Gear Console

    • Refit link shaft 4 with bushing support and screw a. • Retighten setscrew b on the surface of crank 5 so that there is no play or clamping. • Refit needle bar support, thread tension unit and covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 74: Stitch Length Crank Shaft

    • Slide thrust link including slide block back into crank and rehook spring 2. • Adjust mechanical basic setting of main feed balance (item 5.6.3). • Refit covers, free arm cover, gear console and free-arm cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 75: Base Shaft

    Note: Mechanical ease of movement (smooth running). • Adjust synchronization, hook, needle drive and feed-dog movement (Chapter 5 items 5.1 to 5.4). • Refit all covers, casings, PCBA-Base and PCBA-Sensor. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 76: Stitch Length Stepping Motor

    • Place 0.3mm feeler gauge 9 under stop arm 7 of drive gear pinion 6. • Set stop 7 of drive gear pinion 6 against rubber buffer 8 and retighten setscrew b. • Remove feeler gauge 9. • Refit stepping motor. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 77: Sideways-Motion Stepping Motor

    1 until lever 5 sits opposite of guiding 7 without play or pressure. • Retighten screw a. • Main feed-dog: Adjust position within stitch plate in X direction (item 5.6.1). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 78: Presser Foot Pressure Stepping Motor

    • Reconnect motor plug 3. • Refit front head plate 2 and screws a and b. • Refit needle bar support. • Refit front cover, start Service Program and carry out test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 79: Stitch Width Stepping Motor

    8. • Retighten setscrew c. • Complete test 5e. • Remove pinning tool 6 and feeler gauge 7. • Adjust needle distribution (item 5.4.2). • Refit covers. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 80: Presser Foot Pressure - Toothed Rack Bearing

    • Position entire toothed rack bearing at rear head plate and retighten three screws a. • Slide pinion 5 over shaft. • Refit wheel 3 including washer and circlip 4. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 81: Base Plate

    • Refit covers. Disassembly and reassembly of base plate cover see film. Note: Machines without embroidery module connection do not have the connecting cables harness laid in the base plate. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 82: Chapter 5 - Settings

    For servicing, we recommend that you always use the accessories included with the machine or purchased specifically for it. These are the following: power cable, foot control, buttonhole foot, embroidery module and hoop, BSR foot and other accessories. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 83: Belt Tensions

    • Loosen screw b (T20), then use adjustment spanner # 733019.70.00 to turn the bearing until the specified tension value has been reached. • Retighten screw b. Note: Clockwise turning: Belt tension tightens. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 84: Drive Motor

    5.2.1 Position of head frame plate in Y direction Prove_position_of_head_frame_plate_Y_direction_rough Adjustment_position_of_head_frame_plate_Y_direction_rough Check: • 18mm rough setting (pictures 2.1), between frame and head plate. Disconnect the plug from the PCBA- Threader-Sensor, which is front of screw a. 18mm BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 85: Position Of Head Frame Plate/Stitch Plate In X Direction

    • Retighten screw b. Note: The presser foot height is read by the PCBA-dual-feed-sensor and does therefore not require mechanical adjustment as with previous models. Service Info Ref-#: 20855 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 86: Presser Foot Fixation

    (1/3 of clamping span). • Ensure that presser foot sole and stitch plate are parallel - align if required. • Use 3/8' markings on stitch plate for reference. • Retighten screw c. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 87: Needle Settings

    The adjusting screw g must only be used for the parallel setting of the needle bar and presser foot bar. It mustn't be used for the setting of the needle/hook distance! Setting of needle/hook distance (item 5.5.4). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 88: Needle Distribution

    • Select test 5a. • Needle bar support mustn't touch the zigzag stitch width limiter a (picture 4.3). Setting: • Loosen screw b (T10). • Position limiter a. • Retighten screw b. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 89: Hook, Needle Drive And Feed-Dog Movement Synchronization

    • Place belt wheel to the left against the shafts shoulder. • Retighten the two screws d. • Remove gauges. • Insert screw 2. of the feed-dog bush b and tighten. Service Info Ref-#: 20855 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 90: Bobbin Case Retainer

