Service Manual
Contents
1. drivin g gear Le m right FTE Setscrew 26 6 16 3 Replacing the thread trimming blade Changing the thread trimming knife 1 Remove the throat plate 2 Remove the setscrew of the thread trimming knife cover Remove the thread trimming knife cover the thread trimmer grasping unit and the thread trimming knife 3 Reversing the disassembly procedure assemble the parts Refer to the Caution below Setscrew of the thread trimming blade cover Thread trimming blade cover Caution When assembling the thread trimmer grasping unit put its pin into the slit in the thread trimmer link at the lower side of the mechanism section as illustrated below ea O Thread trimming cannot be performed if the pin has not entered the slit RI Put the pin of the thread grasping unit into the slit of the thread trimmer link 27 6 17 Longitudinal feed Preparation for adjustment Turn OFF the power switch Keep pressing both the reverse stitch button and thread trimming button simultaneousiv and turn ON the power switch The service mode screen appears on the displav Select to change over the screen to the sewing pattern for adjusting darning Adjustment procedure Sew a darning sewing pattern three times under the aforementioned sewing conditions Adjust the third pattern as shown Fig A by means of the feed adjusting button so that the lower end of the inner left li2. dS AV 13H AlddNS 1 21 LINOHIO H3MOd ASSV ASSV 144205 1 ASSV LINDYID 5 ASSV 82d ASSY TIV MS ASSV MS 1SO ASSV d dv dv dv dt YOLOW NIVIN ASSV INIS LL ASSV WLS ASSV WLS LN ASSV 22 Lolo WLS LL ASSY LINDYID UNMS ASSV amp quvos Lindulo 131 NO ASSY ex de 6 Adjustment 6 1 Adjusting the needle bar height Remove the face cover Adjustment value Distance from the bottom end of the pin inside needle bar surface to the top surface of the throat plate 19 mm When the needle is mounted the needle eye tilts rightward by 2 degrees Adjustment procedure 1 1 Select the straight stitch using the pattern selecting button Choose center needle position 2 Make a gauge needle by cutting a household needle x 1 to dimension A Fit the gauge needle into the needle bar 3 Prepare an appropriate metal plate of thickness B A 19 mm B Bring the needle bar to its lowest dead point Slightly loosen needle bar connecting stud setscrew as long as the needle does not slip off from the connecting stud Place the metal plate on the throat plate Move the needle bar up and down by hand to adjust so that the cut surface of the gauge needle aligns with the top surface of the metal plate Then turn the needle bar by two de
3. 21 6 11 Adjusting the needle thread tension 21 6 12 Vertical position of the needle threading hook 22 6 13 Adjusting the presser foot lifting switch 23 6 14 Adjusting the presser bar height e 23 BaF MOTOT DOI EE Odds 24 6 16 Automatic thread trimming HZL G210 25 6 16 1 Lateral position of the thread trimming mechanism base 25 6 16 2 Phase of the catching unit driving cam 26 6 16 3 Replacing the thread trimming blade 27 6 17 Longitudinal feed e eee cc cm 28 1 HR P 29 6 19 Service mode 22 222 0 30 6 20 1 Service mode screen 30 5 20 2 Service mode items and descriptions 30 N CAUTION Be sure to observe the following to protect against a fire electrical shock injurv or damaged components Be sure to unplug the machine before disassembiv assembiv or adjustment of the machine sure to carefully prevent electric cor
4. COMPUTER SEWING MACHINE HZL G Series SERVICE MANUAL 6 2 Adjusting the needle entry point Remove the face cover Adjustment procedure 1 Select the straight stitch using the pattern selecting button Choose center needle position 2 Assemble a needle 14 into the needle bar loosen the setscrew in the eccentric collar and adjust the feed bar eccentric collar so that the needle meets the center of the needle slot in the throat plate when it reaches the top face of the throat plate by turning the hand wheel Setscrew aS AN amp 8 Sa w w S kum L LAT Feed bar eccentric collar 2 E C 6 3 Feed dog height O Do not remove the throat plate Adjustment procedure 1 Set the amount of feed to O zero 2 Turn the hand wheel to bring the feed dog to its highest dead point 3 Using a tapered head slotted screwdriver turn shaft a on the left side and shaft b on the right side 4 Adjust the feed dog height so that the front and rear ends of the feed dog are spaced 1 0 0 1 mm from the throat plate surface Adjust the rear end height of the feed dog with shaft a and front end height with shaft b Shaft a 4 5 2 1 Specifications of HZL G Series 1 2 Search by trouble related to mechanical components 3 3 P
