HQ Sweet Sixteen Service Manual.indd
Contents
1. Ensure that the needle bar thread guide is straight towards the front of the machine the position where the user stands to use the front handle bar Figure 10 3 If correction is necessary slightly loosen the needle bar driver screw Shown in Fig 10 4 on next page while hold ing the needle bar with the other hand Rotate radially until the hole is at front and re tighten the driver screw fi rmly Figure 10 1 1 0 mm Figure 10 2 Access hole Figure 10 3 Thread guide hole to front Needle Bar Driver Screw HandiQuilter com Page 33 10 Adjusting the Needle Height Continued Note Under NO circumstance should the needle bar clamp screw be completely loosened Failure to observe this caution can result in the uncoupling of the nee dle bar from the needle bar driver If this happens do not run the machine Remove the front frame cover reassemble the needle bar to the needle bar driver and readjust Figure 10 4 Front cover off to illustrate the needle bar driver screw postion Needle Bar Driver Screw Page 34 HQ Sweet Sixteen Service Manual 11 Adjustment of the Stop fi nger Tools required 2 5 mm handle Allen Check The engagement of the stop fi nger and throat of the bobbin case support basket must have a clearance of 0 8 mm to 1 0 mm Figure 11 2 This clearance ensures that adequate space exists for thread escapement during the sewing process Note If set with too much needle clearance t2. Adjust needle distance and loop lift as directed in the next section beginning on page 30 Page 30 HQ Sweet Sixteen Service Manual 9 Adjustment of the Loop Lift and Needle Distance Continued Note If needle height is not set roughly close rst it will not be possible to set needle distance correctly If a correction is needed If still in place from the check remove the clamp The basket must be rotated down in order to make setting the needle distance properly possible See previous page for information and pictures on rotating the basket down Note Once the basket has been turned down it must be held while turning the hand wheel to prevent it from turning and colliding with the needle Note When the hook screws have been loosened the ad justments of the loop lift and needle distance are possible since the hook can be moved radially as well as axially Note Some hooks are tighter than others on the hook shaft You may be tempted to pry on the hook mecha nism If you pry on the hook it may become damaged irreparable and unusable Loosen the two screws on the hook base 2 mm handle Allen Figure 9 10 Replace the clamp and reset with the 2 2 feeler gauge as described on page 28 making sure to turn the hand wheel in the direction of motion Set the hook to the correct positions by sliding the hook axially needle distance on its shaft as well as radially loop lift setting the hook point relative
3. 8 8 5 6 Nm Uses 4 mm Allen tool Front cover large Belt tensioner Drive train bracket 4 5 mm Allen set screw Class 8 8 2 4 Nm Uses 2 5 mm Allen tool Main shaft timing pulley hook shaft timing pulley collar 5 6 mm Allen socket head cap screws Class 8 8 9 9 Nm Uses 5 mm Allen tool An exception must be observed here since the screws are considered soft jointed and shallow threaded and are used externally It is therefore advised that this torque specification not exceed 6 Nm Base plates 6 6 mm Allen set screw Class 8 8 4 5 Nm Uses a 3 mm Allen tool Hand wheel Page 6 HQ Sweet Sixteen Service Manual HQ Lubrication Specifications Rep Lube Kit Part QM49262 Lubricant Type 1 Kluber Constant OY68 Red 2 Kluber Mikrozella G 8 OY Blue 3 Kluber GLY 2100 Yellow 4 Kluber NCA 15 Isoflex Green 5 Kluber GLY 151 Polylub Orange 6 Conoco Hydroclear R amp O 32 Purple or similar white oil i e Texaco 22 or Velocite 10 1 Red OY 68 2 Blue Mikrozella G 8 OY 3 Yellow GLY 2100 4 Green IsoFlex NCA 15 5 Orange GLY 151 6 Purple Texaco 22 hook race only All the above in box w booklet HQ Lubricant Order Numbers The HQ Sweet Sixteen lubricating schedule should be followed every year up to every two years to ensure top mechanical performance Machine Components All main bearings Main bearing reservoirs Take up lever articulating link and needle bar driver Take
4. Figure 8 2 While pushing the head frame back into the main cast ing gently slide the head frame left or right to correct as necessary Tighten screws A and B in Figure 8 2 Note If needle position changes repeat the process Do not tighten screws D or G at this time A B HandiQuilter com Page 27 Figure 8 3 F H G D C E 8 Needle Position Check amp Adjustment Continued Adjustment for X axis Cover On see page 14 for wire connections Note This adjustment is done with the front frame cover on Important Note The picture shows the cover off for illus tration purposes only The primary adjustment is accomplished using the right side of the head frame shown in Figure 8 4 The screws on the left side are loosened to allow movement of the head frame If a correction is necessary Loosen screws F G and H through access holes Figure 8 4 2 or 3 turns Loosen screws D and E 2 or 3 turns and back off screw C a little Push the head frame back against the main frame so that screw C touches the main frame Adjust screw C to bring the needle to center in the needle plate Gently tighten screw E until it lightly touches the main frame Tighten screw D Note If the needle changes repeat the process Repeat the process on the left side of the head frame Note If the needle changes repeat the process Figure 8 4 X Axis access adjustment holes X Axis Acce
5. cable red and black position labeled both J16 and Motor on board A B C Figure 2 6 C Pod Circuit Board Identifi cation Detail A Encoder connection B Motor driver connection C Display Connector D E F Figure 2 8 C Pod cables A F shown disconnected G Lighting connection for light ring J14 J15 J16 Motor D C E A F B G Page 14 HQ Sweet Sixteen Service Manual Figure 2 10 Figure 2 9 Figure 2 11 Figure 2 9 Figure 2 11 A 6 To remove power supply loosen the 3 screws on the right side and remove the 3 screws on the left side shown circled in orange in Figure 2 9 Slide the power sup ply to the left and unplug the bottom cable Figures 2 9 2 11 Important Note Insulator material must cover all metal on the back of the power supply for proper insulating purposes See position A in Figure 2 10 Continue to Step 7 on page 18 2 Removal of the Front Cover Continued HandiQuilter com Page 15 Figure 2 13 Location of encoder disc and sensor circled Figure 2 12 Cable Identif cation F Motor driver board with motor power top B Motor driver center G Motor bottom F G B Internal Wiring Reference Photos Page 16 HQ Sweet Sixteen Service Manual Figure 2 15 Figure 2 14 Figure 2 16 Figure 2 14 Figure 2 16 Figure 2 17 Important note Two ground wires are fi xed with a socket head cap screw and star washer shown circled
