HE-800A - Amazon S3
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
DANGER
The instructions which follow this term indicate situations where failure to follow the
instructions will almost certainly result in death or severe injury.
CAUTION
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.
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 (
¦¦¦¦¦¦
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”.)
) indicates something that you must not do.
HE-800A
i
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 face plate 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 highfrequency welders.
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 electrical
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.
Avoid exposure to direct sunlight during use.
Exposure to direct sunlight 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 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.
ii
HE-800A
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.
CAUTION
Sewing
This sewing machine should only be used by operators who have received the necessary training in safe
use beforehand.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
The sewing machine should not be used for any
applications other than sewing.
Attach all safety devices before using the sewing
machine. If the machine is used without these devices
attached, injury may result.
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.
• When threading the needle
• When replacing the needle and bobbin
• When not using the machine and when leaving the
machine unattended
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.
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.
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.
• When carrying out inspection, adjustment and maintenance
• When replacing consumable parts such as the rotary hook
Turn off the power switch before inserting or removing
the plug, otherwise damage to the control box could
result.
HE-800A
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.
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
2
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.
4
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.
6
High temperature
warning display
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.
7
Direction of operation
5
Thread take-up cover
Belt cover
Eye guard
Belt cover plate
Finger guard
3852Q
iv
HE-800A
CONTENTS
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
1. NAME OF EACH PART ....................... 1
2. SPECIFICATIONS................................ 2
2-1. Specifications ................................................. 2
2-2. Standard sewing pattern list........................... 3
3. OPTIONAL PARTS .............................. 4
3-1. Special needle plate.......................................
3-2. Leg parts ........................................................
3-3. Standing operation pedal ...............................
3-4. Ruler...............................................................
3-5. Tape guard.....................................................
3-6. Auxiliary table.................................................
3-7. PD-8000, Programmer ...................................
4
4
5
5
6
6
6
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
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
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
HE-800A
7-5-1.
7-5-2.
7-5-3.
7-5-4.
7-5-5.
Lower thread tension .......................... 61
Upper thread tension .......................... 62
Thread take-up spring height .............. 63
Thread take-up spring tension ............ 63
Adjusting arm thread guide ................. 63
12. PROGRAM INITIALIZATION ............. 80
12-1. Initializing all programs .................................80
12-2. Initializing a single program ..........................80
13. CHANGING FUNCTIONS USING
THE DIP SWITCHES.......................... 81
8. SEWING ............................................... 64
13-1. Panel DIP switches.......................................81
13-2. Circuit board DIP switches............................83
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
14. ERROR CODE TABLE....................... 85
15. GAUGE PARTS LIST......................... 89
16. TROUBLESHOOTING ....................... 92
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
HE-800A
16-1. Upper thread breakage.................................92
16-2. Skipped stitches ...........................................93
16-3. Uneven seams (1) ……
At the sewing start.....................................94
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 ....96
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
HE-800A
1. NAME OF EACH PART
1. NAME OF EACH PART
3853Q
(1) Power switch
(4) Treadle
(7) Spool stand
(2) Control box
(5) AC servo motor
(8) Pulley
(3) Operation panel
(6) Stop switch
(9) Tension release lever
Safety devices
(10) Eye guard
(13) Belt cover plate
(16) Belt retainer
(11) Thread take-up cover
(14) Finger guard
(12) Belt cover
(15) Finger protector
1
HE-800A
2. SPECIFICATIONS
2. SPECIFICATIONS
2-1. Specifications
Main use
-2
Buttonhole size
A
Buttonholes for clothing such as dress
shirts, blouses, work clothes and women's
clothes
Buttonholes for knitted garments such as
knitted underwear, sweaters, cardigans
and jerseys
B
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
-3
2193Q
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
4,000 rpm
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
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
electronic pattern sewer)
Single phase 110 V, 220 V, 230 V
Three phase 220 V, 380 V, 400 V 600 VA
HE-800A
2
2. SPECIFICATIONS
2-2. Standard sewing pattern list
[1] Rectangle
[2] Radial
[3] Round
[4] Straight bar tack
Rear tack
Front tack
[0] Free (Combinations of rear tack shapes and the front tack shapes - 17 patterns)
Radial-rectangle Round-rectangle Eyelet-rectangle
Rectangle-radial
Round-radial
Eyelet-radial
Rectangle-round
Radial-round
Eyelet-round
Rectangle-taper tack
Radial-taper tack
Eyelet-taper tack
Rectangle-tack
Radial-tack
Round-tack
Eyelet-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
3. OPTIONAL PARTS
3. OPTIONAL PARTS
3-1. Special needle plate
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
-2
-3
2037Q
Parts code
Needle plate set 1.2RB
S51361-001
Needle plate set 1.4RB
S51362-001
Needle plate set 1.6RB
S51363-001
Needle plate set 1.2RB-3
S51364-001
Needle plate set 1.4RB-3
S51365-001
Needle plate set 1.6RB-3
S51366-001
3-2. Leg parts
Parts name
Parts code
Spacer set
183504-109
Caster set
183501-001
2038Q
2039Q
HE-800A
4
3. OPTIONAL PARTS
3-3. Standing operation pedal
Parts name
Parts code
Two pedals + work clamp lifter pedal
J80081-040
Three pedals
J80380-040
Harness for standing operation pedal
S47750-000
2040Q
2041Q
3854Q
3-4. Ruler
Parts name
Horizontal
ruler
Parts code
Ruler assy 800E
S50350-001
Ruler assy
S50477-001
2043Q
Vertical
ruler
2044Q
5
HE-800A
3. OPTIONAL PARTS
3-5. Tape guard
Tape guard winder assy
S50346-001
Tape winder assy
143767-102
Tape guard assy
S51896-001
2042Q
3-6. Auxiliary table
Auxiliary table assembly
S53996-101
2045Q
3-7. PD-8000, Programmer
You can use the icon keys to retrieve parameters at a
single touch, and to display them as icons on the LED
screen so that the settings can be changed easily. It
allows you to easily transfer data between different
sewing machines.
3855Q
HE-800A
6
4. INSTALLATION
4. INSTALLATION
CAUTION
Machine installation should only be carried out by
a qualified technician.
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.
Contact your Brother dealer or a qualified
electrician for any electrical work that may need to
be done.
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 sewing machine head weighs more than 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 ma-chine may operate if
the treadle is depressed by mistake, which could
result in injury.
Install the belt covers to the machine head and
motor.
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.
4-1. Table processing diagram
Use the power table which has been specially
designed for each sewing machines.
Table/legs assembly
Positioning
Vertical
Horizontal
Model code
BLL-H80-200-01
BLL-H80-201-01
If using a commercially-available table, process it as shown in the illustration below.