5. Hook cover release button 4 Disassembling the machine covers 1 Top cover To remove the top cover bow the hinge section of the right side of the cover 2 Face cover Remove setscrews from the cover Then remove the cover 3 Throat plate Remove setscrews from the throat plate Then remove the throat plate 4 Spool cover Remove setscrew from the thread tension cover Remove the thread tension cover Remove setscrews to from the spool cover Pull out the cable of bobbin winder motor from the microcomputer PCB Loosen the setscrew of the grounding wire Remove the grounding wire Remove the spool cover from the main unit of the machine paying attention to the base tension Setscrew of the grounding wire Microcomputer PCB 5 Bottom cover of the free Remove setscrews and from the bottom cover of the free arm arm Remove the bottom cover 6 Bed cover Remove setscrews to B from the rubber cushion of the bed cover Remove setscrew from the bed cover Remove setscrews B and B from the metal plate the bed cover 7 Upper cover of the free Remove setscrew from the upper cover of the free arm arm Remove the cover 8 Face plate cover O Remove setscrews B from the face plate cover Remove the face plate cover O Remove setscrews and 6 from the front panel Put a thin screwdriver in the notch in the r
6. mm by turning the thread tension float adjusting screw 192 6 10 3 tension opening amount Remove the face cover the thread tension cover and the spool cover Adjustment procedure 1 Raise the presser foot lifting lever 2 Adjust the base tension opening amount to 1 mm by turning the base tension adjusting screw Base tension adjusting screw Thread tension disk float adjusting Tension disk float adjusting screw The pretension disk float adjusting screw and the tension disk float adjusting screw can be turned without loosening the nuts 20 6 10 4 Adjusting the disk opening amount at the time of thread HZL G210 Adjustment procedure 1 Lower the presser foot lifting lever 2 Select No 9 meaning tension release of the service mode 3 Loosen the locknut Turn the adjusting nut to adjust the retracting amount of the thread tension releasing link plate so that the top end of claw of the opening arm is aligned with the marker dot on the thread tension releasing arm 4 At this time check to be sure that the opening amounts of the pretension disk thread tension disk and base tension are same as those provided when the presser foot lifting lever is raised Opening arm Align with the marker dot Thread tension releasing arm releasing link plate Caution After adjustment of the opening amounts of each tension control part lower the presser foot lifting lever or return
7. STI A straight line can be sewn with the amount of feed determined by the number of pulses The straight stitch is selected as the sewing pattern The number of pulses of feed can be adjusted using the feed amount adjusting button The straight stitch pattern can be sewn with the feed amount determined by the adjusted number of pulses 15 FEED PULSE TEST2 Zigzag stitch can be sewn with the amount of feed determined by the number of pulses The zigzag stitch is selected as the sewing pattern The number of pulses of feed can be adjusted using the feed amount adjusting button The zigzag stitch pattern can be sewn with the feed amount determined by the adjusted number of pulses 16 Reserved 17 WIND PWM Output value of PWM for the bobbin winder is set The PWM output value can be adjusted using the zigzag width adjusting button It is possible to make adjustment while rotating the bobbin winder under the service mode The larger the value is the faster the speed becomes The adjustable range of PWM output value is 15 0 to 79 1 Default is 54 0 Adjustment is made in increments of 0 5 Note that the indication is given in increments of O 1 18 Reserved 19 Reserved e JUKI CORPORATION SEWING BUSINESS UNIT 2 11 1 TSURUMAKI TAMA SHI TOKVO 206 8551 JAPAN PHONE 81 42 357 2371 FAX 81 42 357 2380 http www juki com Copyrig