6. sure you hold the hopping foot while tight ening and loosening the jam nut as shown Figure 7 6 Warning if the jam nut is not properly tightend the hopping foot may become loose and be hit by the needle causing serious machine problems Page 26 HQ Sweet Sixteen Service Manual 8 Needle Position Check amp Adjustment Figure 8 1 Note X amp Y marks for clarif cation Bobbin case end Figure 8 2 G D The needle position adjustment is the most important of all adjustments in the machine Needle position provides the foundation for which all other settings are made Once the needle position has been completed great care must be maintained to keep this setting It is important that the sewing machine be transported carefully to avoid bumping or dropping Check Use a new System 134 Size 100 needle Check the needle for straightness on a fl at surface such as the needle plate The needle must be centered in the stitch hole of the nee dle plate as shown in Figure 8 1 2 mm and 3 mm handle Allen Check with needle eye ush with the needle plate do not check with needle in the lowest postions Add screw to screw after adjustment for Y axis screw to screw This adjustment is done with the cover off Adjustment for Y axis Cover Off Note that adjustment is done with the front frame cover off If a correction is necessary Loosen rst screws D and G Figure 8 2 Loosen screw A and screw B
7. to the needle as described on the next page For radial position of loop lift see Figure 9 8 Figure 9 8 Loop lift and needle height both set correctly Figure 9 9 Needle guard Figure 9 10 Hook screws HandiQuilter com Page 31 9 Adjustment of the Loop Lift and Needle Distance Continued Adjust the needle distance by sliding the hook axially toward the needle to as close as possible Note When properly set the needle will barely move when pushed on lightly with a small screwdriver ideally less than 001 It is better for the needle to barely touch than be too far away from the hook Too much needle distance may cause skipped stitches and other stitching problems Too little distance may cause noise and or hook needle guard wear Slide the hook on the hook shaft axially until it is lightly touching the needle scarf or until it has a slight gap less than 001 to set the proper needle distance Lightly tighten the 1st screw with the 2 mm ball end L Allen tool while providing resistance against the adjust ment by holding the hook in place with your other hand Carefully rotate the hook on the hook shaft to set the loop lift Figure 9 8 Carefully snug and then tighten the 1st screw Remove the clamp While holding the basket in the down position and from turning rotate the hand wheel until the 2nd hook screw is accessible Carefully snug then tighten the 2nd screw If you push on
8. up caged needle bearings Presser bar guide and plunger lifting link and Pitman eccentric Hook race Replacement Lube Replacement Lube Replacement Lube Replacement Lube Replacement Lube Replacement Lube Rep Lube Kit Box 1 Red QM49301 2 Blue QM49302 3 Yellow QM49303 4 Green QM49304 5 Orange QM49305 6 Purple QM49306 1 6 Kit QM49262 HQ Lubricating Schedule HandiQuilter com Page 7 Apply one drop of Lube 6 Purple to the raceway of the bobbin case support two to three times per day This application is based upon sewing for 8 hours of machine time or ap proximately every other bobbin change If the machine is used less lubricate the hook less frequently After the lubrication of the hook it is recommended that one momentarily sew on scrap material before resuming the sewing of the quilt Failure to do so may result in oil stains on the quilt Lube 1 Red between the bear ing and the shaft and Lube 2 Blue between bearing OD and the bearing support at 6 places shown Apply one drop of Lube 6 Purple to the raceway of the bobbin case support two to three HQ Sweet Sixteen Lubrication Page 8 HQ Sweet Sixteen Service Manual 5 5 3 orif ce located a little behind the top radius 1 Red OY 68 One drop on the side of the nee dle and presser bars 4 places 3 Yellow GLY 2100 One drop per orif ce articulating link take up lever and needle bar driver 3 places 4 Green Is
9. SERVICE MANUAL 12 20 10 2010 Handi Quilter Inc Designed by a Quilter for Quilters Table of Contents About the HQ Sweet Sixteen About the Manual Service Manual General Rules General Specifications Assembly Torque Specifications Lubrication Specifications Lubrication Instructions General Observation of Front Frame Cover Mast and Hand Wheel Removal of Front Cover Securing Flats and Screws Axial Play Check and Adjustment Adjusting the Base Plate Adjusting the Motor Drive Timing Belt Tension Adjusting the Presser Bar Height Presser Foot Needle Position Check amp Adjustment Adjustment of the Loop Lift and Needle Distance Adjusting Needle Height Adjustment of the Stop Finger Adjusting the Needle Height with Cylinder Tool Electronic Adjustments and Indicators Indications of Speed Needle Position Sensor Indications of Speed Needle Position Sensor Failure LED Identification Control Pod Power LEDs Display Communications LEDs Fuses 0 1 2 3 4 5 6 7 8 9 10 11 12 13 3 3 3 4 5 6 7 8 9 11 12 18 19 20 21 22 23 24 25 26 27 28 31 32 33 34 35 36 37 40 37 38 39 39 40 40 Section Page A digital copy pdf of this manual is available online on the Rep website Go to www HandiQuilter com and click on Rep Login then use the username and password provided to you to obtain access to the Rep website HandiQuilter com Page 3 The HQ Sweet Sixteen utilizes high tech electronics and a
10. ar component needle speed encoder or motor driver However if both LEDs are off check to make sure the black power cord is plugged in and the power switch is ON A volt meter may be used to verify that there is 24V DC between the red and yellow power lines J14 and be tween the yellow and black J15 Measuring between the left most pin of J14 and the right most pin of J15 should show about 48V DC If you do not have 24V at either of those connectors 48V between the two combined then the power supplies and attached cables should be inspected for any short circuits or wires breaking away from connectors both on the C Pod side and on the P Pod side If the volt meter indicates that the 48V is present at the C Pod power connector and the C Pod power LEDs are off then the C Pod should be replaced LED Identifi cation Control Pod Power LEDs Page 40 HQ Sweet Sixteen Service Manual Located on the back side of the display circuit board are two LEDs Figure 13 6 These LEDs are not visible without removing the circuit board from the display cast ing The two LEDs will fl ash to indicate whether commu nication is occurring between the display board and the C Pod The LED closest to the edge of the board D10 indicates the display board is transmitting data The LED more toward the middle D8 will fl ash when data is being received Troubleshooting Communication Issues If there is a communications issue between the handlebar b
