Please read this manual before making any adjustments
SERVICE MANUAL
BAS-311G BAS-326G
PROGRAMMABLE ELECTRONIC PATTERN SEWER
1 Safety indications and their meanings
SAFETY INSTRUCTIONS
Symbols
Indications
2 Notes on safety
Installation
DANGER
Environmental requirements
Maintenance and inspection
Cleaning
Sewing
If an error occurs in machine operation, or if abnormal
Motor cover
3 Warning labels
Tension release
solenoid cover
SPECIFICATIONS
CONTENTS
FUNCTION SETTINGS
DISASSEMBLY
7. ADJUSTMENT
6. ASSEMBLY
9. TABLE OF ERROR CODES
10. TROUBLESHOOTING
1. SPECIFICATIONS
1. SPECIFICATIONS
2. FUNCTION SETTINGS
2-1. List of special functions when power is turned on
2. FUNCTION SETTINGS
2. FUNCTION SETTINGS
2-2. List of advanced functions
When SPEED indicator is illuminated
4550Q
2. FUNCTION SETTINGS
2-3. Memory switch setting method Advanced
memory switches that have been changed from
default settings
2. FUNCTION SETTINGS
2-4. List of memory switch settings
Initial value
range
Work clamp settings
2. FUNCTION SETTINGS
For solenoid specifications 1 pedal
For pneumatic specifications 2 pedal
Thread winding
2. FUNCTION SETTINGS
Sewing machine motor settings
2. FUNCTION SETTINGS
Feed settings
2. FUNCTION SETTINGS
2. FUNCTION SETTINGS
Operation panel settings
User program settings
2. FUNCTION SETTINGS
Data editing settings
Device settings
2. FUNCTION SETTINGS
Error processing settings
2. FUNCTION SETTINGS
Maintenance settings
Specifications and destination settings
2. FUNCTION SETTINGS
2-5. Setting the work clamp mode
Unique machine settings
Solenoid specifications, single pedal standard operations
2. FUNCTION SETTINGS
2-6. Stitch counter checking method
Pneumatic specifications, 2 pedal standard operations
Pneumatic specifications, 2 pedal sequence operation
2-7. Error history checking method
2. FUNCTION SETTINGS
E − − −
2. FUNCTION SETTINGS
2-8. Input checking method
Input check list
Name
− − − −
2. FUNCTION SETTINGS
2. FUNCTION SETTINGS
2. FUNCTION SETTINGS
2-9. Output checking method
4567Q
4441Q 4953Q
2. FUNCTION SETTINGS
2. FUNCTION SETTINGS
2-10. Software version checking method
Panel CPU
Programmer
3-1. Handling data
3. READING / WRITING DATA
Sewing machine internal memory
3. READING / WRITING DATA
3-2. Notes on handling CF cards sold separately
3-3. Structure of a CF card folder
3. READING / WRITING DATA
Turn on the power switch
3-4. Data read/write mode
Switch to data read/write mode
3. READING / WRITING DATA
When memory switch No. 755 is ON
3-5. Reading sewing data from CF cards
3. READING / WRITING DATA
End data read/write mode
3-6. Writing sewing data to CF cards
When memory switch No. 755 is ON
3. READING / WRITING DATA
Select the w 2 data read/write mode
3-8. Writing memory switch data to CF cards
3-7. Reading memory switch data from CF cards
3. READING / WRITING DATA
End data read/write mode
3-10. Writing user program data to CF cards
3-9. Reading user program data from CF cards
3. READING / WRITING DATA
End data read/write mode
3-11. Updating the control program
Restoring the control program if an error occurs during updating
3. READING / WRITING DATA
3-13. Reading sewing data from floppy disks
3-12. Writing error log data to CF card
3. READING / WRITING DATA
End data read/write mode
3. READING / WRITING DATA
3-14. Writing sewing data to floppy disks
5 End data read/write mode
1 Insert the floppy disk into the floppy disk drive
3-15. Reading extended option output data from a CF card
3. READING / WRITING DATA
5 End data read/write mode
3-17. Reading extended option output data from floppy disks
3-16. Writing extended option output data to CF cards
3. READING / WRITING DATA
3 End data read/write mode
4-1. Needle bar and thread take-up mechanisms
4. MECHANICAL DESCRIPTIONS
4-2. Lower shaft and shuttle race mechanisms
4. MECHANICAL DESCRIPTIONS
4. MECHANICAL DESCRIPTIONS
4-3. Work clamp lifter mechanism Solenoid specifications
4-5. Intermittent presser foot lifter mechanism
4-4. Work clamp lifter mechanism Pneumatic specifications
