Brother HE-800A User Manual
HE-800A
ELECTRONIC LOCKSTITCH BUTTON HOLER
Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety
instructions below 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 lever, 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.
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
Symbols
DANGER
CAUTION
This symbol ( ) indicates something that you should be careful of. The picture inside the triangle
윤윤윤윤윤윤
indicates the nature of the caution that must be taken.
(For example, the symbol at left means “beware of injury”.)
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 cause injury when using the machine or physical damage to equipment
and surroundings.
윤윤윤윤윤윤
윤윤윤윤윤윤
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”.)
HE-800A
i
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 face plate of the control box. Touching areas where high voltages are present can result in
severe injury.
DANGER
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 r10% 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.
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 approximately 56 kg.
The installation should be carried out by two or more
people.
Do not connect the power cord until installation is
complete, otherwise the machine may operate if the
treadle is depressed by mistake, which could result in
injury.
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 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.
The ambient temperature should be within the range
of 5qC to 35qC 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.
All cords should be secured at least 25 mm away
from any moving parts. Furthermore, do not
excessively bend the cords or secure them too firmly
with staples, otherwise there is the danger that fire or
electric shocks could occur.
Install the belt covers to the machine head and motor.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
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 diarrhoea.
Keep the oil out of the reach of children.
ii
HE-800A
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,
otherwise the machine may operate if the treadle is
depressed by mistake, which could result in injury.
x When threading the needle
x When replacing the needle and bobbin
x When not using the machine and when leaving the
machine unattended
Cleaning
Turn off the power switch before carrying out
cleaning, otherwise the machine may operate if the
treadle is depressed by mistake, which could result in
injury.
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.
Do not touch the motor cover during operation and for
one hour after operation has finished, otherwise
burns may result.
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.
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 diarrhoea.
Keep the oil out of the reach of children.
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.
x When carrying out inspection, adjustment and main-
tenance
x When replacing consumable parts such as the ro-
tary hook
Turn off the power switch before inserting or
removing the plug, otherwise damage to the control
box could result.
If the power switch needs to be left on when carrying
out some adjustment, be extremely careful to observe
all safety precautions.
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.
HE-800A
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.
1
2a
2b
NOTE:
Either the 2a or the 2b label is displayed on the sewing
machine.
*Safety devices
Eye guard, Finger guard, Thread take-up cover, Belt cover,
Belt cover plate, etc.
3
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.
6
High temperature warning display
iv
4
5
Do not touch any of the cutter or press
any objects against the machine while
sewing, as this may result in personal
injury or damage to the machine.
Do not touch any of the fan or press
any objects against the machine, as
this may result in personal injury or
damage to the machine.
HE-800A
7
Direction of operation
Thread take-up cover
Belt cover
Eye guard
Belt cover plate
Finger guard
4404M
HE-800A
v
CONTENTS
1. NAME OF EACH PART........................ 1
2. SPECIFICATIONS ................................
2-1. Specifications ................................................. 2
2-2. Standard sewing pattern list ........................... 3
2
3. OPTIONAL PARTS............................... 4
3-1. Special needle plate ....................................... 4
3-2. Leg parts......................................................... 4
3-3. Standing operation pedal................................ 5
3-4. Ruler ............................................................... 5
3-5. Tape guard ..................................................... 6
4.INSTALLATION...................................... 7
4-1. Table processing diagram .............................. 7
4-2. Installing the motor ......................................... 8
4-3. Installing the flange nut................................... 9
4-4. Installing the control box................................. 9
4-5. Installing the power switch..............................10
4-6. Installing the bed base.................................... 10
4-7. Installing the machine head............................ 11
4-8. Installing the head rest ................................... 11
4-9. Installing the operation panel ......................... 12
4-10. Routing the connector cord and
installing the oil stopper plate ....................... 12
4-11. Connecting the cords.................................... 13
4-11-1. Connecting the ground wire..............13
