Janome MC 300E -, Service Manual & Parts List

Page 1: ...SERVICE MANUAL PARTS LIST MC300E...

Page 2: ...ower Shaft Gear 12 Adjusting Upper Shaft Shield Plate Position 13 Adjusting Nedle Thread Tension 14 Adjusting Tension Release Mechanism 15 Changing Thread Tension Unit 16 Replacing Threader Plate and...

Page 3: ...l Parts 1 Face Cover To remove 1 Remove the Cap and Screw and remove the Face Cover Cap Screw Face cover To attach 2 Attach the Face Cover and tighten Screw then attach the Cap Replacing the face cove...

Page 4: ...move the Cap and Screw A 2 Loosen Screw B 3 Lay the machine down on its back and remove Screws C and D then remove the Belt cover Cap Screw A Screw B Screw C Screw D Belt cover To attach 4 Attach the...

Page 5: ...Changing External 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 1 2...

Page 6: ...ve the Base lid 1 3 Remove Screws B 2 pcs and remove the Bed cover Screw A Base lid 1 Screw B Bed cover To attach 4 Follow the above procedure in reverse Replacing the base lid 2 To remove 1 Remove Sc...

Page 7: ...ension table 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 cuircuit board A and Arm Make sure that the cords sh...

Page 8: ...Screws C D 5 Disconnect 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 4 spots To attach 6...

Page 9: ...elt cover 2 Loosen Screws A and B 3 Raise the handle and remove Screw C and Cap then remove Screw D Remove the Rear cover Screw A Screw B Screw C Cap Screw D Rear cover To attach 3 Follow the above pr...

Page 10: ...cover and loosen Screw move the Needle bar supporter to the right or left until the needle comes to the center of the Needle plate hole 3 Tighten the Screw 4 Attach the face cover Screw Needle bar sup...

Page 11: ...ts with the right side of the Needle Tighten Screws 2 pieces of the lower shaft gear 6 Attach the Bobbin holder Needle plate and presser foot 7 Attach the base lid 2 base lid 1 base cover bed cover an...

Page 12: ...at the groove on the needle bar is facing right in the front 7 Attach the Bobbin holder Needle plate and presser foot 8 Attach the face cover Needle plate Bobbin holder Screw Needle bar Groove Needle...

Page 13: ...e 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 4 Tighten the Screws A B C firmly 5 Check the rotary hook driver gear and...

Page 14: ...ith 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 Remove the bed cover See page 4 and loose...

Page 15: ...than 14 2 mm loosen Screw and turn the Upper shaft shield plate in the direction of B 4 Place the right side of the Upper shaft shield plate in the center of the slit of the Upper shaft sensor and tig...

Page 16: ...ly 110 mm sec in the direction of arrow 1 Set the Thread tension dial at 3 2 Lower the presser foot 3 Remove the front cover unit and adjust the thread tension A If the thread tension is more than 59...

Page 17: ...oximately 0 3 0 5 mm and tighten the Screw A 4 Raise the presser foot lifter turn the thread tension dial from 9 to 0 make sure the tension disc should open 1 0 mm 5 Reattach the front cover unit Scre...

Page 18: ...cover unit See page 6 2 Remove Screws A B and remove the thread tension unit To attach 3 Follow the above procedure in reverse Note After the replacement adjust Thread Tension Release Machanism and So...

Page 19: ...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 Sc...

Page 20: ...eedle bar and lower the presser foot 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 sha...

Page 21: ...3 14 10 6 7 8 9 Touch panel LCD Harness Printed circuit board F Black Bobbin winder sensor Blue Upper shaft sensor Black Thread detection sensor Red Presser foot lifter sensor Red 12 8 9 10 11 13 14 S...

Page 22: ...Pull out the connectors of printed circuit board F LCD Harness Inverter and Touch panel 3 Remove Screws 5 pieces and the Printed circuit board A with the Card guide To attach 4 Follow the above proce...

Page 23: ...nd press it against the Ribs A B C Fix the Touch panel with the Fixing plate bottom while press it against the Touch panel and tighten screws 5 Place the Fixing plate top and secure it with Screws whi...

Page 24: ...emove the front cover See page 6 2 Pull out the connectors from the printed circuit board A 3 Remove Screws 2 pieces and remove the Printed circuit board F To attach 4 Follow the above procedure in re...

Page 25: ...cates the Self Check function keys as shown c Press the Solenoid key on the touch panel and it will indicate Solenoid Key d Press the Solenoid Key several times to check if the Tension disc and Tensio...

Page 26: ...eplace the motor To attach 5 Follow the above procedure in reverse Adjusting motor belt tension 1 Tighten Screws 2 pieces temporarily 2 Adjust the Belt deflection to about 5 0 mm while pressing the mi...

Page 27: ...ON to 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 p...

Page 28: ...power switch ON again to check if the Distance Y is adjusted to 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...

Page 29: ...osen the screw A and move the Y sensor fixing plate to adjust If the needle drop position is slightly out of position in the X direction loosen Screw B through the hole of the Sheet cover fixing plate...

Page 30: ...able the needle thread 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 Moto...

Page 31: ...and fixing plate 3 Pull out the Machine socket unit connector 4 Remove Screw C and remove the Idler 5 Remove Screws D 2 pieces and take out Switching power supply To attach 6 Follow the above procedur...