    • The play between the bobbin carrier e and the support plate d must be max. 0.15mm use feeler gauges to check. Setting: • Adjust screw c (T8) accordingly. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 91: Loop Lift

    • Slide bevel gear slightly to the left and into mesh with the gear of the hook (smoothly running without play or tightness). • Retighten screw f. • Remove pinning tool. • Tighten screw e. • Refit hook cover d with screw c. Service Info Ref-#: 20855 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 92: Needle/Hook Distance

    Note: We recommend to use a magnifying glass to ensure accurate setting. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 93: Needle Height

    Needle positioning pin – available sizes article number Ø in mm identification (colour) 032667.50.00 1.50 Black (phosphated) 032667.50.01 1.85 galvanised 032667.50.02 2.20 nickel-plated 032667.50.03 2.55 Black (phosphated) 032667.50.04 2.90 galvanised = Ø BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 94: Feed-Dog Settings

    • Turn hand wheel until feed-dog is in operating position. • Loosen screws e (T6). • Move feed-dog into the specified position. • Retighten screws e. • Remove pinning tool a. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 95: Dual Feed: X-Direction Positioning Against Main Feed-Dog

    • Remove pinning tool. Without sideways motion feeding • Loosen screw c (T10). • Use eccentric key 001361.70.00 in eccentric engagement bore d to adjust the lateral positioning. • Retighten screw c. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 96: Main Feeding Balance - Mechanical Basic Setting

    • The first tooth d of drive gear b must gear into the first gap of the toothed segment e. • Use spring pressure to reposition spherical bearing h to the left into the motor holding plate. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 97 • Retighten screw g to fix drive gear b at stop c. • Remove pinning tools. • Refit PCBA-base. To fine adjust, refer to Service Program, Test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 98: Dual Feed Balance - Basic Mechanical Setting

    • Retighten screw f to fix drive gear a at stop b. • Remove pinning tools. • To fine adjust, refer to Service Program, Test Service Info Ref-#: 20640 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 99: Main Feed-Dog Height 0.9-1.0Mm

    • Retighten screws e. • Remove angled torx and gauge. Note: Turning clockwise feed-dog level is lowered. Turning counterclockwise feed-dog level is lifted. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 100: Synchronisation Of Main Feed-Dog And Dual Feed

    • Remove Synchroplate and pinning tools. Note: For lateral positioning of dual feed unit see setting under (item 5.6.2) – Position of dual feed in X direction. Service Info Ref-#: 20855 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 101: Drive Console / Thread Cutter

    Note: The lever d will be positioned automatically by spring motion. • Retighten screw c. • Remove pinning tool. • Check console motor default position with the service program test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 102: Thread Cutter Basic Position

    • Loosen screw g (T10). • Apply eccentric key # 001361.70.00 at the eccentric engagement h to position the thread catcher bTighten screw g. Left control point 0,3 +/- 0,1 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 103: Synchronising Disc

    (BDC = 0°) Bottom Dead Centre. • Set synchronising disc against circlip. • Slightly retighten screw a. • Remove pinning tool. Service Info Ref-#: 20855 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 104: Automatic Threader

    • Use adjustment spanner 733019.70.00 to set distance of 3.5mm k between needle bar support and retainer clamp, then tighten screw e (T6). • Refit basting magnet housing. For setting refer to (item 5.10 Left side view 3,5mm BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 105: Needle Bar Clamp Adjustment

    • Loosen screw o (T6). • Move retainer plate up or down until clamp m engages in its highest position (spring slackens) under the lug. • Retighten screw o. Version B 0.7mm BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 106: Basting Device

    • For rechecking, twist needle bar to the left or to the right respectively and pull it down, ensuring that the clutch pin that gears into the needle bar engages smoothly. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 107: Checking The Timing Of Disengagement

    If functional test fails in one, some or all needle positions, recheck the setting of the cushioner position and the needle bar guiding and adjust as required. IMPORTANT: Versions A and B as described under chapters 5.9.3 5.10 have differing cushioner springs. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 108: Thread Regulator Spring

    • The rest position of the regulator spring is set via position of the bush d. • The basic position of the bush is the centre of the scale b. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 109: Thread Tension

    The machine must be switched on in order to use the Service Program. Refer to the safety instructions please. 5.12.1 Upper thread tension 6j Upper thread tension adjustment • Use a DMC 50 BLANC cotton thread (recommended by BERNINA, also refer to Service Info, Ref-# 18249, in Infogate) to thread the machine.