11. e 6 5 Figure 6 6 Page 24 HQ Sweet Sixteen Service Manual 7 Adjusting the Presser Bar Height Tools required 3 mm handle Allen 0 5 mm feeler gauge 8 mm open end wrench Check When the needle bar is in its lowest position the sewing foot should be no higher than 0 5 mm above the needle plate as shown in Figure 7 3 It is permissible for the hop ping foot ring to lightly touch the needle plate Note The factory default is for the presser bar not the jam nut to be about 1 5 above the needle plate with the needle in the lowest position In this position the foot should be screwed into the presser bar about 10 or 12 revolutions Check the foot without removing it by looking to see that there are about 12 threads of the foot exposed below the hopping foot jam nut It is important to check this before resetting the presser bar height in case the end user has changed the foot height Improper setting of the presser bar height and foot height can cause stitch problems including skipped stitches If a correction is necessary Turn the hand wheel until the needle bar is at its lowest position Place the 0 5 mm feeler gauge Part QM40133 under the hopping foot with the machined edge up Figure 7 3 Loosen screw C through the machine front cover 3 mm Allen driver Figures 7 4 7 5 Wiggle the presser bar up or down to the desired posi tion Tighten screw C by pushing down lightly on the tool blade towards
12. e and circuit board should be inspected for damage and replaced if necessary If the LED indicators are not functioning properly on the display then this most likely indicates a failure in the C Pod and the C Pod should be replaced Display Communications LEDs Fuses 2010 Handi Quilter Inc All rights reserved Printed in the USA 12 20 10 Designed by a Quilter for Quilters Handi Quilter Inc 445 N 700 W North Salt Lake UT 84054 1 877 697 8458 www handiquilter com
13. ent Needle Stop setting Off indicates Down and On indicates Up D7 Test 1 Turns on when the Start button is pressed indicating that the motor should be running Figure 13 4 LED Identif cation Figure 13 5 Near the top of the Control Pod are two green LEDs Figure 13 5 The control pod receives an input of 48V from the two power supplies and it converts this voltage into two different voltage levels The left LED closest to the 18Vdc label indicates that the 18V power is func tioning and the right LED closest to the 5Vdc label indicates that the 5V power is functioning If either of these LEDs is not on fi rst disconnect all cables from the C Pod other than two of the power cables at the top only plug in J14 and J15 not the black and red cable If the LED s are still not on then there may be an issue with one or more of the on board power supplies If the LEDs both begin working again this may indicate that one of the peripherals is shorting out the C Pod Begin plugging the cables back in one at a time powering off between the connection of each cable until you fi nd the cable that is causing the issue If it is a display cable then the issue could be the internal cable or the display itself You could then try plugging that cable back in with the display disconnected to verify whether it is the cable or the handlebar If it is one of the other cables then the problem may be related to that particul
14. et the thumbscrew lightly Place the 2 2 mm feeler gauge between the clamp and the bottom of the head frame bearing surface Figure 9 1 Raise reset and tighten the clamp pinching the 2 2 feeler gauge inbetween the clamp and projected bearing This step may need to be repeated a few times to remove all excess play between the clamp and gauge Remove the 2 2 feeler gauge Figure 9 2 Rotate the hand wheel in the direction of motion This is very important until the clamp lightly touches the gauging surface Figure 9 3 Important Note If the hand wheel is turned too hard the clamp may move making the check invalid Check the position of the hook point relative to the needle Figure 9 4 Check the distance between the needle and the hook point It should be as close as possible without touching Ideally it will be less than 001 gap between the two Too much needle distance or improper loop lift settings may cause shredding and skipped stitches Too little distance will cause the needle to bend during sewing and cause other issues Note This is explained in more detail on page 31 Figure 9 1 Figure 9 2 Figure 9 3 Figure 9 4 Loop lift and needle height both set correctly HandiQuilter com Page 29 9 Adjustment of the Loop Lift and Needle Distance Continued Important Note The timing and needle distance adjust ment must be done with the front machine cover on Figure 9 5 Stop f nger en
15. gaged with bobbin case installed Figure 9 6 Stop f nger engaged without bobbin case Figure 9 7 Basket rotated 180 degrees down facilitating needle distance adjustment If correction of loop lift or needle distance is necessary then the basket must fi rst be rotated down Rotating basket down Note With the bobbin case basket in the normal posi tion the basket needle guard may de ect the needle and makes it dif cult to accurately adjust the needle distance between the hook point and the back of the needle scarf It is important that the basket needle guard be rotated down out of the way to allow correct adjustment of the needle distance setting See Figures 9 5 and 9 6 Rotate the basket out of the way to facilitate the needle distance adjustment Important Note After moving the stop nger you need to hold the basket in place when turning the hand wheel to prevent the needle from hitting the basket Loosen the stop nger screw with the 2 5 mm handle Allen tool Slide the stop nger out of the basket groove until the basket can be rotated You may need to remove the stop nger In this case don t worry about reinstalling it until after you are nished with the timing adjustments Snug the stop nger screw Rotate the basket 180 degrees until large cutout is up towards needle as shown in Figure 9 7 You will now need to hold the basket in that position See important note above