4-11-2. Connecting the machine
head harness .................................... 13
4-11-3. Connecting the motor harness.......... 14
4-11-4. Connecting the power cord...............15
4-11-5. Connecting the standing operation
pedal harness (option) ...................... 16
4-11-6. Installing the transformer .................. 17
4-12. Installing the V-belt....................................... 19
4-13. Installing the belt cover plate........................ 20
4-14. Installing the treadle connecting rod............. 21
4-14-1. Changing the treadle unit
installation position
(horizontal positioning only) .............. 22
4-15. Installing the spool stand.............................. 23
4-16. Installing the eye guard ................................23
4-17. Lubrication .................................................... 24
4-17-1. Lubricating the bed base................... 24
4-17-2. Lubricating the arm ...........................25
4-17-3. Lubricating the rotary hook ............... 25
4-18. Installing the belt cover................................. 26
4-19. Installing the auxiliary table .......................... 26
5. OPERATION......................................... 27
5-1. Name and function of each operation panel item..27
5-2. Home position detection (preparation)............29
5-3. Operating the treadle ......................................30
5-3-1. Operating the standing operation
pedal (option) ......................................31
5-4. Program setting method..................................32
5-4-1. Program setting examples...................33
5-4-2. Checking the length of knife ................35
5-5. Parameter table ..............................................36
5-5-1. Available sewing area..........................45
5-5-2. Setting the knife length ........................46
5-5-3. Buttonhole sewing size........................46
5-5-4. Main restrictions when setting
parameters ..........................................46
5-6. Rear tack vector shape programs...................48
5-7. Underlay programs .........................................49
5-8. Cutter operation ..............................................50
5-9. Cycle program.................................................51
5-10. Production counter........................................52
5-11. Bobbin thread counter...................................53
5-12. Using the program memos............................53
5-13. Adding patterns created using the
programming software for electronic
pattern sewer.................................................54
6. CHECKING THE SEWING PATTERN .55
6-1. Test feed mode...............................................55
6-2. Manual mode ..................................................56
7. CORRECT USE ....................................57
7-1. Installing the needle........................................57
7-2. Threading the upper thread ............................58
7-3. Winding the lower thread ................................59
7-4. Threading the bobbin case .............................60
7-5. Thread tension ................................................61
7-5-1. Lower thread tension...........................61
7-5-2. Upper thread tension...........................62
7-5-3. Thread take-up spring height ..............63
7-5-4. Thread take-up spring tension.............63
7-5-5. Adjusting arm thread guide .................63
8. SEWING ...............................................64
8-1. Sewing ............................................................64
8-2. If the stop switch is pressed during sewing ....65
8-3. If the thread breaks during sewing..................66
8-4. Thread breakage before sewing is finished....67
8-5. When resuming sewing in test feed mode
or manual mode ..............................................68
HE-800A
9.CLEANING AND MAINTENANCE .........69
9-1. Cleaning ......................................................... 69
9-2. Draining the oil................................................ 70
9-3. Cleaning the control box air inlet port............. 70
9-4. Cleaning the eye guard .................................. 70
9-5. Checking the needle....................................... 71
9-6. Cleaning the length feed plate........................ 71
10. STANDARD ADJUSTMENTS ............72
10-1. Adjusting the needle bar height....................72
10-2. Adjusting the needle and hook timing ..........73
10-3. Adjusting the clearance between needle
and hook point .............................................. 73
10-4. Adjusting the inner rotary hook and
rotary hook holder overlap ............................ 74
10-5. Adjusting the work clamp pressure ..............74
10-6. Adjusting the cutter installation..................... 74
10-7. Adjusting the upper thread trimming ............75
10-7-1. Adjusting the installation height of
the upper thread scissors.................. 75
10-7-2. Adjusting the upper thread scissors
opening timing................................... 76
10-8. Adjusting the lower thread clamp timing....... 77
10-9. Adjusting the bobbin presser........................ 77
10-10. Adjusting the needle up stop position......... 77
11. CHANGING FUNCTIONS USING
THE MEMORY SWITCHES ................78
11-1. Memory switch table.....................................79
12. PROGRAM INITIALIZATION..............80
12-1. Initializing all programs................................. 80
12-2. Initializing a single program.......................... 80
13. CHANGING FUNCTIONS USING
THE DIP SWITCHES ..........................
