Janome MC9500 Service Manual Download Page 34

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MC 9500

Replacing DC Motor and Motor Belt Tension Adjustment

To remove:

1 Remove the belt cover. (See page 2)

2 Remove the motor belt.

3 Disconnect the Motor connector from the printed circuit

board A.

4 Remove Screw (A) .

5 Remove Screws (B) (2 pieces) and replace the

motor.

To attach:

6 Follow the above procedure in reverse.

Adjusting motor belt tension

1. Tighten Screws (B) (2 pieces) temporarily.

2. Adjust the Belt deflection to about 5.0 mm by

pressing the middle of the motor belt with your

finger with approximately 200 grams of pressure .

3. Tighten Screw securely.

Replacing DC Motor

Screws (A)

Screws (B)

Screw (C)

Deflection

Pressure 200 grams

www.promelectroavtomat.ru

Summary of Contents for MC9500

Page 1: ...SERVICE MANUAL MC9500 www promelectroavtomat ru ...

Page 2: ...on 16 Adjusting Tension Release Mechanism 17 Changing Thread Tension Unit 18 Adjusting Stretch Stitch Balance 19 Replacing Threader Plate and Adjustment 20 Adjusting Height of Embroidery Foot P 21 ADJUSTMENT FOR ELECTRICAL COMPONENTS Connector Connection Diagram 22 Replacing Printed Circuit Board A 23 Replacing Touch Panel LCD 24 Replacing Printed Circuit Board F 25 TTP Adjusting Mode 26 Adjusting...

Page 3: ...Top cover from rear side to toward you and tighten Screws B C to attach the Top cover Changing External Parts 1 Face Cover Top Cover To remove 1 Remove the Cap and Screw A and remove the Face Cover Cap Screw A Face cover To attach 2 Attach the Face Cover and tighten Screw A then attach the Cap Replacing the face cover 3 2 1 1 2 3 1 2 3 3 2 1 1 2 3 1 2 3 1 2 3 1 Top cover Screw B Screw C 1 2 3 1 ww...

Page 4: ...p and remove Screw B 3 Lay the machine down on its back and remove Screws C and D then remove the Belt cover Screw A Cap Screw B Screw C Screw D Belt cover To attach 4 Match the Belt cover position with the front cover 5 Attach the Belt Cover with Screws A D 5 Attach the Cap 1 2 6 4 5 2 5 1 1 2 3 6 4 5 6 3 1 2 3 4 5 6 www promelectroavtomat ru ...

Page 5: ...xternal Parts 3 Base Cover Replacing the base cover To remove 1 Remove Screws 4 pieces to remove the base cover Screw Base cover To attach 2 Follow the above procedure in reverse 1 2 1 2 1 2 1 1 1 www promelectroavtomat ru ...

Page 6: ...nnectors Screws A Base lid 1 Screws B Bed cover Drop feed lever Connectors To attach 5 Follow the above procedure in reverse Set the Drop feed lever as shown place the mated connectors in the bed cover Replacing the base lid 2 To remove 1 Remove Screws 4 pieces and remove the Base lid 2 Screw Base lid 2 To attach 2 Follow the above procedure in reverse 1 2 3 4 1 2 1 2 2 1 2 3 4 6 5 1 2 3 4 5 6 1 1...

Page 7: ...e Accessory To attach 4 Connect the X Y Motor connectors to the printed circuit board A 5 Insert the X Y Motor cords between the printed circuit board A and Arm Make sure that the cords should not be caught between the arm and base unit when attaching it then tighten Screw 4 pieces temporarily 6 Attach the Extension Accessory table 7 Tighten Screws A while aligning the extension table base unit an...

Page 8: ...e Screw B 4 Loosen Screw C D 5 Disconnect the each connector and remove the front cover Note Unlock the Hooks before removing the front cover Screw A Arm thread guide Lower Screw B Screw C Screw D Hooks 2 spots To attach 6 Follow the above procedure in reverse Note See page 22 Diagram for Connectors Connection Front cover 1 2 2 1 4 3 6 5 3 4 5 1 2 3 4 5 6 www promelectroavtomat ru ...