  • Page 110: Lower Thread Tension

    2. A new sticker can be inserted where the new marking can be applied (000475.50.01) (recommended) If this possibility is chosen, make sure the old sticker is removed completely before applying the new one. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 111: Winder

    PCBA-winder-sensor until value 100 is displayed in signal a. • Retighten screw e (T10). Test: • Attach winder gauge in B direction, value 0 should be displayed in signal b. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 112: Even Filling

    Clockwise Counterclock- wise Note: Not correct of unevenly filled lower thread bobbin can affect stitch quality and may have a negative influence on the monitoring of the lower thread. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 113: Position Of The Lower Thread Indicator (Pcba Lower Thread Sensor)

    • Tighten screws a and b. Note: Access to the screw b is achieved through the opening 7 of the gauge 5. • Check the signals in the service program test BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 114: Chapter 6 - Service Program

    Information 3 = Menu: Sensors 4 = Menu: Signals 5 = Menu: Motors 6 = Menu: Settings 7 = Menu: Embroidery Module (only BERNINA 11 = Menu: Tests 830) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 115 (letters, numbers and symbols depending on the display) 4) Selecting various Keyboards (a: Upper case letters & symbols, b: Lower case letters and numbers, c: Special characters 1 d: Special characters 2) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 116: Menu 1 - Service Information

    Technical Information data (1 – 10). Note: • Using the virtual keyboard, technical data can be entered in the page. • The entered data gives the technician information on already made improvements. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 117: Sewing / Embroidery Machine Operating Time Data

    Boot loader version • BSR Application version • Sensor Resolution X • Sensor Resolution Y Note: Information will only be shown if BSR foot is connected to the machine. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 118: Sewing / Embroidery Machine Servicing Data

    (date). Note: • When resetting the servicing stitches the virtual keyboard opens. • Repairing data must now be entered first. otherwise the stitch counter is not set to zero. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 119: Saving / Loading Customer Data

    • Load the Customer settings = Loading of customer data to the machine. Note: Connect BERNINA USB memory stick and select the required field. Remove the stick after saving of data has been confirmed. 1h Customer data: What to test: •...

  • Page 120: Dealer Data

    • Dealer data can now be entered. • Dealer data also can be read and entered in .txt-format from a BERNINA USB memory stick. Important: Please note the file must be called “dealerdata.txt”. See example below. • The data entered will automatically come up on-screen when the “Service Message” appears for the...

  • Page 121: Menu 2 - Display, Buttons And Clock

    The touch screen can now be calibrated as per instructions above. Repair notes: • Check touch screen connection cables. Check cables for deformation and or wear and tear. • Replace touch screen. • Replace PCBA-Front Cover. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 122: Lcd (Display)

    White blank screen to find dirt or stains. • To return to menu 2, click on Repair notes: • Clean LCD and touch screen. Attention! Do not use any abrasive or corrosive cleaning agents. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 123: Rgb (Red, Green And Blue) Screen

    To return to menu 2, click on Repair notes: If the time cannot be set: • Exchange the button type battery (type CR2032 commercially available). • Check cables for deformation and/or wear and tear. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 124: Led's And Brightness

    Check all connections. • Check cables for deformation and/or wear and tear. • Check connections P-38 and P-3111 on the PCBA-Base. • Exchange the LED’s. • Exchange the PCBA-Base. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 125: Menu 3 - Sensors (Geographically Located In The Machine)

    • Exchange the sensor if it doesn’t give out a reading. (item 4.2.19). • Furthermore, the support ABC sensor (presser foot recognition) might be affected Service Info Ref-#: 20639 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 126: Presser Foot Height Sensor