16. he basket will be noisy and can also more easily slip out of adjust ment If set too tight the thread will get stuck around the stop nger and may jam the machine If an adjustment is necessary Loosen screw A Figure 11 1 and adjust the stop fi nger so the proper clearance is achieved as shown in Figure 11 2 Important Ensure that the stop nger stays up tight against the machined edge at the left of the stop nger as shown in Figure 11 1 Note Figures 11 1 amp 11 2 are shown from the underside looking up not from the top side looking down The machined edge helps support the stop nger from twisting to the side allowing the basket to spin out of position be hit by the needle and damaged Tighten screw A Figure 11 1 Shown from underside loooking up Machined edge Screw A Figure 11 2 Shown from underside looking up 0 8 mm to 1 0 mm Figure 11 3 Provided for reference Stop fi nger cutout HandiQuilter com Page 35 Figure 12 2 12 Adjusting the Needle Height with Cylinder Tool Tools required Fillister screwdriver 3 x 150 mm in length needle height cylinder tool Check Turn the hand wheel in the direction of motion until the hook point becomes even with the right side of the needle as shown in Figure 12 1 The hook point should be 1 0 mm above the needle eye If the height of the needle appears to be out of adjustment install the loop lift clamp and 2 2 mm feeler ga
17. hten the set screw 3 mm handle Allen Figure 1 1 b Page 10 HQ Sweet Sixteen Service Manual Figure 1 4 Figure 1 5 Top tension assembly fully assembled two views Figure 1 3 3 Check Inspect Test the condition of the thread guides 1 2 3 4 thread stirrup 5 thread guide 6 and needle bar thread guide 7 for any abrasions cuts or electroplating blistering Test each guide by fl ossing it with thread left to right and front to back in all directions checking for any sharp defects that may damage or cut the thread Replace any damaged parts Figure 1 3 2 mm and 2 5 mm handle Allen Check the top tension assembly for the following Check between the tension discs for any foreign material that could prevent the discs from functioning properly If a correction is necessary Check the relative location of the knob before removing the knob Remove the knob detent washer tension discs and cone spring See Figures 1 5 through 1 10 Clear and reassemble Note On very rare occasions if the ma chine has been used an extreme amount it is possible for a groove to be worn into the tension discs This will make it impossible for the tension to be adjusted correctly as the thread can pass through this worn groove in the tension discs while the unworn part of the discs touch resulting in no tension on the thread in the groove This may result in thread nests on the bottom of the quilt The top tension assembly will need to be
18. in Figure 2 15 for safety grounding Important note Insulator material must cover all metal on the back of the power supply for proper insulating purposes see circled area in Figure 2 16 P pod Cable Reference Photos J8 Encoder HandiQuilter com Page 17 Figure 2 18 Inside View of C Pod C Pod and Cables P Pod and Cables Figure 2 19 Inside View of P Pod Do not plug in main power or run the quilting ma chine with the P pod taken off of the machine and or open so that any human body part could come in contact with electrical energy Note 1 The C Pod and the P Pod are STATIC SENSI TIVE parts and should not be handled without special discharge tools For this reason all C and P Prints will be exchanged in the pod covers Do not remove the Printed Circuit Boards PCBs from the pods Note 2 The plugs are labeled and keyed on the C pod circuit board Note 3 After installing the cables through the serv ice hole on the front cover see Figure 2 7 carefully push the excess cable back into the machine as there is no room in the pod for extra cable The cables are to the right of the drive train bracket and therefore protected from moving parts on the left side DC Power Connections at top of photo Left red and yellow cable and connector labeled J14 Center black and yellow labled J15 Right red and black labeled Motor Control Board Connections left center Encoder Motor Driver Display Connectio
19. ine Safety warnings are included throughout this manual where appropriate but these warnings do not address all possible safety concerns that might confront the service technician the construction of a house Walls cannot be erected until the foundation is in place Similarly this serv ice manual has been written with an adjustment logic that is driven by the construction processes used to create the machine If the service technician carefully follows the adjustment steps in the order presented a fine running quilting machine is possi ble each and every time business hours For additional help in technical training we refer you to the training schedule at the Corporate Office in North Salt Lake Utah which is available on the Rep website or by calling the HQ Rep Support Line at 1 866 262 1680 A digital copy pdf of this manual is available online on the Rep website Go to www HandiQuilter com and click on Rep Login then use the username and password provided to you to obtain access to the Rep website When working on or near any live electrical as semblies the power cable must be removed from the machine We urge you to observe the cautions in the manual Please note that the hand wheel must always be turned in the direction of normal rotation unless otherwise instructed This is especially true when making the loop lift timing and needle height adjustment Exceptions are removing thread locks or testing belt
20. ition and that the disk is not dirty or damaged d If the disk appears to be in good condition slowly rotate the hand wheel with power on and all cables connected while watching the Speed LED It should turn on and off with each of the 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 Indications of Speed Needle Position Sensor Failure HandiQuilter com Page 39 When you fi rst power on the HQ Sweet Sixteen each of the LEDs in the Control Pod LED bank will briefl y fl ash in succession Following that initial fl ash the left most LED labeled HrtBt should fl ash in a heart beat fashion to indicate that the processor is running and is not locked up If the processor is locked up these LEDs will be locked in either an On or an Off state A description of each of the 8 LEDs and its function is listed below Figure 13 4 D3 HrtBt Flashing in a heartbeat fashion indicates the processor is running D6 Speed Flashes 100 times per revolution of the hand wheel D5 Option Not currently used D4 Needle Should be Off when the needle is in the Up position and On when it is down D10 Test 4 Should ash rapidly when communication with the handlebars is established D9 Test 3 Not currently in use D8 Test 2 Indicates the curr
