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Grace Company Q'nique 21 Service Manual

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Neville Pearson
May 21, 2025

The long drive belt is vibrating continuously. I have the Manual on line but there is no substitute for hands on by a specialist/ Is there a secret to thread the belt through the drive pulley's??/

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Summary of Contents for Grace Company Q'nique 21

  • Page 1 Service Manual...

  • Page 2: Table Of Contents

    Table of Contents Q’nique 21: Service Manual Bobbin Winder ..........................1 Display Board Box ........................2 Needle Bar Height ........................3 Hopping Foot Height ........................4 Hook Holder ..........................5 Needle Plate ..........................6 Handle Bars ..........................6 Timing ............................7 Thread Tensioner ........................

  • Page 3: Bobbin Winder

    Bobbin Winder Q’nique 21: Service Manual Tools Needed: 9mm Crescent Wrench 1.5mm Allen Wrench Screw Tension Disc Post 1. Adjust the Bobbin Winder Cam to be centered to the Bobbin without touching it by loosening the Set Screw with the 1.5 mm Allen Wrench, adjusting the Cam, and retightening the Set Screw. If thread winds mostly on the top of the bobbin, the Tension Discs Post will need to be lowered by twisting the Tension Disc Post clockwise and retightening the hex nut.

  • Page 4: Display Board Box

    Display Board Box Q’nique 21: Service Manual Tools Needed: 3mm Allen Wrench Screen Assembly M5 x 16mm SBHCS Display Board Box Screen Assembly 1. Press the Tab inward and pull the Screen 2. Remove the (2) M5 x 16mm SBHCS holding the Assembly up and unplug the LCD Cable.

  • Page 5: Needle Bar Height

    Needle Bar Height Q’nique 21: Service Manual Tools Needed: Adjust Needle Flat Head Screwdriver Bar height with a Needle Bar Height Spacer Flat Head Screw Driver here. *Note: Display Board Box may have to be removed to access. 1. Rotate the hand wheel in the back of the machine until the Needle Bar is in the lowest position.

  • Page 6: Hopping Foot Height

    Hopping Foot Height Q’nique 21: Service Manual Tools Needed: 3mm Allen Wrench Press Bar M3 Socket Head Screw Hopping Foot 1. Attach your Hopping Foot to the press bar using a M3 Socket Head Screw (don’t tighten during this step) in either of the configurations shown.

  • Page 7: Hook Holder

    Hook Holder Q’nique 21: Service Manual Tools Needed: 3mm Allen Wrench Needle Flat Head Screwdriver Plate 1. Remove the Needle Plate. Hook Assembly Positioning Guide 2. Rotate your Hook Assembly so that the positioning guide is at the highest point during rotation.

  • Page 8: Needle Plate

    Needle Plate Q’nique 21: Service Manual Tools Needed: Flat Head Screwdriver Needle Plate Screws (4) Needle in Lowest Needle Position Plate 1. Attach your Needle Plate using (4) Needle Plate 2. Rotate Hand Wheel until the Needle is in the Screws, don’t tighten the screws during this lowest position.

  • Page 9: Timing

    Timing Q’nique 21: Service Manual Tools Needed: Timing Hole 2mm Allen Wrench Timing Spacer Flat Head Screwdriver A timing tutorial is available on our website 1. Loosen all 3 Hook Assembly Set Screws with a http://www.qniquequilter.com/ 2mm Allen Wrench by inserting the wrench into videos/tutorials/ the Timing Hole when each Set Screw aligns with the hole.
  • Page 10 Needle 0.02-0.75mm Gap Scarf Hook Screws Hook Assembly 5. The Needle should be as close as possible to the Hook Assembly without touching, roughly between 0.02mm and 0.075mm. Tighten the Set Screw which is currently aligned with the Timing Hole on the left side of the machine.

