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Round Tooth Belt (RT)

The Janome QMP16SU drive train assembly uses a round tooth belt system. Round tooth (RT) pulleys are

used to match the round tooth belt and a flat (no teeth) belt tensioner pulley for belt tensioning.

The drive train assembly with RT belt requires the following parts:

• RT Belt QM11416

• RT Motor Pulley QM11413

• RT Idler Pulleys (2) QM11414

• Belt Tensioner with flat Pulley QM11415

• RT Hook Shaft Pulley QM11412

• RT Main Shaft Pulley QM11411

Содержание QMP16SU

Страница 1: ...ight Timing 26 Check and Adjust Axial Play 27 Check the Base Plate Wheels 29 Check Motor Drive Timing Belt Tension 30 Adjusting the Hopping Foot Adapter 32 Adjusting the Presser Bar Height Internal Ad...

Страница 2: ...epair efforts In addition to the teaching aids found herein you will also find all of the tools listed that are necessary for adjustments If you need help in locating these tools for purchase please c...

Страница 3: ...he direction of normal rotation unless otherwise instructed This is especially true when making the loop lift timing and needle height adjustment Exceptions are when removing thread locks or testing b...

Страница 4: ...X 7 Needle Sizes recommended From 80 12 to 125 20 Hook System Rotary Horizontal Axis M class bobbin Bobbin Type Aluminum Class M Bobbin Case Type MF Motor Type Brushless DC Needle Positioning Up and...

Страница 5: ...ool Tension assembly three hole thread guide motor pulley hook 3 5 mm Allen socket head cap screw class 8 8 5 6 Nm Uses 4 mm Allen tool Front cover large Belt tensioner Drive train bracket 4 5 mm Alle...

Страница 6: ...earth ground U U CAUTION Ensure all insulative materials plastics paper etc are at least one foot away from the work area U U CAUTION Ensure circuit boards are either mounted to the machine in their E...

Страница 7: ...s circled Remove the thread mast Tool 3 mm handle hex wrench 1 Loosen and remove the two screws in the thread mast 2 Remove the thread mast Loosen or remove the three power plate screws from the botto...

Страница 8: ...der 2 Remove the six remaining frame screws 3 Turn the handwheel until the take up lever is about halfway down into the slot in the front cover 4 Separate the front frame cover Make sure the take up l...

Страница 9: ...ighten the screws to ensure the front cover is tightened evenly 3 The short part of the L hex tool will be in the screw socket and the long part of the tool will be in the hand Use the appropriate L h...

Страница 10: ...Control Board power to Motor Driver Board power connetion J16 yellow and black 3 pin C Control Board to Main Shaft Encoder connection J8 4 pin D Control Board to Motor Driver connection J13 8 pin E F...

Страница 11: ...cable to control board C connection mounted in the front cover Yellow and black power into motor driver board from the control board from connection B Motor driver board control cable from control bo...

Страница 12: ...W 7 QM20795 CABLE TERMINATOR18 SRcable 8 QM21852 CABLE GNDSIGNAL EARTH24 9 QM21868 CABLE CPODTODRIVER18E 10 QM22007 CABLE DCPOWERCPODTODRIVEROEM2 11 QM22463 CABLE ENCODERDISK18 24 1 QM20006 CABLE USBA...

Страница 13: ...efrontcover 4 QM20015 CABLE PSRingto2pinControl Cablefrompowersupplyringstothe2pinconnection onthecontrolboardinsidethefrontcover locatedatthe rightrearofthemachine 5 QM20142 CABLE LEDRINGSD Frontligh...

Страница 14: ...totheXandYencodersfor StitchRegulation 8 QM21852 CABLE GNDSIGNAL EARTH24 Groundcableforpowersupplyandpowerplate 9 QM21868 CABLE CPODTODRIVER18E Controlboardtomotordriverboardcommunicationcable 10 QM22...

Страница 15: ...QMP16SU Service Manual 15 QMP16SUCABLES 11 QM22463 CABLE ENCODERDISK18 24 Mainshaftencodercableforneedlestop up downposition...

Страница 16: ...Blue Mikrozella G 8 OY Replacement Lube 2 Blue QM49302 3 Yellow GLY 2100 Replacement Lube 3 Yellow QM49303 4 Green IsoFlex NCA 15 Replacement Lube 4 Green QM49304 5 Orange GLY 151 Replacement Lube 5...

Страница 17: ...nt cover lubricate with Lube 1 Red between the bearing and the shaft on both sides of the bearing and replenish as needed with Lube 2 Blue between bearing outer diameter and the bearing support at the...

Страница 18: ...of the needle and presser bars One drop on each bearing of the hopping foot 5 places 4 Green IsoFlex NCA 15 Inside caged needle bearings 2 places 3 Yellow GLY 2100 One drop per orifice articulating l...

