Brother BES-1241BC Instruction Manual Download Page 147

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Chapter 7 Maintenance

BES-941BC • BES-1241BC

145

Turn on the power of the sewing machine and measure the out-of-step limit of the lower shaft
module in the test mode.

Replace the lower shaft module if it cannot be repaired even if being checked in the test
mode.

Install the lower shaft's case cover and secure it with polyester tape.

* Use heatproof tape to secure it if polyester tape is not available.

10. Reassemble the module by reversing this procedure.

11. Carry out the thread trimming test for checking.

Summary of Contents for BES-1241BC

Page 1: ...ead this manual before using the machine Please keep this manual within easy reach for quick reference NINE NEEDLE FOUR HEAD ELECTRONIC EMBROIDERY MACHINE TWELVE NEEDLE FOUR HEAD ELECTRONIC EMBROIDERY MACHINE BES 941BC BES 1241BC ...

Page 2: ...tos logos etc owned by other companies or persons is illegal The use of such materials without the permission of their owners may result in criminal or civil liability This manual may be subsequently modified without prior notice Brother Industries Ltd shall assume no responsibility for any consequences of using this manual ...

Page 3: ...sure safe operation of this machine and to prevent accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications Symbols DANGER This symbol indicates something that you should be careful of The picture inside the triangle indicates the nature of the caution that must be taken For example the symbol at left means beware of injury This sym...

Page 4: ...m the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury CAUTION Be sure to wear protective goggles and gloves when handling the lubricating oil or grease so that no oil or grease gets into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or grease un der any circumsta...

Page 5: ...d for any applications other than sewing Turn off the power switch at the following times otherwise the machine may operate if the start switch is pressed by mistake which could re sult in injury When threading the needle When replacing the bobbin and needle When not using the machine and when leav ing the machine unattended Do not get on the table Table may be damaged Secure the machine with the ...

Page 6: ...cover PELIGRO Un voltage non adapté provoque des blessures Pour ouvrir cette plaque couper le contact general de la machine et debrancher le cable d alimentation Un voltaje inadecuado puede provocar las heridas Antes de abrir esta tapa desconecte la máquina y desenchufela de la red 3 CAUTION ATENCION ACHTUNG ATTENTION Nicht auf den Tisch stehen Do not get on the table No montez pas sur la table De...

Page 7: ...5 BES 941BC BES 1241BC 2 1 7 1 6 3 4 5 7 3 2 Belt cover Finger guard BES 941BC ...

Page 8: ... dusty place Do not place it on cloth Do not bend the disk Do not put things on the disk Store it in the case immediately after using it to protect it from dust and damage Do not bring disks near magnetic matters such as magnetic screwdriver or the back side of the programmer Do not use floppy disks under high humidity Do not store floppy disks under direct sunlight Avoid contact with solvent or d...

Page 9: ...ion to write data Protecting data in floppy disks Write protection is available for a floppy disk to prevent undesired data deletion A write protected disk is read only It is recommended to provide write protection for disks which contain important data To do so slide the write protect notch to open the slot as shown below ...

Page 10: ...cedures of starting up the machine Chapter 2 Embroidering Procedures Provides explanations on the operation panel and briefly reviews the flow of embroidering processes Chapter 3 Selection of Data and Embroidering This Chapter describes procedures of reading sewing data and sewing Chapter 4 Editing of Embroidering Data Explains how to edit the embroidery data Chapter 5 Setting This Chapter describ...

Page 11: ...rovides information on error codes and action to be taken Chapter 10 Troubleshooting Provides troubleshooting for the machine Connection and Installation of Optional Equipment Describes connections between the machine computer and optional equipment available ...

Page 12: ...n Composition Initial Screen Starting Sewing Selection of Embroidery data Operation page 72 page 59 STOP Canceling of Sewing Thread trimming Setting of Needle Bars page 92 Hoop Retract Area Check Editing of Embroidery data page 77 ...

Page 13: ...11 BES 941BC BES 1241BC Setting of thread breakage sensor page 94 Setting of Machine page 97 ...

Page 14: ...2 Replacement of Bobbin 37 4 3 Replacing and Selecting Needle 38 4 4 Attachment of Embroidery Hoop and Frame 39 4 5 Flat Frame Every Other Head Operation 45 4 6 Adjustment of Thread Tension 46 Chapter 2 Embroidering Procedures Functions of Operation Panel 50 Operation Panel 50 Switches at Machine Heads 53 Switches on Tension Plate 53 Flowchart of Preparation for Embroidering 55 Turn on the Machine...

Page 15: ...9 Enlargement and Reduction 80 Mirror 82 Repetition 84 Other Editing 86 Chapter 5 Setting What Can the Machine Do 90 Setting of Needle Bars 92 Thread Breakage Sensor 94 Setting of sensor validity invalidity 94 Thread Breakage Sensitivity 94 Automatic Step Back 95 Setting of Lower Thread Counter Stitch Counter 96 Setting of Machine 97 Embroidery Hoop 97 Speed Range 98 Speed of Each Speed Range 99 S...

Page 16: ...Versions 122 Chapter 6 Operation of Machine 1 Operating Procedures 124 1 1 Power Source 124 1 2 Preparation for Embroidering 124 2 Machine Stop 125 2 1 Stopping the Machine 125 2 2 Resetting Machine Stop 125 2 3 Emergency Stop of the Machine 125 2 4 Resetting Emergency Stop 125 3 Measures against Thread Breakage 126 3 1 Remedies 126 3 2 Mending 127 4 Jog Embroidering 129 5 Hoop Feed Position 129 6...

Page 17: ... Adjustment of Clearance Between Needle and Rotary Hook 153 4 Adjustment of Timing Between Needle and Rotary Hook 154 5 Adjustment of Presser Foot Height 155 6 Adjustment of Thread Trimmer 156 6 1 Attaching the Fixed Knife 156 6 2 Checking the Movable Knife Position 156 7 Adjusting the Belt Tension 158 Chapter 9 List of Error Message Chapter 10 Troubleshooting Mechanical Section 166 Electrical Sec...

Page 18: ...16 BES 941BC BES 1241BC ...

Page 19: ...Chapter 1 Preparation of Embroidery Machine ...

Page 20: ...ngth 0 1 12 7 mm minimum pitch 0 1 mm 3 5 2DD floppy disk Tajima format Storage medium 3 5 2HD floppy disk the equivalent to Tajima format 3 5 2DD floppy disk Barudan FDR FMC format 3 5 2DD floppy disk ZSK format 3 5 floppy disk brother ECS format Thread trimming Automatic thread trimmer Needle thread breakage Needle thread breakage detector Power supply Single phase 200 V 220 V 230 V 240 V 1 7 kV...

Page 21: ...itch Thread tension dial Cotton stand Thread guide A Thread tension switch Thread guide B Thread guide C Thread tension dial Operation panel Pulley Control box Power switch Head switch Leg Thumb bolt Pulley cover Fluorescent lamp switch Rear Pulley cover Fluorescent lamp switch Rear Fluorescent lamp 2 Names of Machine Components BES 941BC BES 1241BC The machine heads are numbered 1 to 4 from the r...