    To return to menu 3, click on Repair notes: • Check cables for deformation and/or wear and tear. • The sensor must be exchanged when the signal is not activating. Service Info Ref-#: 20639 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 127: Threader Preload Sensor

    Check PCBA-Threader for it’s correct mounting position it’s guided with a little rod on the needle bar support. • The PCBA Threader must be exchanged when the signal is not activating (item 4.2.16). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 128: Bobbin Winder / Fill Level

    • Touch the magnifying glass '-' symbol to close the submenu and to return to menu 3. • To return to menu 3, click on BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 129: Console

    Check cables for deformation and/or wear and tear. • Check if sensor area on the PCBA-Base is free from disturbing cables. • The PCBA Base must be exchanged when the signal is not activating (item 4.2.7). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 130: Hook Position Sensor

    Repeat the test using a new bobbin. • Position of PCBA-LTS = Lower thread sensor with gauge 733099.70.00 (item 5.14). • Check cables for deformation and/or wear and tear. • Replace the PCBA-LTS (item 4.2.22). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 131: Bobbin Door

    Return to previous page: What to test: • Touch the magnifying glass '-' icon to close the submenu and to return to menu 3. • To return to menu 3, touch BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 132: Menu 4 - Signals

    To return to menu 4, touch Repair notes: • Check adjusting knobs and PCBA-Front-cover for correct fit and fitting. • Replace the PCBA-Front-Cover (item 4.2.1). • Replace the PCBA-Base (item 4.2.7). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 133: Functioning Of Keyboard

    To return to menu 4, touch Repair notes: • Check cables for deformation and/or wear and tear. • Replace the PCBA-RET (item 4.2.6). • Replace PCBA-RET or PCBA-Front-Cover as necessary (item 4.2.6 or 4.2.1). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 134: Foot Control Unit (Normal)

    Check if the regulator spring is correctly mounted, so that the sensor flag is moving. • Check the adjustment of the regulator spring (item 5.11). • Replace PCBA Upper Thread Sensor (item 4.3.6). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 135: Bernina Stitch Regulator (Bsr) Foot

    Upper dead centre of needle bar is 180°. 0° • Loop lift setting is reached when signal 1 just goes 25° / 27.5° out (26.5°). 115° 217.5° 277.5° 360° (0°) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 136: Mechanical Fine-Adjustment Of Synchronisation Disc

    1 just goes out. Position: between 25° and 27.5°. • Tighten the securing screw a (not too hard). Attention: Do not tighten screw a of the synchronisation disc too hard. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 137: Speaker

    If the message “Test Failed” appears, then: • Check again using another cable. • Check the Client and Host connections on the sewing computer. • Replace the PCBA-Base (item 4.2.7). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 138: Basting Solenoid

    • A “Successful” message will appear. • To return to menu 4, touch Repair notes: • Check cables. • Replace the basting solenoid. • Replace the PCBA-Base (item 4.2.7). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 139: Presser Foot Recognition

    1C, 20C, 40C 5.5mm feet BERNINA 830/820 e.g.: Feet 2A, 5, 16, 18 Straight stitch feet BERNINA 830/820 Darning foot e.g.: Feet 13, 35, 38, 43, 53 5.5mm Dual feed foot BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 140 The feet categories can be viewed in the sewing mode: • Touch the presser foot indicator (top left). • The attached foot and the other feet of the same category appear in the field top left. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 141: Bsr Foot Interface

    To return to menu 4, touch Repair notes: • Check connection (jack) of BSR. • Check cables for deformation and/or wear and tear. • Replace the foot if necessary. • Replace PCBA-Accessory-Connection item 4.2.20 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 142: Menu 5 - Motors (Geographically Located In The Machine)

    Swap connections with the console stepping motor to check if the fault is with the motor or the PCBA-Base. Attention! Disconnect from the mains supply. Do not disconnect and reconnect when the machine is powered. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 143: Presser Foot Pressure Stepping Motor

    Do not disconnect and reconnect when the machine is powered. Do not connect the stepping motor to the stitch length or the dual feed stepping motor, as these two motors work with higher amperage! BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 144: Dual Feed Stepping Motor