Note:
The thickness of the table should be at least 40 mm, and it should be strong enough to bear the weight and vibration
of the sewing machine.
[Vertical positioning]
2194Q
7
HE-800A
4. INSTALLATION
[Horizontal positioning]
2195Q
4-2. Installing the motor
Install the motor (1) with the three bolts (2), flat
washers (3), spring washers (4) and nuts (5).
3856Q
HE-800A
8
4. INSTALLATION
4-3. 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
4-4. Installing the control box
Note: When opening the cover, hold it securely so that it does not fall down.
3858Q
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)).
2. Install the control box with the bolts (4), cushions (5), cushion collars (6), rubber collars (7), flat washers (8) and nuts
(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.
3. Close the covers (main P.C. board mounting plate (2) and sub P.C. mounting plate (3)), and provisionally tighten
them with the screws (1). (They will be opened again when the cords are connected.)
9
HE-800A
4. INSTALLATION
4-5. Installing the power switch
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).
3859Q
4-6. Installing the bed base
3860Q
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).
HE-800A
10
4. INSTALLATION
4-7. Installing the machine head
3861Q
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).
3862Q
4-8. Installing the head rest
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.
2778Q
11
HE-800A
4. INSTALLATION
4-9. Installing the operation panel
Top of work table
3863Q
Table
Bottom of work table
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.
Table
3864Q
4-10. Routing the connector cord and installing the oil stopper plate
3865Q
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.
3866Q
HE-800A
12
4. INSTALLATION
4-11. Connecting the cords
The harness is connected in the same way regardless of whether the machine head is positioned horizontally or
vertically.
4-11-1. 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
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, re-place the
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.
4-11-2. 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
13
HE-800A
4. INSTALLATION
4-11-3. Connecting the motor harness
1. Pass the motor harness (1) through the cord bush
(2).
2. Connect the connectors (3).
3. Secure the motor harness (1) with staples.
3869Q
4. Securely insert each of the connectors (4) – (8) as
indicated below.
Harness
(4)
(5)
(6)
Feed motor
<5-pin>(White)
Presser foot motor
<5-pin> (Blue)
Cutter solenoid
<6-pin>
(7)
Fan <3-pin>
(8)
Cutter home position
sensor <12-pin>
Mark
Sub P.C. board
indication
S2
P2㧔FDPM㧕
S5
P5㧔FTPM㧕
S8
P8㧔CUTTER㧕
S7
P10㧔FAN1㧕
P7㧔OPSEN2㧕
3870Q
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.
Harness
(9)
(10)
Zigzag motor
<6-pin>
Tension release
solenoid <6-pin>
Mark
Main P.C. board
indication
M16
P16㧔NPM㧕
M19
P19㧔OPSOL㧕
3871Q
HE-800A
14
4. INSTALLATION
6. Securely insert each of the connectors (11) – (13) as
indicated below.
Harness
(11)
(12)
(13)
3872Q
Synchronizer <5-pin>
Home position sensor
<12-pin>
Stop switch <11-pin>
Mark
Main P.C. board
indication
M3
P3㧔SYNC㧕
M11
P11㧔ORG㧕
M10
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.
4-11-4. Connecting the power cord
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.
4027Q
15
HE-800A
4. INSTALLATION
4-11-5. Connecting the standing operation pedal harness (option)
3874Q
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
4-11-6. 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
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.
Screw (M5 x 8)
112.5mm
2071Q
3) Table leg installation (treadle support plates)
3875Q
4035Q
Washer
Screw (M6 x 14)
3876Q
17
HE-800A
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.
4. INSTALLATION
4) Installation underneath the work table
3878Q
Work table hole positions
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
4-12. Installing the V-belt
3882Q
3883Q
3884Q
19
HE-800A
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).
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
4-13. Installing the belt cover plate
Note: If the machine head is positioned horizontally, there is no need to install the belt cover plate.
3 mm or more
3886Q
3887Q
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.
HE-800A
20
4. INSTALLATION
4-14. Installing the treadle connecting rod
Install the connecting rod (1) to the treadle lever (2)
with the nut (3).
3888Q
Fig. A
3889Q
Fig. B
3890Q
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
4. INSTALLATION
4-14-1. 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
3892Q
3893Q
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.
HE-800A
22
4. INSTALLATION
4-15. Installing the spool stand
Assemble the spool stand (1) while referring to the
spool stand instruction manual, and then install the
spool stand (1) at the left side of the work table.
3894Q
4-16. Installing the eye guard
CAUTION
Attach all safety devices before using the sewing machine. If the machine is used without these devices
attached, injury may result.
[Vertical positioning]
[Horizontal positioning]
3895Q
3896Q
[Vertical positioning]
Install the eye guard (1) with the screw SM4.76-32x6 (2) and the flat washer (3).
[Horizontal positioning]
1. Install the eye guard support (4) to the machine head with the screw (5).
2. Install the eye guard (6) with the screw SM4.76-32x6 (7) and the flat washer (8).
23
HE-800A
4. INSTALLATION
4-17. Lubrication
CAUTION
Turn off the power switch before starting lubricating, 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
diarrhoea.
Keep the oil out of the reach of children.
Note:
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 <Nisseki Mitsubishi Sewing Lube 10 N; 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>
4-17-1. Lubricating the bed base
3897Q
1. Gently tilt back the machine head.
2. Set the magnet (1) in place.
3. Slowly pour in lubricating oil until the oil level reaches the “HIGH” mark.
4. Gently return the machine head to its original position.
* Periodically tilt back the machine head and check the lubricating oil level. If the oil level drops below the “LOW” mark,
add more lubricating oil.
* Replace the lubricating oil about once every six months.
HE-800A
24
4. INSTALLATION
4-17-2. Lubricating the arm
Apply 5-6 drops of oil to the oil inlet (1) at the top of the
arm.
* When using the machine, check that the oil is visible
through the oil window (2). If it cannot be seen,
problems such as seizure of the mechanism may
occur.
3898Q
4-17-3. Lubricating the rotary hook
When first installing the machine and when the
machine has not been used for an extended period of
time, remove the bobbin and add 2-3 drops of oil to the
rotary hook race (1) before sewing.
3899Q
Rotary hook lubrication adjustment
1. Remove the rubber cap (2).
2. Turn the adjusting screw (3) to adjust the lubrication
amount.
* Adjust so that approximately 10 drops of oil are
released when the sewing machine is run at a speed
of 4,000 rpm for three cycles to sew about 114
stitches. Use Kraft paper (4) or similar to catch the oil
drops. As a guide, the optimum position can be
obtained if the adjusting screw (3) is tightened as
much as possible and then loosened about two
turns.