Page 22: ...m set R 4 Other embroidery hoops in different sizes Tubular round arm set L 4 Sash frame assembly Other Tajima embroidery hoops that can be used with BAS 412A and 416A Cap frame 4 Cap frame drive assembly 4 Base frame set 8 Set frame base set 1 Others F table assembly Bobbin winder Parts for boring Accessories Standard Accessories Optional Accessories ...

Page 23: ... ure to do so may cause the embroidery machine to malfunction Be sure to connect the ground If the ground connection is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur Secure the machine with the casters when in stalling it so that it will not move by placing the leveling seat on the sound floor 3 Installation After installati...

Page 24: ...ace two rectangular bars on the four L shaped steels on the bottom of the machine steel frame Loop four ropes around the bars and lift the machine Note When lifting the machine make sure that the ropes do not contact the machine table or the tension plate Rope L shaped steel Rectangular bar ...

Page 25: ... q The leveling plates e should be placed above the cushion sheets respectively 2 Secure the four level adjusters q on the ground using the nuts r so that the machine will be stable Note If the floor is not strong enough the embroi dery machine may be rocked during opera tion In such a case it is recommended that a secure base of concrete be placed below the embroidery machine r q e w ...

Page 26: ... bracket collar t against the change case base y on the left and tighten the bolt q and set screw 0 Check that needles at needle bar No 1 and 9 are inserted into the needle plate holes smoothly Note Check that the connecting shaft u does not have backlash in the horizontal direction Never loose the bolt i of the change bracket coller r If this bolt is loosened the change bracket coller r will be d...

Page 27: ...r o against the change case base u and tighten the bolts t and set screw 0 Check that needle bar No 1 and 12 are inserted into the needle plate holes smoothly Notes Check that ther is no play for the connecting shaft in the horizontal direction Never loose the bolt of the change bracket coller i If this bolt is loosened the change bracket coller i will be dislocated and the position of the needle ...

Page 28: ... both sides of the legs using two bolts each 2 Tentatively mount there F table supports F e on the leg front using two bolts each 3 Tentatively mount five F table stoppers r on the rear legs using two bolts each Note The steps 1 and 3 are required only when the F table set is purchased separately from the machine The F table is a standard attachment q w r e e w q ...

Page 29: ...6 Insert the pins attached to the rear of the F table R t M y and L u into the cover o on the leg Adjust the height of the F table guide U q and the F table support F e so that the table top surface will become 1 mm lower than the bed top surface After adjustment is finished tighten each bolt securely 7 Mount a drilling bolt i a spring washer 0 and a flat washer 1 in section A of F tables R t and ...

Page 30: ... on the rear of the F table R t M y and L u into the holes of the F table stopper r Note Fix the F table stopper and the F table guide L securely at this position 2 Insert the F table R t M y and L u into the upper and lower positions respectively then check if the table can be securely fixed by the drilling bolts i If not shift the F table support F e to the right and left for further adjustment ...

Page 31: ...be carried out in the reverse procedures Note Use two F table stays B with one notch at both ends of the F table R t and L u When mounting the F table stays A 2 pcs o and B 2 pcs 0 fit the F table stay notch into the table then fix the notch to the legs using the thumb bolts Dismounting can be carried out in the reverse procedures When the F table is at the lower position the F table stays A and B...

Page 32: ...tand assembly q while fitting into the four holes 2 Mount the thread guide assembly e on the thread guide support bars w using the four screws r Note When mounting use one flat washer t below the thread guide support bar w Pay careful attention to the front and back directions of the thread guides A B C Thread guide C Thread guide B Thread guide A Front e r w t q ...

Page 33: ...ting into the four holes 2 Mount the thread guide assembly e on the thread guide support bars w using the four screws r Note When mounting use one flat washer t below the thread guide support bar w Pay careful attention to the front and back directions of the thread guides A B C BES 1241BC Thread guide C Thread guide B Thread guide A Front r w t e q ...

Page 34: ...he start switch is pressed by mistake which could result in injury Before operating the machine for the first time after unpacking or after leaving the machine without operation for a long period of time supply one or two drops of oil to two sections of the needle bar See the left figure Note Use the Brother s specified embroidery ma chine oil Nisseki Embroidery Lube No 10 or the equivalent Supply...

Page 35: ... Machine BES 941BC BES 1241BC 33 3 7 Grounding Note When connecting the power supply make sure to connect it to the grounding cable with green and yellow stripes When plugging in the outlet use a plug suited to the outlet Grounding cable ...

Page 36: ...e cotton stand through the hole of the thread guide right above each cotton stand bar from the lower side 2 Pass the thread through the upper hole of the pretension Push up the tension disc with your finger and place the thread under the disc Then pass it through the lower hole 3 Pass the thread through the upper hole of the 2nd pretension Push up the tension disc with your finger and place the th...

Page 37: ... thread take up 7 Bring the thread to the inner thread guide again to insert it into the hole from the upper section then into the lower thread guide 8 Pass the thread through the hole of the needle bar thread guide then pass it through the needle eye without passing it through the presser foot 1 Pass the upper thread from the cotton stand through the hole of the thread guide right above each cott...

Page 38: ... clockwise once and place it on the spring 5 Pass the thread through each hole of the upper thread guide U and the thread guide C 6 After passing the thread through the hole of the thread guide U insert the thread into the right side of the inner thread guide and pass it through the hole of the thread take up 7 Bring the thread to the inner thread guide again to insert it into the hole from the up...

Page 39: ...n case 3 Close the knob and take out the bobbin e Replacing bobbin 1 Put a new bobbin in the bobbin case 2 Slide the thread under the tension spring t through the notch r 3 Pull out the thread from the hole of the tension spring t 4 Pull out the thread by about 50 mm 5 The winding direction is as shown in the illustration at left Attaching bobbin case 1 Hold the knob w and attach the bobbin case s...

Page 40: ... on the rotary hook side The needle should not be angled to the left when viewed from the front Selecting needle When using special threads such as gold silver and rame yarn use a heavy duty needle 11 16 For better finish paste the waxed paper on the back of the material In general use DBxK5 11 18 according to the material thickness For knitted materials use DBxK23 11 because its rounded point pre...

Page 41: ...pins of the tubular round arms R q and L w into the notches of the X axis feed frame e Slide the arm to the right and left and lower the fixing lever r to fix them 2 Set the right and left fixtures of the tubular square hoop t while sliding them under the flat spring y upward Then fit the frame projecting part u into the hole of the tubular square hoop t securely q ...

Page 42: ...apter 1 Preparation of Embroidery Machine BES 941BC BES 1241BC 40 By changing the tubular round arm mounting width various sizes can be set Note Change the width referring to the pin position 360mm 400mm ...

Page 43: ...te y into the holder base frame L e holder base frame C r and holder base frame R t using bolts and washers 4 From the front put the holder base frame C assembly r under the frame connecting plate R w and fix it using four bolts 5 Check that the clearance between the table and the mounted holder base frame C assembly r is even when viewed from the machine front Adjustment Loosen two bolts of the F...

Page 44: ... left bolts of the F table guide U i and move it in the direction of arrow for adjustment 7 Tighten each bolt securely after adjustment is finished Attaching the holder base 1 Mount the holder base mounting frame e on the X axis feed frame q and holder base frame C w using three clamp screws 2 When the mounting pitch of the holder base is 370 mm mount the holder base horizontally to the holder bas...