  • Page 11: Thread Tensioner

    Thread Tensioner Q’nique 21: Service Manual Tools Needed: 2.5mm Allen Wrench M5 x 8mm Set Screw Thread Tension Assembly 1. Loosen the M5 X 8mm Set Screw to remove the Thread Tension Assembly. M5 x 8mm Set Screw Check Spring Thread Tension Assembly...

  • Page 12: Adjusting Thread Tensioner

    Adjusting Thread Tensioner Q’nique 21: Service Manual Tools Needed: Flat Head Screwdriver Check Tension Spring Knob 1. Loosen the Tension Assembly by turning the Tension Knob counterclockwise until the Tension Knob is flush with the end of the Check Spring Screw Check Spring Check...

  • Page 13: Extrusions Cover

    Extrusions Cover Q’nique 21: Service Manual Tools Needed: 4mm Allen Wrench M6 x 10mm SBHCS 1. Remove the (2) bolts on the side of the Extrusion Cover. Extrusions Cover 2. Remove Cover. 3. Repeat for Left side if needed.

  • Page 14: Front Cover

    Front Cover Q’nique 21: Service Manual Tools Needed: M6 x 10mm M8 x 12mm SBHCS SHSS 4mm Allen Wrench 1. Remove Extrusions Cover and Handles, then remove (1) M6 x 10mm SBHCS and (1) M8 x 12mm SHSS attaching the Machine Body to the extrusions.

  • Page 15: Needle Rod Holders

    Needle Rod Holders Q’nique 21: Service Manual Tools Needed: 2.5mm Allen Wrench 3mm Allen Wrench 10mm Open End Wrench Slide Plate M5 x 10mm SBHCS (2) Press Bar Stop Collar Spring Retaining Ring Slide Block Press Bar Link M4 x 10mm SBHCS Press Bar Slide...

  • Page 16: Upper Shaft

    Upper Shaft Q’nique 21: Service Manual Tools Needed: 2.5mm Allen Wrench 3mm Allen Wrench M4 x 8mm Thread Take SBHCS (4) Up Lever Clamp Right Thread Take Up Lever Main Shaft M5 x 10mm Clamp Bushing SBHCS (6) Clamp (3) 1.

  • Page 17: Pulley And Optical Encoding Wheel

    Pulley and Optical Q’nique 21: Service Manual Encoding Wheel Tools Needed: 4mm Allen Wrench Centered 3mm Allen Wrench 2mm Allen Wrench Optical Encoding Board M6 x 15mm SBHCS Speed Sensor Cable 1. Install the Optical Encoding Board using (2) M6 1.

  • Page 18: Lower Shaft

    Lower Shaft Q’nique 21: Service Manual Tools Needed: 10mm Open End Wrench Flat Head Screw Driver 3mm Allen Wrench Pulley Axle Pulley 1. Remove Pulley Axle, Pulley, and M6 Nut M5 x 10mm SBHCS (8) Lower Shaft Bushing Lower Shaft Clamp Bushing Clamp Front (2)

  • Page 19: Bushing Block

    Bushing Block Q’nique 21: Service Manual Tools Needed: 10mm Open End Wrench Flat Head Screwdriver 3mm Allen Wrench 2.5mm Allen Wrench M6 x 16mm M6 x SBHCS (3) 10mm Set Screw (2) Bushing Block Adjustment Plate M4 x 8mm SBHCS (2) Bushing Block 1.

  • Page 20: Bushing Block

    M4 x 8mm M4 x 8mm SBHCS (2) SBHCS (2) Press Bar Guide Bushing Block Adjustment Plate 5. Attach the Press Bar Guide using (2) M4 x 8mm 6. Slide the Bushing Block Adjustment Plate so SBHCS. that the needle is in line with the hole on the Needle Plate then tighten the M4 x 8mm SBHCS to lock it in place.

