Brother S-7780A Instruction manual

INSTRUCTION MANUAL

S-7780A

Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.

SINGLE NEEDLE DIRECT DRIVE LOCK STITCHER WITH SIDE CUTTER, ELECTRONIC FEEDING SYSTEM AND THREAD TRIMMER

Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions and the explanations given in the instruction manual.

With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up, and consequently there is always a danger of injury that can be caused by these parts. Follow the instructions from training personnel and instructors regarding safe and correct operation before operating the machine so that you will know how to use it correctly.

S-7780A

SAFETY INSTRUCTIONS

[1] Safety indications and their meanings

This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure 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

DANGER

CAUTION

Symbols

WARNING

· · · · ·

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 symbol ( ) indicates something that you must not do.

This symbol ( ) indicates something that you must do. The picture inside the circle indicates the

nature of the thing that must be done. (For example, the symbol at left means “you must make the ground connection”.)

The instructions which follow this term indicate situations where failure to follow the instructions will result in death or serious injury.

The instructions which follow this term indicate situations where failure to follow the instructions could result in death or serious injury.

The instructions which follow this term indicate situations where failure to follow the instructions may result in minor or moderate injury.

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[2] Notes on safety

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the cover of the control box. Touching areas where high voltages are present can result in severe injury.

Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may occur.

If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and disconnect the power plug from the electrical outlet, and then contact the place of purchase or a qualified technician.

DANGER

WARNING

CAUTION

Environmental requirements

Use the sewing machine in an area which is free from sources of strong electrical noise such as electrical line noise or static electric noise. Sources of strong electrical noise may cause problems with correct operation.

Any fluctuations in the power supply voltage should be within 10% of the rated voltage for the machine. Voltage fluctuations which are greater than this may cause problems with correct operation.

The power supply capacity should be greater than the requirements for the sewing machine's power consumption. Insufficient power supply capacity may cause problems with correct operation.

Machine installation should only be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

The sewing machine weighs approximately 37 kg (82lb). The installation should be carried out by two or more people.

Do not connect the power cord until installation is complete. The machine may operate if the treadle is depressed by mistake, which could result in injury.

Turn off the power switch before inserting or removing the plug, otherwise damage to the control box could result.

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.

When securing the cords, do not bend the cords excessively or fasten them too hard with staples, otherwise there is the danger that fire or electric shocks could occur.

Installation

The ambient temperature should be within the range of 5C to 35C during use. Temperatures which are lower or higher than this may cause problems with correct operation.

The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in any devices. Excessively dry or humid environments and dew formation may cause problems with correct operation.

In the event of an electrical storm, turn off the power and disconnect the power cord from the wall outlet. Lightning may cause problems with correct operation.

Do not connect anything to the USB port other than the USB media. If this is not observed, problems with operation may result.

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhea. Keep the oil out of the reach of children.

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S-7780A

This sewing machine should only be used by operators who have received the necessary training in safe use beforehand.

The sewing machine should not be used for any applications other than sewing.

Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle breaks, parts of the broken needle may enter your eyes and injury may result.

Turn off the power switch at the following times. The machine may operate if the treadle is depressed by mistake, which could result in injury.

 When threading the needle  When replacing the bobbin and needle  When not using the machine and when leaving

the machine unattended

If using a work table which has casters, the casters should be secured in such a way so that they cannot move.

CAUTION

Sewing

Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.

Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to the machine.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

If an error occurs in machine operation, or if abnormal noises or smells are noticed, immediately turn off the power switch. Then contact your nearest Brother dealer or a qualified technician.

If the machine develops a problem, contact your nearest Brother dealer or a qualified technician.

Cleaning

Turn off the power switch before carrying out cleaning. The machine may operate if the treadle is depressed by mistake, which could result in injury.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

Maintenance and inspection

Maintenance and inspection of the sewing machine should only be carried out by a qualified technician.

Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.

Turn off the power switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the treadle is depressed by mistake, which could result in injury.

 When carrying out inspection, adjustment and

maintenance

 When replacing consumable parts such as the

rotary hook and knife

Always be sure to turn off the power switch and then wait one minute before opening the pulley cover. If you touch the surface of the motor, it may cause burns.

If the power switch needs to be left on when carrying out some adjustment, make sure that you switch the sewing machine to maintenance mode. Pay careful attention to safety.

Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhea. Keep the oil out of the reach of children.

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

When replacing parts and installing optional accessories, be sure to use only genuine Brother parts. Brother will not be held responsible for any accidents or problems resulting from the use of non-genuine parts.

If any safety devices have been removed, be absolutely sure to re-install them to their original positions and check that they operate correctly before using the machine.