4. MECHANICAL DESCRIPTIONS
5045Q
4. Stepping clamp connecting rod 5. Stepping clamp arm R
4-6. Intermittent presser foot stroke mechanism
4. MECHANICAL DESCRIPTIONS
1. Motor assy 2. Upper shaft 3. Stepping clamp cam
X direction
4-7. Feed mechanism
Y direction
4. MECHANICAL DESCRIPTIONS
11. Movable knife lever 12. Movable knife connecting plate
4-8. Thread trimmer mechanism
4. MECHANICAL DESCRIPTIONS
1. Thread trimmer solenoid 2. Solenoid lever 3. Pushing lever
4-10. Thread wiper mechanism
4-9. Tension release mechanism
4. MECHANICAL DESCRIPTIONS
BAS-311G, BAS-326G
5. DISASSEMBLY
5-1. Covers
5. DISASSEMBLY
5. DISASSEMBLY
5-2. Thread wiper mechanism
2. STOP switch harness Pull out 3. Bolt 4. Plain washer
1. Thread wiper solenoid harness Pull out
5-3. Work clamp arm mechanism
Pneumatic specifications
5. DISASSEMBLY
BAS-311G, BAS-326G
5-4. Intermittent presser foot lifter mechanism
5. DISASSEMBLY
Presser bar Pull downward from presser bar clamp
5. DISASSEMBLY
5-5. Needle bar mechanism
5092Q
5093Q
5-6. Upper shaft mechanism
5. DISASSEMBLY
5094Q
5. DISASSEMBLY
5-7. Lower shaft mechanism
5. DISASSEMBLY
5-8. Feed covers
BAS-311G, BAS-326G
5101Q
5. DISASSEMBLY
5-9. Feed mechanism
26. Bolts with washer 3 pcs 27. X-feed motor assy
5. DISASSEMBLY
44. Bolts 10 pcs 45. Flat screws 8 pcs 46. Feed bracket
5. DISASSEMBLY
47. Bolts 16 pcs 48. X-LM guide 2 pcs 49. Bolts 2 pcs
50. X-belt holder 51. X-belt holder plate 52. Bolts 2 pcs
5-10. Work clamp lifter mechanism Solenoid specifications
5. DISASSEMBLY
5108Q
5. DISASSEMBLY
5-11. Work clamp lifter mechanism Pneumatic specifications
5-13. Intermittent presser foot lifter mechanism
5-12. Tension release mechanism
5. DISASSEMBLY
Solenoid setting plate
5-14. Thread trimmer mechanism
5. DISASSEMBLY
Thread trimmer collar
5. DISASSEMBLY
5-15. Shuttle hook mechanism
6. ASSEMBLY
6-1. Thread trimmer mechanism
6. ASSEMBLY
Apply grease
6. ASSEMBLY
Bolts with washer 2 pcs
4853Q
6-3. Tension release mechanism
6-2. Intermittent presser foot lifter mechanism
6. ASSEMBLY
Stepping clamp lifter rod adjustment
6-4. Work clamp lifter mechanism Solenoid specifications
6. ASSEMBLY
Index mark
Work clamp lifter plate assy
6. ASSEMBLY
Align
5162Q
Hook the spring into the arm hole as shown in the illustration
6. ASSEMBLY
6. ASSEMBLY
6-5. Work clamp lifter mechanism Pneumatic specifications
5168Q
5169Q
5170Q
6. ASSEMBLY
5171Q
5172Q
6. ASSEMBLY
6-6. Feed mechanism
Flat screws 8 pcs
6. ASSEMBLY
5176Q
5215Q
6. ASSEMBLY
5178Q
5179Q
Install so that the backlash is 0.01
6. ASSEMBLY
Install so that the backlash is 0.01 53. X-feed motor assy
54. Bolts with washer 3 pcs Temporarily tighten
6. ASSEMBLY
X-GT belt tension adjustment
Measurement position
5184Q
6. ASSEMBLY Y-GT belt tension adjustment
Inside X-LM guide installation
6. ASSEMBLY
Right Y-LM guide installation
5185Q
6. ASSEMBLY
6-7. Feed covers
Needle plate
6. ASSEMBLY
BAS-311G, BAS-326G
5191Q
6. ASSEMBLY
6-8. Upper shaft mechanism
Install the motor assembly so that the harness is facing downward
6. ASSEMBLY
6-9. Needle bar mechanism
6. ASSEMBLY
Inside hole
18. Needle bar clamp 19. Needle bar Insert from above 20. Screw
6. ASSEMBLY
6. ASSEMBLY
6-10. Intermittent presser foot lifter mechanism
3. Lower the needle bar approximately 6.5 mm from its highest position
6. ASSEMBLY
6. ASSEMBLY
6-11. Lower shaft mechanism
Check that the machine pulley turns smoothly 12. Lower shaft assy
6. ASSEMBLY
6-13. Thread trimmer mechanism
6-12. Shuttle hook mechanism
6. ASSEMBLY
connecting plate
Pneumatic specifications
6-14. Work clamp arm mechanism
6. ASSEMBLY
1. Feed plate 2. Bolts with washer 2pcs 3. Work clamp assy
6. ASSEMBLY
6-14-1. Adjustments after work clamp arm installation
Retainer adjustment
Work clamp height adjustment Solenoid specifications
6. ASSEMBLY
6-15. Thread wiper mechanism
6-16. Covers
6. ASSEMBLY
5154Q
7. ADJUSTMENT
7-1. Checking the machine head switch
7. ADJUSTMENT
7-2. Standard thread tension
7-2-1. Upper and lower thread tension
7. ADJUSTMENT