Page 9: ...move the top cover and belt cover 2 Loosen Screws A B C D and remove the Rear cover Screw A Screw B Screw C Screw D Rear cover To attach 3 Follow the above procedure in reverse Rear cover To remove 2 1 3 5 4 2 1 4 3 5 2 1 4 3 5 www promelectroavtomat ru ...

Page 10: ...dle Needle plate hole 0 2 mm or more 1 Remove the top cover and slect the pattern No 1 Straight stitch Lower the needle to its lowest position by turning the handwheel toward you 2 Loosen the Screw Move the Zigzag rod left or right to set the needle in the center of the Hole of the needle plate then tighten Screw 3 Select the pattern No 6 Zigzag Set the zigzag width to maximum 7 0 4 Turn the handw...

Page 11: ...er foot is lowered the edge of the foot and the feed dog window on the needle plate should be parallel 1 Remove the face cover 2 Raise the presser foot loosen Screw to adjust the presser foot position and presser foot height then tighten screw 3 Attach the face cover 2 1 3 4 5 2 1 3 4 5 Screw Presser foot 6 0 mm Feed dog window Should be parallel 1 1 www promelectroavtomat ru ...

Page 12: ... condition if the convex of the feed lifting cam is in the lowest position loosen screws of the lower shaft gear G If not loosen screws 2 pieces of the lower shaft timing gear 7 Raise the needle bar further 3 4 mm from the lowest position 8 Turn the lower shaft gear until the tip of rotary hook meets with the right side of the needle Tighten the screws of the lower shaft gear or the lower shaft ti...

Page 13: ...r switch OFF 4 Turn the handwheel to raise the needle bar from the lowest position until the tip of the rotary hook meets with the right side of the needle 5 Remove the face cover and loosen Screw as shown 6 Move the Needle bar up or down to adjust the needle bar height 7 Tighten the Screw Be sure that the groove on the needle bar facing right in the front 8 Attach the face cover 9 Reattach the Bo...

Page 14: ...rd you and adjust the clearance between the Test pin and the Tip of rotary hook to 0 10 to 0 05 mm by moving the Rotary hook set plate up or down 5 Tighten the screws A B C firmly 6 Check the rotary hook driver gear and the lower shaft gear backlash If gears mesh or engage tightly or loosely check Adjusting Backlash between Hook Drive and Lower Shaft Gear See page 13 7 Reattach the bed cover base ...

Page 15: ... Jog the hook race with fingers to check the rotary play If the play is larger than 0 8 mm or the gears do not turn smoothly adjust the backlash as follows Adjustment procedure 1 Turn the Lower shaft bushing Eccentric in th direction of A when the play at rotary hook tip is too large 2 Turn the Lower shaft bushing Eccentric in the direction of B when the play at rotary hook tip is too small 3 Tigh...

Page 16: ...feed dog position parallel to needle plate Turn the handwheel toward you until the feed dog comes to its highest position the feed dog and the needle plate should be parallel If not follow the instructions below 8 Prepare the hexagonal socket screw and insert it to the Threaded hole C and screw it until the tip of threaded screw reaches the bottom 9 Loosen Screw D 10 Turn the hexagonal socket scre...

Page 17: ...r hand until the needle starts to swing A If the needle stops higher than 8 7 mm loosen Screw and turn the Upper shaft shield plate in the direction of A B If the needle stops lower than 8 3 mm loosen Screw and turn the Upper shaft shield plate in the direction of B 3 Position the right face of the Upper shaft shield plate in the center of slit of the Upper shaft sensor and tighten Screw Screw Upp...

Page 18: ...pproximately 110 mm sec in the direction of arrow 1 Set the Thread tension dial at AUTO 2 Lower the presser foot 3 Remove the face cover and adjust the thread tension A If the thread tension is less than 75 g turn the screw in the direction of B If the thread tension is more than 90 g turn the screw in the direction of Pulling direction pulling speed 110 mm sec 1 1 www promelectroavtomat ru ...

Page 19: ...he Disc holder while pushing the tension release plate 2 in the direction of arrow then tighten Screw A 4 Set the thread tension dial at 9 Raise the presser foot lifter to check the tension release mechanism 5 Set the thread tension dial at 0 Lower the presser foot lifter Make sure the tension disc should not move when the tension release plate 2 is moved within its play 6 Reattach the top cover S...