13-1. Panel DIP switches....................................... 81
13-2. Circuit board DIP switches ........................... 83
14. ERROR CODE TABLE .......................85
15. GAUGE PARTS LIST .........................
16. TROUBLESHOOTING........................
16-1. Upper thread breakage................................. 92
16-2. Skipped stitches ...........................................93
16-3. Uneven seams (1) ……
At the sewing start..................................... 94
81
89
92
16-4. Uneven seams (2) ……
Lower thread is lifted up at
the sewing start .........................................95
16-5. Uneven seams (3) ……
Seam lifts up at the sewing start................96
16-6. Uneven seams (4) ……
Uneven sewing pitch at the sewing start
16-7. Uneven seams (5) ……
Poor rounding of seam .................................96
16-8. Uneven seams (6) ……
Around rear tack or front tack ....................96
16-9. Uneven seams (7) ……
Loose thread end at end backtack ............97
16-10. Uneven seams (8) ……
Thread sticking out at end backtack........97
16-11. Uneven seams (9) ……
Sticking in needle plate............................97
16-12. Uneven seams (10) ……
All stitches................................................98
16-13. Upper thread run out...................................99
16-14. Unraveling of thread trimmed by upper
thread trimmer assembly...........................101
16-15. Upper thread mis-trimming .......................102
16-16. Needle strikes upper thread trimmer ........102
16-17. Needle breakage.......................................103
16-18. Imperfect cutter function
(imperfect material cutting)........................104
16-19. Cutter does not return...............................105
16-20. Cutter and upper thread scissors touch....105
16-21. Seam is cut ...............................................105
16-22. Upper thread mis-winding.........................106
16-23. Work clamp is not raised (1) Pulse motor
stepping sound cannot be heard...............106
16-24. Work clamp is not raised (2) Pulse motor
stepping sound can be heard....................107
16-25. Lower thread is not trimmed
(pulls when material is removed)...............108
16-26. Feed mechanism does not operate or
motor is out of step....................................108
16-27. Needle does not zigzag or noise occurs
when needle zigzags.................................109
16-28. Sewing machine stops during sewing.......109
16-29. Upper shaft does not rotate as far as
the needle up stop position .......................109
....96
HE-800A
1. NAME OF EACH PART
㧝
. NAME OF EACH PART
(1) Power switch (2) Control box (3) Operation panel
(4) Treadle (5) AC servo motor (6) Stop switch
(7) Spool stand (8) Pulley (9) Tension release lever
Safety devices
(10) Eye guard (11) Thread take-up cover (12) Belt cover
(13) Belt cover plate (14) Finger guard (15) Finger protector
(16) Belt retainer
4110M
1
HE-800A
㧞
㧞-㧝
. SPECIFICATIONS
2. SPECIFICATIONS
. Specifications
Buttonholes for clothing such as dress
shirts, blouses, work clothes and women's
clothes
-2
Buttonholes for knitted garments such as
knitted underwear, sweaters, cardigans
and jerseys
-3
Max. sewing speed
Zigzag mechanism
Feed mechanism
Work clamp lifter mechanism
Height of work clamp
Knife mechanism
Lower thread holding device
Bobbin presser
Standard sewing pattern
Memory pattern
Max. number of stitch
Needle
Data storage method
Power supply
Main use Buttonhole size
B
700 stitches / program (Overall cycle program stitch no. 3,000 stitches)
-2 -3
Schmetz 134 Nm90 Schmetz 134 Nm75
P-ROM (Custom made pattern can be added by the programming software for
Three phase 220 V, 380 V, 400 V 600 VA
A
C D
A: Max.6 mm
B: Max. zigzag stitch length 39 mm
C: Length of knife 4 – 32 mm
D: Max. buttonhole length 40 mm
4,000 sti/min
Pulse motor driven mechanism
Pulse motor driven mechanism
Pulse motor driven mechanism
13 mm max. (adjustable)
Double position solenoid
Standard equipment
Standard equipment
21
90
electronic pattern sewer)
Single phase 110 V, 220 V, 230 V
2193Q
HE-800A
2
2. SPECIFICATIONS
㧞-㧞
. Standard sewing pattern list
[1] Rectangle [2] Radial [3] Round [4] Straight bar tack
Rear tack
Front
Radial-rectangle Round-rectangle Eyelet-rectangle Rectangle-radial Round-radial Eyelet-radial
Rectangle-round Radial-round Eyelet-round
Eyelet-taper tack Rectangle-tack Radial-tack Round-tack Eyelet-tack
tack
[0] Free (Combinations of rear tack shapes and the front tack shapes - 17 patterns)
Rectangle-taper tack
Radial-taper tack Round-taper tack
* [0] to [4] indicate the setting range for parameter No. 1. (Refer to "5-5. Parameter table".)