More
Less
3900Q
25
HE-800A
4. INSTALLATION
4-18. Installing the belt cover
3901Q
1. Attach the two rubber caps (1) to the belt cover (2).
2. Insert the belt cover (2) in the direction of the arrow, and then secure it with the two screws (3), the screw (4) and the
flat washer (5).
Note: When tilting back the machine head, remove the screws (3), loosen the screw (4) and then remove the belt cover
(2).
HE-800A
26
5. OPERATION
5. OPERATION
5-1. Name and function of each operation panel item
3902Q
(1) Power indicator
Illuminates when the power is turned on.
(2) Warning indicator
Illuminates when an error occurs, and after the RESET key is pressed to lower the work clamp but the needle is not
at the up stop position when the machine pulley turns.
Also, illuminates as a warning when a dangerous situation occurs, such as if the machine is connected to a highvoltage power supply by mistake.
If the warning indicator is illuminated, the sewing machine will not start even if the treadle is depressed.
(3) RESET key
Used to reset errors, and to raise and lower the work clamp.
(4) Cutter on indicator
When this indicator is illuminated, the cutter operates during automatic sewing. When it is switched off, the cutter
does not operate during automatic sewing.
(5) CUTTER ON key
This key is used to turn cutter operation during automatic mode, test feed mode, manual mode and program mode
on and off. When cutter operation is turned on, the cutter on indicator illuminates.
(6) Program number LED
Displays the program number in automatic mode, test feed mode and manual mode.
Displays the parameter number in program mode.
* The program number changes in the order 1 → 2 → ... → 90 → P1 → ... → P9 → C1 → ... → C9 → C0. → ... C9.
→ 1. P1 to P9 are programs that are created by the programming software for the electronic pattern sewer, and
C1 to C9. are cycle programs.
(7) Program No. UP key
Press to increase the value in the program number LED.
27
HE-800A
5. OPERATION
(8) Program No. DOWN key
Press to decrease the value in the program number LED.
(9) Automatic mode indicator
Illuminates during automatic mode. The normal sewing mode is when the automatic mode indicator is illuminated.
(10) Test feed mode indicator
Illuminates during test feed mode. This mode is used to check the number of stitches in the sewing pattern.
(11) Manual mode indicator
Illuminates during manual mode. In this mode, a single stitch is sewn each time the machine pulley is turned
manually.
(12) Program mode indicator
This mode is used to set the various parameters for sewing programs.
If the program no. UP key and the ENTER key is pressed simultaneously while parameter setting is being carried
out, the mode changes to memory switch setting mode. If the program no. UP key and the ENTER key is
simultaneously pressed during memory switch setting mode, the mode changes to cycle program setting mode.
(13) SELECT key
This key is used to change between automatic mode, test feed mode, manual mode and program mode.
(14) Parameter display LED
• In automatic mode, this display shows the production counter, lower thread counter or error codes.
• In test feed mode and manual mode, the number of stitches remaining is displayed.
• In program mode, the parameter details are shown.
(15) Parameter UP key
Used to increase parameter values.
(16) Parameter DOWN key
Used to decrease parameter values.
(17) ENTER key
Used to accept a program number during automatic mode. Used to accept changed values for parameter settings
during program mode.
If you depress the treadle to start the sewing machine while the ENTER key is being pressed during automatic
mode, only the sewing machine will operate and the mode will change to lower thread winding mode.
HE-800A
28
5. OPERATION
5-2. Home position detection (preparation)
3903Q
3904Q
Before starting home position detection, check
that the needle bar is at its highest position.
Turn the machine pulley so that the index mark (1) on
the pulley is inside the mark (2) on the belt cover.
If the machine is started while the index mark (1) is not
inside the mark (2), error message "E-02" will be
displayed. At this time, the error will be cleared if you
turn the machine pulley to set the needle to the needle
up stop position.
Note:
When transporting and installing the sewing
machine, the thread trimming mechanism may
move so that the machine pulley cannot be turned.
In such cases, do not force the pulley to turn.
Move the thread trimming mechanism to the home
position, or turn the machine pulley in the reverse
direction to set the needle to the needle up stop
position.
3905Q
1. Turn on the power.
* The POWER indicator (3) will illuminate and the model number will appear for one second in the parameter display
LED (4).
After this, "--" will appear in the program number LED (5) and "----" will appear in the parameter display LED (4).
2. Depress the treadle to the 2nd step [C], and then release it.
* The sewing machine will move to the home position, and the work clamp will move to the neutral position.
* After the home position has been reached, the mode will change to the mode which was active when the power was
turned off (automatic/test feed/manual/program).
29
HE-800A
5. OPERATION
5-3. Operating the treadle
3906Q
After sewing
Fig. 2
Fig. 5
Fig. 1
Fig. 3
Insertion and removal of
the material
Normal position
Buttonhole positioning
Fig. 4
Sewing
1. When the treadle is not depressed [A], the work clamp is at the neutral position. (Figure 1)
* The work clamp lifter height at the neutral position can be changed to between 1 mm and 13 mm using memory
switch No. 05. (Initial value is 10 mm.)
2. When the treadle is depressed to the 1st step [B], the work clamp lowers, and when the treadle is returned to [A], the
work clamp returns to the neutral position.
* When memory switch No. 06 is set to off, the work clamp is lowered to its lowest position. (Figure 2)
If memory switch No. 06. is set to between 0.1 – 8.0 mm, the work clamp is lowered to the height which has been
set. This is useful for positioning the material. (Light work clamp) (Figure 3)
3. When the treadle is depressed to the 2nd step [C], the machine starts sewing. (Figure 4)
4. When the treadle is depressed backward to the position in [D], the work clamp rises to the height which has been set
using memory switch No. 04. This is useful for inserting and removing the material. (Figure 5)
* The work clamp rises while the treadle is being depressed backward, and it returns to the neutral position when the
treadle is released.
HE-800A
30
5. OPERATION
5-3-1. Operating the standing operation pedal (option)
Note: Set the circuit board DIP switch 2 - No.1 to ON. (Refer to “13. CHANGING FUNCTIONS USING THE DIP
SWITCHES”.)
Two pedals + Work clamp lifter pedal
When the work clamp pedal (left side) is depressed,
the work clamp lowers, and when it is depressed once
more, the work clamp returns to the neutral position.
When the start pedal (right side) is depressed, sewing
starts.
When the work clamp lifter pedal is pushed toward the
outside, the work clamp rises while the pedal is being
pushed. (functions in the same way as depressing the
treadle backward.)