Page 45: ...on of Embroidery Machine BES 941BC BES 1241BC 43 r q r w 3 When the mounting pitch of the holder base is 550 mm mount the holder base vertically to the X axis feed frame q and holder base frame C w using the thumb bolts r ...

Page 46: ...cal sash frames q on the holder base frames L and R and two horizontal sash frames w on the X axis feed frame e and the holder base frame C r using the screws 3 Set the material Then set ten sash clips 290 t horizontally on the upper and lower sides four sash clips 220 y vertically on the left and right sides and two sash clips 220 y horizontally on the upper and lower sides q e w q r t y t e e y ...

Page 47: ... sewing with the flat frame the sewing range becomes 460 mm maximum in the X direction by conducting every other head operation only for No 1 and No 4 1 Put the needle bar case at the needle bar No 1 position and remove the presser feet for heads No 2 and No 3 2 Set the frame to flat hoop every other head operation ...

Page 48: ...dle bar thread guide Correct adjustment Turn the upper thread tension dial so that the needle thread can be pulled to the back of the material and that the lower stitch width will be about 1 3 of the upper stitch width 6 8mm 0 07 0 12N 7 12gf e q w Adjustment of tension spring 1 The tension spring should be adjusted to 6 8 mm in height and 0 07 0 12 N 7 12 gf in force Upper thread Lower stitch wid...

Page 49: ...e tension spring force insert a driver tip in the groove of the thread tension bar e and turn it Lower thread tension The standard tension of the lower thread is 0 15 0 3N 15 30gf This tension may vary depending on the used thread In general press the bobbin case to a smooth vertical surface and hang the designated number of coins Turn the thread tension screw so that the lower thread will come ou...

Page 50: ...Chapter 1 Preparation of Embroidery Machine BES 941BC BES 1241BC 48 ...

Page 51: ...pter 2 Embroidering Procedures After installation of machine start embroider ing This chapter explains about the opera tion panel on the machine as well as pre cautions for the actual embroidering process ...

Page 52: ...PACE W X Y Z STOP BES 1241BC Starts embroidering Restarts after moving the carriage to embroidering start position by using the jog switch Restarts embroidering after a suspension STOP Cancels errors during embroidering Suspends embroidering Selects sewing data Chapter 3 Selection of Data and Embroidering page 59 Specifies a sequence of colors sequence of needle changes in sewing data Setting of N...

Page 53: ... page 89 Trims thread during suspension Moves the hoop to a preset hoop retract position When this switch is pressed again the hoop returns to the previous position Checks the embroidering area Moves the hoop automatically into the embroidering area when the embroidery position is out of the area 0 1 2 4 5 3 6 7 8 9 ESC END INS DEL A B C D E F J K L G H I M N O T U V P Q R S SPACE W X Y Z Used for...

Page 54: ...hes only Changes the speed range during embroidering Use switches only Carries out inching of the hoop when the switch is pressed in the inching mode Move the cursor for selecting sewing data and an icon Moves the needle bar The needle moves by the diameter every time this switch is pressed Change to the screen for selecting sewing data Operation panel Contrast volume Adjusts the screen contrast S...

Page 55: ...as soon as the machine stops Refer to Resetting Machine Stop page 125 to stop flashing Power switch Starts embroidering Holding down this switch executes embroidering at a low speed When resuming embroidering after a stop release stop before pressing this switch Refer to Resetting Machine Stop page 125 for details Switches on Tension Plate THREAD SENSOR lamp HEAD switch MENDING lamp MENDING switch...

Page 56: ... be located MENDING switch This switch is set to upside to drive or to suspend the machine head for a designated period of time when the machine steps back during embroidering STEP BACK FWD switch When it is turned to BACK the machine steps back When it is turned to FWD the machine steps forward If you keep the switch turned for a while the machine will continue stepping even after you let the swi...

Page 57: ...n for Embroidering Turn on the machine power page 56 Retrieve the embroidery data page 57 Press on the operation panel Press on the operation panel Chapter 3 Selection of Data and Embroidering page 59 Chapter 4 Editing of Embroidering Data page 77 Edit the retrieved embroidery data ...

Page 58: ...e zero point and the sewing screen is displayed BES 941BC BES 1241BC The speed range and actual speed is displayed A sequence of changing colors is displayed A sequence of colors is displayed A total number of stitches is displayed A number of colors registered in data is displayed A data name is displayed A kind of hoop is displayed Operational icons are basically displayed however some icons suc...

Page 59: ...in the machine is displayed 2 Select a screen by pressing keys and select required data by pressing ten keys or When using ten keys for data selection input a numerical figure 1 9 which indicates each data name Required embroidery data is selected and read 3 Press key Required embroidery data is selected and read Selected embroidery data is read Start Embroidering 1 Press to check the embroidering...

Page 60: ...BES 941BC BES 1241BC 58 Chapter 2 Embroidering Procedures ...

Page 61: ...Chapter 3 Selection of Data and Embroidering This Chapter describes how to select em broidery data in order to start embroidering ...

Page 62: ...f the screen Modification of data name Page 68 Deletion of embroidery data Page 66 Embroidering Operation Embroidering start Page 72 Embroidering feedhold Page 73 Embroidering cancel Page 73 Step forward step back Page 74 Step forward back stitch by stitch Step forward back by every 10 stitches Step forward back by every 100 stitches Step forward back until a next color change Step forward back to...

Page 63: ...in the machine memory once before selection If there is no space in the machine memory delete unnecessary data to make a space Registration of Embroidery Data from Floppy Disk Register embroidery data from a floppy disk into the machine memory Types of data to be registered are as shown below DOS formatted data Data format Extension Icon ECS Data with a name of xxxx ECS Tajima Data with a name of ...

Page 64: ...oppy Disk 1 When loading a floppy disk set it straight with the labeled surface facing this side 2 When unloading a floppy disk press the eject switch 3 When it comes out pull it straight When the access lamp if ON never press the eject switch Otherwise embroidery data in the floppy disk may be destroyed Registration of Sewing Data into Machine Memory 1 Load a floppy disk with sewing data Access l...

Page 65: ... is newly registered in the machine memory Select embroidery data and press The selected data is automatically registered in the memory and the machine enters a standby status If registration is done without loading a floppy disk the following screen is displayed after the step 4 is finished Load a floppy disk for data registration Currently selected embroidery data Currently displayed screen No o...

Page 66: ...y data registered in the memory is displayed 2 Select a screen by pressing 3 Select embroidery data to read by pressing ten keys or 4 Press Embroidery data is selected and read When a free space is specified in the memory a screen for reading data from the floppy disk is displayed Refer to Registration of Sewing Data into Machine Memory steps 5 and afterward on Page 63 5 The initial screen is disp...

Page 67: ...the machine memory 1 Connect the personal computer with BE 100 installed and the operation panel by means of the RS 232C cable 2 Press the 3 Select the data registration screen by pressing the 4 Select an area for data registration by pressing ten keys or and then press the key 5 Press the When a floppy disk is set When no floppy disk is set Personal computer with BE 100 installed Dedicated commun...