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CAUTION

Modification

To prevent accidents and problems, do not modify the sewing machine (including the control devices) yourself. Brother will not be held responsible for any accidents or problems resulting from modifications made to the equipment.

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[3] Warning labels

The following warning labels appear on the sewing machine.

Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer.

1

2

* Safety devices:

(A) Finger guard (B) Thread take-up cover (C) Motor cover

(D) Pulse motor cover

8

3

4

5

6

7

9

10

11

12

Be careful not to get your hands caught when returning the machine head to its original position after it has been tilted.

Be careful to avoid injury from the moving thread take-up.

High temperature warning display

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.

Direction of operation

Do not hold. Problems with operation or injury may occur.

Do not place your hands inside the bottom cover. Problems with operation or injury may occur.

Be careful to avoid injury from the moving upper knife.

Be careful to avoid injury from the moving upper knife set lever.

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Oil tank

1768D

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1. MACHINE SPECIFICATIONS

Max. sewing speed

Backtack sewing speed

Presser foot height

Control box power supply voltage*2

Manual 150 (*1) - 4000 sti/min*1

*1 Standard feed locus *2 If using a power supply voltage which is outside the normal specifications, contact the place of purchase.

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2. INSTALLATION

CAUTION

Machine installation should only be carried out by a qualified technician.

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

The sewing machine weighs approximately 37 kg (82lb). The installation should be carried out by two or more people.

Do not connect the power cord until installation is complete. The machine may operate if the treadle is depressed by mistake, which could result in injury.

About the machine set-up location

・ Do not set up this sewing machine near other equipment such as

televisions, radios or cordless telephones, otherwise such equipment may be affected by electronic interference from the sewing machine.

・ The sewing machine should be plugged directly into an AC wall

outlet. Operation problems may result if extension cords are used.

2. INSTALLATION

Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or cause other injuries.

Use both hands to hold the machine head when tilting it back or returning it to its original position. If only one hand is used, the weight of the machine head may cause your hand to slip, and your hand may get caught.

0475D

Carrying the machine

・ The sewing machine should be carried by the arm and the motor

cover by two people as shown in the illustration.

* Do not hold by any part other than the motor cover. If this is not

observed, it may result in damage to the sewing machine.

Tilting back the machine head

・ Hold section (A) with your foot so that the table does not move,

and then push the arm with both hands to tilt back the machine head.

Returning the machine head to the upright position

1. Clear away any tools, etc. which may be near the table holes.

2. While holding the face plate with your left hand, gently return the machine head to the upright position with your right hand.

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1771D

1772D

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2. INSTALLATION

2-1. Table processing diagram

・ The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and withstand the

vibration of the sewing machine.

・ Drill holes as indicated in the illustration below.

Head rest hole

Cotton stand hole

Cord hole

Control box mounting hole

1412D

2-2. Installation

1. Control box + Oil pan

(1) Control box (2) Bolts [4 pcs] (3) Nuts [4 pcs] (4) Spring washers [4 pcs] (5) Washers [4 pcs]

2. Connecting rod

(6) Connecting rod (7) Nut

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2. INSTALLATION

3. Duster chute

１. Install the duster chute (2) to the

underside of the oil pan (1) as

Packing

1773D

shown in the illustration.

4. Rubber cushions

(1) Rubber cushions [2 pcs]

1414D

5. Machine head

(1) Hinges [2 pcs] (2) Machine head (3) Head rest

NOTE:

・ Bind the cords together and pass

them through the cord hole.

・ Tap the head rest (3) securely into

the table hole.

・ If the head rest (3) is not pushed in

as far as it will go, the machine head will not be sufficiently stable when it is tilted back.

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2. INSTALLATION

10mm

1774D

Within 13mm

1775D

6. Knee lifter plate

1. Turn the machine pulley so that the feed dog is below the top of the needle plate.

2. Lower the presser foot (1) by using the lifting lever (2).

3. Loosen the nut (3).

4. Turn the screw (5) to adjust so that the amount of play in the knee lifter plate (4) is approximately 10 mm.

5. After adjustment is completed, securely tighten the nut (3).

6. Loosen the nut (6).

7. Turn the adjusting screw (8) to adjust so that the presser foot (7) is at the desired position within a distance of 13 mm from the needle plate when the knee lifter plate is fully pressed.

8. After adjustment is completed, securely tighten the nut (6).

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S-7780A

2-3. Lubrication

Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the treadle is depressed by mistake, which could result in injury.

Be sure to wear protective goggles and gloves when handling the lubricating oil, so that it does not get into your eyes or onto your skin. If care is not taken, inflammation can result. Furthermore, do not drink the lubricating oil. Diarrhea or vomiting may result. Keep the oil out of the reach of children.

