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Brother service manual ELECTRICAL MECHANISM Panel P.C. board, BAS-311G, BAS-326G, 4594Q

Models: BAS-311G

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8. ELECTRICAL MECHANISM

Panel P.C. board

4594Q

BAS-311G, BAS-326G

115

Page 122

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Brother service manual ELECTRICAL MECHANISM Panel P.C. board, BAS-311G, BAS-326G, 4594Q

Contents

BAS-311G BAS-326G SERVICE MANUALPlease read this manual before making any adjustments PROGRAMMABLE ELECTRONIC PATTERN SEWERSymbols SAFETY INSTRUCTIONS1 Safety indications and their meanings IndicationsDANGER Installation2 Notes on safety Environmental requirementsSewing CleaningMaintenance and inspection If an error occurs in machine operation, or if abnormalTension release 3 Warning labelsMotor cover solenoid coverFUNCTION SETTINGS CONTENTSSPECIFICATIONS DISASSEMBLY9. TABLE OF ERROR CODES 6. ASSEMBLY7. ADJUSTMENT 10. TROUBLESHOOTING1. SPECIFICATIONS 1. SPECIFICATIONS2. FUNCTION SETTINGS 2. FUNCTION SETTINGS2-1. List of special functions when power is turned on When SPEED indicator is illuminated 2-2. List of advanced functions2. FUNCTION SETTINGS 4550Qmemory switches that have been changed from 2-3. Memory switch setting method Advanced2. FUNCTION SETTINGS default settingsInitial value 2-4. List of memory switch settings2. FUNCTION SETTINGS rangeFor solenoid specifications 1 pedal 2. FUNCTION SETTINGSWork clamp settings For pneumatic specifications 2 pedal2. FUNCTION SETTINGS Thread winding2. FUNCTION SETTINGS Sewing machine motor settings2. FUNCTION SETTINGS Feed settingsUser program settings 2. FUNCTION SETTINGSOperation panel settings Device settings 2. FUNCTION SETTINGSData editing settings 2. FUNCTION SETTINGS Maintenance settings 2. FUNCTION SETTINGSError processing settings Specifications and destination settingsUnique machine settings 2-5. Setting the work clamp mode2. FUNCTION SETTINGS Solenoid specifications, single pedal standard operationsPneumatic specifications, 2 pedal standard operations 2-6. Stitch counter checking method2. FUNCTION SETTINGS Pneumatic specifications, 2 pedal sequence operationE − − − 2-7. Error history checking method2. FUNCTION SETTINGS Input check list 2-8. Input checking method2. FUNCTION SETTINGS Name2. FUNCTION SETTINGS − − − −2. FUNCTION SETTINGS 4567Q 2-9. Output checking method2. FUNCTION SETTINGS 4441Q 4953Q2. FUNCTION SETTINGS Panel CPU 2-10. Software version checking method2. FUNCTION SETTINGS ProgrammerSewing machine internal memory 3. READING / WRITING DATA3-1. Handling data 3. READING / WRITING DATA3. READING / WRITING DATA 3-2. Notes on handling CF cards sold separately3-3. Structure of a CF card folder Switch to data read/write mode 3-4. Data read/write modeTurn on the power switch 3. READING / WRITING DATA3. READING / WRITING DATA 3-5. Reading sewing data from CF cardsWhen memory switch No. 755 is ON End data read/write mode3. READING / WRITING DATA When memory switch No. 755 is ON3-6. Writing sewing data to CF cards Select the w 2 data read/write mode3. READING / WRITING DATA 3-7. Reading memory switch data from CF cards3-8. Writing memory switch data to CF cards End data read/write mode3. READING / WRITING DATA 3-9. Reading user program data from CF cards3-10. Writing user program data to CF cards End data read/write mode3. READING / WRITING DATA 3-11. Updating the control programRestoring the control program if an error occurs during updating 3. READING / WRITING DATA 3-12. Writing error log data to CF card3-13. Reading sewing data from floppy disks End data read/write mode5 End data read/write mode 3-14. Writing sewing data to floppy disks3. READING / WRITING DATA 1 Insert the floppy disk into the floppy disk drive5 End data read/write mode 3-15. Reading extended option output data from a CF card3. READING / WRITING DATA 3. READING / WRITING DATA 3-16. Writing extended option output data to CF cards3-17. Reading extended option output data from floppy disks 3 End data read/write mode4-2. Lower shaft and shuttle