Page 68: ...gister by pressing ten keys or and then press the key The data is registered in the machine memory Deletion of Embroidery Data from Machine Memory Embroidery data can be deleted from the machine memory 1 Press A list of registered data is displayed 2 Select a screen by pressing 3 Select embroidery data to delete by pressing ten keys or Currently displayed screen No of screens to be selected ...

Page 69: ...confirmation message is displayed 5 When key is pressed selected embroidery data is deleted from the memory When deleting embroidery data in the machine memory entirely When deleting embroidery data registered in the machine memory entirely turn ON the power to the machine while pressing DEL DEL ...

Page 70: ...o input a or space Alphabetical characters A Z Numerical characters 0 9 Use 0 SPACE through 9 W X Y Z An input character changes depending on the number of times each is pressed as shown below _ underbar hyphen Use 1 1 Press Embroidery data saved in the memory is displayed 2 A list of embroidery data is displayed Select a screen by pressing 3 Select embroidery data to modify the name by pressing t...

Page 71: ...key once again 5 Input a new data name by pressing ten keys When modifying embroidery data names entirely 6 Pressing DEL DEL deletes currently reversed characters 7 Press 8 T U V twice T is input 8 Press 3 D E F three times E is input 9 Press 7 P Q R S five times S is input 10 Press 8 T U V twice T is input 11 Press 0 SPACE once 0 is input ...

Page 72: ...e the cursor to the right 13 Press 0 SPACE once 0 is input 14 Press 3 D E F once 3 is input 15 After inputting a data name press A data name is modified by the above procedures When modifying only one character FLNWER can be modified to FLOWER in the following procedures 6 Press 7 Press twice and display N reversely 8 Press DEL N is deleted ...

Page 73: ...BES 941BC BES 1241BC 71 Chapter 3 Selection of Data and Embroidering 9 Press 6 M N O four times O is input 10 Press A data name is modified by the above procedures ...

Page 74: ...ing Sewing Operation For details of specifying a sewing start position refer to Registration of Sewing Start Position Page 105 When is pressed while the message Area over is indicated on the screen a dialog box is displayed for confirming whether or not to start sewing forcibly Pressing starts sewing however depending on the start position an interference with the frame may occur Exercise added ca...

Page 75: ...g Feedhold 1 Press STOP Sewing is interrupted Cancellation 1 Press ESC while sewing is interrupted When repetition of patterns is set a pattern which is currently being sewn is canceled When canceling all patterns press ESC once again 2 A message for confirmation is displayed When canceling sewing press ...

Page 76: ... For stepping forward back stitch by stitch For stepping forward back by 10 stitches For stepping forward back by 100 stitches For stepping forward back up to the next previous color change For stepping forward up to the sewing start point of a next pattern if repetition of patterns is set Specify the number of stitches for stepping forward back 1 Select a required item as described above by press...

Page 77: ... 3 Selection of Data and Embroidering 4 The embroidery head advances retracts by a specified number of stitches For Step Forward Back 1 Press Stitches steps forward back by a specified amount Resuming Sewing 1 Press Sewing is started ...

Page 78: ...ing 3 Select the embroidering data to be written with numeric keys or 4 Press the END button 5 Designate the thread trimming feed number with It cannot be designated when the ECS data format is selected Use numeric keys or the DEL DEL button to change the file name 6 Highlight the icon of the data format with and designate the format of the data to be written with 7 Highlight the edit value valida...

Page 79: ...diting of Embroidering Data Pressing on the operation panel after reading embroidering data displays the em broidering data editing screen Simple op eration by using embroidering data is avail able on this screen ...

Page 80: ... mirror pattern Zero point symmetric mirror pattern No of repetitions in the horizontal direction lines Page 84 No of repetitions in the vertical direction rows Page 84 Distance in the horizontal direction between two outer hoop centers Page 84 Distance in the vertical direction between two outer hoop centers Page 84 Direction of repetitions Page 84 Horizontal direction from upper left to lower ri...

Page 81: ... counterclockwise Rotating angle can be set in either of the following By using Angle can be specified in increments of 90 Setting of 90 180 or 270 is available By using ten keys Angle can be specified in increments of one degree 1 Read sewing data 2 Press 3 Press to select an angle or use ten keys to specify an angle 4 Press END The initial screen is displayed again ...

Page 82: ...e too rough or close if enlargement or reduction is excessive There are the following two types of enlargement reduction Enlargement reduction at the same ratio in both the X and Y directions Enlargement reduction at different ratios in the X and Y directions 1 Read sewing data 2 Press Enlargement reduction at the same ratio in the X Y directions 3 Press are reversed in black 4 Input enlargement r...

Page 83: ...nt ratios in the X Y directions 3 Press twice is reversed in black 4 Input enlargement reduction ratio in the X direction by pressing ten keys 5 Press is reversed in black 6 Input enlargement reduction ratio in the Y direction by pressing ten keys 7 Press END The initial screen is displayed again ...

Page 84: ...attern The pattern is reversed in the right left direction on the basis of the embroidering start point Up down mirror pattern The pattern is reversed in the up down direction on the basis of the embroidering start point Zero point symmetric mirror pattern The pattern is reversed on the basis of the embroidering start point 1 Sewing data is read 2 Press Zero point symmetric mirror patter Up down m...

Page 85: ...sing until is displayed 4 Press END The initial screen is displayed again Up Down Mirror Pattern 3 Keep pressing until is displayed 4 Press END The initial screen is displayed again Zero Point Symmetric Mirror Pattern 3 Keep pressing until is displayed 4 Press END The initial screen is displayed again ...

Page 86: ...rtical direction from lower right to upper left Vertical direction from lower left to upper right Horizontal direction from upper right to lower left Vertical direction from upper left to lower right Horizontal direction from lower left to upper right There are the following two types of intervals between repetitions By setting a distance between the outer hoops of each pattern By setting a distan...

Page 87: ...l and horizontal directions are changed over by pressing Press for setting a distance between the centers of each pattern For setting a distance between the outer hoops of each pattern For setting a distance between the centers of each pattern 6 Select the direction of repetitions by pressing 7 Press END The initial screen is displayed again ...

Page 88: ...imming This function is previously set to ECS data or Except ECS data upon shipment For thread trimming at the number of feeds indicated on the icon For not thread trimming by feeding Swing width correction For setting the needle swing width correction amount The correction amount can be set in increments of0 1mm The setting range is 0 5 2 0mm in both the X and Y directions The setting range is di...

Page 89: ...pressing 5 Press END after setting is finished Swing Width Correction Correction values within 5 20 can be input However excessively large values may result in distortion of a pattern 3 Select this function by pressing 4 Select a correction amount in the X direction by pressing 5 Reverse by pressing 6 Input a correction amount in the Y direction by pressing ...

Page 90: ...BES 941BC BES 1241BC 88 Chapter 4 Editing of Embroidering Data 7 Press END after setting is finished Press when setting continuously ...

Page 91: ...Chapter 5 Setting This Chapter describes how to set a sewing speed correct trouble including thread break age and others related to machine motions ...

