Brother S-7200C Instruction Manual

0 (0)

S-7200C	INSTRUCTION MANUAL

Please read this manual before using the machine.

Please keep this manual within easy reach for quick reference.

SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH 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-7200C

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

CAUTION	The instructions which follow this term indicate situations where failure to follow the
CAUTION	instructions could cause injury when using the machine or physical damage to
	equipment and surroundings.
Symbols

· · · · ·

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”.)

S-7200C

[2] Notes on safety

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.

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.

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.

Installation

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 more than 45 kg. 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.

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.

S-7200C

CAUTION

Sewing

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.

yWhen threading the needle

yWhen replacing the bobbin and needle

yWhen 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.

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.

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.

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.

Use only the proper replacement parts as specified by Brother.

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.

yWhen carrying out inspection, adjustment and maintenance

yWhen replacing consumable parts such as the rotary hook

If the power switch needs to be left on when carrying out some adjustment, be extremely careful to observe all safety precautions.

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.

Use only the proper replacement parts as specified by Brother.

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.

Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty.

S-7200C

iii

[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.

Touching areas where high voltages are present can	4	Be careful not to get your hands
result in severe injury. Turn off the power before	4	caught when returning the
opening the cover.		machine head to its original
		position after it has been tilted.
		position after it has been tilted.

*Safety devices: (A) Finger guard

(B)Thread take-up cover

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

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

Oil pan

Control box	Transformer box
	(100 V/400 V system only)	4123M
		4123M

S-7200C

1. MACHINE SPECIFICATIONS................	1
2. NAMES OF MAJOR PARTS ..................	2
3. INSTALLATION..........................................	3
3-1. Table processing diagram ..............................	4
3-2. Installation ......................................................	4
3-3. Lubrication (-[]0[], []3[] specifications).............	8
3-4. Connecting the cords......................................	9
3-4-1. Opening the control box cover ............	9
3-4-2. Connecting the cords ..........................	9
3-5. Test operation (Operating the treadle) ...........	14
4. PREPARATION BEFORE SEWING ....	15
4-1. Installing the needle........................................	15
4-2. Removing the bobbin case.............................	15
4-3. Winding the lower thread................................	16
4-4. Installing the bobbin case...............................	16
4-5. Threading the upper thread............................	17
4-6. Adjusting the stitch length...............................	18
4-7. Using the thread wiper (-4[][] specifications) ...	18
4-8. Using the knee lifter........................................	18
5. USING THE G50 OPERATION PANEL
(BASIC OPERATIONS)............................	19
5-1. Names and functions......................................	19
5-2. Sewing start and end backtack stitches .........	21
5-3. Sewing continuous backtack stitches.............	22
5-4. Sewing fixed stitches ......................................	23
5-5. Sewing name labels .......................................	24
5-6. Sewing pleat presser stitches.........................	25
5-7. Using the lower thread counter ......................	26
6. USING THE G50 OPERATION PANEL
(ADVANCED OPERATIONS) ................	27
6-1. Names and functions......................................	27
6-2. Adjusting the needle up stop position.............	28
6-3. LOCK key .......................................................	29
6-4. Resetting all settings to their defaults.............	30
7. USING THE G10 OPERATION PANEL
(BASIC OPERATIONS)............................	31
7-1. Names and functions......................................	31
7-2. Sewing start and end backtack stitches .........	32
7-3. Sewing continuous backtack stitches.............	33
8. USING THE G10 OPERATION PANEL
(ADVANCED OPERATIONS) ................	34
8-1. Changing the needle stop position .................	34
8-2. Slow start........................................................	35
8-3. Correction sewing...........................................	36
8-4. Thread trimming lock ......................................	37

8-5.	Setting the maximum sewing speed ...............	38
8-6.	Adjusting the needle up stop position .............	39
8-7.	Lock function...................................................	40
8-8.	Resetting all settings to their defaults .............	40

9. SEWING.........................................................		41
9-1. Sewing ...............................................................		41
9-2.	Backtacking.....................................................	41
9-3.	Sewing condensed stitches ............................	42

10. THREAD TENSION....................................		43
10-1.	Adjusting the thread tension ........................	43
10-2.	Adjusting the presser foot pressure .............	44
10-3.	Adjusting the trailing length after thread
	trimming .......................................................	44
10-4.	Adjusting the thread take-up amount
	(-[][]3 specifications).....................................	45