Page 20: ...over See page 6 2 Remove Screws A B and thread tension unit To attach 3 Follow the above procedure in reverse Note After changing the thread tension check the tension release mechanism and solenoid To remove 1 2 1 2 Screw A Screw B 1 2 www promelectroavtomat ru ...

Page 21: ... the Start Stop button Keep pressing button until the LCD shows the Adjusting window 2 Press 8 Adjust on the touch panel 3 Set the feed balancing dial at the standard setting mark 4 Check the sewing results The standard length of the five pieces of figure 8 is 33 39 mm 5 Remove the base lid 3 6 If the length of the stitch pattern is extended more than the standard length turn the Adjusting screw i...

Page 22: ...holder up until it snaps in place Threader plate holder Pin Hook Threader knob Adjustment procedure 1 If the threader hook thrusts or hits against either left or right edge of the needle eye Loosen Screw A and adjust the position of the threader plate 2 See Fig 2 2 If the threader hook thrusts against either top or bottom edge of the needle eye or misses the needle eye Remove the face cover and lo...

Page 23: ... lower the presser bar lifter 3 Insert the 1 2 mm Thickness gauge between the Embroidery Foot P and the needle plate 4 While pressing the Pressure bar actuator down against the upper shaft cam loosen the Screw A and push it down to the direction of arrow then tighten Screw A again 5 Reattach the rear cover Set the Pressure dial at 3 Pressure dial Thickness gauge Embroidery foot P Pressure bar actu...

Page 24: ...hite DC Motor White Switching regulator White Foot controller White Upper shaft sensor White U D Feed dog Black Bobbin winder sensor Blue 13 14 15 16 17 18 19 20 21 22 23 TTP LCD Printed circuit board F Black Buttonhole sensor Black Needle thread detection sensor Red Embroidery foot P sensor White Presser foot lifter sensor Red Slide volume White Remaining bobbin thread sensor Blue Zigzag width mo...

Page 25: ...de volume connector 5 1 2 3 4 6 7 To remove 1 Remove the front cover See page 6 2 Pull out the printed circuit board F TTP LCD Inverter and Slide volume connectors 3 Remove Screws 6 pieces and remove the printed circuit board A with the Card guide To remove 4 Follow the above procedure in reverse 5 1 2 3 4 6 7 1 1 1 4 2 3 6 7 1 5 www promelectroavtomat ru ...

Page 26: ... C press the D and E of the LCD fixing plate bottom to the Touch panel and tighten screws 6 Place the F and G of LCD Fixing plate Top to the LCD then tighten the screws 7 Connect the connectors into the machine and attach the front cover Fixing plate Top Screw Fixing plate Bottom Printed circuit board F connector LCD Harness Inverter connector Touch panel connector Touch panel Rear side 4 5 6 7 2 ...

Page 27: ...everse Pass the cords under the ribs as shown Printed circuit bord connector Screws 2 pieces Printed circuit board F Ribs 2 3 Slide volume To remove 1 Remove the front cover See page 6 2 Pull out the Slide volume connector from the printed circuit board A 3 Remove the CS ring 2 pieces and remove the slide volume Slide volume connector CS ring To attach 4 Follow the above procedure in reverse Pass ...

Page 28: ... Needle Up Down button turn the power switch ON Keep pressing the Needle Up Down button until the PRESS MARK and mark appears Needle Up Down button Power switch Touch panel 2 Press mark with the tip of the additional spool pin Press to in order 3 When you press the fifth ADJUSTMENT END will appear on the touch panel 4 Turn the power switch OFF 5 Turn the power switch ON and check the Touch panel a...

Page 29: ... 5 1 3 5 4 5 To check tension release function a Lower the presser bar Turn the power switch ON while pressing the Start Stop button Touch panel indicates the Self Check function keys as shown b Press Solenoid key on the touch panel and it will indicate Solenoid Key c Press the Solenoid Key several times to check if the Tension disc and Tension disc holder open when the solenoid is activated d Pre...

Page 30: ...ess BH Sensor key on the touch panel 3 Loosen screw A and move the BH lever guide so that the screen shows L when the BH lever is lowered Then tighten Screw A 4 Attach the BH Foot R and lower the BH lever 5 Insert the 1 6 mm thickness gauge between the slider and the spring holder to set the space at 1 6 mm 6 Loosen Screw until the touch panel shows H 7 Screw in the screw until the screen indicati...