Start pedal
Work clamp
lifter pedal
Work clamp
pedal
3907Q
Three pedals
When the work clamp pedal (middle) is depressed, the
work clamp lowers, and when it is depressed once
more, the work clamp returns to the neutral position.
When the start pedal (right side) is depressed, sewing
starts.
When the work clamp lifter pedal (left side) is
depressed, the work clamp rises while the pedal is
being depressed. (functions in the same way as
depressing the treadle backward.)
Start pedal
Work clamp
lifter pedal
Work clamp
pedal
3908Q
When circuit board DIP switch 2 - No. 3 is set to ON, you can set the work clamp to lower while the work clamp
pedal is being depressed.
31
HE-800A
5. OPERATION
5-4. Program setting method
The parameters for program numbers 1 to 90 are all set to their default values at the time of shipment. (Refer to “5-5.
Parameter table”.)
3909Q
1. Press the SELECT key (1) to change the mode to automatic, test feed or manual mode.
2. Press the program No. keys (2) and (3) to select the program number (1 - 90) for the program to be changed.
* The program number will flash in the program number LED (4).
3. Press the ENTER key (5).
* The program number will be accepted and the program number LED (4) will stop flashing and illuminate steadily.
Note: The program number will not be accepted if the ENTER key (5) is not pressed.
4. Press the SELECT key (1) to change the mode to program mode.
* The parameter number for the program number that was selected above will appear in the program number LED (4),
and the parameter setting value will appear in the parameter display LED (6).
5. Press the program No. keys (2) and (3) to select the number for the parameter to be changed.
6. Press the parameter keys (7) and (8) to change the parameter setting, and then press the ENTER key (5).
* The parameter setting will be changed and the parameter display LED (6) will stop flashing and illuminate steadily.
Note: The setting will not be changed if the ENTER key (5) is not pressed.
7. Press the SELECT key (1) to change the mode to automatic mode.
The setting details can be saved in the pro-gram notes of the program memos for easy checking. (Refer to
“5-12. Using the program memos”.)
HE-800A
32
5. OPERATION
5-4-1. Program setting examples
Example 1: How to make a buttonhole (round) setting for program number 3.
3910Q
Set parameter number 01 to "buttonhole stitch
(round) setting value 3".
1. Press the SELECT key (1) to change the mode to
automatic, test feed or manual mode.
2. Press the program No. keys (2) and (3) to select the
program number 3, and then press the ENTER key
(4).
3. Press the SELECT key (1) to change the mode to
program mode.
4. Press the program No. keys (2) and (3) to select the
parameter number 01.
5. Press the parameter keys (5) and (6) to select the
parameter setting value 3, and then press the
ENTER key (4).
6. Press the SELECT key (1) to change the mode to
automatic mode.
A round buttonhole sewing pattern has now been
set for program No. 03.
3911Q
33
HE-800A
5. OPERATION
Example 2: How to set a taper tack for the front tack pattern and an eyelet for the rear tack pattern to program number
10.
3912Q
First, set parameter number 01 to "buttonhole
stitch (free) setting value 0".
1. Press the SELECT key (1) to change the mode to
automatic, test feed or manual mode.
2. Press the program No. keys (2) and (3) to select the
program number 10, and then press the ENTER key
(4).
3. Press the SELECT key (1) to change the mode to
program mode.
4. Press the program No. keys (2) and (3) to select the
parameter number 01.
5. Press the parameter keys (5) and (6) to select the
parameter setting value 0, and then press the
ENTER key (4).
3913Q
Next, set parameter number 20 to "Taper tack
setting value 4".
6. Press the program No. keys (2) and (3) to select the
parameter number 20.
7. Press the parameter keys (5) and (6) to select the
parameter setting value 4, and then press the
ENTER key (4).
3914Q
Next, set parameter number 30 to "Eyelet setting
value 3".
8. Press the program No. keys (2) and (3) to select the
parameter number 30.
9. Press the parameter keys (5) and (6) to select the
parameter setting value 3, and then press the
ENTER key (4).
An eyelet taper-tack buttonhole has now been set
for program No. 10.
3915Q
HE-800A
10. Press the SELECT key (1) to change the mode to
automatic mode.
34
5. OPERATION
Example 3: How to copy the settings for program No. 3 to program No. 11.
3916Q
Set parameter number 69 to "Copy source program
number setting value 3".
1. Press the SELECT key (1) to change the mode to
automatic, test feed or manual mode.
2. Press the program No. keys (2) and (3) to select
the program number 11, and then press the
ENTER key (4).
3. Press the SELECT key (1) to change the mode to
program mode.
4. Press the program No. keys (2) and (3) to select
the parameter number 69.
5. Press the parameter keys (5) and (6) to select the
parameter setting value 3, and then press the
ENTER key (4).
The parameters for program number 3 will then be
copied to the parameters for program number 11.
6.
Press the SELECT key (1) to change the mode to
automatic mode.
3917Q
5-4-2. Checking the length of knife
3918Q
1. Press the SELECT key (1) to change the mode to
automatic, test feed or manual mode.
2. Press the program No. keys (2) and (3) to select the
program number 11, and then press the ENTER key
(4).
3. Press the SELECT key (1) to change the mode to
program mode.
4. Press the program No. keys (2) and (3) to select the
parameter number 02 (length of knife).
5. Check that the length of the knife that is installed to
the sewing machine matches the knife length setting
that is being displayed in the parameter display LED
(5).
6. If the knife lengths are different, press the parameter
keys (6) and (7) until the knife length setting
matches the length of the knife that is installed to the
sewing machine, and then press the ENTER key (4).
Note:
Be sure to change the knife length setting if the knife is replaced with a knife of a different length.
The stitch length will be automatically determined by the value for the length of the knife which has been set.
Therefore, if the knife length is not set correctly, problems may occur, such as the bar tacking stitches being cut by
the knife.
35
HE-800A
5. OPERATION
5-5. Parameter table
▪ The parameter values can be stored independently for each program.
▪ The allowable setting range for some parameters may vary from the range specified, depending on the settings of
other parameters. (Refer to “5-5-4. Main restrictions when setting parameters”.)
• Depending on the needle zigzag amount and feed amount settings, it may not be possible to carry out sewing at some
setting speeds.
▪ The zigzag width ratio cannot be set when the rear tack pattern is set to an eyelet pattern.
▪ If all underlays have been set, the order of sewing is underlays sewn together, then saw-shape underlays and then
rectangle underlays.
• Parameters that are not applicable to a particular program will be skipped and not displayed.
No.