  • Page 21: Main Board

    Main Board Q’nique 21: Service Manual Tools Needed: 8mm Open End Wrench 2.5mm Allen Wrench Back Handle Cable or Front Handle Cable Back Handle Cable or Front Handle Cable Motor Driver Signal Cable Speed Sensor Cable 24V Power Supply LED Cable (2 wires together) Bobbin Winder Cable (2 separate wires) 1.

  • Page 22: Power Supply

    Power Supply Q’nique 21: Service Manual Tools Needed: 4 mm Allen Wrench Phillips Head Screw Driver M6 x 10 mm SBHCS (1) M6 x 10 mm SBHCS (4) Bottom Cover Plastic Cover 1. Use the 4 mm Allen Wrench to remove the 2.

  • Page 23: Motor Driver Board

    Motor Driver Board Q’nique 21: Service Manual Motor Driver Board Pulley Pin Motor Cable M6 x 16mm (Thicker Cable) SBHCS Motor Driver Signal Cable Motor Driver 24V Power Cable (Thinner Cable) To Power Supply 1. *Note: Do not confuse the Motor Cable and the Motor Driver Power Cable. If plugged in opposite it will burn out the board.

  • Page 24: Idler Pulley Tension

    Idler Pulley Tension Q’nique 21: Service Manual Tools Needed: 4mm Allen Wrench Force Gauge Idler Pulley Screw (2) Put force on Idler Pulley Tension Adjust Assembly here 1. Use force gauge to set belt tension between 5-5.5kg or press so Belt slack is minimal, then tighten pulley screws.

  • Page 25: Mcu Board Update

    Sewing Machine MCU Update Instructions 1. Save the software file into a new folder. 2. Extract the zip file by right clicking on the file and extract contents into the new folder. 3. Open up the folder named MCU and then the 4.
  • Page 26 7. Choose SMD Bootloader and click continue. 8. Click OK. Installation of Bootloader is now complete. 9 Turn off sewing machine power. 11. Remove MCU Board fromm MCU Pod by 10. Remove MCU Pod by removing (4) M5 X removing (4) M3.5 Screws. 30mm SBHCS.
  • Page 27 13. Plug in USB cable side B into the MCU board 12. Unplug the Motor Driver Signal Cable from USB Connector Port using USB A to B cable the Motor Driver Board. (printer style cable). 14. Turn on sewing machine. Note: Do not turn off power or unplug cable during update process.

  • Page 28: Motor Driver Board

    Motor Driver Board Before installing Version 3 Motor Driver Board update the main board software. Tools Needed: Motor Driver Board • 4mm Allen Wrench Assembly • Flat Head Screwdriver Pulley Base Thread M6 X 20mm SBHCS Motor Driver Board Plugs *Note: Do not confuse the Motor Driver Cable and the Motor Power Cable.

  • Page 29: Self Calibration Instructions

    For any questions call a Grace Company Tech at 1-800-264-0644. 1: If your machine hasn’t been used for at least 10...

  • Page 30: Window Offset Adjustment Instructions

    Window Offset Adjustment Instructions *NOTE: Only adjust the window if a Grace Company Tech tells you to when your needle stop position is incorrect. Do not adjust the window offset for a one time needle stop position bug. Do not adjust your window offset to fix your needle stop position in manual mode, precise mode or cruise mode.

  • Page 31: Encoder Test

    Encoder Test 1: From the Main Menu on your sewing machine display choose Tools>Diagnostics>Encoder Test. 2: Move the sewing machine side to side and check one of the indicators turns green. 3: Move the sewing machine front to back and check that the other indicator turns green.

  • Page 32: Sensor Test

    Sensor Test 1: From the Main Menu on your sewing machine display choose Tools>Diagnostics>Sensor Test. 2: Press the main button on the left handle to move the needle up and down. 3: The needle indicator should turn green when the needle is up and should turn red when its down.
  • Page 33 The Grace Company 2225 South 3200 West Salt Lake City, UT 84119 Phone: 1-800-264-0644 Fax: 801-908-8888 www.graceframe.com...

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