7-2-3. Arm thread guide R
7-2-2. Thread take-up spring
7. ADJUSTMENT
Thread take-up spring height
7-4. Adjusting the needle bar lift amount
7-3. Adjusting the needle bar height
7-5. Adjusting the driver needle guard
7. ADJUSTMENT
7-7. Adjusting the shuttle race thread guide
7-6. Adjusting the needle clearance
7-8. Rotary hook lubrication amount
7. ADJUSTMENT
7. ADJUSTMENT
7-9. Adjusting the position of the movable knife
7. Turn the pulley 1 by hand to move the needle bar to its lowest position
7. ADJUSTMENT
7. ADJUSTMENT
7-10. Replacing the movable and fixed knives
7. ADJUSTMENT
7-10-1. Installing the feed plate
End feed plate installation mode
All indicators switch off
7-11. Adjusting the thread wiper
7-12. Presser foot installation position
7. ADJUSTMENT
7-13. Changing the intermittent stroke
7. ADJUSTMENT
Changing the installation position of stepping clamp link A
7. ADJUSTMENT Stepping clamp connecting rod position adjustment
7-15. Adjusting the air pressure pneumatic specifications
7-14. Adjusting the work clamp lift amount
7. ADJUSTMENT
Solenoid specifications
7-17. Belt tension adjustment
7-16. Adjusting the thread trimmer cam position
7. ADJUSTMENT
X-GT belt
7. ADJUSTMENT Y-GT belt
7-18. Adjusting the tension release amount
7. ADJUSTMENT
7-19. Adjusting the backlash of the lower shaft gear
7-20-1. Work clamp lift home position
7-20. Adjusting the home position
7. ADJUSTMENT
Solenoid specifications
7. ADJUSTMENT
7-20-2. X-Y feed home position
Repeat steps 4 and 5 to adjust the home position
End adjustment mode
Repeat steps 5 and 6 to adjust the home position
7. ADJUSTMENT
End adjustment mode
5208Q 5276Q
7. ADJUSTMENT
7-21. Adjusting the needle up stop home position
5209Q
4700Q
7-22. Adjusting the needle up stop position
7. ADJUSTMENT
Adjustment method
End adjustment mode
7. ADJUSTMENT
8. ELECTRICAL MECHANISM
8-1. Precautions while carrying out adjustments
DANGER
8. ELECTRICAL MECHANISM
Power supply motor P.C. board
8-2. Inside the control box and operation panel structure
8. ELECTRICAL MECHANISM
Main P.C. board
8-3. Description of fuses
8. ELECTRICAL MECHANISM
4590Q
8-4-1. Connector positions
8-4. Description of connectors
8. ELECTRICAL MECHANISM
Main P.C. board
8. ELECTRICAL MECHANISM PMD P.C. board
Power supply motor P.C. board
BAS-311G, BAS-326G
4592Q
8. ELECTRICAL MECHANISM Panel P.C. board
BAS-311G, BAS-326G
4594Q
8. ELECTRICAL MECHANISM
8-4-2. Symptoms when there are poor connections
Feed mechanism
Work clamp mechanism
Thread trimming mechanism
8. ELECTRICAL MECHANISM
Sewing operations
4713Q 5243Q 4714Q
8. ELECTRICAL MECHANISM
Other
5245Q 5246Q 5247Q 5248Q 5249Q
8-5-1. Diagnosis flowchart
8-5. Troubleshooting
Description of symbols
“Problem” symbol in the “8-5-2. Remedy” lists
8. ELECTRICAL MECHANISM
BAS-311G, BAS-326G
5251Q
8. ELECTRICAL MECHANISM
BAS-311G, BAS-326G
5252Q
8. ELECTRICAL MECHANISM
BAS-311G, BAS-326G
5253Q
Before carrying out adjustment
8-5-2. Remedy
DANGER
8. ELECTRICAL MECHANISM
4876Q
8. ELECTRICAL MECHANISM
4877Q
4878Q
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
5086Q
5087Q
4885Q
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
4886Q
4884Q
8. ELECTRICAL MECHANISM
Work clamp does not rise
4888Q
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
8. ELECTRICAL MECHANISM
4889Q
8. ELECTRICAL MECHANISM
4890Q
4891Q
5088Q
8. ELECTRICAL MECHANISM
5089Q
4892Q
9. TABLE OF ERROR CODES
9. TABLE OF ERROR CODES
Switch-related errors
DANGER
Feed mechanism-related errors
9. TABLE OF ERROR CODES Upper shaft motor-related errors
Work clamp-related errors
E110
Communication and memory-related errors
9. TABLE OF ERROR CODES
E401
E402
Device-related errors
9. TABLE OF ERROR CODES Data editing-related errors
P.C. board-related errors
E500
10. TROUBLESHOOTING
10. TROUBLESHOOTING
Problem
Cause
Problem
10. TROUBLESHOOTING
Cause
Remedy
Problem
10. TROUBLESHOOTING
power is turned on and
switch
11. 7-SEGMENT DISPLAY
11. 7-SEGMENT DISPLAY
BAS-311G, BAS-326G
Printed in Japan
SERVICE MANUAL
I5060885B
2005.07. B