00
01
Setting items
Setting range
Unit
Default
3,600
1
Sewing speed (zigzag part)
Buttonhole stitch/Straight tack stitch
0: 1:
2:
3:
4:
1,000 - 4,000rpm
0: Buttonhole (free)
1: Buttonhole (rectangle)
2: Buttonhole (radial)
3: Buttonhole (round)
4: Bar tack
100
1
02
Length of knife
4.0 - 32.0mm
However, when panel DIP
switch B – No. 3, No. 4 and
No. 5 are at OFF, OFF and
ON
respectively
when
initialization is carried out, the
initial value will be set to 6.0.
0.1
13.0
(6.0)
04
Zigzag pitch
0.10 - 2.00mm
0.025
0.350
05
Zigzag width
1.0 - 3.0mm
0.1
1.5
06
Knife X space
-0.4 - 1.0mm
0.1
0.4
07
Knife Y space
0.00 - 2.00mm
0.05
1.00
HE-800A
36
5. OPERATION
No.
08
Knife X position alignment
Setting items
-0.5 - 0.5mm
Setting range
Unit
0.1
0.0
09
Knife Y position alignment
-0.8 - 0.8mm
0.1
0.0
10
Zigzag width ratio (at left)
0.30 - 0.70
0.01
0.50
11
Stitch type
Whip (W):
1
1
Purl (P):
Rear tack
Left zigzag stitch
Right zigzag stitch
Front tack
3919Q
3920Q
37
HE-800A
Default
5. OPERATION
* Nos. 13 to 19 are for straight bar tacks.
No.
13
Straight bar tack length
Setting items
7.0 - 40.0mm
Setting range
0.1
Default
13.0
14
Straight bar tack pitch
0.2 - 2.0mm
0.1
0.8
15
Straight bar tack width
1.5 - 6.0mm
0.1
2.0
16
17
Running speed
Running length
1,000 - 3,000rpm
3.0 - 32.0mm
100
0.1
2,000
11.0
18
Running pitch
1.0 - 5.0mm
0.1
2.0
19
Running width
0.5 - 3.0mm
0.1
1.0
HE-800A
Unit
38
5. OPERATION
No.
20
Front tack pattern
Setting items
21
Front tack length (except taper tack)
0.5 - 5.0mm
22
Front tack pitch (except radial)
0.05 - 1.00mm
23
Front tack width correction (except radial)
-2.0 - 2.0mm
24
No. of front tack stitch (radial)
5 - 11 stitches
25
Taper tack length (taper tack)
26
Front tack sideways correction (rectangle only)
Rectangle
39
Radial
Setting range
0: Rectangle
1: Radial
2: Round
3: Tack
4: Taper tack
Round
Tack
Unit
Default
1
0
0.1
1.0
0.05
0.30
0.1
0.0
2
7
1.0 - 5.0mm
0.1
3.0
-1.0 - 1.0mm
0.1
0.0
Taper tack
HE-800A
5. OPERATION
No.
30
Rear tack pattern
Setting items
31
Setting range
Unit
Default
0: Rectangle
1: Radial
2: Round
3: Eyelet
1
0
Rear tack length (except eyelet)
0.5 - 5.0mm
0.1
1.0
32
Rear tack pitch (except radial, eyelet)
0.05 - 1.00mm
0.05
0.30
33
Rear tack width correction
(except radial, eyelet)
-2.0 - 2.0mm
0.1
0.0
34
No. of rear tack stitch (radial, eyelet)
5 – 11 stitches
2
7
35
Eyelet buttonhole radius (eyelet type only)
1.0 - 3.0mm
0.1
2.0
Rectangle
Radial
Round
Eyelet
HE-800A
40
5. OPERATION
No.
36
Rear tack sideways correction (rectangle only)
Setting items
-1.0 - 1.0mm
37
Rear tack vector shape(rectangle only)
1:
41
2:
Setting range
3:
Unit
Default
0.1
0.0
1: Triangle
2: Rectangle
3: Saw-shape
1
1
38
No. of stitches in X direction for saw-shaped rear
tack vector shape (When sewing saw-shaped rear
tack stitches for rectangular buttonholes)
2 - 14 stitches
2
4
39
No. of stitches in Y direction for saw-shaped rear
tack vector shape (When sewing saw-shaped rear
tack stitches for rectangular buttonholes)
1 - 5 stitches
1
1
40
Start backtack
0 - 6 stitches
2
2
41
Start backtack width
0.5 - 3.0mm
0.1
0.5
42
Start backtack pitch
0.10 - 0.80mm
0.05
0.30
HE-800A
5. OPERATION
No.
43
End backtack
Setting items
1 - 6 stitches
1
4
44
Cutter operation
0: Operates when the front tack
of the last cycle is sewn
(standard)
1: Operates when sewing is
finished and material is
feeding.
2: Operates immediately before
the left zigzag stitch of the
last cycle is sewn.
3: Operates twice: immediately
before the left zigzag stitch of
the last cycle is sewn and
when the front tack of the last
cycle is sewn.
However, 2 and 3 are only valid
for two cycles or more.
0-1
1
0
1
0
0:
1:
2:
3:
Setting range
Unit
Default
45
No. of underlays sewn together
46
Saw-shaped underlays
0: No saw-shaped underlays
1: Front and rear tack
2: Rear tack only
3: Front tack only
1
0
47
No. of rectangle underlays
0-9
1
0
48
49
Underlay speed
Underlay feed pitch
1,000 - 3,000rpm
0.5 - 6.0mm
100
0.1
2,000
2.0
HE-800A
42
5. OPERATION
No.
50
Underlay offset
Setting items
0.3 - 1.0mm
0.1
0.8
51
Underlay sewing start length
2.0 - 10.0mm
0.1
4.0
52
Underlay sewing start pitch
0.2 - 2.0mm
0.1
1.0
53
Saw-shaped underlay bar tack X stitch no.
(Only for saw-shaped stitch with underlay)
2 - 14 stitches
2
4
54
Saw-shaped underlay bar tack Y stitch no.
(Only for saw-shaped stitch with underlay)
1 - 5 stitches
1
1
55
2-cycle sewing
0: No double stitch
1: Double stitch
2: Crossed double stitch
1
0
1-2
1
2
1:Double stitch
56
43
2:Crossed double stitch
No. of bar tacks sewn for 2-cycle sewing
Setting range
HE-800A
Unit
Default
5. OPERATION
No.
57
First offset for 2-cycle sewing
Setting items
0.0 - 0.8mm
Setting range
0.1
0.3
58
Zigzag underlay stitch width
0.0 - 3.0mm
0.1
0.0
59
60
61
62
63
Slow start stitches
Slow speed
Rear tack speed
Front tack speed
Sewing start tension apply timing
0 - 4 stitches
500 - 1,500rpm
500 - 4,000rpm
500 - 4,000rpm
-4 - 6 stitches
1
100
100
100
1
1
800
4,000
4,000
0
64
Rear bar tack tension release timing
-4 - 4 stitches
1
0
65
Rear bar tack tension apply timing
-4 - 4 stitches
1
0
66
Front bar tack tension release timing
-4 - 4 stitches
1
0
HE-800A
Unit
Default
44
5. OPERATION
No.
