Brother BAS-311G service manual 126, CN2 Main

Page 133

8. ELECTRICAL MECHANISM

Problem

#2 When the power is turned on, nothing is displayed in the PROGRAM No. display or the menu display.

 

 

 

 

 

 

 

 

 

Cause

 

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

Control program does not operate.

Insert a CF card containing the control program,

Main P.C. board

 

 

 

turn on the power switch and update the program

 

 

 

 

version. (Refer to “3-11. Updating the control

 

 

 

 

program”.)

 

 

 

 

 

 

 

 

 

 

Problem

#3 When the power is turned on, an error code is displayed.

 

 

 

 

 

 

 

 

 

 

 

 

Cause

 

 

Inspection/Remedy/Adjustment

Replacement if a malfunction

1.

If [E025] or [E035] is displayed,

1)

Check if the foot switch is still depressed.

Treadle unit

 

the foot switch is still depressed.

2)

Check if there is a harness short-circuit.

Two-pedal foot switch

 

 

 

3)

Check that connector P6 (FOOT) is inserted

 

 

 

 

 

into the main P.C. board.

 

 

 

2.

If [E055] is displayed, there is a

1)

Check that the machine head switch is OFF.

Machine head switch

 

malfunction of the machine head

2)

Check if there is a harness short-circuit.

 

 

switch.

3)

Check that connector P9 (HEAD-SW) is

 

 

 

 

 

inserted into the main P.C. board.

 

 

3. If [E065] is displayed, one of the

Check that connector P1

(PANEL)

is inserted

Panel P.C. board

 

keys on the operation panel is

into

the main

P.C. board,

and

that

connector

Panel harness

 

still depressed.

CN2

(MAIN)

is inserted into

the panel P.C.

 

 

 

 

board.

 

 

 

 

 

4.

If [E403] is displayed, there is a

1)

Check that connector P17 (M-MOTOR) is

Harness

 

poor

connection between the

 

inserted into the main P.C. board, and that

Power supply motor P.C.

 

main P.C. board and the PMD

 

connector P6 (MAIN) is inserted into the

board

 

P.C. board.

 

power supply motor P.C. board.

 

Main P.C. board

 

 

 

2)

Check if there is a harness short-circuit.

 

5.

If [E401] is displayed, there is a

1)

Check that connector P1 (MAIN) is inserted

Main P.C. board

 

poor

connection between the

 

into the power supply motor P.C. board.

 

 

main P.C. board and the power

2)

Check if there is a harness short-circuit.

 

 

supply motor P.C. board.

 

 

 

 

 

 

 

 

6.

If [E450] or [E452] is displayed,

1)

Check that connector P3 (HEAD-M) is

Machine head memory

 

the

machine head memory

 

inserted into the power supply motor P.C.

 

 

cannot be verified.

 

board.

 

 

 

 

 

 

 

 

2)

Check if there is a harness short-circuit.

 

7. If [E700] is displayed, there is an

1)

Check that the power supply voltage at the

 

 

abnormal rise in the power

 

wall outlet is within the range of the

 

 

supply voltage.

 

specification voltage +/- 10%.

 

 

 

 

 

2)

Refer to check items #1-2 and #1-3.

 

8. If [E705] is displayed, there is an

1)

Check that the power supply voltage at the

 

 

abnormal drop in the power

 

wall outlet is within the range of the

 

 

supply voltage.

 

specification voltage +/- 10%.

 

 

 

 

 

2)

Refer to check items #1-2 and #1-3.

 

9.

If [E740] is displayed, there is a

1)

Check if there are any thread scraps blocking

DC fan motor assembly

 

malfunction of the cooling fan.

 

the cooling fan.

 

 

 

 

 

 

 

2)

Check that connector P22 (FAN) is inserted

 

 

 

 

 

into the main P.C. board.

 

 

 