Страница 19: ...ad Guide A 4 Three Hole Thread Guide B 5 Thread Guide C 6 Top Thread Tension Assembly 7 Stirrup Thread Guide D 8 Take Up Lever 9 Thread Guide E 10 Needlebar Thread Guide F 11 Front Casting Frame 12 Ru...

Страница 20: ...hand Hand Wheel Check Ensure there is a gap of 1 0 mm to 2 5 mm between the frame and the hand wheel The hand wheel should not rub against the machine cover it should not be loose and there should not...

Страница 21: ...oning properly Top tension assembly fully assembled two views Adjust if necessary Tool 2 mm and 2 5 mm hex wrench 1 Check the relative location of the tension knob before removing it 2 Remove the knob...

Страница 22: ...the spring returns to the end of the slotted groove when pushed and released 4 Tighten the set screw firmly 5 Replace the top tension into the machine Ensure that the take up spring straight piece is...

Страница 23: ...t bolt is pushed firmly all the way into the barrel and tighten the barrel set screw onto the center split bolt 4 Make sure the top tension assembly is pushed all the way into the shoulder on the fron...

Страница 24: ...d on the respective flat on the shaft If not then tighten it Check 2 Pitman Crank Adjust if necessary Tool 5mm hex tool Make sure the first screw tapered screw has been fixed firmly into the hole in t...

Страница 25: ...he flat First screw Main Shaft Timing Pulley on flat Flat Check 5 Hook Shaft Timing Pulley Adjust if necessary Tool 2 5 mm handle hex wrench The hook shaft timing pulley rotates the opposite direction...

Страница 26: ...he shaft to enhance the weight of the pitman to better balance the machine It is positioned so as to remove all axial play in the main shaft without creating any tight spot It is then rotated radially...

Страница 27: ...3 Adjust so that there is minimal to no play 4 Provisionally set the screws 5 Check that the shaft has minimal play and no tightness from the collar being too tight Do this by rotating the shaft throu...

Страница 28: ...when tightened causing variation of tightness or play as the collar rotates 360 To ensure that there is no tightness or play the collar should be checked through a full rotation until it has minimal t...

Страница 29: ...ex wrench Thin shim washers or material may be used on the front base plate Loosen the two front base plate screws with a 6mm hex tool Shim between the bot tom of the machine back casting and the top...

Страница 30: ...that there is an immediate transfer of motion to all components driven by the belt This means that when the handwheel is moved the hook moves immediately or when the hook is moved the handwheel moves...

Страница 31: ...al 31 Timing Belt Tensioner IMPORTANT Ensure that the special washer with step is down into the tensioner bracket slot and flat not tilted when tightened This ensures the tensioner will not slip resul...

Страница 32: ...foot mount adaptor jam nut Check the number of exposed threads below the jam to confirm that it is close to this number If it is not close to 6 8 exposed threads this will alert you that someone has a...

Страница 33: ...t can cause stitch problems including skipped stitches Adjust if necessary Tool 3 mm hex wrench 0 5 mm feeler gauge 1 Turn the hand wheel until the needle bar is at its lowest position 2 Place the 0 5...

Страница 34: ...p wobbles the needle is bent and should not be used to adjust the machine 3 Insert the needle into the needle bar and make sure it is centered in the stitch hole of the needle plate front to back betw...

Страница 35: ...or three turns then back off screw C a little X axis access holes 3 Push the head frame back against the main frame so that screw C touches the main frame While pushing the head frame back adjust scr...

Страница 36: ...nstall the needle ensuring that the eye is straight out to the front of the machine and the end of the needle butt is touching the top of the needle stop sight hole in the needle clamp above the needl...

Страница 37: ...edge of the needle This shows the loop lift 10 The hook point should be lightly brushing or touching the needle inside the scarf This is the needle distance NOTE In this case there is a very slight ga...

Страница 38: ...cannot make a stitch No loop no stitch If all of the general check and adjustments have been performed and you have determined that the timing needs adjustment then proceed with the timing adjustments...

Страница 39: ...ft clamp must have a plastic protective compression pad to avoid damaging the coating on the needle bar IMPORTANT The timing and needle distance adjustment must be done with the front machine cover on...

Страница 40: ...nd cause other issues Adjust if necessary If correction of loop lift or needle distance is necessary then the bobbin case basket must first be rotated down NOTE With the bobbin case basket in the norm...

Страница 41: ...are finished with the timing adjustments 3 Snug the stop finger screw 4 Rotate the basket 180 degrees until large cut out is up towards needle as shown at the right You will now need to hold the bask...

Страница 42: ...ee step 4 under the Check for Loop Lift and Needle Distance making sure to turn the hand wheel in the direction of motion 6 Set the hook to the correct positions by sliding the hook axially needle dis...

Страница 43: ...f you push on the tool while tightening the hook may move throwing the settings off 11 Tighten both screws tight with the 2 mm handle hex tool 12 Reset the loop lift clamp and gauge again to check tha...