67
Sewing end tension apply timing
Setting items
-5 - 0 stitches
68
Rear tack width (rectangle only)
OFF: Condense stitch
0.1 - 1.5mm
(Normally set to 1.0)
OFF: Condense stitch
69
Setting range
0.1 - 1.5mm
Program copy
OFF,
1 – 90 (Specify copy source)
Unit
Default
1
0
0.1
OFF
1
OFF
5-5-1. Available sewing area
The available sewing area (C x D) is determined by a
combination of the work clamp size (A x B) and the
needle plate hole size. Set panel DIP switch B correctly
in accordance with the work clamp and needle plate
being used. (Refer to "13-1. Panel DIP switches".)
If DIP switch B is not set correctly, it will not be possible
to set the normal values for the parameter. In addition,
the needle and cutter may touch the work clamp and
needle breakages or damage to the cutter may result.
3921Q
Work clamp size
(A X B)
No.3
No.4
No.5
No.7
5.4 X 19.0
OFF
OFF
ON
N/A
DIP switch B setting
No.6=ON
No.6=OFF
(Needle plate hole size
(Needle plate hole size
No.8
5.4mm)
7.3mm)
Available sewing area (C x D)
N/A
4.0 X 15.0
4.0 X 15.0
5.4 X 24.5
∗
OFF
ON
4.0 X 20.0
4.0 X 20.0
5.4 X 36.0
∗
OFF
OFF
4.0 X 32.0
4.0 X 32.0
6.8 X 24.5
OFF
ON
ON
N/A
N/A
4.0 X 20.0
5.4 X 20.0
6.8 X 36.0
ON
OFF
OFF
N/A
N/A
4.0 X 32.0
5.4 X 32.0
ON
OFF
4.0 X 40.0
5.4 x 40.0
6.8 X 47.0
∗
7.3 X 24.5
ON
OFF
ON
N/A
N/A
4.0 X 20.0
6.0 X 20.0
7.3 X 36.0
ON
ON
OFF
N/A
N/A
4.0 X 32.0
6.0 X 32.0
ON
ON
4.0 X 40.0
6.0 X 40.0
7.3 X 47.0
∗
∗ ON, ON, ON or OFF, ON, OFF or OFF, OFF, OFF
45
HE-800A
5. OPERATION
5-5-2. Setting the knife length
Set parameter number 02 to the knife length that matches the cutter being used. (Refer to "5-4-2. Checking the length
of knife".)
Be sure to change the knife length setting if the knife is replaced with a knife of a different length.
The stitch length will be automatically determined by the value for the length of the knife which has been set. Therefore,
if the knife length is not set correctly, problems may occur, such as the bar tacking stitches being cut by the knife.
5-5-3. Buttonhole sewing size
A. Length of knife (Parameter No.02)
B. Zigzag width (Parameter No.05)
C. Knife X space (Parameter No.06)
D. Knife Y space (Parameter No.07)
E. Front tack length (Parameter No.21)
F. Rear tack length (Parameter No.31)
G. Zigzag stitch length (A + D + D) *
H. Bar tack width (B + B + C) *
I. Buttonhole length (A + D + D + E + F) *
* Set automatically.
3922Q
5-5-4. Main restrictions when setting parameters
When the sewing area is set to 4.0 x 32.0 (default setting)
Symptom
Parameter number 05
(Zigzag width) does not
become larger.
Cause
If the sewing area is 4.0 mm and parameter
number 06 (Knife X space) is set to 0.4 mm, the
zigzag width that can be entered will be limited
to (4.0 - 0.4) ÷ 2 = 1.8 mm.
Parameter number 06
(Knife X space) does
not become larger.
If the sewing area is 4.0 mm and parameter
number 05 (Zigzag width) is set to 1.8 mm, the
knife X space that can be entered will be limited
to 4.0 - (1.8 + 1.8) = 0.4 mm.
Parameter number 08
(Knife
X
position
alignment) does not
become
larger
or
smaller.
Parameter number 10
(Zigzag width ratio [at
left]) does not become
larger or smaller.
Parameter number 26
(Front tack sideways
correction)
and
parameter number 36
(Rear tack sideways
correction)
do
not
become
larger
or
smaller.
Remedy
A
4.0 mm
1.8 mm
1.8 mm
0.4 mm
3923Q
The buttonhole is aligned to the left or right of
the sewing area, so only values that are within
the available space inside the sewing area can
be entered.
In the example shown in the illustration, the
alignment can only be adjusted by up to 0.2 mm
to the plus side and the minus side.
See illustration.
A
4.0 mm
Spare
0.2mm
See illustration.
1.6 mm
Spare
0.2mm
1.6 mm
0.4mm
3924Q
HE-800A
46
5. OPERATION
Symptom
Parameter number 35
(Eyelet
buttonhole
radius)
does
not
become
larger
or
smaller.
Cause
If the sewing area is 4.0 mm and parameter
number 06 (Knife X space) is set to 0.4 mm and
parameter number 05 (Zigzag width) is set to
1.5 mm, the eyelet buttonhole radius that can
be entered will be a minimum of (1.5 + 1.5 +
0.4) ÷ 2 = 1.7 mm, and a maximum of 4.0 ÷ 2 =
2.0 mm.
Remedy
A
4.0 mm
1.5 mm
1.5 mm
0.4 mm
3925Q
Parameter number 02
(Length of knife) does
not become larger.
A
If the sewing area is 32.0 mm and parameter
number 07 (Knife Y space) is set to 1.0 mm,
parameter number 21 (Front tack length) is set
to 1.0 mm and parameter number 31 (Rear tack
length) is set to 1.0 mm, the knife length will be
32.0 - 1.0 - 1.0 - 1.0 - 1.0 = 28.0 mm. (The 32.0 mm
default setting is 27.8 mm to match the
positions of the needle and cutter.)
See illustration.
1.0 mm
Parameter number 21
(Front tack length) and
parameter number 31
(Rear tack length) do
not become larger.
See illustration.
1.0 mm
Parameter number 13
(Straight
bar
tack
length)
does
not
become smaller.
The initial setting for parameter number 13
(Straight bar tack length) is 13.0 mm, and for
parameter number 17 (Running length) it is
11.0 mm. At this time, the straight bar tack
length cannot be set to less than 11.0 mm.