* In addition to the above shapes, you can create and use up to 9 additional custom made patterns using the
programming software for electronic pattern sewer.
3
HE-800A
㧟
㧟-㧝
㧟-㧞
. OPTIONAL PARTS
3. OPTIONAL PARTS
. Special needle plate
. Leg parts
This needle plate uses the elasticity of rubber to
prevent the cutter from getting stuck and not returning.
It also helps to keep the cutter blade sharp.
* The standard cutter can be used.
Parts name Parts code
Needle plate set 1.2RB S51361-001
-2
Needle plate set 1.4RB S51362-001
Needle plate set 1.6RB S51363-001
Needle plate set 1.2RB-3 S51364-001
-3
Needle plate set 1.4RB-3 S51365-001
2037Q
Parts name Parts code
Spacer set 183504-109
2038Q
Caster set 183501-001
2039Q
Needle plate set 1.6RB-3 S51366-001
HE-800A
4
3. OPTIONAL PARTS
㧟-㧟
㧟-㧠
Horizontal
ruler
Vertical
ruler
. Standing operation pedal
Parts name Parts code
<Except for Europe>
J80380-040
Three pedals
<For Europe only>
2041Q
Harness for standing operation pedal S47750-000
3854Q
J80380-0E0
. Ruler
Parts name Parts code
Ruler assy 800E S50350-001
2043Q
Ruler assy S50477-001
2044Q
5
HE-800A
㧟-㧡
3. OPTIONAL PARTS
. Tape guard
2042Q
Tape guard winder assy
S50346-001
Tape winder assy
143767-102
Tape guard assy
S51896-001
HE-800A
6
4. INSTALLATION
㧠
㧠-㧝
. 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 56 kg.
The installation should be carried out by two or
more people..
Do not connect the power cord until installation is
complete, otherwise the machine may operate if
the treadle is depressed by mistake, which could
result in injury.
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.
x The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration
x The method for processing the table will vary depending on whether the positioning method is vertical or horizontal.
. Table processing diagram
of the sewing machine.
Make the holes in the correct places while referring to the table processing diagram which matches the positioning
method.
All cords should be secured at least 25 mm away
from any moving parts. Furthermore, do not
excessively bend the cords or secure them too
firmly 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.
Install the belt covers to the machine head and
motor.
[Vertical positioning]
7
4091M
HE-800A
㧠-㧞
[Horizontal positioning]
4. INSTALLATION
4095M
. Installing the motor
3856Q
Install the motor (1) with the three bolts (2), flat
washers (3), spring washers (4) and nuts (5).
HE-800A
8
4. INSTALLATION
㧠-㧟
㧠-㧠
Note: When opening the cover, hold it securely so that it does not fall down.
1. Remove the 12 screws (1), and then open the covers (main P.C. board mounting plate (2) and sub P.C. board
2. Install the control box with the bolts (4), cushions (5), cushion collars (6), rubber collars (7), flat washers (8) and nuts
3. Close the covers (main P.C. board mounting plate (2) and sub P.C. mounting plate (3)), and provisionally tighten
. Installing the flange nut
Install the four flange nuts (1) to the underside of the
work table.
Note:
When the machine head is positioned horizontally,
some flange nut installation locations may be
inaccessible after the control box has been installed.
3857Q
. Installing the control box
3858Q
mounting plate (3)).
(9) as shown in the illustration. At this time, leave a gap of approximately 2 mm between the work table and the top
of the box.
them with the screws (1). (They will be opened again when the cords are connected.)
9
HE-800A
㧠-㧡
㧠-㧢
4. INSTALLATION
1. Place the bed base (1) on top of the work table, and insert the four collars (2).
2. Provisionally tighten the four flange nuts (4) onto the four bolts (3), and then position the bed base (1).
3. Install the bed base (1) with the three flat washers (5) and wood screws (6), and then install the two rubber caps (7).