8. al position after completion of threading 11 Automatic lock stitch When the backtacking switch is turned ON Straight stitch Three stitches are sewn in normal direction and three stitches are sewn in reverse direction at the beginning and end the reverse switch is turned ON of sewing Amount of feed Same with the preset amount of feed Other patterns Zero feed is inserted and one each stitch is sewn in the normal and reverse directions at the beginning and end the reverse switch is turned ON of sewing Amount of feed Fixed at 0 6 mm 12 Buttonholing Auto return type full automatic buttonholing Buttonholing size detection 2 Search by trouble related to mechanical components Phenomenon Item to be checked Faulty thread tension 6 8 Position of the hook rotation stopper plate 6 9 Adjusting the bobbin thread tension 6 10 2 Tension disk opening amount 6 10 3 Base tension opening amount 6 11 Adjusting the needle thread tension Stitch skipping 6 1 Adjusting the needle bar height 6 2 Adjusting the needle entry point 6 5 Feed timing 6 6 Timing between the needle and the hook 6 7 Clearance between the needle and the blade point of hook Thread breakage 6 1 Adjusting the needle bar height 6 6 Timing between the needle and the hook 6 8 Position of the hook rotation stopper plate Hitch stitch 6 2 Adjusting the needle entry point Faulty material feed 6 3 Feed dog heig
9. aligned with the marker line Then tighten the adjusting screws Adjusting screw Thread trimming mechanism base Align the rear end of the catching unit with the marker line Adjusting screw Catching unit Caution If the thread trimming mechanism base is inclined a malfunction can be caused Be sure to press the mechanism base toward P direction so that it will not tilt 25 6 16 2 Phase the catching unit driving cam O Carrv out the adjustment with the power OFF Adjustment procedure 1 Loosen setscrews and B 2 Turn the cam driving shaft in the direction of the arrow as shown in Fig A and the catching unit driving cam will rotate in the direction as shown in Fig B Turn the cam until it comes in contact with the pin 3 Turn the intermediate gear in the direction of the arrow as shown in Fig A until it comes in contact with the pin See Fig C 4 In the aforementioned state securely tighten setscrew while removing a thrust play between the cam driving shaft and the cam driving gear right as shown Fig D 5 The aforementioned step connects the shaft and the gear Then turn the intermediate gear so that setscrew is brought to the front side Then securely tighten setscrew o ll uM ges Turn the gear until it L K comes in contact with Turn the the cam until it comes in contact with the pin Catching unit b Intermediate driving cam gearshaft Setscrew 6 l l
10. ds from being caught coated surfaces from being damaged as well as wrong wiring during assembly sure to use the proper genuine parts when changing any of the machine parts 1 Specifications of HZL G Series 1 Power switch 220 240V AC common to 50 60 Hz 120V AC common to 60 Hz 2 Power consumption 65 3 Dimensions and weight Dimensions Main unit 445 width x 210 depth x 290 5 height mm Case set 510 width x 257 depth x 305 height mm Weight Main unit G210 9 4kg 110 8 9 kg 4 Revolution control Slide style speed control Straight stitch 80 900 sti min SPM Pattern stitch 80 750 sti min SPM Reverse stitch 80 110 sti min SPM 80 900 sti min SPM when the speed controller is used Bobbin winding 1500 3000 sti min RPM Low speed start 80 110 sti min SPM approx 1 second only when the power switch is turned ON Foot controller Even when the foot controller is used the speed control function by means of the slider is effective To stop the machine either release the foot controller or press start stop button The number of revolutions is controlled in the way same with the case of the slide speed control Thread trimming switch Press heel side of foot controller Safety control When the motor shaft of the sewing machine is accidentally constrained the power supply to the motor is stopped within two seconds When the motor is overheated the built in thermal swi