Page 31: ...he foot sensor shield plate to the left most until it touches the sensor lightly L will appear on the touch panel 7 Remove the standard foot and lower the presser bar H will appear on the touch panel To check 8 Set the pressure dial at 2 9 Change the foot to Embroidery foot P and slowly lower the presser foot lifter 10 Turn the handwheel to raise the needle bar to its highest position 11 When slig...

Page 32: ...ey on the touch panel 3 Remove the top cover 4 Loosen Screw A and adjust the Switch fixing plate and make sure the screen shows H when the presser foot is raised and screen shows L when the presser foot is lowered then tighten the Screw A After turning the power switch ON in this condition the Tension release plate should be pushed by the Tension release lever 5 Press OK key and turn the power swi...

Page 33: ...y button several times and check if the same number appears each time Note Wind a bobbin to 9 2 mm in diameter use calipers to measure and use it as a substitute for gauge bobbin 4 Press MEM1 button The data for step 3 is registered in MEM 1 5 Insert the gauge bobbin 10 3 mm in diameter in the bobbin holder and press the Key button The numbers will appear under the Key button Press the Key button ...

Page 34: ...and replace the motor To attach 6 Follow the above procedure in reverse Adjusting motor belt tension 1 Tighten Screws B 2 pieces temporarily 2 Adjust the Belt deflection to about 5 0 mm by pressing the middle of the motor belt with your finger with approximately 200 grams of pressure 3 Tighten Screw securely Replacing DC Motor 1 2 4 Screws A Screws B Screw C Deflection Pressure 200 grams 2 5 1 2 3...

Page 35: ...urn the power switch ON and return the carriage to the home position 4 Remove Screws 3 pieces and remove the carriage plate To attach 5 Attach the carriage plate unit and tighten Screws temporarily 6 Adjust the carriage plate position so that its top surface is parallel and the same level with the Bed surface Tighten the Screws securely 7 Attach the Cover cap Cover cap Hook Screws Bed surface 1 3 ...

Page 36: ...ge cover cap Unlock the Hook from the inside 3 Turn the power switch ON and return the carriage to the home position 4 Loosen the Drop plate screws 2 pieces 5 Adjust the Drop plate moving it to the left or right if the feed dog does not drop when selecting the Embroidery Mode or does not rise the drop plate does not set in to the recess when selecting the Utility Stitches 6 Tighten the Drop plate ...

Page 37: ...rn the power switch ON again to check if the Distance Y is 2 5 mm Tighten Screw A 4 Loosen screw B and move the X shield plate to adjust the carriage position X 1 and X 2 Turn the power switch ON again to check if the distance X 1 is 69 mm and X 2 is 2 5 mm 5 Tighten Screw 6 Attach the base 1 2 4 1 Screw A Y 2 5 mm Y sensor attaching plate Screw B X 1 69 mm X 2 2 5 mm between the edge of carriage ...

Page 38: ...ensor fixing plate to adjust If the needle drop position is slightly out of position in the X direction loosen the Screw B through the hole of the Sheet cover fixing plate hole and move the X shield plate to adjust 7 Turn the power switch ON Select the Embroidery Mode and select the pattern No 1 on the touch panel then check if the needle goes into the center of the Hole in the template 8 Return t...

Page 39: ...read sensor insert a piece of paper into the channel as shown 8 Run the machine and loosen Screws B 2 pieces While the carriage is moving in the direction of arrows adjust the X Motor position where the lowest noise is obtained and tighten Screws B firmly 9 Return the carriage to the stored position and turn the power switch OFF 10 Pull the X and Y motor connectors out from the printed circuit boa...

Page 40: ... Pull out the Machine socket unit connector 4 Remove Screw C and remove the Idler 5 Remove Screws D 2 pieces and Switching power supply to the handwheel side To attach 6 Follow the above procedure in reverse Screw A Screw B Machine socket unit connector primary circuit Screw C Idler Screw D Switching power supply 1 2 3 4 6 7 1 2 3 4 5 6 7 5 1 2 3 4 5 6 7 www promelectroavtomat ru ...

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