4. Remove the four bolts (3).
5. Set the magnet (8) in the position shown in the illustration.
. Installing the power switch
. Installing the bed base
3859Q
1. Install the power switch (1) with the two screws (2).
2. Secure the power switch (1) cord and the motor (4)
cord with the six staples (3).
4069M
HE-800A
10
4. INSTALLATION
㧠-㧣
㧠-㧤
. Installing the machine head
3861Q
3862Q
1. Place the two bed hinges (1) so that they are level
as shown in the illustration at left, and then place
the machine head gently on top of the bed base (3)
so that the cables (2) do not get clamped.
Note:
The bed base (3) is made from plastic, so be
careful not to hit it with the machine head when
placing the machine head on top of it.
2. Install the machine head with the four spring
washers (4) and four bolts (5).
Note:
Make sure that the felt support (6) do not touch
the bed base (3).
11
. Installing the head rest
2778Q
HE-800A
Tap the head rest (1) into the table hole.
Note:
Tap the head rest securely into the table hole.
If the head rest is not pushed in as far as it will go,
the machine head will not be sufficiently stable when
it is tilted back.
㧠-㧥
㧠-㧝㧜
4. INSTALLATION
. Installing the operation panel
Top of work table
Bottom of work table
Table
Table
3863Q
3864Q
The operation panel can be installed to either the top
or bottom of the work table.
1. Install the rear frame (1) to the work table (top or
bottom) with the four wood screws (2).
2. Install the front frame assembly (3) to the rear frame
(1) with the four screws (4).
* The vertical orientation of the front frame assembly
(3) is the same whether it is installed to the top or
the bottom of the work table.
* Pull the harnesses such as the ground harness out
of the way so that the operation panel side cover
(5) can be opened and closed.
3. Insert the connector cord (6) into the control box
through the hole at the side of the box.
. Routing the connector cord and installing the oil stopper plate
3865Q
3866Q
HE-800A
1. Gently tilt back the machine head.
2. Pass the cords (1) through the hole in the work
table.
3. Install the oil stopper plate (2).
4. Move the connector cord (1) so that it will not be
clamped by the machine head and the bed base (3),
and then return the machine head to its original
position.
12
4. INSTALLATION
㧠-㧝㧝
㧠-㧝㧝-㧝
㧠-㧝㧝-㧞
The harness is connected in the same way regardless of whether the machine head is positioned horizontally or
vertically.
1. Remove the 12 screws (1), and then open the covers (main P.C. board mounting plate (2) and sub P.C. board
mounting plate (3)).
Note: When opening the cover, hold it securely so that it does not fall down.
2. Insert the panel harness (4) into the control box.
3. Connect the ground wire (5) which is protruding out from the hole at the side of the control box to the leg (6).
4. Connect the ground wire (7) coming from the machine head to the grounding point (8) inside the control box.
5. Connect the ground wire in the panel harness to the ground point (9) inside the control box.
* Grounding marks are displayed on the machine head and inside the control box.
Note: If the shape of the grounding screw in the leg (6) requires a different ground wire to be connected, replace the
. Connecting the cords
. Connecting the ground wire
CAUTION
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.
Grounding mark
Grounding mark
3867Q
ground wire with the accessory ground wire.
If the ground wires are not connected, incorrect operation may result.
If the grounding point has been painted over, remove the paint coating before connecting the ground wire.
13
. Connecting the machine head harness
1. Insert the machine head harness (1) into the control
box.
2. Gently tilt back the machine head.
3. Pull the harness (1) through the cord clamp (2) at
the top of the control box.
* This cord clamp is not used when the machine
head is positioned horizontally.
3868Q
HE-800A
㧠-㧝㧝-㧟
4. INSTALLATION
. Connecting the motor harness
3869Q
3870Q
3871Q
1. Pass the motor harness (1) through the cord bush
(2).
2. Connect the connectors (3).
3. Secure the motor harness (1) with staples.
4. Securely insert each of the connectors (4) – (8) as
indicated below.
Harness Mark
Feed motor
(4)
<5-pin>(White)
Presser foot motor
(5)
<5-pin> (Blue)
Cutter solenoid
(6)
<6-pin>
Fan <3-pin>
(7)
Cutter home position
(8)
sensor <12-pin>
S2
S5
S8
S7
Sub P.C. board
P2㧔FDPM㧕
P5㧔FTPM㧕
P8㧔CUTTER㧕
P10㧔FAN1㧕
-
P7㧔OPSEN2㧕
indication
5. Securely insert the connectors (9) and (10) as
indicated below.