11. ead point 4 Turn the hand wheel further to gradually lift the needle bar until point C where the needle center is aligned with the tip of blade point of the hook is reached 5 At this time check to be sure that the distance D from the tip of blade point of the hook to the upper end of the needle eye is 3 1 to 3 3 mm If this distance is not correctly provided carry out the following adjustment Adjustment procedure 1 Loosen the setscrew in the hook driving gear which is not visible from underside of the sewing machine when the needle center aligns with the tip of blade point of the hook 2 Select the straight stitch and the right needle position Move the hook driving gear in the rotational direction to adjust distance D of 3 1 to 3 3 mm is provided between the tip of blade point of the hook and the upper end of the needle eye when the needle bar is lifted by 1 6 mm from the lowest dead point by turning the hand wheel by hand At this time the backlash between the hook driving gear and the gear on the hook side may change depending on the location of the hook driving gear on the hook driving shaft Adjustment should therefore be carried out with the visible setscrew temporarily tightened while carefully observing the hook driving gear in both the rotational direction and axial direction Adjust the backlash to 0 2 to 0 7 mm on the periphery of the rotating hook 3 After confirming the timing between the needle and hook is correctly adjust
12. ed securely tighten both setscrews Caution After adjustment of the hook the hook race surface and the bobbin case holder may be stained with dirt oil or grease Wipe them off with alcohol where necessary If those parts are left stained chattering or thread slip off noise of the bobbin case holder can occur Backlash on the periphery of the rotating hook 0 2 to 0 7 mm Rotating Hook driving gear E e c a H Q dy Smaller Backlash 6 7 Clearance between the needle and the blade point of hook Remove the face cover and the throat plate Adjustment procedure 1 Loosen screw Adjust the clearance between the needle and the blade point of the hook to 0 02 to 0 07 mm by turning adjusting shaft 0 02 to 0 07 mm Adjusting the balance of the clearances at the right and left needle entry points 1 Select the zigzag pattern and set the zigzag width to 7 mm Adjust the balance of the clearances provided between the needle and the blade point of the hook at the right and left needle entry points Left needle position Right needle position Left needle position Right needle position If the clearance is larger at the right needle If the clearance is larger at the left needle entry point shift to the right entry point shift to the left Adjustment procedure 1 Select No 2 of the service mode 2 Gradually turn adjusting shaft to find a position where the n
13. eedle deviates slightly Now temporarily tighten screw b Slightly loosen setscrew Adjust the lateral balance of the needle bar by slightly moving right left adjuster while carefully listening to the noise produced when the needle deviates at the right and left needle entry points Then securely tighten setscrew 4 Additionally turn shaft and securely tighten screw at the position where the needle does not deviate 5 Lightly tap P section with fingers If you hear a needle deviation noise at the right and left needle entry points the optimum clearance is provided between the needle and the hook 22 BX a 22 TAL Q JLN Ga a section 6 8 Position of the hook rotation stopper plate O Remove the throat plate Adjustment procedure 1 When the bobbin case holder is placed inside the rotating hook loosen the setscrew and determine the longitudinal position of the rotation stopper plate so that the projection of the bobbin case holder and the leaf spring of the rotation stopper plate are located as illustrated in the enlarged partial view To adjust the lateral position of the rotation stopper plate press the plate in the right direction bv the amount of plav and secure with the setscrew The hook race surface and the bobbin case holder be stained with dirt oil or grease Wipe them off with an alcohol soaked cloth where necessary If those parts are left stained chattering or thread slip off n