21. ixteen has been designed using fl ats and special screws to help prevent loop lift timing from slipping except at the hook If the hook cannot slip then something has to break when something goes wrong The hook is designed to be adjusted without removing the front cover First check the torque specifi cations chart on page 5 then check the following locations making sure that the fi rst screw of a timed component has been fi xed fi rmly on the respective fl at on the shaft 1 The Pitman crank Figure 3 1 5 slotted screwdriver 2 The take up lever driving link Figure 3 1 3 mm handle Allen 3 The main shaft timing pulley Figure 3 2 2 5 mm handle Allen 4 The hook shaft timing pulley Figure 3 4 on page 20 2 5 mm handle Allen 5 Trust collar on slanted fl at Note The screws are generally positioned 120 degrees apart When the fi rst screw Position 1 has been located and tightened on a fl at the second screw is then tight ened compounding the tightness of the fi rst screw thus securing and assuring that timing will not change Note The thrust collar fl at is inclined The left screw will tighten onto the inclined fl at The collar is a wide collar with two in line screws The fi ne fi nish of the collar goes against the thrust washer and bearing The left screw clos est to the bearing is provisionally tightened and the right screw is then fully tightened Finally the left screw is fully tightened Check to make su
22. m 3 mm 4 mm handle Allen 4 mm L Allen 3 fl at screwdriver and 2 Phillips screwdriver 1 Loosen set screw on top of cover position A in Figure 2 1 Rotate the 3 hole thread guide to allow access to the frame screw Figure 2 2 then re snug the screw so the guide will not become misplaced 2 mm handle Allen tool 2 Remove the three frame screws circled in Figure 2 3 3 mm handle Allen 3 Before removing the C pod use a grounding mat and wrist strap Connect the two ground clips to the bare threads of the hopping foot Figure 2 4 Caution Make sure the machine is unplugged from the wall before removing the C pod or whenever working on the machine 4 Remove the C pod by unscrewing the 4 screws Figure 2 5 2 Philips screwdriver 5 With the machine properly grounded to a ground ing mat and with a ground wrist strap Figure 2 4 carefully unplug the cables from the C pod Be careful not to touch the circuit board or damage the cables or plugs They should be pulled straight out by the connector housing Page 13 Figures 2 6 2 8 Note The plugs are labeled and keyed on the C pod circuit board See Figures 2 6 2 13 for reconnection information Continue to Step 6 on page 14 A HandiQuilter com Page 13 Figure 2 7 C Pod Cable and Circuit Board Identifi cation D Left cable red and yellow position labeled J14 on board E Center cable black and yellow position labeled J15 on board F Right
23. n innovative touch pad user interface to offer greater functionality and ease of operation to home quilters than ever before conceived in the quilting industry The HQ Sweet Sixteen quilting machine is a high quality machine that incorporates very robust design features and is very easy to service The HQ Sweet Sixteen machine is constructed fol lowing a specific sequence of operations similar to About the HQ Sweet Sixteen About the Manual and HQ Support The purpose of this service manual is to help the technician complete a repair on a machine accurately and quickly The manual is complete with photo graphs and explanations that we hope will aid you in your repair 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 contact Handi Quilter Handi Quilter s Customer Relations technical staff is available for assistance and advice during normal Service Manual General Rules Adjustments shown in the manual should only be made if a setting deviates from the tolerance specified in the manual Adjustments should be made only in the logical se quence shown and described in the manual Do not jump ahead or start in the middle of the adjustment sequence this may cause additional or more serious problems than the original issue Safety must be considered when working on any mach
24. ns The two bottom white connectors at lower left in photo are for AC power out of P pod to the two power supplies One power supply is mounted to the back frame and the second power supply is mounted to the front frame The cables that connect to these connectors each have three black wires CAUTION DANGER OF ELECTRICAL SHOCK DANGEROUS VOLTAGES CAUTION J14 Power J15 Power J16 Motor J13 Motor Driver J11 Display J12 Display J8 Encoder Page 18 HQ Sweet Sixteen Service Manual Figure 2 20 Figure 2 20 Figure 2 21 Figure 2 21 Figure 2 22 Figure 2 22 Figure 2 24 7 Remove the needle plate Figure 2 20 3 fl at screwdriver 8 Loosen both the front and rear base plates a couple turns to allow the front cover to be removed Figures 2 21 and 2 22 Tools needed 5 mm handle Allen wrench 9 Remove the 5 frame screws shown circled in Figure 2 23 Note The fi fth screw is behind the C pod and was removed in step 4 4 mm handle Allen May need 4 mm L Allen tool to break screws loose Note The three small screws shown cir cled in Figure 2 24 were removed in step 2 10 Separate the front frame cover Make sure the take up lever does not get caught in the frame slot Important Note The take up lever is very hard and will break not bend Figure 2 23 2 Removal of the Front Cover Continued HandiQuilter com Page 19 3 Checking and Securing Flats and Screws Figure 3 1 The HQ Sweet S
25. oFlex NCA 15 Inside caged needle bearings 2 places 5 Orange GLY 151 Add grease sparingly to the presser bar slide and plunger Add a small amount between the stylus and cams of both the presser bar lifting link and the hopping mechanism lifting arm 4 places HQ Sweet Sixteen Lubrication Continued 3 1 1 4 4 1 1 3 5 5 HandiQuilter com Page 9 Figure 1 1 a Figure 1 2 Figure 1 2 1 General Observation of the Front Frame Cover Mast and Hand Wheel The following observations accompanied by neces sary adjustments will ensure trouble free thread passage Failure at any of these points will signifi cantly affect thread tension Check 1 The thread mast should be adjusted so that the eyelet loops are centered directly over the spool pins Figures 1 1 a amp 1 1 b If a correction is necessary Loosen the jam nut reposition and tighten the jam nut 10 mm open end wrench Check 2 Make sure that a gap of 1 0 mm to 1 5 mm ex ists between the frame and the hand wheel Note The hand wheel screw is inside the front cover and cannot be seen from the outside of the machine therefore it can only be adjusted with the front cover removed Figure 1 2 If a correction is necessary Usually this would only be necessary if the hand wheel is rubbing has an extreme gap or is loose Remove the front cover see Section 2 loosen the hand wheel set screw position the hand wheel and re tig