race mechanisms 4. MECHANICAL DESCRIPTIONS4-1. Needle bar and thread take-up mechanisms 4. MECHANICAL DESCRIPTIONS4-3. Work clamp lifter mechanism Solenoid specifications 4. MECHANICAL DESCRIPTIONS4. MECHANICAL DESCRIPTIONS 4-4. Work clamp lifter mechanism Pneumatic specifications4-5. Intermittent presser foot lifter mechanism 5045Q4. MECHANICAL DESCRIPTIONS 4-6. Intermittent presser foot stroke mechanism4. Stepping clamp connecting rod 5. Stepping clamp arm R 1. Motor assy 2. Upper shaft 3. Stepping clamp camY direction 4-7. Feed mechanismX direction 4. MECHANICAL DESCRIPTIONS4. MECHANICAL DESCRIPTIONS 4-8. Thread trimmer mechanism11. Movable knife lever 12. Movable knife connecting plate 1. Thread trimmer solenoid 2. Solenoid lever 3. Pushing lever4. MECHANICAL DESCRIPTIONS 4-9. Tension release mechanism4-10. Thread wiper mechanism BAS-311G, BAS-326G5. DISASSEMBLY 5. DISASSEMBLY5-1. Covers 2. STOP switch harness Pull out 3. Bolt 4. Plain washer 5-2. Thread wiper mechanism5. DISASSEMBLY 1. Thread wiper solenoid harness Pull out5. DISASSEMBLY Pneumatic specifications5-3. Work clamp arm mechanism BAS-311G, BAS-326GPresser bar Pull downward from presser bar clamp 5-4. Intermittent presser foot lifter mechanism5. DISASSEMBLY 5092Q 5-5. Needle bar mechanism5. DISASSEMBLY 5093Q5094Q 5-6. Upper shaft mechanism5. DISASSEMBLY 5-7. Lower shaft mechanism 5. DISASSEMBLYBAS-311G, BAS-326G 5-8. Feed covers5. DISASSEMBLY 5101Q5-9. Feed mechanism 5. DISASSEMBLY5. DISASSEMBLY 26. Bolts with washer 3 pcs 27. X-feed motor assy47. Bolts 16 pcs 48. X-LM guide 2 pcs 49. Bolts 2 pcs 5. DISASSEMBLY44. Bolts 10 pcs 45. Flat screws 8 pcs 46. Feed bracket 50. X-belt holder 51. X-belt holder plate 52. Bolts 2 pcs5108Q 5-10. Work clamp lifter mechanism Solenoid specifications5. DISASSEMBLY 5-11. Work clamp lifter mechanism Pneumatic specifications 5. DISASSEMBLY5. DISASSEMBLY 5-12. Tension release mechanism5-13. Intermittent presser foot lifter mechanism Solenoid setting plateThread trimmer collar 5-14. Thread trimmer mechanism5. DISASSEMBLY 5-15. Shuttle hook mechanism 5. DISASSEMBLY6. ASSEMBLY 6. ASSEMBLY6-1. Thread trimmer mechanism Bolts with washer 2 pcs 6. ASSEMBLYApply grease 4853Q6. ASSEMBLY 6-2. Intermittent presser foot lifter mechanism6-3. Tension release mechanism Stepping clamp lifter rod adjustmentIndex mark 6-4. Work clamp lifter mechanism Solenoid specifications6. ASSEMBLY Align 6. ASSEMBLYWork clamp lifter plate assy 5162Q6. ASSEMBLY Hook the spring into the arm hole as shown in the illustration5168Q 6-5. Work clamp lifter mechanism Pneumatic specifications6. ASSEMBLY 5169Q5171Q 6. ASSEMBLY5170Q 5172Q6-6. Feed mechanism 6. ASSEMBLY5176Q 6. ASSEMBLYFlat screws 8 pcs 5215Q5179Q 6. ASSEMBLY5178Q Install so that the backlash is 0.01 53. X-feed motor assy 6. ASSEMBLYInstall so that the backlash is 0.01 54. Bolts with washer 3 pcs Temporarily tightenMeasurement position 6. ASSEMBLYX-GT belt tension adjustment 6. ASSEMBLY Y-GT belt tension adjustment 5184QRight Y-LM guide installation 6. ASSEMBLYInside X-LM guide installation 5185Q6-7. Feed covers 6. ASSEMBLYBAS-311G, BAS-326G 6. ASSEMBLYNeedle plate 5191Q6-8. Upper shaft mechanism 6. ASSEMBLY6. ASSEMBLY Install the motor assembly so that the harness is facing downwardInside hole 6-9. Needle bar mechanism6. ASSEMBLY 6. ASSEMBLY 18. Needle bar clamp 19. Needle bar Insert from above 20. Screw6-10. Intermittent presser foot lifter mechanism 6. ASSEMBLY6. ASSEMBLY 3. Lower the needle bar approximately 6.5 mm from its highest position6-11. Lower shaft mechanism 6. ASSEMBLY6. ASSEMBLY Check that the machine pulley turns smoothly 12. Lower shaft assy6. ASSEMBLY 6-12. Shuttle hook mechanism6-13. Thread trimmer mechanism connecting plate6. ASSEMBLY 6-14. Work clamp arm mechanismPneumatic specifications 1. Feed plate 2. Bolts with washer 2pcs 3. Work clamp assyRetainer adjustment 6-14-1. Adjustments after work clamp arm installation6. ASSEMBLY Work clamp height adjustment Solenoid specifications6-15. Thread wiper mechanism 6. ASSEMBLY5154Q 6-16. Covers6. ASSEMBLY 7. ADJUSTMENT 