When cutting the nozzle of the oil tank, hold the base of the nozzle securely.

If you hold the end of the nozzle, injury from the scissors may result.

2. INSTALLATION

CAUTION

The sewing machine should always be lubricated and the oil supply replenished before it is used for the first time, and also after long periods of non-use.

1. Hold the base of the nozzle of the accessory oil tank (1), and use scissors to cut about half-way along the straight section (A) of the nozzle.

2. Loosen and remove the nozzle, and then remove the seal (2).

3. Tighten the nozzle.

4. Tilt back the machine head.

5. Remove the rubber cap (3), and pour lubricating oil into the oil cover (4) until it reaches the upper reference line (5).

6. Replace the rubber cap (3).

7. Return the machine head to its original position.

NOTE:

When the machine head is tilted back at times such as the following, lubricating oil may leak out from the oil cover (4).

1) If lubricating oil is added until the oil level goes above the upper reference line (5) on the oil cover (4).

If the oil level drops below the lower reference line (6) on the oil cover (4), be sure to replenish the oil.

Upper

reference line

Lower

reference line

1418D

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2. INSTALLATION

2-4. Connecting the cords

Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.

Do not connect the power cord until all cords have been connected. The machine may operate if the treadle is depressed by mistake, which could result in injury.

When securing the cords, do not bend the cords excessively or fasten them too hard with staples, otherwise there is the danger that fire or electric shocks could occur.

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.

2-4-1. Connecting the cords

Align the flat edges

CAUTION

1. Cor ds ( 1)

(1) Solenoid connector 14-pin (2) Sewing machine motor encoder

connector 10-pin

(3) Feed motor encoder connector

6-pin (4) Operation panel connector 5-pin (5) Power connector 3-pin

1. Secure the cords to the control box

with the black band (6).

NOTE:

For Europe specifications and 220 V specifications, refer to “2-4-2. Other cords”.

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Green and yellow wire (ground wire)

Gray (ground wire)

Ground symbol

1794D

2. INSTALLATION

2. Ground wire

(1) Ground wire

[Europe specifications：3pcs]

Screw

(2)

[Europe specifications：3pcs] (3) Power cord

1. Attach an appropriate plug to the

power cord (3). (The green and yellow wire is the ground wire.)

2. Insert the power plug into a

properly-grounded electrical outlet.

NOTE:

・ Make sure that the ground

connections are secure in order to ensure safety.

・ For Europe specifications and 220 V

specifications, refer to “2-4-2. Other cords”.

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2. INSTALLATION

Lower the tab (3).

Push in securely until the tabs (3) engage.

3. Co rds ( 2)

(1) Machine motor connector 4-pin (2) Feed motor connector 6-pin

1421D

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2-4-2. Other cords

2. INSTALLATION

DANGER

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the cover of the control box. Touching areas where high voltages are present can result in severe injury.

For Europe specifications and 220 V specifications, connect the cords according to the respective specifications.

<Europe specifications> (1) Filter box (2) Screws [4 pcs] (3) Connector (4) CE bush plate (5) Screws [2 pcs] (6) CE D cord cover (7) Screws [2 pcs] (8) Staples [4 pcs] (9) Power cord

1. Attach an appropriate plug to the

power cord (9). (The green and yellow wire is the ground wire.)

2. Insert the power plug into a

properly-grounded electrical outlet.

NOTE:

・ Take care when tapping in the

staples (8) to make sure that they do not pierce the cords.

・ Do not use extension cords,

otherwise machine operation problems may result.

Leg

Control box

Green and yellow wire (ground wire)

1795D

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2. INSTALLATION

2-5. Using the upper knife

1. To operate the upper knife (1), lower the upper knife set lever (2). simultaneously with the operation of the machine.

2. To stop the upper knife (1), push the release lever (3).

The upper knife (1) will rise and stop.

* Do not operate the upper knife set lever (2) and release

lever (3) while the sewing machineis operating.

When it is difficult for the sewing scraps to drop below the bed, install the supplied sewing scraps guide U (4) to the auxiliary needle plate (5) with the two screws (6).

If it is not necessary to deposit the cut sewing scraps below the bed, fit the supplied needle plate cover (7) over the auxiliary needle plate (5).

The upper knife (1) will now operate

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3.

USING THE OPERATION PANEL (BASIC OPERATIONS)

3. USING THE OPERATION PANEL (BASIC OPERATIONS)

3-1. Names and functions

・ The operation panel keys cannot be operated while sewing is in progress.

Select the keys and set the number of stitches before starting sewing.