26. oard and the C Pod then the transmit and receive LEDs will not be fl ashing at their regular rapid rate Instead they will either be off on or fl ashing only intermittently If this occurs the display will probably not boot up It will remain in the logo screen Possible Solutions Try re booting the HQ Sweet Sixteen to see if the prob lem is corrected If not verify that the cable connecting the handlebar to the machine head is attached properly and has not been damaged both front and rear If this is okay then the issue is related to the internal handlebar cable or possibly the C Pod The internal handlebar cable going to the front could be damaged and should be inspected for damage Figure 13 6 There are two fuses located on the P Pod circuit board Figure 13 7 F2 is the fuse for the HQ Sweet Sixteen and F1 is the fuse for the auxiliary power connector the con nector located just under the main power cord connector on the P Pod If either of these fuses are open there is a problem with the AC power system that needs to be re solved before the P Pod is replaced Check the three pin cables to the power supplies for damage and replace them if necessary If the P Pod is not replaced correctly these cables can be pinched during assembly If a fuse is blown replace the P Pod Figure 13 7 If it does not work in the back then the problem is in the display and the display board and or cable and the ca bl
27. ors The main shaft speed and needle position sensor mounts to the main shaft near the back hand wheel Figure 13 1 It is composed of a disk with two encoder regions The outermost region consists of 100 small segments to provide speed feedback to the control system The inner region consists of only two segments an on region and an off region There is a forked circuit board containing an emitter and a receiver for each of the two encoder regions With the front cover open and the power and control pods hooked up and powered on you can rotate the hand wheel and see the green LEDs fl ash to indicate that the encoder is work ing properly The green Speed LED on the left side of the board should fl ash on and off at a rate of 100 fl ashes per revolu tion as you rotate the hand wheel The green Needle LED on the right should turn on to indicate the needle is in the Up position the take up lever is in its high est position and turn off to indicate the needle is in the Down position Careful inspection of these LEDs as you rotate the hand wheel with the power on will tell you whether the encoder is functioning properly Damage to the encoder disk or any build up of dust oil or other material can impede the transfer of light through the transparent portion of the disk and cause the encoder to miss some pulses Figure 13 1 Indications of Speed Needle Position Sensor Page 38 HQ Sweet Sixteen Se
28. re the main shaft has mini mal to no play and that the collar tightening procedure did not create a tight main shaft condition If so readjust the collar again Take up Lever Driving Link 1st screw Figure 3 3 1st screw Main Shaft Timing Pulley on fl at Flat Pitman Crank 1st screw Thrust Collar on Slanted Flat Page 20 HQ Sweet Sixteen Service Manual Figure 3 4 Hook shaft Timing Pulley 1st Screw Hook shaft timing pulley Tools needed 2 5 mm handle Allen Note The hook shaft timing pulley rotates the opposite direction as the main shaft timing pulley Carefully note the labeled fi rst screw Figure 3 4 Note The hook shaft collar does not have a fl at The fl at is located on the hook shaft timing pulley 1st screw Important Hook Shaft Notes The hook shaft turns two times per stitch and rotates in the opposite direction from the main shaft Please care fully note which screw is the fi rst screw in the direction of motion and on the fl at The hook shaft pulley is set to a specifi c setting from the end of the shaft to allow proper needle to hook distance adjustment Adjust the collar to remove axial play not the hook shaft pulley or the setting can be thrown off which may make it so needle to hook distance cannot be adjusted The HQ Sweet Sixteen utilizes long collars with two screws in line to help prevent the collar from tipping when tightened causing variation of tightness or play as the collar
29. replaced in this instance Top tension assembly part QM10198 Check That the take up spring has a normal torsion ten sion and inspect the spring for any cuts breaks or abra sions When moved by hand and released it should return to the end of the cutout in the top tension assembly If a correction is necessary 2 mm handle Allen 1 at screwdriver Figure 1 5 Please Note Tension knob may be either gray or black in color B A 1 General Observation Continued 1 2 3 4 5 6 7 HandiQuilter com Page 11 Loosen the set screw under the top tension assembly a couple turns as it fi xed into an undercut into the top tension base Screw A Figure 1 4 on previous page Note that the set screw is on about a 30 angle to the machine front cover Loosen the slotted set screw at the rear of the top tension base and rotate the split bolt until the spring returns to the end of the slotted groove when pushed and released Re tighten the set screw fi rmly If the take up spring needs replacing remove the ten sion parts and split bolt and carefully work the spring around until it can be removed Replace with a new take up spring Part QM10197 Make sure the split bolt is inserted all the way into the base and retighten the slotted screw Adjust the take up spring tension so that it barely returns to the end of its slot when pressed to the side and released Figure 1 8 shows this position NOTE Too much spring