14. grees of an angle as illustrated in the sketch below 6 Temporarily tighten needle bar connecting stud setscrew and reconfirm that the needle bar is correctly adjusted Then securely tighten the setscrew Adjustment procedure 2 1 Assemble a household x 1 needle 14 into the needle bar bring the needle bar to its highest dead point Move the needle bar in the same way as described in procedure 1 to adjust the needle bar height so that the needle tip is spaced 15 5 mm from the top face of the throat plate Lowest dead point Highest dead point HAx1 714 Throat plate qu 6 4 Timing belt Remove the front panel and the microcomputer PCB Adjustment procedure 1 Loosen the setscrew in the idler mounting base and loosen the timing belt 2 Turn the hand wheel to bring the needle bar to its lowest dead point 3 Turn the hook driving shaft to bring the feed dog to its lowest dead point 4 Carefully keeping the condition described in steps 2 and 3 set the timing belt on the hook driving shaft pulley by temporarily tightening the setscrew in the idler mounting base so that the setscrew No 2 in the pulley is brought to just underside of the pulley 5 Applying 1 96 0 29 force to the idler by means of a spring scale securely tighten the setscrew Push the middle part of the screw with the spring scale Y Setscrew of the idler mounting base ur The setscrew No 2 is located ju
15. h adjusting button The adjustable range of the sliding amount is 4 to 4 Adjustment is made in increments of 1 OVERCASTING Adjust the needle entry points on the left side of the blind stitch Slide the needle entry points toward the needle throwing direction entirely by the specified number of pulses The sliding amount can be adjusted with the zigzag width adjusting button The adjustable range of the sliding amount is 4 to 4 Adjustment is made in increments of 1 BLIND STITCH 30 Description THREAD TRIM CHECK Thread trimming condition can be checked Perform thread trimming halfway by using the OK button From this condition manually turn the main shaft to carry out the thread trimming sequence in order Tension release Bring the disks to the floating condition Operate the OK button and the disks will float 10 11 STRAIGHT 500STI MIN LCD FLASH TEST The maximum sewing speed is 500 sti min SPM when the straight stitch pattern is selected Indications on the LCD can be checked Every time the OK button is pressed the LCD lights up entirely and goes out entirely 12 For adjusting the thread trimming mechanism base Press the OK button to carry out thread trimming partway When the thread trimming operation stops check the lateral position of the thread trimming mechanism base 13 Reserved 14 FEED PULSE TE
16. ht 2011 JUKI CORPORATION rights reserved throughout the world 40113428 2011 09
17. ht 6 14 Adjusting the presser bar height Contact between needle and throat plate or hook 6 2 Adjusting the needle entry point 6 5 Feed timing 6 6 Timing between the needle and the hook Faulty pattern shape Faulty automatic thread trimming 6 3 Feed dog height 6 17 Longitudinal feed 6 10 4 Adjusting the disk opening amount at the time of thread trimming 6 16 1 Lateral position of the thread trimming mechanism base 6 16 2 Phase of the catching unit driving cam 6 16 3 Replacing the thread trimming blade Faulty operating noise 6 4 Timing belt 6 15 Motor belt Fault buttonholing 6 18 Buttonhole Needle threader 6 12 Vertical position of the needle threading hook Fails to start sewing 6 13 Adjusting the presser foot lifting switch Principal parts Thread tension adjustment dial Speed controller Spool cap large Spool pin Face plate cover Bobbin winding shaft Needle up down button LCD Screen Presser foot lifting lever Reverse stitch button Thread cutter Operational buttons Thread trimming button Start stop button Auxiliary bed accessory case Drop feed knob Power switch Foot controller jack Machine socket inlet Buttonholing lever Threading lever Presser foot releasing button Presser foot holder setscrew Needle Needle setscrew Presser foot holder Feed dog Presser foot Throat plate Hook cover
18. ily tighten the setscrew If the needle threading hook position is too high gt Move the needle bar guide downward and temporarily tighten the setscrew Adjust the needle threading hook carefully checking its position with respect to the needle eye When the needle threading hook enters and exits from the needle eye the needle should never be bent by the hook If the needle threading hook position deviates to the right or left correct the bend in the needle threading hook with the tip of a thin screwdriver or change the needle threading hook with a new one 5 When the needle threading hook is correctly positioned fully tighten the setscrew Needle bar guide setscrew E E 5 9 e D 6 13 Adjusting the presser foot lifting switch gt Remove the face cover the thread tension cover and the spool cover Adjustment procedure 1 Loosen the adjusting screw of the presser foot lifting switch Adjust the position of the presser foot lifting switch so that the sewing machine stops when the presser foot lever is raised by 5 mm or more while the machine is in operation Adjusting screw of the presser foot lifting switch 6 14 Adjusting the presser bar height O Remove the frame cover Adjustment procedure 1 Assemble the standard presser foot in the presser foot holder Raise the presser foot lifting lever 2 Loosen the setscrew of the presser bar position bracket Adjust the distance from the top surface of the throat plate t