    Check pinning positions of motors as per instructions and adjust if needed according the manual. • Check cables. • Exchange any stepping motor not working as per instructions on the respective page of the manual. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 145: Bobbin Winder Motor

    By swapping the connection with the dual feed stepping motor, it can be evaluated whether the motor or the PCBA-Base is faulty. Attention! Disconnect from the mains supply. Do not disconnect and reconnect when the machine is powered. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 146: Console Stepping Motor

    Swap connections with the console stepping motor to check if the fault is with the motor or the PCBA-Base. Attention! Disconnect from the mains supply. Do not disconnect and reconnect when the machine is powered. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 147: Menu 6 - Adjustments

    Note: Ensure to carry out the crucial adjustments and calibrations by following the points listed in menu11. Attention: To prevent the hook from blocking, do not run a threaded machine without fabric. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 148: Electronic Balance Calibration

    • The basic value is 0, the setting ranges from -4 to 4. • Touch OK to save the settings. Note re feed-direction adjustment: • Button = foreward, button = backward. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 149: Fine-Adjustment (Unidirectional Balance)

    What to adjust: • Turn balance cam a (T10) in such way that the number 9 is stitched properly (see picture below). Clock wise rotation Counter clock wise rotation BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 150 • Rotate the balance cam a in clock wise rotation = the leaf pattern pulls together. • Rotate the balance cam a in counter clock wise rotation = the leaf pattern pulls apart. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 151: Fine-Adjustment (Multi Directional Balance)

    • Turn balance cam a into the respective rotating direction to adjust the stitching of the pine tree. • Points 1 and 2 must be flush. End point 2 may however be 1mm above level. Clock wise Counter clock rotation wise rotation BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 152: Bdf Balance

    • With the button the left repeat will be longer and the right repeat will be shorter. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 153 What to adjust: • The length is adjusted using the • The basic value is 0, the setting ranges from -32 to 32. Note: • Button = shorter Button = longer. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 154: Buttonhole Calibration

    • Check cables for deformation and/or wear and tear. • Replace the presser foot sensor (Sensor support ABC, item 4.2.18). • Replace the PCBA-Base (item 4.2.7). Service Info Ref-#: 20639 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 155: Thread Cutter Process

    Move to intermediate position and cut thread. 50° Move to needle stop position up. 0° Test done • The information “Test done“ appears. • To return to menu 6, touch BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 156: Presser Foot Height And Pressure

    • After selection you will be asked “To reset tension press OK”. • After selecting OK ( ), again you will be asked “do you really want to reset?”. • To return to menu 6, touch BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 157: Resetting To Factory Settings (Reset All)

    • To return to menu 6, touch Note: It is essential to save the entire customer’s data on a BERNINA USB data stick before resetting to factory settings! See data saving in test 6h Calibrating thread tension automatic: What to test: •...

  • Page 158: Automatic Threading Process

    • Select the thread used for the calibration (DMC-White, Belfil, Mettler, Amann). • A 'Succesful' message appears (on succesful completion of the setting). • To return to menu 6, touch Tech. Info Ref-#: 12839 & 18249 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 159: Hook Swing Out Device

    Repair notes: • Clean and check the function of the SSU. • Check cables. • Exchange PCBA-RET (item 4.2.6). • Exchange PCBA-Front Cover (item 4.2.1). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 160: Standard Ssu Sewing Speed

    • Check the BSR foot sensor for dirt. Clean or replace if necessary. • Check BSR connector (PCBA Accessory Connection). • Replace if necessary (item 4.2.20). • Replace the foot if necessary. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 161: Console Motor Calibration

    Repair notes: • If the motor does not move, prove with test • Check cables. • Check pinning position of console item 5.7.1 (Picture 1.1): BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 162: Menu 7 - Embroidery

    Y-Belt tension o) X-Belt tension All detailed descriptions of the service program for the embroidery module can be found in the Service- and Maintenance Manual for the embroidery module. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 163: Menu 11 - Check-Out