30. rotates 360 To ensure that there is no tight ness or play the collar should be checked through a full rotation until it has minimal tightness and minimal play 3 Checking and Securing Flats and Screws Continued First Screw First Position Rule The fi rst screw or fi rst position is ALWAYS located 120 apart in the direction of rotation from the second screw or second position The fi rst screw in direction of rotation goes on the fl at Figure 3 3 120 o Position 2 Direction of rotation Position 1 Figure 3 3 Note First screw in direction of motion goes on the at The rst screw is 120 before the 2nd screw The 2nd screw is then 240 degrees before the 1st screw HandiQuilter com Page 21 Figure 4 1 Figure 4 2 Figure 4 3 4 Axial Play Check and Adjustment Axial or end play on shafting can result in noise wear and faulty sewing Check 1 Check the main shaft by pushing and pulling on the hand wheel Figure 4 1 Note A small amount of main shaft axial play is permissible Too much main shaft play however may cause noise and or stitching issues Remove play here Test left to right If a correction is necessary Remove the front cover Loosen the collar screws 2 5 mm handle Allen Figure 4 2 Adjust so that minimal to no play is detected Provisionally set the screws Check that the shaft has minimal play and no tightness from the collar being too tight by ro
31. rvice Manual Figure 13 2 1 A message on the handle display indicates a Needle Sense Failure a Make sure the Speed Needle Sense cable is properly connected in the C Pod b With the C Pod open and all cables attached power up the machine and verify that the green LED D4 Needle Figure 13 2 turns on and off to indicate Needle Up and Down positions as you rotate the hand wheel D4 works the same way as the Needle LED that is mounted to the internal Needle Speed Sensor board c If the LED does not turn on off properly open the front cover and determine whether the encoder disk has been damaged or is dirty and make sure the sensor board is positioned properly as shown in Figure 13 1 on previous page 2 Running the machine in manual mode the motor at tains full speed prior to reaching 100 on the display a This can be caused by the Speed Needle sensor missing some of the speed pulses First run the Speed test within the Diagnostics menu on either the front or rear handlebar refer to the Diagnostics Tests section in the user manual If the displayed value does not settle on 100 after pressing the Start button on the handles there may be an issue with the motor speed encoder b Remove the C Pod and double check the Speed LED D6 on the circuit board It should fl ash on off 100 times per revolution c Open the front cover and verify that the sensor is in the correct pos
32. ss Holes Page 28 HQ Sweet Sixteen Service Manual 9 Adjustment of the Loop Lift and Needle Distance Important Note The timing and needle distance adjustment must be done with the front machine cover on Loop Lift is a universal hook and timing term for all lock stitch sewing machines When the needle lifts a specifi ed distance from the BDC bottom dead center the hook point is set to coincide with the needle as shown in Figure 9 4 This is the radial posi tion of the hook called Loop Lift commonly referred to as tim ing Another part of timing is the Needle Distance This is the axial distance from the hook point to the needle Loop lift is the radial setting of the hook and needle distance is the axial setting of the hook Both of these are set on the hook and fi xed with the same set screws Since two things are being set at the same time this can be a little diffi cult until practiced Tools required Loop lift clamp part QM40199 2 2 mm forked feeler gauge part QM40136 2 mm ball end L Allen wrench 2 mm handle Allen and a 3 at screwdriver NOTE The loop lift clamp used must have a plastic protective compression pad to avoid damaging the coating on the needle bar Check Observe the following Remove the needle plate Turn the hand wheel until the needle bar is at its low est position or BDC Place the loop lift clamp with special protective com pression pad on the needle bar and s
33. tating the shaft through a few 360o rotations Fully tighten the screws Check shaft again for play or tightness 2 Check the hook shaft by pushing and pulling the hook as shown in Figure 4 3 If a correction is necessary Remove the front cover Remove the play by loosening the hook shaft thrust collar not the hook shaft timing pulley and adjusting out any axial play Figure 4 4 Note There is no at for the hook shaft thrust collar Check for proper setting by rotating shaft through a few 360o rotations Take out play here Collar set screws Figure 4 4 Page 22 HQ Sweet Sixteen Service Manual 5 Adjusting the Base Plate Feet Figure 5 1 Figure 5 2 Tools required 5 mm handle Allen Check 1 The base plate must be adjusted so that the rubber feet will sit fl at on a planed surface Note This is done on a precision surface plate at the factory during assembly If a correction is necessary Thin shim washers may be used as shown in Figures 5 1 and 5 2 HandiQuilter com Page 23 6 Adjusting the Motor Drive Timing Belt Tension The HQ Sweet Sixteen machine utilizes a single motor drive timing belt system Tools required 4 mm handle Allen Check With the machine front cover removed check the belt tension for tautness by pressing it with the index fi nger Figures 6 1 6 2 Press the vertical center of the belt with approximately 2 lbs of pressure The belt should defl ect abo
34. tension The hand wheel may be rocked forward and reverse in these cases Page 4 HQ Sweet Sixteen Service Manual General Specifications Throat Dimensions Quilting Speed Needle System Needle Sizes recommended Hook System Bobbin Type Bobbin Case Motor Type Needle Positioning Electrical Power LED Power Consumption Hopping Foot Stroke Lift Needle Bar Stroke Take Up Stroke Lubrication main components Lubrication of hook 210 mm X 406 mm 8 25 X 16 Min 75spm Max 1500spm 134 135 X 7 12 80 20 125 Rotary Vertical M class bobbin Aluminum Class M Type MF Brushless DC Up and down walking stitch 90 264 VAC 47 63Hz 300W peak 2 25 W 5 mm 35 3 mm 73 mm Kluber Lube permanent Velocite 10 Texaco 22 HandiQuilter com Page 5 Assembly Torque Specifications The Torque Specifications apply to all internal and external fasteners in sizes 4 0 5 0 and 6 0 mm in general at ISO 4762 Screw class 8 8 The torque specifications are also generally classified as soft jointed and are listed according to size and placement in the machine 1 4 mm Allen socket head cap screws Class 8 8 2 5 Nm Uses 3 mm Allen tool Head frame bearing retainers front cover small 2 4 mm Allen set screw class 8 8 1 2 Nm Uses 2 0 mm Allen tool Tension assembly three hole thread guide motor pulley hook 3 5 mm Allen socket head cap screw class