Page 92: ...ne Selection of embroidery hoop Page 97 Display of every head every other head Page 97 Speed range Page 98 Speed in speed range Page 99 Thread trimming length Page 102 Thread removal feed length Page 102 Inching ON OFF Page 103 Sewing area Page 104 Resetting of thread breakage error Page 101 Needle bar stop at mending stop point Page 101 Method of thread trimming before thread breakage error Page ...

Page 93: ...k stitch ON OFF sewing send position page 116 Lock stitch ON OFF sewing start position after thread trimming page 117 Setting of speed limit in a small pitch Speed limit in a short pitch page 118 Display of Information Display of pattern information Page 120 Features of machine Page 121 Version information Page 122 Hoop Retract Point Hoop retract point Page 105 Automatic hoop retract ON OFF Page 1...

Page 94: ...embroidering sequence is selected while embroidering is interrupted Press for modifying all sequences at one time 3 Input the number of a needle bar by pressing ten keys When inputting a numerical figure exceeding 10 press the 0 SPACE first Insertion of Feedhold Press and reverse the display on the right of a point to insert a feedhold then press STOP 4 Press END Modified setting is saved and the ...

Page 95: ...pter 5 Setting Insertion of Hoop Retract 1 Press to highlight the position right next to the position to insert the hoop retract and press 2 Press the END button The changed setting is stored and the previous screen is displayed ...

Page 96: ...ty Press to switch over the thread breakage sensor for each head between ON and OFF 3 Press END Modified setting is saved and the initial screen or halt screen is displayed again Thread Breakage Sensitivity Sensitivity of the thread breakage sensor can be set The sensitivity can be set within the range of 1 100 Sensitivity increases as the figure decreases This function is previously set to 10 upo...

Page 97: ...usly set to 0 stitches upon shipments 1 Press twice 2 Select by pressing 3 Input the number of stitches to step back automatically by pressing ten keys Pressing sets whether to execute an extra step back by a sensitivity amount of the thread breakage sensor in the automatic step back mode When stepping back by a sensitivity amount of the thread breakage sensor When stepping back by preset number o...

Page 98: ...ge can be displayed The stitch counter increases the indication stitch by stitch The lower thread counter can be validated or invalidated by pressing The stitch counter can be cleared to zero by pressing DEL 1 Press three times 2 Input the number of counts of the lower thread counter by pressing ten keys 3 Press END Modified setting is saved and the initial screen or halt screen is displayed again...

Page 99: ...mi wide cap frame Wide cap frame All heads or every other head can be selected by pressing All heads Every other head Only heads No 1 and No 4 are operated When operating every other head refer to 4 5 Flat Frame Every Other Head Operation Page 45 and remove the presser feet of heads No 2 and No 3 1 Press 2 Select by pressing 3 Press 4 Select a type of a hoop by pressing 5 Select either all heads o...

Page 100: ...ge of 1 6 1 Press 2 Select by pressing 3 Press 4 Select a needle bar by pressing When setting the same speed range for all needle bars press When modifying the speed range for one needle bar When modifying the speed range for all needle bars 5 Input a required speed range by pressing ten keys 6 After modification is finished press END Modified setting is saved and the previous screen is displayed ...

Page 101: ...f a speed to be set varies depending on a selected hoop 1 Press 2 Select by pressing 3 Press 4 Select a speed range to modify by pressing 5 Input a required speed by pressing ten keys 6 After modification is finished press END Modified setting is saved and the previous screen is displayed again Upper limit of speed to be set in each range Lowest speed Maximum speed ...

Page 102: ...porarily at the mending end point For stopping embroidering at the mending end point For stopping embroidering temporarily at the mending end point and then starting all heads automatically For not stopping embroidering at the mending end point and continuing embroidering Manually trim the lower thread immediately after resetting a thread breakage error if feeding by stitch back is long i e 40 to ...

Page 103: ...d select whether to stop embroidering temporarily Setting of thread trimming method after stopping 4 Select a thread trimming method by pressing Setting of mending stop position 4 Select a stop point number of stitches before mending by pressing ten keys The machine does not stop if the automatic step back setting is lower than the input value After setting all items press END Modified setting is ...

Page 104: ...he same speed range for all needle bars 5 Input thread length by pressing ten keys Thread length can be input within the range of 1 10 Length decreases as the figure decreases When inputting 10 press the 0 SPACE first 6 After setting is finished with all needle bars press END Modified setting is saved and the previous screen is displayed again Thread Withdrawal Feed Length Thread withdrawal length...

Page 105: ...ting is saved and the previous screen is displayed again Inching Whether to select the inching mode for thread trimming can be set This function is previously set to selected upon shipments 1 Press 2 Select by pressing 3 Press 4 Set whether to select the inching mode by pressing 5 Press END Modified setting is saved and the previous screen is displayed again ...

Page 106: ...y pressing 3 Press 4 Specify coordinates of the upper left of the sewing area Move the hoop by pressing 5 Press Pressing set a maximum area designated for a currently set hoop 6 Specify coordinates of the lower right of the sewing area Move the hoop by pressing 7 Press END Pressing restores a status before modification of setting 460mm 1 2 0 0 460 450 450mm Indicates a currently set embroidery are...

Page 107: ... key Hoop Retract Point The hoop basic point retract point can be set when sewing is interrupted When restarting sewing after the hoop is retracted during an interrupt press 1 Press 2 Move the hoop by pressing 3 Press END Modified setting is saved and the initial screen or halt screen is displayed again The hoop returns to the initial point Cancellation of Setting 1 Press once again Modified setti...

Page 108: ...he hoop automatically by pressing For automatically retracting the hoop For not retracting the hoop automatically 3 Press END Modified setting is saved and the initial screen or halt screen is displayed again Movement to Registered Sewing Start Point This operation should be done before starting sewing 1 Hold down STOP and press 2 The hoop moves and the zero point is detected Then the hoop moves t...

Page 109: ...ressing 3 Press 4 Select by pressing 5 Select whether to validate a return to the start point by pressing When the start point return is valid When the start point return is invalid 6 Press END Modified setting is saved and the previous screen is displayed again Speed Range For setting whether to reflect modified machine speed to all needle bars 1 Press twice 2 Select by pressing 3 Press ...

Page 110: ...ry Area The embroidery area can be checked according to the following procedure The following two checking methods rectangle and octagon can be selected Item Contents Checking by rectangle tracing Checking by octagon tracing 1 Press twice 2 Select with 3 Press 4 Press to select 5 Press to change the settings Checking with the rectangle Checking with the octagon 6 Press END The changed settings are...

Page 111: ...ct by pressing 3 Press 4 Select voltage by pressing 5 Press END Modified setting is saved and the previous screen is displayed again Setting of RS 232C Communication Speed Speed for transferring embroidery data between the operation panel and a personal computer with BE 100 installed The transmission speed can be selected within the range of 9600 19200 38400 and 115200 unit bps 1 Press twice 2 Sel...

Page 112: ...ed by pressing 6 Press END Modified setting is saved and the previous screen is displayed again Display Language A language to display on the screen can be set The following languages can be selected Display Contents JPN Japanese Eng English Espanl Spanish fr French 1 Press twice 2 Select by pressing 3 Press ...