Parameter number 07
(Knife Y space) does
not become larger.
1.0 mm
1.0 mm
3926Q
B
11.0 mm
13.0 mm
3927Q
<Remedy>
A. Change the work clamp over to a larger work clamp. Alternatively, change the needle plate to one with a larger hole.
Note: Be sure to change the setting for panel DIP switch B also.
B. Set parameter number 17 (Running length) to a smaller value and then set the straight bar tack length.
47
HE-800A
5. OPERATION
5-6. Rear tack vector shape programs
Parameter No. 37
2: Rectangle
1: Triangle
3928Q
3: Saw-shape
3929Q
3930Q
Setting range 1: Triangle
General sewing
Setting range 2: Rectangle
▪ This is effective for preventing the material from getting stuck in the needle hole when sewing the rear tack, which can
happen when using lightweight materials.
(An offset is used so that the stitches do not overlap when sewing the reverse zigzagging for the rear tack.)
▪ Reducing the number of front tack stitches is effective in preventing the material getting stuck at the front tack.
▪ Using a needle plate with a small needle hole (1.2) as well can also help in preventing the material from getting stuck.
Setting range 3: Saw-shape
This is effective for preventing dimples in the rear tack, without the need for underlay sewing.
* The number of stitches for the saw-shape type of sewing is set by means of parameter Nos. 38 and 39.
HE-800A
48
5. OPERATION
5-7. Underlay programs
Four types of underlay patterns are available. These four types can also be combined. Refer to the examples of use to
determine which type of underlay to use.
Parameter No.
45
46
Underlays sewn together
3931Q
47
Saw-shape underlays
3932Q
58
Rectangle underlays
3933Q
Zigzag underlay stitch
3934Q
Underlays sewn together
▪ This type of underlay pattern is used for resewing if the knife has operated before the seam has been formed, such
as when sewing is complete without the upper thread breaking even though the lower thread has run out. It is
particularly useful for sewing up the hole made by the knife beforehand at times when zigzag stitches do not hold
properly.
▪ The pile of fluffy fabrics is pressed down before sewing, so that the buttonhole finish looks more attractive.
Saw-shape underlays
▪ This type of underlay is useful for stretch materials to prevent them from stretching.
▪ It is useful for preventing dimples from forming during bar tacking. Radial-type buttonholes are useful for preventing
dimples.
▪ It is also useful for strengthening the buttonholes to stop the seam from unravelling, which can often happen with
materials with coarse weaves.
Rectangle underlays
▪ This type of underlay is useful for stretch materials to prevent them from stretching.
▪ This is effective in preventing seams from unravelling in materials which appear not to have a very coarse weave. It
also serves to reinforce the buttonhole.
▪ If the seam is hidden and the seam width seems small, you can sew 2 - 3 rectangle underlays to make the material
look more voluminous.
▪ Underlays such as (1) to (9) in the illustration can be sewn in slightly different positions by changing the setting value
for parameter No. 50 (underlay offset) so that the seam does not become too stiff and to further increase the feeling
of volume.
Zigzag underlay stitch
If parameter No. 58 (Zigzag underlay stitch width) is set after saw-shaped underlay stitches or rectangle underlay
stitches have been set, zigzag underlay stitches will only be sewn for the first cycle of saw-shaped underlay stitching
or rectangle underlay stitching.
▪ This is particularly effective in preventing seams from unravelling in materials which appear not to have a very
coarse weave. It also serves to reinforce the buttonhole.
▪ If parameter No. 58 (Zigzag underlay stitch width) [Dimension A in the illustration] is set to about 0.4 mm, the zigzag
underlay stitches will be even stronger than other underlay stitches.
Note:
▪ When sewing underlays, the number of bar tacking stitches will increase, so that thread breakages or broken
needles may occur. To avoid such problems, reduce the number of underlays or drop the sewing speed.
▪ When underlays above are sewn together, the order of sewing is underlays sewn together → saw-shape
underlays → rectangle underlays.
49
HE-800A
5. OPERATION
5-8. Cutter operation
The cutter operating pattern can be selected from the following four patterns.
Parameter No. 44
0
1
2
3
Operates when the front
tack of the last buttonhole
cycle is sewn.
Operates near the front
tack when sewing is
finished and material is
feeding.
Operates
immediately
before the left zigzag stitch
of the last cycle is sewn.
Operates
twice:
immediately before the left
zigzag stitch of the last
cycle is sewn and when the
front tack of the last cycle is
sewn.
3935Q
3936Q
3937Q
3938Q
Setting range 0:
General sewing
Setting range 1:
Because the needle and knife positions are separated
by 2.2 mm as shown in the illustration, the distance
between the edge of the front tack and the edge of the
buttonhole cannot be set to less than 2.2 mm.
For example, if the knife Y space (A) is set to 0.5 mm,
the front tack length (B) will not go below 1.7 mm. At
such times, the front tack length can be set to less than
1.7 mm when using cutting after sewing.
Once sewing is finished and material feeding has
finished, the cutter will operate.
Feeding
2.2 mm
3939Q
Setting range 2:
• Does not operate during the first sewing cycle. Only applies to second and subsequent cycles (during underlay sewing
and overlap sewing).
▪ This is used in cases such as when the rough edges of the material after cutting are hemmed by the buttonhole
stitches.
▪ The cutter operates before the left zigzag stitch of the last cycle is sewn.
Setting range 3:
• Does not operate during the first sewing cycle. Only applies to second and subsequent cycles (during underlay sewing
and overlap sewing).
▪ This is used in cases such as when the rough edges of the material after cutting are hemmed by the buttonhole
stitches.
▪ It can also be used if the rough edges of the material block the buttonhole after the left and right zigzag stitches have
been sewn.
• The cutter operates immediately before the left zigzag stitch of the last cycle is sewn, and it operates again when the
front tack of the last cycle is sewn.
HE-800A
50
5. OPERATION
5-9. Cycle program
Cycle program can contain up to a maximum of nineteen steps.
→ C1→ C2→ C3→……→ C9→ C0.→ C1.→……→ C9.
This section shows an example where C1 is set to program number 3 and C2 is set to program number 10.
Step
Program No.
C1
3
C2
10
3940Q
Cutter on
Cutter off
1. Press the SELECT key (1) to change the mode to
program mode.
2. While pressing the ENTER key (2), press the
program No. UP key (3). Repeat this operation
twice.
* "C1" will appear in the program number LED (4).
3. Press the parameter keys (5) and (6) to select the
program number 3.
* The program number 3 will appear in the
parameter display LED (7).
4. Use the CUTTER ON key (8) to set whether the
cutter is turned on or off.