35. tension will affect the stitch quality Reinstall the top tension parts on the split bolt and then the assembly into the machine front cover and tighten the set screw Radial postion When the top tension assembly is prop erly installed into the machine front cover the straight part of the take up spring before the loop will be straight up at 12 o clock or a little bit towards 11 o clock Figure 1 4 Position B on previous page Check that the top tension knob is not too loose on the split bolt and that it has some resistance so that it will not vibrate loose while sewing If a correction is necessary To correct remove the knob detent washer and cone spring adjust the split bolt by spreading with a fl at screwdriver until the knob has adequate resistance to keep its setting Caution The split bolt is hardened and if adjusted too much it may break The top tension assembly will then needs to be replaced Top Tension Assembly Part QM10198 Figure 1 6 Knob removed Figure 1 7 Detent washer and cone spring removed Figure 1 8 Tension discs removed two views Figure 1 9 Fully disassembled laid out in order of assembly Figure 1 10 Tension assembly split bolt 1 General Observation Continued 1 General Observation Continued Page 12 HQ Sweet Sixteen Service Manual Figure 2 4 Figure 2 1 A Figure 2 3 Figure 2 5 Figure 2 2 Figure 2 2 2 Removal of the Front Cover Tools Required 2 m
36. the table while tightening This will ensure that the hopping block mechanism contacts the appropri ate lifting lever and eccentric Con rm the ring of the foot is centered on the needle when the screw is re tightened Figure 7 3 Figure 7 4 Figure 7 5 Shown with front cover off Screw C Screw C access hole HandiQuilter com Page 25 Figure 7 6 7 Adjusting the Presser Bar Height Continued Adjusting the Hopping Foot The HQ Sweet Sixteen features the KinetiQuilt hopping mechanism allowing the hopping foot to move hop up down and dwell on the fabric when the needle is in the fabric This allows fabric to move through the machine similar to a normal sewing machine with a feed dog The dwell time allows for a longer hesitation of the hopping foot on the fabric and completion of the stitch cycle The results are better tension less needle breakage and increased hook life The hopping foot should be no more than 0 5 mm above the needle plate when the needle is in the lowest position It is permissible for the hopping foot to touch the needle plate The end user may have adjusted the hopping foot at the threads This usually can be corrected as stated below If a correction is necessary Hold the hopping foot loosen the jam nut screw the hopping foot shaft to the desired height Make sure the ring is centered on the needle Tighten the jam nut 8 mm open end wrench Note Make
37. the tool while tightening the hook may move throwing the settings off Tighten both screws tight with the 2 mm handle Allen tool Reset the loop lift clamp and gauge again to check that loop lift and needle distance are still correct Figure 9 8 Important Note If loop lift needle distance and needle height are not adjusted accurately the machine may skip stitches shred thread or not sew In other words it will have issues Figure 9 12 Hook screws without front cover Figure 9 11 Thread cutters Hook Screw Hook Screw Page 32 HQ Sweet Sixteen Service Manual 10 Adjusting the Needle Height Tools required 3 Fillister screwdriver Note This adjustment must be completed with the front frame cover on Important note Shown with cover off for illustration purposes only Check The needle height must be set so that when viewed from behind as shown and with the hook point fl ush with the right side of the needle the bottom of the hook point should be 1 0 mm above the top of the needle eye as shown in Figure 10 1 If a correction is necessary Lower the needle bar to its lowest position Insert a screwdriver through the access hole Figure 10 2 Hold the needle bar with your other hand to provide resistance against the adjustment so the needle bar will not fall down out of the driver Loosen the screw slightly so that the needle bar can be wiggled up or down to the correct position
38. uge as shown in the adjustment of loop lift and needle distance section Check loop lift If the machine requires a loop lift adjustment remove the stop fi nger and hook body from the machine Follow the steps below using the Needle Height Cylinder tool Figure 12 3 Figure 12 1 This adjustment can be completed with the front frame cover on or off The height of the needle must be set from the front side of the machine as shown The eye of the needle must align exactly to the groove as shown in Figure 12 6 on page 36 1 Install the cylinder tool with the at side up Figure 12 2 2 Rotate the cylinder tool so that the at side is down Figure 12 3 Adjusting the Needle Height Cylinder Tool Page 36 HQ Sweet Sixteen Service Manual Figure 12 4 12 Adjusting the Needle Height with Cylinder Tool Continued Figure 12 5 Figure 12 6 3 Bring the needle to the lowest point by rotating the hand wheel Figure 12 4 4 Slide the cylinder tool gently against the needle Figure 12 5 6 Reinstall the hook and set loop lift at 2 2 mm and reset needle distance See Adjustment of the Loop Lift and Needle Distance Section 5 Sight through the needle eye and compare the upper and lower levels of the eye with the cylinder tool groove Figure 12 6 If an adjustment is necessary loosen the needle bar driving clamp slightly and raise or lower the needle bar HandiQuilter com Page 37 13 Electronic Indicat
39. ut Proper belt tension provides for some belt fl exibility under light fi nger pressure but should not be so tight as to bind the machine Double check the tension by rotating and rocking the hand wheel Confi rm that there is no backlash or play between the belt teeth and any of the driven components Confi rm also that there is an immediate transfer of motion to all compo nents driven by the belt Important Do not over tighten the belt as this will make the machine too tight and diffi cult to turn and may cause other undesirable issues If a correction is necessary Insert a 4 mm handle Allen tool through the hole in the main frame casting Figure 6 2 Loosen the socket head belt tensioner screw Adjust the belt tensioner by press ing down on the tensioner and while holding down on the tensioner re tightening the belt tensioner screw Figure 6 2 Note This adjustment can only be made with the front cover off so the tensioner can be pressed down to set prop er belt tension Important Do not attempt to set with the front cover on as improper belt tension will result Important Note Ensure that the special washer with step is down into the tensioner bracket slot and fl at not tilted when tightened so the tensioner will not slip resulting in a loose belt Figures 6 3 6 6 Figure 6 1 Figure 6 2 Figure 6 3 Ensure that the special washer is at and in slot See Figures 6 4 6 5 6 6 Figure 6 4 Figur
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