19. ising section under the arm and pry off the front panel and hook of the rear panel Opening the right side of the front panel in the direction of the arrow tap section with your hand to remove hook located at the bed surface Lastly remove hook located at the lower side of the machine jaw Remove connectors for SUMI card start switch and LED lamp from the microcomputer PCB when necessary 9 Front panel E SV ta 1 fl 2 Ss TAN Ag M 10400533 M LEER M Remove setscrews B amp and from the rear panel 10 Rear panel Remove the rear panel with the presser foot lifting lever raised 5 connection diagram Microcomputer CN2 CN3 CN5 LED2 184 Connector Terminal Destination No 5V Bobbin winder switch GND Bobbin winder motor 29V Bobbin winder motor Presser foot lifting switch GND GND ON HAND LED CIRCUIT BOARD 2 Not installed BOBBIN WINDING MOTOR 5V 5V Motor pulse 51 52 53 MAIN SHAFT DETECTION CIRCUIT BOARD FLASH MEMORY INTERFACE 5V FOR FACTORY 5V GND GND CONTROLLER RESERVE Not installed CONTROLLER_SOCKET Ie OD oy A OINI e AITON INI eA OINI e Destinati
20. ne and the lower end of the right line of the replicating part of the pattern lie on the same line reference error 0 1 mm Refer to Fig B for the direction of the adjustment Lengthwise feed adjustment value Direction of adjustment of lengthwise feed In the case the lower end of the right line is higher than the lower end the inner left line Adjust in direction In the case the lower end of the right line is lower than the lower end the inner left line gt Adjust in direction Feed adjusting button 28 6 17 Buttonhole Adjustment procedure Lower the buttonholing lever to bring it in contact with the projecting part of the buttonholing foot In this state loosen the screws and adjust the buttonholing switch so that its standbv side contact point is placed at the center of the range of movement of the lever The stitches at the beginning of sewing must be hidden under the bartacking part and circular part The side stitches at the end of sewing must not overrun from the bartacks or the former must not be spaced from the latter Center of the range of movement Range of movement the standbv side 29 6 19 Service mode 6 19 1 Service mode screen How to select the service mode 1 Turn the power switch OFF In this state turn the power switch ON with the two buttons see the description below held pressed simultaneously HZL G210 Re
21. o the bottom face of the standard presser foot to 640 3 mm At this time check the direction of the presser bar so that the standard presser foot is in parallel to the feed dog groove and so that the needle hole in the throat plate is nearly aligned with the slot in the standard presser foot Setscrew of the presser bar position bracket 23 6 15 Motor belt O Remove the front panel Adjustment procedure 1 Set the motor timing belt to the motor pullev and the motor shaft pullev 2 Adjust the motor bracket so that the belt deflection amount becomes 6 1 mm when pressing the center of the belt with a force of 0 98 N After completion of adjustment tighten the setscrew in the motor bracket Motor pulley Motor bracket Setscrew of the motor bracket Motor shaft pulley Setscrew of the motor bracket 24 6 16 Automatic thread trimming HZL G210 6 16 1 Lateral position of the thread trimming mechanism base Adjustment procedure 1 Turn the power switch OFF Then turn the power switch ON with the reverse stitch button and the thread trimming button held pressed simultaneousiv 2 The Service mode screen is displayed Select 12 3 Press the automatic back tack thread trimming button to activate the thread trimming mechanism 4 In the aforementioned state loosen two adjusting screws and move the thread trimming mechanism base laterallv with pressed in P direction until the rear end of the catching unit is