126

BAS-311G, BAS-326G

Page 132 Page 134
Image 133
Page 132 Page 134
Contents BAS-311G BAS-326G Safety Instructions Environmental requirements Iii Sewing5222Q 4905Q Contents Table of Error Codes Specifications List of special functions when power is turned on Function SettingsList of advanced functions When Speed indicator is illuminatedMemory switches that have been changed from Memory switch setting method AdvancedDefault settings Ending setting modeOFF List of memory switch settingsFor solenoid specifications 1 pedal Work clamp settingsFor pneumatic specifications 2 pedal For solenoid specifications051 Sewing machine motor settings Feed settings User program settings Operation panel settingsDevice settings Data editing settings554 Thread breakage detector Maintenance settings Error processing settingsSpecifications and destination settings Unique machine settings Setting the work clamp modeSolenoid specifications, single pedal standard operations Solenoid specifications, single pedal sequence operationPneumatic specifications, 2 pedal sequence operation Pneumatic specifications, 2 pedal standard operationsStitch counter checking method Clearing the cumulative number of stitchesError history checking method Input check list Input checking methodSele On / oFF Option input IN10 Output checking method CUt Software version checking method Handling data Reading / Writing Data\ISMS0102.SEW Structure of a CF card folderTurn on the power switch Switch to data read/write mode Data read/write modeRead/write mode list End data read/write mode When memory switch No is onReading sewing data from CF cards Writing sewing data to CF cards Select the w 2 data read/write modeWriting memory switch data to CF cards Reading memory switch data from CF cardsWriting user program data to CF cards Reading user program data from CF cardsUpdating the control program Reading sewing data from floppy disks Writing error log data to CF cardInsert the floppy disk into the floppy disk drive Writing sewing data to floppy disks Reading extended option output data from a CF card Reading extended option output data from floppy disks Writing extended option output data to CF cardsLower shaft and shuttle race mechanisms Needle bar and thread take-up mechanismsWork clamp lifter mechanism Solenoid specifications Intermittent presser foot lifter mechanism Work clamp lifter mechanism Pneumatic specificationsIntermittent presser foot stroke mechanism Direction Feed mechanismThread trimmer mechanism Thread wiper mechanism Tension release mechanismCovers Disassembly5090Q Work clamp arm mechanism Pneumatic specificationsPresser bar Pull downward from presser bar clamp Needle bar mechanism Upper shaft mechanism Lower shaft mechanism Feed covers 5103Q 5104Q 5106Q 5107Q 5118Q Work clamp lifter link Pull backward 5109Q Tension bracket assy Thread trimmer collar Shuttle hook mechanism Assembly Apply grease Stepping clamp lifter rod adjustment Index mark Work clamp lifter plate assy 5164Q 5168Q 5170Q 5171Q 5173Q Flat screws 8 pcs 5178Q Install so that the backlash is 0.01 GT belt tension adjustment 5184Q Right Y-LM guide installation Inside X-LM guide installationFeed bracket Needle plate 5140Q 4644Q Inside hole Inside hole Cut section 5195Q 5198Q 5199Q 5144Q Mating mark Movable knife 5201Q 5200Q Work clamp height adjustment Solenoid specifications Retainer adjustmentWork clamp height adjustment Pneumatic specifications Work clamp adjustment5153Q Shuttle race cover assy Motor cover L Checking the machine head switch AdjustmentStandard thread tension Thread take-up spring tension Thread take-up spring heightAdjusting the needle bar lift amount Adjusting the needle bar heightAdjusting the driver needle guard Adjusting the shuttle race thread guide Adjusting the needle clearanceRotary hook lubrication amount Adjusting the position of the movable knife 4950Q 5237Q 5238Q Replacing the movable and fixed knives End feed plate installation mode Installing the feed platePresser foot installation position Adjusting the thread wiperChanging the intermittent stroke Changing the installation position of stepping clamp link aStepping clamp connecting rod position adjustment Adjusting the air pressure pneumatic specifications Adjusting the work clamp lift amountSolenoid specifications Pneumatic specificationsBelt tension adjustment Adjusting the thread trimmer cam position101 GT beltAdjustment Y-GT belt Adjusting the tension release amount102 103 Adjusting the backlash of the lower shaft gear104 Adjusting the home position105 Y feed home position106 107 Adjusting the needle up stop home positionAdjustment method Adjusting the needle up stop position108 109 110 Precautions while carrying out adjustmentsElectric shocks Injury111 Inside the control box and operation panel structure112 Description of fuses113 Description of connectorsElectrical Mechanism PMD P.C. board 114115 Feed mechanism 116Work clamp mechanism Thread trimming mechanism 117Sewing operations Other 118Description of symbols Troubleshooting119 120 121 122 123 Before carrying out adjustmentFig. C OK if there is Continuity between 124Panel 125CN2 Main 126127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 Problem Cause Remedy Reference Upper thread breaksLower thread breaks Needle is broken143 144 Segment DisplayI5060885B
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BAS-311G specifications

The Brother BAS-311G is a state-of-the-art industrial sewing machine designed specifically for advanced garment manufacturing. This high-speed, fully automated model is engineered to meet the demands of modern production environments, offering exceptional performance and versatility.

One of the key features of the BAS-311G is its automatic thread trimmer, which significantly reduces downtime and enhances productivity. This machine is capable of cutting the thread at the end of each seam, ensuring a clean finish and minimizing the need for manual intervention. This feature is especially beneficial in high-volume production settings where efficiency is paramount.

The BAS-311G also boasts an advanced automatic needle positioning system, allowing users to set the needle to stop in the up or down position. This functionality enhances control over the sewing process, making it easier to pivot and maneuver fabric, which is crucial for intricate designs and patterns. This precision is a boon for manufacturers looking to improve the quality of their finished products.

Another notable aspect of the BAS-311G is its versatility. The machine is equipped with an adjustable stitch length feature, enabling users to customize stitches according to specific project needs. This flexibility allows for the production of a wide range of garments, from delicate fabrics to thicker materials, making it suitable for various industries including fashion, sportswear, and workwear.

In terms of technology, the BAS-311G incorporates Brother's pioneering technology that ensures smooth and reliable operation. The machine includes a digital control panel, which simplifies the selection of stitch patterns and settings. Users can easily navigate through options, making adjustments on the fly, which is crucial in a fast-paced production environment.

Built with durability in mind, the BAS-311G is engineered for heavy-duty use with high-quality materials that withstand the rigors of daily operation. Its robust construction ensures longevity and sustained performance, making it a wise investment for businesses seeking reliable machinery.

In summary, the Brother BAS-311G is an excellent choice for manufacturers looking to enhance their sewing operations. With features such as automatic thread trimming, adjustable stitch lengths, and advanced technology integration, it stands out as a top-tier industrial sewing machine designed to improve efficiency and quality in garment production.
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