・ In the case of keys with indicators, the indicator illuminates when that function is operating, and the indicator switches off

when the key is pressed once more.

Power indicator

Stitch No. indicator

Speed indicator

Counter indicator

Locus indicator

Program indicator

1425D

The power indicator illuminates when the power switch is turned on.

(1) 3-digit display

Displays the sewing pitch.

(2) Pitch setting keys

(3) 4-digit display

(4) SEL (Select) key

Use these keys to set the sewing pitch.

・

When the - key is pressed, the setting decreases in steps of 0.05 within a range of 0.05

to 4.00.

When the + key is pressed, the setting increases in steps of 0.05 within a range of 0.05

・

to 4.00.

・ When start backtack stitches are being displayed, the indicator of the start backtack key

(6) will illuminate, and the number of A stitches will appear in the A column and the number of B stitches will appear in the B column.

・ When end backtack stitches are being displayed, the indicator of the end backtack key

(7) will illuminate, and the number of C stitches will appear in the C column and the number of D stitches will appear in the D column.

・ When continuous backtack stitches are displayed, the indicator of the continuous

backtack key (8) will illuminate, and the number of A, B, C and D stitches will appear in order starting from the left column of the display.

・ The five indicators on the right side of the window show which value is appearing in the

4-digit display. The 4-digit display shows the number of stitches, speed, counter, locus and program. When the number of stitches is being displayed, the ABCD indicator (Stitch No. indicator) will illuminate.

The value in the 4-digit display (3) can be changed each time this key is pressed.

(5) Setting keys

These keys are used to set the number of backtack stitches for A, B, C and D.

・ When the key is pressed, the setting increases from 0 up to 9. ・ If you press the key once more when “9” is displayed, the value will return to “0”. ・ If you hold down the key, the value will change continuously.

1426D

1427D

1428D

1340D

1429D

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3. USING THE OPERATION PANEL (BASIC OPERATIONS)

(6) Start backtack key

(7) End backtack key

(8) Continuous backtack key

(9) Thread trimming disable/F1 key

(10) Slow start/F2 key

(11) Half stitch key

When this key is pressed so that the indicator illuminates, the number of start backtack stitches (0 - 9) in the A and B columns of the display are sewn.

When this key is pressed so that the indicator illuminates, the number of end backtack stitches (0 to 9) in the C and D columns of the display are sewn. When the treadle is depressed backward, the end backtack stitches are sewn and then the thread is trimmed. If the treadle has not yet been depressed backward, the end backtack function can be set to ON, the number of stitches can be changed and the function can be set back to OFF.

When this key is pressed so that the indicator illuminates, the number of backtack stitches (0 to 9) in the A, B, C and D columns of the display are sewn continuously. After the sewing machine sews a full cycle of stitches set by A, B, C and D, the thread is trimmed.

When this key is pressed so that the indicator illuminates, the sewing machine stops in the needle up position without thread trimming being carried out even if the treadle is depressed backward.

When this key is pressed so that the indicator illuminates, sewing is carried out at 700 sti/min for the first two stitches at the next sewing start after thread trimming. After this, the sewing speed corresponds to the treadle depression amount.

When the sewing machine is stopped, the needle bar can be moved up and down by pressing this key.

Power indicator

Stitch No. indicator

Speed indicator

Counter indicator

Locus indicator

Program indicator

1425D

1323D

1325D

1327D

1330D

1332D

1329D

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3. USING THE OPERATION PANEL (BASIC OPERATIONS)

3-2. Sewing start and end backtack stitches

Setting start backtack stitches

1

Setting end backtack stitches

2

0841M

Press the key so that the indicator and the key

illuminate.

Press the key to set the number of stitches for A and B.

For example, to select 3 stitches and 4 stitches: A-3, B-4

Press the key so that the indicator and the key

illuminate.

1350D

3

4

Press the key to set the number of stitches for C and D.

For example, to select 3 stitches and 2 stitches: C-3, D-2

Start backtacking is carried out. After it has finished, normal sewing continues for as long as the treadle remains depressed.

NOTE:

If the treadle is returned to the neutral position, the sewing machine will continue operating until the set number of start backtack stitches has been sewn.

End backtacking is carried out. After it has finished, the thread is trimmed automatically and the sewing machine stops in the needle up position.

NOTE:

・ If the treadle is depressed backward before sewing of the set number of start backtack

stitches is complete, end backtacking will not be carried out.

・ If thread trimming lock is set, the sewing machine will stop in the needle up position without

thread trimming being carried out.