22. oise of the bobbin case holder can occur Adjust so that the projection and Setscrew leaf spring are aligned with this line Enlarged partial view 6 9 Adjusting the bobbin thread tension O Remove the throat plate Adjustment procedure 1 Position the bobbin case holder and a tension gauge as illustrated in the sketch below Using SHAPPE Span thread 60 adjust the bobbin thread tension to 0 13 0 02 with the adjusting screw At this time carefully prevent the bobbin thread from coming in contact with the throat plate or other related parts Adjusting screw Adjusting screw 6 10 Adjusting the disk opening amount 6 10 1 Adjusting the thread tension release adjusting plate Remove the face cover the thread tension cover and the spool cover Adjustment procedure 1 Raise the presser foot lifting lever 2 Loosen the adjusting screw and adjust the thread tension release adjusting plate so that the top end of claw of the opening arm aligns with the marker dot on the thread releasing arm Thread tension release adjusting plate lt RQ Thread releasing arm Opening arm Adjusting screw Align with the marker dot 6 10 2 Tension disk opening amount C Remove the face cover thread tension cover and the spool cover Adjustment procedure 1 Maximize the tension with the thread tension adjustment dial Raise the presser foot lifting lever 2 Adjust the clearance between tension disks A and B to 1
23. on CN10 POWER SUPPLY RELAY LEAD WIRE 1 30V 2 30V 3 NC 4 GND 5 GND CN11 MAIN MOTOR 1 MAIN MOTOR 29V 2 MAIN MOTOR CN12 THREAD TRIMMING STM 1 A 2 A 3 B 4 B CN13 FEED STM 1 A 2 A 3 B 4 14 NEEDLE THROW STM 1 A 2 A 3 B 4 15 THREAD TRIMMING STM ORIGINAL 1 POINT CIRCUIT BOARD 2 Detection signal 3 GND CN16 SW SLIDE VOLUME CIRCUIT BOARD 1 LED G 2 LED 3 Thread trimming needle up down switch 4 Heverse stitch switch 5 S S switch 6 7 5V 8 Speed control variable resistor 9 GND CN17 UNDER ARM LED CIRCUIT BOARD Not installed CN18 ON HAND LED CIRCUIT BOARD 1 1 5V PANEL CIRCUIT BOARD 10 Switch strobe 5V LCD signal 3 3V PU LCD signal 3 3V GND NC Switch data NC GND E 3 5 3 8 50 34 00 i400 i500 i500 Display A LI LI LI L LI LI LI LI LI LI U LI U LI U LI O LI U o al o 40 PANEL CIRCUIT BOARD tof dol o P N 40105240 s EN FR LU LI ALAKA To be connected to CN19 of microcomputer PCB Power Destination Check CN1 POWER SW AC input CN2 POWER SUPPLY RELAY LEAD WIRE 1 2PIN 29V 4 5PIN GND FG 146 H3MOd Connection block diagram zl WSv avouav uod M3TIOHINOO 1004 MS H3MOd ASSV MddnS ZNO
24. rincipal parts Ent 4 4 Disassembling the machine covers 5 5 PCB connection diagram s sssnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn 9 RETURN TIE 13 6 1 Adjusting the needle bar height 2 222 2 2 1 1 13 6 2 Adjusting the needle entry point 14 6 3 Feed dog 14 TIMING sesos E 15 6 9 Feed i 15 6 6 Timing between the needle and the hook 16 6 7 Clearance between the needle and the blade point of hook 17 6 8 Position of the hook rotation stopper plate 18 6 9 Adjusting the bobbin thread tension 18 6 10 Adjusting the disk opening amount 19 6 10 1 Adjusting the tension release adjusting plate 19 6 10 2 Tension disk opening amount 2 19 6 10 3 Base tension opening amount 20 6 10 4 Adjusting the disk opening amount at the time of thread trimming Aaa EETA L m
25. st underside of the hook driving shaft pulley 6 5 Feed timing After checking the feed dog height and the needle bar height carry out adjustment of the feed timing Adjustment procedure 1 Assemble a HA x 1 needle 714 into the needle bar 2 Loosen setscrew No 2 in the hook driving shaft pulley 3 Loosen setscrew No 1 in the hook driving shaft pulley Adjust the pulley so that the lower end of the needle eye in the descending needle 714 is aligned with the top surface of the throat plate when the top face of the descending feed dog is aligned with the top surface of the throat plate by turning the hand wheel toward you After adjustment tighten the setscrew No 2 4 Turn the main shaft by one revolution to confirm the timing The lower end of the needle eye in needle Setscrew No 2 14 aligns with or is 1 mm or less above the top surface of the throat plate Top surface of the feed dog aligns with the top surface of the throat plate Setscrew No 1 6 6 Timing between the needle and the hook Remove the throat plate the bed cover and the bottom cover of the free arm Method for checking 1 Check to be sure that the needle entry point and needle bar height are correct 2 Select the straight stitch Select the right needle position by using the zigzag width adjusting dial The needle entry point is shifted to the rightmost side 3 Now turn the hand wheel by hand to bring the needle bar to its lowest d