7. ADJUSTMENT7-1. Checking the machine head switch 7. ADJUSTMENT 7-2. Standard thread tension7-2-1. Upper and lower thread tension 7. ADJUSTMENT 7-2-2. Thread take-up spring7-2-3. Arm thread guide R Thread take-up spring height7-5. Adjusting the driver needle guard 7-3. Adjusting the needle bar height7-4. Adjusting the needle bar lift amount 7. ADJUSTMENT7-8. Rotary hook lubrication amount 7-6. Adjusting the needle clearance7-7. Adjusting the shuttle race thread guide 7. ADJUSTMENT7-9. Adjusting the position of the movable knife 7. ADJUSTMENT7. ADJUSTMENT 7. Turn the pulley 1 by hand to move the needle bar to its lowest position7-10. Replacing the movable and fixed knives 7. ADJUSTMENTEnd feed plate installation mode 7-10-1. Installing the feed plate7. ADJUSTMENT All indicators switch off7. ADJUSTMENT 7-11. Adjusting the thread wiper7-12. Presser foot installation position Changing the installation position of stepping clamp link A 7-13. Changing the intermittent stroke7. ADJUSTMENT 7. ADJUSTMENT Stepping clamp connecting rod position adjustment 7. ADJUSTMENT 7-14. Adjusting the work clamp lift amount7-15. Adjusting the air pressure pneumatic specifications Solenoid specifications7. ADJUSTMENT 7-16. Adjusting the thread trimmer cam position7-17. Belt tension adjustment X-GT belt7-18. Adjusting the tension release amount 7. ADJUSTMENT Y-GT belt7-19. Adjusting the backlash of the lower shaft gear 7. ADJUSTMENT7. ADJUSTMENT 7-20. Adjusting the home position7-20-1. Work clamp lift home position Solenoid specificationsRepeat steps 4 and 5 to adjust the home position 7-20-2. X-Y feed home position7. ADJUSTMENT End adjustment modeEnd adjustment mode 7. ADJUSTMENTRepeat steps 5 and 6 to adjust the home position 5208Q 5276Q5209Q 7-21. Adjusting the needle up stop home position7. ADJUSTMENT 4700QAdjustment method 7-22. Adjusting the needle up stop position7. ADJUSTMENT 7. ADJUSTMENT End adjustment modeDANGER 8-1. Precautions while carrying out adjustments8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM8. ELECTRICAL MECHANISM 8-2. Inside the control box and operation panel structurePower supply motor P.C. board Main P.C. board4590Q 8-3. Description of fuses8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM 8-4. Description of connectors8-4-1. Connector positions Main P.C. boardBAS-311G, BAS-326G Power supply motor P.C. board8. ELECTRICAL MECHANISM PMD P.C. board 4592Q4594Q 8. ELECTRICAL MECHANISM Panel P.C. boardBAS-311G, BAS-326G Feed mechanism 8-4-2. Symptoms when there are poor connections8. ELECTRICAL MECHANISM Work clamp mechanismSewing operations 8. ELECTRICAL MECHANISMThread trimming mechanism 4713Q 5243Q 4714Q5245Q 5246Q 5247Q 5248Q 5249Q 8. ELECTRICAL MECHANISMOther Description of symbols 8-5. Troubleshooting8-5-1. Diagnosis flowchart “Problem” symbol in the “8-5-2. Remedy” lists5251Q 8. ELECTRICAL MECHANISMBAS-311G, BAS-326G 5252Q 8. ELECTRICAL MECHANISMBAS-311G, BAS-326G 5253Q 8. ELECTRICAL MECHANISMBAS-311G, BAS-326G DANGER 8-5-2. RemedyBefore carrying out adjustment 8. ELECTRICAL MECHANISM4877Q 8. ELECTRICAL MECHANISM4876Q 4878Q8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM 5087Q 8. ELECTRICAL MECHANISM5086Q 8. ELECTRICAL MECHANISM 4885Q4884Q 8. ELECTRICAL MECHANISM4886Q 4888Q 8. ELECTRICAL MECHANISMWork clamp does not rise 8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM 8. ELECTRICAL MECHANISM 4890Q 8. ELECTRICAL MECHANISM4889Q 4891Q5089Q 8. ELECTRICAL MECHANISM5088Q 4892QSwitch-related errors 9. TABLE OF ERROR CODES9. TABLE OF ERROR CODES DANGERWork clamp-related errors 9. TABLE OF ERROR CODES Upper shaft motor-related errorsFeed mechanism-related errors E110E401 9. TABLE OF ERROR CODESCommunication and memory-related errors E402P.C. board-related errors 9. TABLE OF ERROR CODES Data editing-related errorsDevice-related errors E500Problem 10. TROUBLESHOOTING10. TROUBLESHOOTING CauseCause 10. TROUBLESHOOTINGProblem Remedypower is turned on and 10. TROUBLESHOOTINGProblem switchBAS-311G, BAS-326G 11. 7-SEGMENT DISPLAY11. 7-SEGMENT DISPLAY I5060885B SERVICE MANUALPrinted in Japan 2005.07. B