11. CLEANING....................................................		46
11-1.	Daily cleaning procedures............................	46
11-2.	Applying grease (-[]3[], []5[] specifications*)
	[When "GrEASEUP" appears…When using
	the G50 operation panel] .............................	49
11-3.	Applying grease (-[]3[], []5[] specifications*)
	[When "GrUP" appears ... When using
	the G10 operation panel] .............................	51
12. ADJUSTING THE ROTARY HOOK
LUBRICATION AMOUNT
(-[]0[], []3[] specifications).....................		53
13. STANDARD ADJUSTMENTS ................		54
13-1.	Adjusting the actuator switch position..........	54
13-2.	Adjusting the safety switch position .............	55
13-3.	Adjusting the thread take-up spring .............	56
13-4.	Adjusting arm thread guide R ......................	57
13-5.	Adjusting the presser foot height .................	57
13-6.	Adjusting of the feed dog height ..................	58
13-7.	Adjusting the feed dog angle .......................	59
13-8.	Adjusting the needle bar height ...................	60
13-9. Adjusting the needle and feed
	mechanism timing ........................................	60
13-10. Adjusting the needle and rotary hook
	timing...........................................................	61
13-11. Adjusting the treadle ...................................		62
13-12. Adjusting the presser foot floating amount
	(minute lifting amount) ................................	62
14. TROUBLESHOOTING ..............................		63
14-1. Sewing ..........................................................		63
14-2. Error code displays .......................................		68
15. 7-SEGMENT DISPLAY.............................		72

S-7200C

1. MACHINE SPECIFICATIONS

Quick reverse

Thread wiper

Lubrication type

Minimum lubrication

Semi dry

Complete dry

Use

For light-weight

For medium-

For heavy-weight

and difficult-to-sew

weight materials

materials

-33S, -43S

-453

-303, -403

-305

-45S

-333, -433

-405

Max. sewing speed

4,000

rpm

5,000 rpm*

4,500 rpm*

Start backtacking and

continuous

220 - 3,000 rpm

backtacking speed

End backtacking speed

1,800 rpm

Max. stitch length

4.2 mm

5 mm

Presser foot

Lifting lever

6 mm

height

Knee lifter

16 mm

Feed dog height

0.8 mm

1.2 mm

Needle (DB×1, DP×5)

NS #9 - #11

#11 - #18

#19 - #22

Motor

AC servo motor (4-pole, 450W)

Control circuit

Microprocessor

*…When sewing at speeds of 4,000 rpm or higher, set the stitch length to 4.2 mm or less.

Rotary hook

-33S			-303, -403		-305	-45S
-43S			-333, -433		-405	-453
Lubricated /			Lubricated /		Lubricated /	Rotary hook RP
for light materials			for medium materials		for heavy materials	(lubrication-free rotary hook)
Lubricating oil
		-30[], -40[]		-33[], -43[]		-45[]
Rotary hook	High-speed spindle			High-speed spindle		-
Needle bar	High-speed spindle			Special Brother grease		Special Brother grease
Needle bar				Special Brother grease		Special Brother grease

S-7200C

2. NAMES OF MAJOR PARTS

G50 operation panel (advanced function LCD)

G10 operation panel (basic function LED)

4124M

(1)	Bobbin winder	(2)	Thread wiper (-4[][] specifications)
(3)	Lifting lever	(4)	Actuator switch
(5)	Presser foot	(6)	Knee lifter assembly
(7)	Power switch	(8)	Oil gauge window (-[]0[], []3[] specifications)
(9)	Reverse lever	(10)	Stitch length dial
(11)	Oil feeding pocket (-[]0[] []3[]specifications)	(12)	Machine pulley
(13)	Operation panel	(14)	Cotton stand

(15)Control box

Safety devices
(16) Thread take-up cover	(17) Finger guard

S-7200C

3. 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 more than 45 kg. 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.

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.

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.

Carrying the machine

2086M

4125M

The machine should be carried by the arm by two people as shown in the illustration.

*Hold the motor cover (A) by hand also so that the pulley does not rotate.

Tilting back the machine head

Hold section (B) with your foot so that the table does not move, and then push the arm with both hands to tilt back the machine head.

2088M

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.

2089M

S-7200C

3. INSTALLATION

3-1. Table processing diagram

The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the vibration of the sewing machine.

Drill holes as indicated in the illustration below.

Cotton stand hole

Cord hole

Head rest hole

Control box mounting hole

4126M

3-2. Installation

1. Control box

(1) Control box

(2) Bolts [3 pcs]

(3) Nuts [3 pcs]

(4) Spring washers [3 pcs]

(5) Washers [3 pcs]

2. Connecting rod

(6) Connecting rod

(7) Nut

4127M

S-7200C

3. INSTALLATION

3. Oil pan

(1)Head cushions (left) [2 pcs]

(2)Head cushions (right) [2 pcs]

(3)Oil pan

4128M

4. Rubber cushions

(1)Rubber cushions [2 pcs]

(2)Nails [4 pcs]

5. Knee lifter complying bar

(3) Knee lifter complying bar

2094M

6. Machine head

(1)Hinges [2 pcs]

(2)Machine head

(3)Head rest

NOTE:

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.