Page 113: ...e Alarm Sound Whether to generate a sound in case of an error can be set The following sounds can be set ON A sound is generated until the error is reset OFF A sound is generated twice 5 A sound is generated five times 1 Press twice 2 Select by pressing 3 Press 4 Select Beep by pressing 5 Select a kind of sound by pressing 6 Press END Modified setting is saved and the previous screen is displayed ...

Page 114: ...rtup speed of the main shaft CAP Speeds up the startup speed of the main shaft when using the cap frame FLAT Speeds up the startup speed of the main shaft when using a frame other than the cap frame 1 Press twice 2 Select with 3 Press 4 Select Motive Speed with 5 Select the type of the startup speed of the main shaft with 6 Press the END button The changed settings are stored and the previous scre...

Page 115: ...an be set MANUAL Manually resets entanglement AUTO Automatically resets entanglement RETRY Automatically resets entanglement and restarts the operation 1 Press twice 2 Select with 3 Press 4 Select Release b1 err with 5 Select the resetting method with 6 Press the END button The changed settings are stored and the previous screen is displayed ...

Page 116: ...the following optional accessories on the machine before starting sewing Boring knife Needle plate for boring If editing including enlargement reduction or rotation is done using sewing data created for boring the correct sewing may not be available This function is previously set to Boring mode valid invalid invalid Data shift valid invalid invalid Validation Invalidation of Boring Mode 1 Press t...

Page 117: ...te the data shift by pressing When the data shift is valid When the data shift is invalid 6 Press END Modified setting is saved and the previous screen is displayed again Lock Stitch Lock stitch can be set at the sewing start and end positions and sewing start position after trimming thread Setting lock stitch at the sewing start position 1 Press twice 2 Select with ...

Page 118: ...ate or invalidate the lock stitch Validating the lock stitch Invalidating the lock stitch 6 Press the END button The changed settings are stored and the previous screen is displayed Setting the lock stitch on the sewing send position 1 Press twice 2 Select with 3 Press 4 Select with ...

Page 119: ...ed settings are stored and the previous screen is displayed Setting the lock stitch at the sewing start position after thread trimming 1 Press twice 2 Select with 3 Press 4 Select with 5 Press to validate or invalidate the lock stitch Validating the lock stitch Invalidating the lock stitch 6 Press the END button The changed settings are stored and the previous screen is displayed ...

Page 120: ...can be set from 400 rpm to the maximum speed available for the current frame in units of 10 rpm 1 Press twice 2 Select with 3 Press 4 Designate the stitch length to be limited with 5 Designate the speed to be limited with 6 Press the END button The changed settings are stored and the previous screen is displayed Invalidating speed limit in a short pitch 1 Press the button after the setting screen ...

Page 121: ...ccording to the cloth thickness The value can be designated between 95 and 125 degrees in 1 degree units The smaller values are suitable for thick material and the larger ones are suitable for thin material The standard value is 110 degrees 1 Press three times 2 Select with 3 Press 4 Designate the feed end angle with 5 Press the END button The changed settings are stored and the previous screen is...

Page 122: ...about a selected pattern can be checked Contents of information to be displayed are as shown below Size of sewing data mm Coordinates of embroidering start point Coordinates of embroidering end point Number of stitches Number of colors Name of data 1 Press three times 2 Select by pressing 3 Press 4 Check information about patterns 5 Press ESC The previous screen is displayed again ...

Page 123: ...splayed are as shown below Maximum moving range of flat hoop for all heads Maximum moving range of flat hoop for every other head Maximum moving range of cap hoop Number of heads Number of needle bars per head 1 Press three times 2 Select by pressing 3 Press 4 Check information about the machine 5 Press ESC The previous screen is displayed again ...

Page 124: ...type 1 earlier type 2 new type Interface CPU ROM version Feed wave form table version Machine s bridge type W wide bridge S standard bridge 1 Press three times 2 Select by pressing 3 Press 4 Check information about versions The version is displayed by numerical figures 1 255 5 Press ESC The previous screen is displayed again Operation panel version Interface CPU ROM version Upper axis CPU ROM vers...

Page 125: ...Chapter 6 Operation of Machine ...

Page 126: ...rd Then the hoop moves to the zero point and the sewing data screen is displayed Note When turning the power off and back it on again wait for at least 10 seconds 1 2 Preparation for Embroidering Select embroidering data Using the jog switches determine a position to start embroidering Note An error message is displayed on the LCD if a pattern comes out of the hoop Pressing starts embroidering Aft...

Page 127: ... is displayed on the operation panel To reset the stop switch turn it counterclockwise while pressing it The knob of the switch pops up and machine stop is reset Check to see that both stop switches at left and right are reset 2 3 Emergency Stop of the Machine When the emergency stop switch is pressed all power except that for the fluorescent lamp is turned off 2 4 Resetting Emergency Stop When tu...

Page 128: ...e STOP switch or press the STEP BACK FWD switch in order to reset the alarm STOP 4 Return the hoop to a position where thread breakage occurred by pressing the STEP BACK switch or Note When the switch is turned for 5 stitches or more the machine continues operation with out holding the switch To stop the machine turn the switch to the opposite side 5 Press the START switch on the operation panel o...

Page 129: ...mbroidering Manual operation The mending start and end positions can be set for each machine head using the MENDING switch on the tension plate The MENDING lamp is lit when the MENDING switch of each machine head is flipped up during standby Resewing from the step back position to this position can be executed When the MENDING switch is flipped up while the MENDING lamp is off the lamp is turned o...

Page 130: ... the MENDING switch of the machine head whose lamp is off is pressed The MENDING lamp of the machine head is lit and mending is executed for the ma chine head Note When the MENDING switch of the machine head whose lamp is on is pressed The MENDING lamp of the machine head goes off and mending is not excuted for the machine head No 1 Stitch No 2 Stitch No 3 Stitch No 3 Mending LED is off Stand by p...

Page 131: ...ing so may cause damage to the machine 5 Hoop Feed Position In order to ease mounting and dismounting of the embroidery hoop another needle position can be set as a hoop feed position in the movable area additionally to the current needle position In order to ease material attachment while operation is suspended the hoop can be moved to the feed position at any time by the hoop feed switch The hoo...

Page 132: ...e rectangular outline of the pattern is traced Note The outline of pattern can be checked in rect angle or octagon by setting Checking em broidery area in Enviromment 1 6 2 Automatic Hoop Movement in Area Note After finishing the movement inside the area by this function execute external tracing Then check that the needle and the presser foot do not interfere with the hoop before starting embroide...

Page 133: ...hapter 6 Operation of Machine BES 941BC BES 1241BC 131 7 Jog Switches 7 1 Hoop Movement to Start Position The hoop can be moved before starting embroidering and the start position can be set arbitrarily ...

Page 134: ... sewing is started the pattern may be embroidered in a different position Be sure to use the inching mode appropriately 1 Press the while pressing the STOP switch in order to select the inching mode 2 Press the jog switch and the hoop moves to the direction of the pressed switch Note Note that the forcible hoop movement will produce deviation of embroidering by the amount If the hoop and material ...

Page 135: ...of Zero Point After the zero point is detected the hoop returns to the initial point 1 Press 0 SPACE while pressing STOP with the machine stopped Initial screen Temporary stop screen 2 The hoop moves and the zero point is detected 3 The initial screen is displayed again ...