Страница 44: ...ttom of the hook point should be 1 0 mm above the top of the needle eye 1 0 mm If needle height adjustment is necessary 1 Lower the needle bar to its lowest position 2 Insert a screwdriver through the...

Страница 45: ...with the other hand Rotate radially until the hole is at front and tighten the driver screw firmly U U CAUTION Under no circumstance should the needle bar clamp screw be completely loosened Failure t...

Страница 46: ...If set too tight the thread will get stuck around the stop finger and may jam the machine 0 8 mm to 1 0 mm Shown from underside looking up If an adjustment is necessary 1 Loosen screw A and adjust th...

Страница 47: ...ok point should be 1 0 mm above the needle eye If the height of the needle appears to be out of adjustment first install the loop lift clamp and 2 2 mm feeler gauge as shown in the adjustment of loop...

Страница 48: ...tall the cylinder tool with the flat side up 2 Rotate the cylinder tool so that the flat side is down 3 Bring the needle to the lowest point by rotating the hand wheel 4 Slide the cylinder tool gently...

Страница 49: ...e with the cylinder tool groove If an adjustment is necessary loosen the needle bar driving clamp slightly and raise or lower the needle bar 6 Reinstall the hook and set loop lift at 2 2 mm and reset...

Страница 50: ...and powered on you can rotate the hand wheel and see the green LEDs flash to indicate that the encoder is working properly The green Speed LED on the left side of the board should flash on and off at...

Страница 51: ...inside the front cover of the machine a With the control board accessible and all cables attached power up the machine and verify that the green LED D4 Needle turns on and off to indicate Needle Up an...

Страница 52: ...e changing the power supply confirm the following 1 The wall outlet is providing power 2 The machine power cord is plugged firmly into the wall outlet and into the back of the machine and providing po...

Страница 53: ...e 100 segments of the outer encoder disk If some segments fail to cause the LED to turn on or off the sensor board may need to be adjusted or replaced Power Supply Chirping A repeating chirp coming fr...

Страница 54: ...beat fashion indicates the processor is running D6 Speed Flashes 100 times per revolution of the hand wheel D5 Option Should be on when the stitch regulation over speed alarm is on D4 Needle Should be...

Страница 55: ...ting out the control board Begin plugging the cables back in one at a time powering off between the connection of each cable until you find the cable that is causing the issue If it is a display cable...

Страница 56: ...munications problems To trouble shoot first start at the easiest and most obvious possible causes and work towards the more complicated and less obvious last Possible Solutions Try rebooting the Janom...

Страница 57: ...e light ring to the Control board for power connection The light ring assembly comprises three part numbers the circuit board the cover and the cable Control board with LED light ring power connection...

Страница 58: ...are used to match the round tooth belt and a flat no teeth belt tensioner pulley for belt tensioning The drive train assembly with RT belt requires the following parts RT Belt QM11416 RT Motor Pulley...

Страница 59: ...ed at the machine s front or rear display connections Needle LED is off from when the take up lever is up until the needle is down BDC The LED is on from when the needle is down BDC until the take up...

Страница 60: ...if in manual mode or if in stitch regulation mode with handlebars disconnected Test LED3 and Test LED4 Are both off because there is no communication to the unplugged front display Needle LED Goes on...

Страница 61: ...play attached to the machine to communicate with the Control board With the front handlebars plugged into the machine the LEDs display as follows Test 1 LED goes on when the start button on the handle...

Страница 62: ...e QMP16SU Screens Main Screen Manual Main Screen Regulated Precision Main Screen Regulated Cruise Machine Tools Left options Calculator Alarms Languages Right options Diagnostics Timers Update Calcula...

Страница 63: ...Screen Diagnostics Screen Left options Motor Sensor Test Motor Speed Test Y Motion Sensor Test Right options Needle Sensor Test Keypad Test X Motion Sensor Test Motor Sensor Test When to use the Motor...

Страница 64: ...p on the motor driver board Testing with a replacement motor driver board causes the motor to function properly be sure the driver board has been properly calibrated at the factory for the specific ma...

Страница 65: ...beeping with constant motion indicate a problem with the Y axis encoder NOTE The most likely cause of a problem is a stitch regulator wheel that is not making consistent contact with the track Check...

Страница 66: ...s the X Motion Sensor test button Slowly move the machine left and right You should hear a pulsing beep that pulses faster as you move the carriage faster A solid beep no beep or periods of irregular...

Страница 67: ...d 2 With the machine powered off use a wire a paper clip works great to jumper pins 2 and 3 of the 9 pin stitch regulator connector at the back of the Control board When the machine is powered on burn...

Страница 68: ...nt handlebars attached the speed calibration settings are not reset back to factory settings however the speed calibration is adjusted from where the values currently are Run burn in for four to five...

Страница 69: ...QMP16SU Service Manual 69 Notes...

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