26. tch stops the power to the motor Note that the machine can be restarted once the motor spontaneously cools down er S 5 Stop position Upon finishing sewing the machine stops according to the preset needle stop position with its needle up or down Upon finishing reverse stitching the machine stops with its needle down In the case the machine is started with the presser foot lifting lever raised the machine stops with its needle up Needle moves down when the machine has preset so that the needle stops at its up position and needle up down button is pressed Needle moves up when the machine has preset so that the needle stops at its down position and needle up down button is pressed In the case of fault the machine stops immediately stop position varies 6 Zigzag width Max 7 mm depending on the pattern selected 7 Amount of feed The amount of feed is changed in increments of 0 2 mm by the stitch length adjusting dial For the parallel parts of a buttonhole and satin stitches the amount feed is changed in increments of 0 1 mm Default setting 2 4 mm for straight stitching 8 Pattern selection Selection of three different kinds of patterns Selection of number shifts Segment type LCD ILI 1 9 Number of patterns 180 10 Automatic threading device The hook section makes a turn bv lowering the threading lever and automaticallv returns to its origin
27. the thread tension releasing link plate to its home position to make sure that those tension control parts are closed 6 11 Adjusting the needle thread tension Remove the thread tension controller cover Adjustment procedure 1 Raise the presser foot lifting lever 2 Turn the thread tension adjustment dial to bring its AUTO section to the top 3 Prepare SHAPPE Span thread 60 and a tension gauge Thread the base tension and the tension disk 4 Lower the presser foot lifting lever Turn the adjusting nut to adjust the tension so that the tension gauge gives a reading of 0 49 to 0 59 N Adjusting nut 6 12 Vertical position of the needle threading hook O Remove the frame cover Adjustment procedure 1 Assemble a household x 1 needle 11 into the needle bar 2 Turn the hand wheel to bring the needle bar near its highest dead point and stop the hand wheel when the needle bar reaches the location where the setscrew in the needle bar guide is visible 3 Lower the threading lever to its lowest dead point Check whether a clearance of 0 to 0 1 mm is provided between the top end of the needle threading hook and the upper end of the needle eye If the clearance is not O to 0 1 mm the needle may not be threaded depending on the size of the needle used 4 Fit a hexagonal wrench on the needle bar guide setscrew to loosen it slightly If the needle threading hook position is too low gt Move the needle bar guide upward and temporar
28. verse stitch button and thread trimming button HZL G110 Reverse stitch button and needle up down button 2 The service mode screen appears on the display Select the number corresponding to the service item to operate select the corresponding number advance or return the item one by one by means of the pattern selection button e Q OK button OK button HZL G210 HZL G110 6 19 2 Service mode items and descriptions ltem name Description The version is displayed when the sewing machine enters the Service Mode Press the OK button to display the model 210 or 110 Select the straight stitch pattern and set the amount of feed at O zero FEED 0 MODE Press the OK button to initialize the pattern to set the amount of feed to zero 0 Select the fagoting pattern FAGOTT Set the zigzag width at 7 0 mm The fagoting pattern can be sewn Version check mode Select the darning pattern and adjust the lengthwise feed DARNING Darning pattern can be sewn with the initial value Select the zigzag pattern ZIG ZAG em Zigzag pattern can be sewn with the initial value Select the Kikkou pattern KIKKOU Kikkou pattern can be sewn with the initial value Adjust the needle entry point for overcasting Slide the needle entry points toward the needle throwing direction entirely by the specified number of pulses The sliding amount can be adjusted with the zigzag widt
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