4129M

S-7200C

3. INSTALLATION

7. Operation panel

(1)Operation panel

(2)Screws [2 pcs]

(Use for tightening rear cover)

4306M

8. Sticker (Remove)

(1) Sticker

4131M

9. Cotton stand

(1) Cotton stand

NOTE:

Securely tighten the nut (4) so that the two rubber cushions (2) and the washer (3) are securely clamped and so that the cotton stand (1) does not move.

3636M

S-7200C

3. INSTALLATION

10. Knee lifter plate

(1)Knee lifter plate

(2)Bolt

*Loosen the bolt (3) and the bolt (4), and then adjust the position of the knee lifter plate (1) so that it is easy to use.

4132M

4133M

4134M

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

2.Lower the presser foot (6) by using the lifting lever (5).

3.Loosen the nut (7).

4.Turn the screw (9) to adjust so that the amount of play in the knee lifter (8) is approximately 2 mm when the knee lifter plate (1) is gently pressed.

5.Securely tighten the nut (7).

6.Loosen the nut (10).

7.Turn the screw (11) until the distance between the end of the screw (11) and the knee lifter (12) is approximately 3 mm.

8.Turn the adjusting screw (11) to adjust so that the presser foot (6) is at the desired position within a distance of 16 mm of the needle plate when the knee liter plate (1) is fully pressed.

9.After adjustment is completed, securely tighten the nut (10).

Within 16 mm

4135M

S-7200C

3. INSTALLATION

3-3. Lubrication (-[]0[], []3[] specifications)

* If the sewing machine is -[]5[] specifications, it is a complete dry type machine, and so no lubrication is necessary.

CAUTION

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 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.

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.

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.

Use only the lubricating oil <Nippon Oil Corporation Sewing Lube 10N; VG10> specified by Brother.

* If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex SM10; VG10>.

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. Open the oil feeding pocket cover (3).

5. Insert the nozzle of the oil tank (1) deeply into the oil feeding pocket (4), and then add about 120 ml of lubricating oil.

6. Check that the oil gauge (6) comes to the upper reference line in the oil gauge window (5).

7. Close the oil feeding pocket cover (3).

Be sure to add more oil if the oil gauge (6) is below the lower reference line.

Upper reference line

Lower reference line

4136M

S-7200C

3. INSTALLATION

3-4. Connecting the cords

DANGER

CAUTION

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.

3-4-1. Opening the control box cover

(1) Screw

(2) Cover

4137M

3-4-2. Connecting the cords

1. Sewing machine cords

4138M

S-7200C

3. INSTALLATION

Lower the tab (6).

Raise the tab (6).

Push in securely until the tabs (6) engage.

Press the tab.

4139M

4140M

(1)6-pin head detector unit connector

(2)12-pin operation panel connector

(3)10-pin resolver connector

(4)14-pin machine connector

(5)4-pin motor connector

2. Binding the cords

(1) Repeat cable tie

NOTE:

Bind the cords in such a way that the connector does not get pulled out. All cords that come out from the control box should be secured to the cord holder (2) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords to become disconnected, which can cause problems with the operation of the control box.

Cords

4141M

S-7200C

3. INSTALLATION

Oil pan

Ground symbol

4142M

4143M

Leg

Control box

Green and yellow wire (ground wire)

4144M

3. Ground wire

(1)Ground wire

(2)Washer

(3)Spring washer

(4)Screw

4. Other cords

Connect cords that match the voltage specifications.

< Europe specifications >

(1)Filter box

(2)Screws [4 pcs.]

(3)Staples [7 pcs.]

(4)Power cord

1.Attach an appropriate plug to the power cord (4). (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 (3) to make sure that they do not pierce the cords.

Do not use extension cords, otherwise machine operation problems may result.

S-7200C

3. INSTALLATION

<200 V system >

(1) Power switch

(2) Screws [2 pcs]

Operator

4145M

4146M (3) 3-pin power supply connector

(4) Power cord

(5) Staples [5 pcs.]

1. Attach an appropriate plug to the power cord (4). (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 (5) to make sure that they do not pierce the cords.

Do not use extension cords, otherwise machine operation problems may result.

Green and yellow wire (ground wire)

4147M

S-7200C

3. INSTALLATION

<100 V/400 V system >

(1) Power switch

(2) Screws [2 pcs]

Operator

4145M

4148M

Green and yellow wire (ground wire)

4150M

(3)Transformer box

(4)Transformer box plates [2 pcs.]

(5)Screw [with washer]

(6)3-pin power supply connector

(7)Staples [6 pcs.]

(8)Cord clamps [2 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 (7) to make sure that they do not pierce the cords.

Do not use extension cords, otherwise machine operation problems may result.