Note:
Take note of how these two harnesses are routed
through the control box so as not to confuse them
with any of the other harnesses.
Main P.C. board
indication
P16㧔NPM㧕
P19㧔OPSOL㧕
Zigzag motor
(9)
<6-pin>
Tension release
(10)
solenoid <6-pin>
Harness Mark
M16
M19
HE-800A
14
4. INSTALLATION
㧠-㧝㧝-㧠
3872Q
6. Securely insert each of the connectors (11) – (13)
as indicated below.
Harness Mark Main P.C. board
(11)
Synchronizer <5-pin>
Home position sensor
(12)
<12-pin>
(13)
Stop switch <11-pin>
indication
M3
M11
M10
P3㧔SYNC㧕
P11㧔ORG㧕
P10㧔HEAD㧕
7. Secure the harnesses inside the control box using
cord clamps as shown in the illustration.
Note:
• Make sure that the harnesses do not come into
contact with P.C. board components or with the
main P.C. board heat sink or the sub-P.C. board
heat sink.
• Use the cord clamps at the top of the control box
to adjust the harnesses so that they are not
loose inside the control box, particularly when
using the work table with the machine head
positioned vertically.
8. Gently return the machine head to its original position.
* Check that the harnesses do not touch the belt.
9. Close the covers (main P.C. board mounting plate and sub P.C. mounting plate), and tighten the 12 screws.
. Connecting the power cord
CAUTION
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.
1. Attach an appropriate plug to the power cord (1).
(The green and yellow wire is the ground wire.)
2. Insert the plug into properly-grounded AC power
supply.
Note:
• Do not use extension cord, otherwise machine
operation problems may result.
• Do not connect a power supply which is not of the
rated voltage, otherwise machine operation
problems may result.
Green and yellow wire
(ground wire)
15
4027Q
HE-800A
㧠-㧝㧝-㧡
4. INSTALLATION
. Connecting the standing operation pedal harness (option)
4111M
1. Pass the marked tube of the standing operation pedal harness (1) into the control box through the hole in the control
box.
2. Connect the standing operation pedal harness (1) to connector P9 on the main circuit board.
3. Remove the screw (2) which is securing the ground wires, and then add the ground wire (3) of the standing
operation pedal harness (1) and re-tighten the screw (2). (The green-and-yellow wire is the ground wire.)
4. Connect the harness (4) to the standing operation pedal harness (1).
* Connect the harness (4) and the standing operation pedal harness (1) inside the control box.
HE-800A
16
4. INSTALLATION
㧠-㧝㧝-㧢
. Installing the transformer
The transformer can be installed on the floor, on the work table leg (on top of the leg or on the treadle support plates)
or underneath the work table.
Check the power supply rating label on the transformer to confirm that the voltage ratings for the transformer and the
control box are identical.
1) Floor installation
Select a suitable location, and place the transformer
on the floor in that location.
* Select a location where the transformer will not be an
obstruction to people walking past.
2069Q
2) Table leg installation (on top of table leg)
2070Q
Mounting
bracket
112.5mm
Screw (M5 x 8)
2071Q
3) Table leg installation (treadle support plates)
3875Q
3876Q
Washer
Screw (M6 x 14)
4035Q
Secure the transformer to the top of the table leg using
the mounting bracket and screws.
* The mounting bracket and screws must be obtained
separately.
1. Remove the four screws (1), and then remove the
two handles (2).
2. Place the transformer on top of the two treadle
support plates (3) as shown in the diagram, and
then secure it to the handle (2) using the washers
and screws.
* The washers and screws must be obtained
separately.
17
HE-800A
4) Installation underneath the work table
Work table hole positions
4. INSTALLATION
3878Q
2075Q 3877Q 3879Q
Standard BROTHER work tables are provided with installation holes for use in installing the transformer.
1. Remove the four screws (1), and then remove the two handles (2).
2. Use the bolts (4), flat washers (5), spring washers (6) and nuts (7) to install the transformer as shown in the
illustration, while leaving a gap of 2 mm between the work table and the cushion collars (3).