Page 136: ...Chapter 6 Operation of Machine BES 941BC BES 1241BC 134 ...

Page 137: ...Chapter 7 Maintenance ...

Page 138: ...e gets into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or grease under any circumstances as they can cause vomiting and diarrhoea Keep the oil out of the reach of children CAUTION Keep the machine clean at all times to prevent machine trouble Keep the machine clean Remove dirt with a soft dry cloth If necessary clean with the detergent soaked clo...

Page 139: ... Note When oiling be sure to supply Brother s machine oil Nisseki Sewing Lube 10 or the equivalent using the dropper Excessive oiling may cause the material to be stained 2 1 Head BES 941BC Supply oil to the needle bars 18 positions once a day as shown on the left BES 1241BC Supply oil to the needle bars 24 positions once a day as shown on the left ...

Page 140: ...to wipe off excessive oil spilt at the lower part of the arm Connecting rod Arm cover L Connecting rod BES 1241BC Lubricate the following part indicated by the arrow clearance between the connecting rod and the needle thread take up bearing once a week Note In lubrication select needle bar 12 and remove the head cover to check the lubrication area Be sure to wipe off excessive oil spilt at the low...

Page 141: ...needle bar case 2 Loosen four bolts q and remove the needle case w 3 Loosen three screws e and remove the presser foot guide plate r 4 Loosen two bolts t and remove the arm cover L y 5 Grease all the grooves of the thread take up cam u and the work clamp cam i 6 After greasing assemble in the reverse order Note When assembling the needle bar case w place it on the machine and turn the change pulle...

Page 142: ...s t and remove needle bar case y 4 Loosen three bolts u and remove presser foot guide plate i 5 Grease all the grooves of the thread take up cam o and the work clamp cam 0 6 After greasing assemble in the reverse order Note When assembling the needle bar case y place it on the machine and turn the change pulley 2 behind the cover 1 at right Check that it is engaged and then tighten the bolts When ...

Page 143: ...w insert grease into the tapped hole using the syringe Then tighten the bols 9 After greasing assemble in the reverse order Note When assembling the needle bar case w place it on the machine and turn the change pulley 4 behind the cover 3 at right Check that it is engaged and then tighten the bolts When attaching the presser foot guide plate r move the presser foot up and down by the retracting le...

Page 144: ... wiper solenoid assembly 2 7 Remove the screws 3 at the places indicated by the arrow insert grease into the tapped hole using the syringe Then tighten the screws Also grease the presser bar spring 4 the pressure bar guide bracket 5 the pressure bar metal U 6 and D 7 8 After greasing assemble in the reverse order Note When assembling the needle bar case y place it on the machine and turn the chang...

Page 145: ...ank 30 provided with the machine Procedure 1 Loosen 12 2 screws q and remove the X feed cover w 2 Remove the X feed cover e 3 Loosen eight screws r and remove the Y feed cover t from the right and left 4 Grease the X feed linear guides 3 positions the Y feed linear guides one each on the right and left and the linear guide inside the No 3 bed Slide the guide to spread grease entirely 5 After greas...

Page 146: ...otch is on the top as shown in the illustration to the left 4 Evenly apply the supplied grease tank 30 white when the coil spring is engaged with the edge of the coupling hub F Note Replace the lower shaft module if the coil spring is not engaged with the edge j of the coupling hub F but is only displaced 5 Apply the grease between each coil spring while setting up the supplied driver between coil...

Page 147: ...the test mode 8 Replace the lower shaft module if it cannot be repaired even if being checked in the test mode 9 Install the lower shaft s case cover and secure it with polyester tape Use heatproof tape to secure it if polyester tape is not available 10 Reassemble the module by reversing this procedure 11 Carry out the thread trimming test for checking ...

Page 148: ...Chapter 7 Maintenance BES 941BC BES 1241BC 146 ...

Page 149: ...Chapter 8 Standard Adjustment ...

Page 150: ...ivation of the START switch re sulting in bodily injuries Adjustment CAUTION If adjustment should be made while the power switch is turned on pay special attention to your safety Maintenance and inspection of the machine should be conducted only by trained engineers 1 Adjusting Needle Bar Height q u e y t r 10 8mm y t u i i q w Tighten the screw u so that the clearance can be even Do not hit this ...

Page 151: ...ned to the right by 25 30 Tighten the needle bar clamp set screw e securely Note When tightening the needle bar clamp set screw e the hole in the needle bar guide should face the front 4 After adjustment is finished remove the positioning bar w 5 Set the needle bar at the highest position where the pulley B indication mark and the cover indication mark are aligned Lightly press the top dead center...

Page 152: ...ustment BES 941BC BES 1241BC 150 180 q q w Do not hit this section Tighten the bolt o so that the clearance can be even u e r y t i o e 10 8mm When using the bottom dead center gauge Cutting section Cutting section 0 0 i u o ...

Page 153: ... the cutting section The bottom dead center gauge should be set in or removed from the rotary hook with its cutting section facing upward 5 Tighten the screw y of the needle bar clamp t securely 6 After adjustment is finished remove the positioning bar w 7 Set the needle bar at the highest position where the pulley B indication mark and the cover indication mark are aligned Lightly press the top d...

Page 154: ...rn the power switch off 2 Tighten the screw q of the rotary hook cutting section to fit to that of the lower shaft w 3 When mounting press it inward until it stops Note After replacing rotary hooks refer to 4 Ad justment of Timing Between Needle and Ro tary Hook Page 154 and adjust the timing Cutting section ...

Page 155: ...o that the rotary hook point is aligned properly 6 Loosen the set screw y on the side of the bed t 7 Turn the eccentric screw u on the left side of the bed t using a regular screwdriver and adjust a clearance between the needle and the rotary shaft to 0 3 0 5 mm 8 Adjust the clearance between the needle and the rotary hook s point to 0 3 0 5 mm at the needle bar No 9 i No 12 needle for BES 1241BC ...

Page 156: ...tment of the rotary hook 4 Turn the pulley B q manually until the relationship between the needle point and the rotary hook s point can be easily checked at around 140 of the scale 5 Press the STEP BACK FWD switch to move the rotary hook for each head to adjustment STEP BACK For rotating the rotary hook little by little in the clockwise direction STEP FWD For rotating the rotary hook little by lit...

Page 157: ...the rotary hook is completed and the timing is stored The rotary hook returns to the stop position accordingly 5 Adjustment of Presser Foot Height 1 Turn the power switch off 2 Select the needle bar No 1 3 Loosen the screw w of the presser foot q and adjust the presser foot q until it comes above the cloth top surface when it is at the alignment position where the pulley B indication mark and the ...

Page 158: ...power switch on and wait until the hoop home position detection is finished 2 Press the stop switch in order to ensure maximum safety during adjustment Adjust the movable knife position in this state 3 Loosen two bolts e that connect the thread trimmer connecting rods B q and C w 4 Tighten the two bolts e until the triangle part of the movable knife r is projected by 1 mm from the fixed knife t Pr...