1351D

2159M

2160M

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3. USING THE OPERATION PANEL (BASIC OPERATIONS)

3-3. Sewing continuous backtack stitches

Sewing continuous backtack stitches

1

2

3

3655M

Press the key so that the indicator and the key

illuminate.

Press the key to set the number of stitches for A, B, C and D.

For example, to select 4 stitches for A and 5 stitches for B: A-4, B-5 To select 5 stitches for C and 4 stitches for D: C-5, D-4

If the treadle is simply depressed continuously, the number of stitches set for A, B, C and D will be sewn in a single cycle, the thread will be trimmed automatically and then the needle bar will stop in the needle up position.

NOTE:

・ If the treadle is returned to the neutral position while continuous backtacking is being carried

out, the sewing machine will stop at the point where the treadle returns to the neutral position. If the treadle is depressed again, operation will resume from the point where it was interrupted.

・ If thread trimming lock is set, the sewing machine will stop in the needle up position without

thread trimming being carried out.

If "-" is set as the number of stitches for C, the number of stitches set by AB can be sewn D times. For example, if D=3: ABA If D=6: ABABAB

1352D

2159M

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4.

USING THE OPERATION PANEL (ADVANCED OPERATIONS)

The operations described in this section should only be carried out by a technician.

4. USING THE OPERATION PANEL (ADVANCED OPERATIONS)

4-1. Sewing pitch setting method

1

2

Any indicator illuminates

Press the key so that any one of the / /

/ / indicator illuminates.

・ The sewing pitch can be set regardless of whether the stitch no.,

speed, counter, locus or program is being displayed in the 4-digit display. (Refer to the Service Manual for details on programs.)

Press the - /+ keys to change the setting value.

・ When the + key is pressed, the setting value increases by

0.05.

・ When the - key is pressed, the setting value decreases by

0.05.

1353D

NOTE:

3

(*1) When the function for memory switch No. 407 (=MSW407) (Linked/not linked to pitch) is enabled and MSW407 is "ON",

the backtack sewing pitches are synchronized with the main sewing pitch so that the pitch settings are the same. When set to "OFF", the main sewing pitch and the backtack sewing pitches can be set separately.

The setting range is from 0.05 to 4.00.

The 3-digit display will switch from the normal sewing pitch to the backtack sewing pitch and the backtack sewing pitch can be set only when the / indicators are illuminated simultaneously. (*1)

(Refer to "4-3-2. Backtack sewing speed setting method".)

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4. USING THE OPERATION PANEL (ADVANCED OPERATIONS)

4-2. Switching the 4-digit display

・ The 4-digit display can be changed to one of the following five statuses*1 each time the key is pressed.

Stitch no. display or no display -> Speed display -> Counter display -> Locus display -> (Program display) *1: The display switches to program display only when memory switch No. 470 is set to “1”. (Refer to the Service Manual for details on changing memory switch No. 470.)

・ When the speed display or counter display appears, you can press the key to switch to another display.

Display mode

Stitch number display

Sewing speed display

Counter display

Flashing Flashing

Locus display Program

display

ON

ON ON

ON

Flashing

ON ON Production counter value

ON ON

4-3. Setting the sewing speed

4-3-1. Setting the maximum sewing speed

1

2

Press the key so that the indicator illuminates.

・ The maximum sewing speed setting value will appear in the 4-digit

Press the C /D keys to change the setting value.

display.

4-digit display

Maximum sewing speed setting

Backtack sewing speed setting

Lower thread counter warning

Needle replacement counter

ON

ON Program number or setting

ABCD stitch number display

value

value Lower thread counter value

enabled

value

warning enabled Locus setting value

parameters

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・ When the D key is pressed, the setting increases by 100.

・ When the C key is pressed, the setting decreases by 100.

NOTE:

The setting range is from 220 to 4000 sti/min.

1356D

S-7780A

Brother S-7780A Instruction manual

SAFETY INSTRUCTIONS

[1] Safety indications and their meanings

[2] Notes on safety

[3] Warning labels

CONTENTS

1. MACHINE SPECIFICATIONS

2. INSTALLATION

2-1. Table processing diagram

2-2. Installation

2-3. Lubrication

2-4. Connecting the cords

2-4-1. Connecting the cords

2-4-2. Other cords

2-5. Using the upper knife

3. USING THE OPERATION PANEL (BASIC OPERATIONS)

3-1. Names and functions

3-2. Sewing start and end backtack stitches

3-3. Sewing continuous backtack stitches

4. USING THE OPERATION PANEL (ADVANCED OPERATIONS)

4-1. Sewing pitch setting method

4-2. Switching the 4-digit display

4-3. Setting the sewing speed

4-3-1. Setting the maximum sewing speed