S-7200C

3. INSTALLATION

3-5. Test operation (Operating the treadle)

CAUTION

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.

2114M 1. Turning on the power

Press the ON power switch (1).

The power indicator (2) will illuminate.

	4307M
	4307M
		2. Test operation

3648M

1. Check that the machine sews at low speed when the treadle (1) is gently pressed to position (B).

2. Then check that it sews at high speed when the treadle

(1) is gently pressed to position (C).

3. After pressing the treadle (1) forward, check that the needle is lowered to the top of the needle plate when the treadle (1) is returned to the neutral position (A). (when needle down stopping has been set.)

4. If the treadle (1) is pressed to position (D), thread trimming is carried out and the needle then rises above the needle plate and stops.

2117M

S-7200C

4. PREPARATION BEFORE SEWING

4-1. Installing the needle

CAUTION

Turn off the power switch before installing the needle.

The machine may operate if the treadle is depressed by mistake, which could result in injury.

1. Turn the machine pulley to move the needle bar to its highest position.

2. Loosen the screw (1).

3. Insert the needle (2) in a straight line as far as it will go, making sure that the long groove on the needle is at the

left, and then securely tighten the screw (1).

Front

Long groove

4152M

0795M

4-2. Removing the bobbin case

CAUTION

Turn off the power switch before removing the bobbin case.

The machine may operate if the treadle is depressed by mistake, which could result in injury.

2119M	1.	Turn the machine pulley to raise the needle until it is
2119M	1.	Turn the machine pulley to raise the needle until it is
		above the needle plate.
2.		Pull the latch (1) of the bobbin case upward and then
		remove the bobbin case.
3.		The bobbin (2) will come out when the latch (1) is
		released.
*		There is an anti-spin spring (3) inside the bobbin case.
		The anti-spin spring (3) prevents the bobbin from racing at
		times such as during thread trimming.
	* Use bobbins (2) made of light alloy as specified by
		BROTHER.

2120M

For thick materials



0798M		2121M

S-7200C

4. PREPARATION BEFORE SEWING

4-3. Winding the lower thread

CAUTION

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

4308M	1.	Turn on the power switch.
4308M	2.	Place the bobbin (1) onto the bobbin winder shaft (2).


	3.	Wind the thread several times around the bobbin (1) in the
		direction indicated by the arrow.
	4.	Push the bobbin presser arm (3) toward the bobbin(1).
	5.	Raise the presser foot with the lifting lever.
	6.	Depress the treadle. Lower thread winding will then start.
	7.	Once winding of the lower thread is completed, the bobbin
		presser arm (3) will return automatically.
	8.	After the thread has been wound on, remove the bobbin
		and cut the thread with the knife (4).

			* Loosen the screw (5) and move the bobbin presser (6) to
More thread			adjust the amount of thread wound onto the bobbin.
			NOTE:
			The amount of thread wound onto the bobbin should
Less thread			be a maximum of 80 % of the bobbin capacity.

4154M

2124M

4-4. Installing the bobbin case

CAUTION

Turn off the power switch before installing the bobbin case.

The machine may operate if the treadle is depressed by mistake, which could result in injury.

0802M	2125M	1.	Turn the machine pulley to raise the needle until it is
			above the needle plate.
			above the needle plate.
		2.	While holding the bobbin so that the thread winds to the
			right, insert the bobbin into the bobbin case.
		3.	Pass the thread through the slot (1) and under the tension
			spring (2), and then pull it out from the thread guide (3).
			spring (2), and then pull it out from the thread guide (3).
		4.	Check that the bobbin turns clockwise when the thread is
			pulled.
		5.	Hold the latch (4) on the bobbin case and insert the
			bobbin case into the rotary hook.

2126M

S-7200C

4. PREPARATION BEFORE SEWING

4-5. Threading the upper thread

CAUTION

Turn off the power switch before threading the upper thread.

The machine may operate if the treadle is depressed by mistake, which could result in injury.

Turn the machine pulley and raise the thread take-up (1) before threading the upper thread. This will make threading easier and it will prevent the thread from coming out at the sewing start.

4155M

S-7200C

+ 56 hidden pages

Brother S-7200C Instruction Manual

SAFETY INSTRUCTIONS

CONTENTS

1. MACHINE SPECIFICATIONS

2. NAMES OF MAJOR PARTS

3. INSTALLATION

3-1. Table processing diagram

3-2. Installation

3-3. Lubrication (-[]0[], []3[] specifications)

3-4. Connecting the cords

3-4-1. Opening the control box cover

3-4-2. Connecting the cords

3-5. Test operation (Operating the treadle)

4. PREPARATION BEFORE SEWING

4-1. Installing the needle

4-2. Removing the bobbin case

4-3. Winding the lower thread

4-4. Installing the bobbin case

4-5. Threading the upper thread