* Use the bolts, flat washers, spring washers, nuts and cushion collars which are included.
Connecting the cords
3880Q 3881Q
1. Loosen the four screws (1), and then remove the transformer cover (2).
2. Connect the control box connector (3) to the transformer connector (4).
3. Secure the connected cords with the cord holder (5) and the screw (6), and place them inside the transformer cover
(2).
4. Install the transformer cover (2) with the four screws (1).
5. Secure the cords to the work table using staples.
HE-800A
18
4. INSTALLATION
㧠-㧝㧞
. Installing the V-belt
3882Q
3883Q
3884Q
1. Remove the four screws (1), and then remove the
motor belt cover (2).
2. Gently tilt back the machine head, and then place
the V-belt (3) into the V grooves in the machine
head pulley and the motor pulley.
3. Turn the two nuts (4) to adjust so that there is 10 14 mm of deflection in the V-belt (3) when it is
pressed at the midway point with a force of 5 N.
Note:
If the V-belt tension is too loose, or if the V-belt is
stretched, the following problems could occur.
a. The stopping position may shift,
b. The needle bar may drift when the machine stops,
c. An extra stitch may be sewing when the machine
stops,
d. An abnormal noise may be heard due to V-belt
slipping, and
e. The V-belt may become too loose and contact
with the cover.
If any such problems occur, adjust by following the
procedure described above.
4. Secure the motor belt cover (2) and the auxiliary
motor belt cover (5) with the four screws (1) as
shown in the illustration so that they do not touch
the V-belt (3).
19
HE-800A
㧠-㧝㧟
4. INSTALLATION
Adjusting the belt holder
1. Loosen the screw (1).
2. Align the boss of the belt holder (2) with the mark
(3).
3. After adjusting, tighten the screw (1).
Adjusting the finger protector
1. Loosen the screw (4).
2. Align the center of the screw (4) with the mark (5) to
adjust the position of the finger protector (6).
3. After adjusting, tighten the screw (4).
3885Q
Note: If the machine head is positioned horizontally, there is no need to install the belt cover plate.
Install the belt cover (1) with the two wood screws (3) so that it does not touch the motor belt cover (2).
* Set the belt cover plate (1) so that there is a gap of 3 mm or more in the longer motor direction, and also should not
be projected out from the edge of the work table.
. Installing the belt cover plate
3 mm or more
3887Q3886Q
HE-800A
20
4. INSTALLATION
㧠-㧝㧠
. Installing the treadle connecting rod
Install the connecting rod (1) to the treadle lever (2)
with the nut (3).
3888Q
Fig. A Fig. B
3890Q3889Q
Adjusting the treadle pressure
If the machine starts running when your foot is simply resting on the treadle, or if the treadle pressure is too weak,
adjust the position (a to c) at which the treadle spring (4) is hooked onto the treadle lever (2).
The treadle pressure will increase from position a to position c.
Adjusting the treadle return pressure
1. Loosen the nut (5) and turn the bolt (6).
* The treadle return pressure becomes heavier as the bolt (6) is tightened, and becomes lighter as the bolt (6) is
loosened.
2. Tighten the nut (5).
Adjusting the treadle stroke
Remove the nut (3), and then move connecting rod joint (7) from the position in figure A to the position in figure B.
The treadle stroke will increase by approximately 1.25 times.
* This adjustment will also affect the treadle pressure and the treadle return pressure, so these settings should be
readjusted if necessary.
21
HE-800A
㧠-㧝㧠-㧝
4. INSTALLATION
. Changing the treadle unit installation position (horizontal positioning only)
Note: If the machine head is positioned horizontally, install the treadle unit to the motor.
3891Q
1. Disconnect the connector (2) of the treadle unit (1) inside the control box.
2. Remove the screw (3), and then disconnect the ground wire. Then, re-tighten just the screw (3).
3. Remove the three screws (4), and then remove the treadle unit (1).
4. Install the V cord bushing (6) to the treadle setting plate (5).
5. Install the treadle setting plate (5) and the treadle unit (1) to the motor with the three screws (4).
6. Install the ground wire with the screw (7).
7. Re-connect the connector (2) of the treadle unit (1) inside the control box.
3893Q3892Q
HE-800A
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