Page 159: ...ten the two bolts e so that the thread trimmer connecting rods B q and C w are positioned in a straight line 5 After adjustment is finished reset the stop switch Release stop SW to operate disappears 6 Turn the power switch off once then on again Check that the clearance between the movable knife r and the fixed knife t is 1 mm 7 When adjusting again follow the step 2 and after q w e Bad example 1...

Page 160: ...nd the machine pulley and motor pulley Use the following procedure to check the belt tension Place a gauge against the belt q loosen the nut w and then turn the nut e to move the slot to the appropriate position so that there is 8 mm of deflection in the belt q when 9 8 N 1 kgf of pressure is applied The machine operating direction is counterclockwise when seen from the machine pulley end slot 8 m...

Page 161: ...Chapter 9 List of Error Messages ...

Page 162: ...not usually displayed Turn the power off and on once If the same error occurs again the area sensor is faulty Press the STOP or turn on the F B switch on the head to either side to restart the home position detecting movement again Turn the power off and on once If the same error occurs again the home position sensor is faulty Adjust the pulley stop position 100 degrees above the needle and press ...

Page 163: ...edle overhang Y Needle overhang X Y Needle overhang X Needle overhang X Y Needle overhang Y Needle overhang X Y Needle overhang X Y The status of presser foot is issued as an alarm when every second machine is used Spindle motor lock Main PC board temperature too high Spindle motor voltage too low Spindle motor voltage too high Spindle motor CPU error Main shaft motor CPU communication com mand er...

Page 164: ...sition sensor are faulty This is not usually displayed Check to see that no lint is tangled in the rotary hook and press the STOP or turn on the F B switch on the head to either side The rotary hook may be rotated forcefully Press the STOP or turn on F B switch on the head to either side to cancel the error If the same error occurs again the lower shaft sensor is improperly adjusted This is not us...

Page 165: ... ACK code receiving error during interfacing to main PCB CPU Send Receive ID code error during interfacing to main PCB CPU Send data checksum error during interfacing to main PCB CPU Data empty error during interfacing to main PCB CPU Receiving error on interface Send time up error Request to waiting time up error Request to recive time up error Receive command error NACK code receiving error Data...

Page 166: ...BES 941BC BES 1241BC 164 Chapter 9 List of Error Messages ...

Page 167: ...bleshooting If there is any indication of trouble with the machine check and correct as described in the table If the trouble cannot be corrected turn off the power and contact your distribu tor for corrective actions ...

Page 168: ...n the outer rotary hook and inner rotary hook Does the outer rotary hook turn smoothly Is the clearance between the rotary hook stopper and the rotary hook adjusted correctly Does the thread come out from the bobbin case smoothly Mechanical Section Thread breakage Needle presser foot interference with embroidery hoop Is the embroidery hoop too small Check the size and needle start position in the ...

Page 169: ...tary hook can be rotated forcibly by manual operation 2 Check that the machine pulley is set to 100 of the scale and press the END switch Measures 1 If the thread end is left too long or stitching is left loosened before starting embroidering the thread is caught in the machine and operation stops 2 When starting embroidering hook the thread end on the spring or hold it with a hand 3 Leave thread ...

Page 170: ...base connected Connect it after checking the types and colors of the connectors Is fuse F1 or F2 on the power PCB in the power supply base blown Replace the fuse with a new one If the fuse is blown again something is faulty Check to see if the wiring is correct Replace the control box with a new one The machine does not operate even if the power is turned on The message Release stop SW to operate ...

Page 171: ... of pins 1 and 2 and pins 3 and 4 at the connector section of the INDEX motor The normal resistance value is approximately 4 4Ω If it is not normal replace the INDEX motor with a new one Also replace the main PCB with a new one Manually turn the color change pulley If it is abnormally heavy adjust the color change mechanism and the needle cap case Start the machine after invalidating its initial s...

Page 172: ...on of connectors P6 and P4 of the main PCB and connectors P19 and P12 on the power PCB in the box and connection from connector P11 of the power supply PCB to the 14v terminal of the power transformer Manually turn the main shaft pulley in the encoder signal test mode and check to see if the stop position signal and encoder signal are proper If either of the signals does not change refer to the bl...

Page 173: ...oper Replace the lower shaft fan with a new one If all the lower shaft fans are at standstill check fuse F4 on the power supply PCB in the control box Is the hole next to the bed with which the error frequently occurs clogged with dust If so clean it Check to see if connection from the thermister of the lower shaft module to the BC PCB is proper The lower shaft overheat error oc curs Is thread tan...

Page 174: ...o connector P7 of the power supply PCB in the power supply base is proper Check fuse F3 on the power supply PCB in the power supply base If it is blown replace it with a new one If it is blown again there is a fault somewhere in the 24v system circuit Wiper out error occurs Does the wiper on the error head remain projected If the wiper is tangled with a thread remove it If the wiper does not retur...

Page 175: ... the power supply PCB in the control box and connection from connector P9 of the main PCB to connector P3 of the power supply PCB in the control box are proper Replace the power supply PCB with a new one Replace the main PCB with a new one Power PCB error occurs Refer to the block diagram showing the cable connections and check to see if connection from connector P5 of the power PCB in the control...

Page 176: ... Replace the power PCB with a new one Replace the main PCB with a new one X axis motor overcurrent stop oc curs Measure the resistance values of pin 1 and pin 2 pin 2 and pin 3 pin 3 and pin 4 pin 4 and pin 5 and pin 5 and pin1 at each connector section of two X axis motors with the tester and check to see if they are approximately 2 1Ω Replace the faulty motor with a new one Refer to the block di...

Page 177: ...o connector P10 of the head PCB is proper Check the resistance value of the jump solenoid which does not operate with the connector section The normal resistance value is approximately 56Ω If it is faulty replace the solenoid with a new one In this case the head PCB may also be faulty Also replace the head PCB with a new one if it does not operate properly even after replacing the solenoid Refer t...

Page 178: ... shaft Turn off the pause switch of the head flip it down and keep flipping up the mending switch until the green LED stops blinking 4 When the LED of the corresponding head stops blinking reset the error with the STOP key on the panel or the step back key of the head Note The above operation will prohibit operation of the lower shaft connected to the faulty lower shaft PCB or the faulty lower sha...

Page 179: ...Connection and Installation of Optional Equipment ...

Page 180: ...nut 4 0 2 Mount the thread winder assembly set e on the thread winder stay q with the tightening screw 1 3 Mount the thread guide r with the drilling bolt set 6 x 20 4 and nut 6 3 4 Mount the spool shaft B t and pan y spool mat u and spool cushion i with nut 5 5 and spring washer 6 5 Insert the thread winder harness o in the 2P No 6 connectors on the rear of the control box 4 1 0 3 0 5 6 ...

Page 181: ...thread guide e right and left for adjustment In order to wind more threads around the bob bin loosen the thread y and move the bob bin hold r 6 After winding is finished pull out the bobbin from the bobbin winder shaft and trim the thread using the thread trimmer u Note If the thread is wound too tight and comes off from the tension disk loosen the knob i If the thread is too loose tighten the kno...

Page 182: ...INSTRUCTION MANUAL BROTHER INDUSTRIES LTD NAGOYA JAPAN Printed in Japan 155 941 C41 S93941 002 1999 09 H 1 ...

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