    6. Service and lubrication stitches, Menu 1f After the last test is completed and the OK ( ) has been given, the check out program will return to the main service menu. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 164: Chapter 7 - Lubrication Plan

    = Klüber OY 100 (Art. # 007779.70.01) = Weissoel W118 (art. # ) # 001322.53.00) / Velocite 10 (art. # ) # 001 322 50 01) = Klübersynth UH1 14-1600 # 007779.72.02) Head frame BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 165 Threader mechanism / Needle drive BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 166 Toothed segment needle bar support Hook shaft / Swing bearing BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 167 Hook / Bobbin case Gear console Gear console (cut view) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 168 Upper thread tension / Spindle wheel Dual feed BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 169 Lower shaft / lifter- and stroke cam main feed Crank shaft main feed Crank shaft dual feed BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 170 Upper shaft lifter- and stroke cam dual feed Belt pulley Knee lifter mechanism BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 171 Feed dog fork BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 172: Chapter 8 - Firmware Update

    Update files can be downloaded from Infogate • The update files for BERNINA 830 and BERNINA 820 can be saved on the same BERNINA USB stick, but must be saved on the first level of the USB stick (root directory).
  • Page 173 USB stick and run the update Update failed application firmware, could not be process again. carried out. Try to update using the second method of entry. Exchange the PCBA Module BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 174: Update, Second Method Of Entry

    Keep the three buttons a, b and c pressed and switch the machine on. After the machine has been switched on, the update process will start as described in 8.1 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 175: Chapter 9 - Maintenance Guidelines

    The hours are counted consecutively 1 to 1, not permanently, but always after about 3 minutes (reduction of the “write” cycles). The hours can only be read out via the Service Program, and are not accessible by the customer BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 176: Calculation Table

    • Service entries must be made by the technician in the Service Program after a service or repair – otherwise, the service stitches are not reset to zero. • The same holds true for the cleaning-stitch reset. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 177: Wear-And-Tear-Parts Definition

    • Blade of automatic thread cutter. • Components of automatic threading process. • Pressure springs and tension springs. • Thread take-up crank / needle bar drive. • Needle bar and needle bar support. BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 178: Operating-Time Related Parts

    The X in the 8th position of the article number serves as a placeholder for the modification indicator (a number from 0-9). The counting of the modifications starts at 0 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 179: Maintenance Checklist

    • Update the machine to the latest firmware. • Read out the stitch and hour counter and enter in the Service Report. Customer data backup in BERNINA 820 / 830 Service Program 1g. Connect BERNINA USB memory stick and select required field.

  • Page 180: Functional Check

    • Needle bar support / needle bar Smooth running of the machine – • Swing bearing mechanical ease of movement • Bevel gears • Bobbin carrier / hook • Drive belt tensions BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 181: Maintenance Checklist Bernina 820 / 830

    Needle bar / needle bar support Thread take-up crank Spherical bearing Oiling / lubrication according to lubrication diagram in Service Hook drive shaft Manual Hook Shafts / axes Eccentric / cams BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 182 Service entry (date etc.) Sewing-off According to Sewing-Off Guideline SI 47-050 Cleaning Covers Does the machine run, are the accessories complete? Final check Check using service program, (Chapter6 item 6.11 (Check Out)) BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 183: Embroidery Module

    Check /calibrate tests in Service carried out! Program For X/Y test pattern assessment refer to Service and Maintenance Manual of Embroidery Module Sewing-off Cleaning Covers Final check Is the set of accessories complete? BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 184: Document Revision History

    1h Customer data (Reset Language) Menu 3 – Sensors 3a Dual feed sensor 3b Presser foot height sensor Menu 6 - Adjustments 6c Buttonhole calibration 6j Upper thread tension adjustment BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

  • Page 185: Appendix - Document List

    Chap 2.7 PCBA Hook Sensor 21434 Chap 4.2.14 The listed documents and information can be accessed online at http://infogate.bernina.com. They are also available on DVD: BERNINA 830/820 Service DVD (art.-#:033190.51.00). BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...
  • Page 186 BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland...

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