S-7300A
CONTENTS
1. MACHINE SPECIFICATIONS ...............
1
2. NOTES ON HANDLING .........................
2
3. FUNCTION SETTINGS ..........................
3
3-1. List of special functions when power is
turned on.......................................................... 3
3-2. Memory switch setting method (Advanced) .... 5
3-3. List of memory switch settings ........................ 6
3-4. Energy saving mode setting method ............. 21
3-5. Input checking method .................................. 23
3-6. Output checking method................................ 25
3-7. Protect setting ................................................ 27
3-8. Error history ................................................... 30
3-9. Maintenance information ............................... 32
3-10. Software version checking method ............. 34
3-11. Software version updating method .............. 35
3-12. Serial number checking method .................. 37
4. MECHANICAL DESCRIPTIONS .........
38
4-1. Upper shaft and needle bar mechanism ....... 38
4-2. Lower shaft and rotary hook mechanism ...... 39
4-3. Feed mechanism ........................................... 40
4-4. Lubrication mechanism.................................. 41
4-5. Thread trimming mechanism ......................... 42
4-6. Tension release and presser foot mechanism
(Other than premier specifications) ............... 47
4-7. Tension release and presser foot mechanism
(Premier specifications) ................................. 48
4-8. Thread wiper mechanism .............................. 49
5. DISASSEMBLY ...................................
50
5-1. Knee lifter assembly ...................................... 50
5-2. Cable tie ........................................................ 51
5-3. Connector ...................................................... 51
5-4. Covers ........................................................... 52
5-4-1. Top cover and pulley cover ................. 52
5-4-2. Panel ................................................... 53
5-5. Tension release wire and thread trimmer
solenoid ......................................................... 54
5-6. Wick holder and oil tube
(-[]0[] specifications only) ............................... 56
5-7. Oil tank and bed bottom cover ...................... 57
5-7-1. Oil tank ................................................ 57
5-7-2. Bed bottom cover ................................ 58
5-8. Stand ............................................................. 58
5-9. Needle and presser foot ................................ 59
5-10. Hand switch and X-over seam sensor ......... 60
5-10-1. Cord holder and Thread wiper
device assembly ............................... 60
5-10-2. Fase plate, X-over seam sensor
and Hand switch assembly .............. 61
5-11. Tension mechanism (Other than
premier specifications) ................................ 62
5-12. Tension mechanism (Premier
specifications) ............................................. 63
5-13. Needle plate, feed dog, etc. ........................ 64
5-14. Bobbin case, rotary hook and thread
trimmer mechanism ..................................... 65
5-15. Feed mechanism ........................................ 66
5-15-1. Disassembling the feed
mechanism ....................................... 66
5-15-2. Disassembling the feed bar unit ....... 67
5-16. Presser foot mechanism ............................. 68
5-17. Knee lifter lever mechanism ........................ 69
5-18. Tension pulley ............................................. 69
5-19. Needle bar and thread take-up
mechanism .................................................. 70
5-20. Pulley and timing pulley U ........................... 71
5-21. Main shaft motor ......................................... 72
5-22. Timing belt................................................... 73
5-23. Lower shaft, lower shaft gear and lower
shaft fan ...................................................... 74
5-24. Plunger, rotary hook shaft, rotary hook
shaft gear and thread trimmer cam ............. 75
5-25. Thread wiper ............................................... 76
6. ASSEMBLY .........................................
77
6-1. Plunger, rotary hook shaft, rotary hook
shaft gear and thread trimmer cam ............... 78
6-2. Lower shaft, lower shaft gear and lower
shaft fan ........................................................ 79
6-3. Upper shaft mechanism ................................ 80
6-4. Timing belt..................................................... 81
6-5. Pulley and main shaft motor ......................... 82
6-6. Tension pulley ............................................... 85
6-7. Knee lifter lever mechanism .......................... 85
6-8. Needle bar and thread take-up mechanism .. 86
6-9. Presser foot mechanism ............................... 87
6-10. Feed bar unit mechanism ........................... 88
6-11. Feed mechanism ........................................ 89
6-12. Bobbin case, hook and thread trimmer
mechanism .................................................. 93
6-13. Oil tank and bed bottom cover .................... 94
6-13-1. Bed bottom cover ............................. 94
6-13-2. Oil tank ............................................. 95
6-14. Stand ........................................................... 96
6-15. Needle and presser foot .............................. 97
6-16. Hand switch and X-over seam sensor ........ 98