* If "." appears in the display, the cutter is turned on,
and if "." does not appear, the cuter is turned off.
However, if the cutter on indicator (9) is switched
off during cycle sewing, the cutter operation will
always be off.
5. Press the ENTER key (2) to accept the program
number 3.
* The display will stop flashing and illuminate
steadily.
6. Press the program No. UP key (3).
* "C2" will appear in the program number LED (4).
The numbers "3." [the program number for C1]
and "0." will appear in the parameter display LED
(7).
7. Press the parameter keys (5) and (6) to select the
program number 10.
8. Use the CUTTER ON key (8) to set whether the
cutter is turned on or off.
9. Press the ENTER key (2) to accept the program
number 10.
* The display will stop flashing and illuminate
steadily.
10. Press the SELECT key (1) to change the mode to
automatic mode. "C1" will appear in the program
number LED (4).
Clearing the cycle program
Program number "0" signifies a clear status. If "0" is set, the setting details for all subsequent steps will be cleared.
If C1 is set to "0", the cycle program will be cleared.
51
HE-800A
5. OPERATION
5-10. Production counter
Check that panel DIP switch A - No.4 is at the OFF setting. (Refer to “13. CHANGING FUNCTIONS USING THE DIP
SWITCHES”.)
3941Q
1. Press the SELECT key (1) to change the mode to automatic mode.
2. Press the parameter keys (2) and (3) simultaneously.
* "PC" will flash in the program number LED (4), and the production counter value will appear in the parameter display
LED (5).
3. Press the parameter keys (2) and (3) to change the production counter setting.
* The production counter setting will flash while the setting is being changed.
If you would like to set the production counter to "0", press the RESET key (6).
4. Press the ENTER key (7). The production counter value will be accepted and the mode will return to automatic mode.
* If you press the SELECT key (1) while the production counter value is still flashing, the mode will return to automatic
mode without the production counter value being changed.
HE-800A
52
5. OPERATION
5-11. Bobbin thread counter
If you use the bobbin thread counter to set the number of articles which can be sewn with the amount of bobbin thread
available, you can stop the bobbin thread running out in the middle of sewing a pattern.
Check that panel DIP switch A - No.4 is at the ON setting. (Refer to “13. CHANGING FUNCTIONS USING THE DIP
SWITCHES”.)
3942Q
1. Press the SELECT key (1) to change the mode to
automatic mode.
2. Press the parameter keys (2) and (3)
simultaneously.
* "bC" will flash in the program number LED (4), and
the bobbin thread counter value will appear in the
parameter display LED (5).
3. Press the RESET key (6).
* The previously-set bobbin thread counter value will
appear in the parameter display LED (5).
4. Press the parameter keys (2) and (3) to change the
bobbin thread counter setting.
* The bobbin thread counter setting will flash while
the setting is being changed.
5. Press the ENTER key (7). The bobbin thread
counter value will be accepted and the mode will
return to automatic mode.
6. When the number of articles set by the bobbin thread counter have all been sewn, the previously-set bobbin thread
counter value will appear in the parameter display LED (5), and an alarm will start sounding continuously.
* The sewing machine will not operate during this time, even if the treadle is depressed.
7. Replace the bobbin, and then press the ENTER key (7).
* The alarm will stop sounding, the parameter display LED (5) will stop flashing and light steadily, and normal sewing
can then be carried out.
* If you press parameter keys (2) and (3) at this time, you can change the setting value for the bobbin thread counter.
Press the ENTER key (7) to accept the setting.
5-12. Using the program memos
Insert the program memos (1) into the rear of the
operation panel (2) for safekeeping.
Program memo contents
1) Easy reference guide
2) Error code table
3) Parameter table
4) Program notes
3943Q
53
HE-800A
Use a lead pencil to make any additions to the
parameter table and for writing anything into the
program notes. If you do so, additions can be removed
using an eraser and the space can be re-used.
The program notes are useful for recording what
patterns have been entered into which programs.
5. OPERATION
5-13. Adding patterns created using the programming software for
electronic pattern sewer
You can use the programming software for electronic pattern sewer to create your own sewing patterns.
Up to nine of the patterns which you create in this way can be programmed into a P-ROM.
DANGER
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.
3944Q
3945Q
1. Remove the six screws (1), and then open the cover (main P.C. board mounting plate (2)).
Note: When opening the cover, hold it securely so that it does not fall down.
2. Remove the P-ROM (3) from the main P.C. board.
3. Create the pattern(s) using the programming software for electronic pattern sewer. Refer to the Operating
Instructions for the programming software for electronic pattern sewer for details on how to create patterns.
4. Add the pattern(s) created to the P-ROM (3).
5. Install the P-ROM (3) to the main P.C. board so that it faces as shown in the illustration.
Note: If attached in reverse way, P-ROM may be damaged.
6. Close the cover (main P.C. board mounting plate (2)), and tighten the six screws (1).
The program numbers for patterns which have been created using the programming software for electronic pattern
sewer range from P1 to P9. However, program numbers which have not yet been assigned to a program will not appear
on the program number LED.
→ 1→ 2→ 3→……→ 90→ P1→ P2→……→ P9
You can check and change the following parameters for patterns which have been created using the programming
software for electronic pattern sewer.
No.
Setting items
00
02
Sewing speed (zigzag part)
Length of knife
08
09
16
48
60
61
62
Knife X position alignment
Knife Y position alignment
Running speed (Straight bar tack)
Underlay speed
Slow speed
Rear tack speed
Front tack speed
Setting range
1,000 - 4,000rpm
Value is for checking purposes
and cannot be changed.
-0.5 - 0.5mm
-0.8 - 0.8mm
1,000 - 3,000rpm
1,000 - 3,000rpm
500 - 1,500rpm
500 - 4,000rpm
500 - 4,000rpm
HE-800A
Unit
Default
100
-
3,600
-
0.1
0.1
100
100
100
100
100
0.0
0.0
2,000
2,000
800
4,000
4,000
54
6. CHECKING THE SEWING PATTERN
6. CHECKING THE SEWING PATTERN
You can check the sewing pattern which has been programmed, and also the needle zigzagging and feed operation.
Checking can be carried out using test feed mode, or by turning the machine pulley by hand in manual mode. These two
modes can also be combined in order to carry out checking.
6-1. Test feed mode
3946Q
3905Q
1. Press the SELECT key (1) to change the mode to automatic mode.
2. Press the program No. keys (2) and (3) to select the number for the program to be checked, and then press the
ENTER key (4).
* The program number LED (5) will stop flashing and light steadily.
3. Press the SELECT key (1) to change the mode to test feed mode.
* The number of stitches in the selected program will appear as "H***" in the parameter display LED (6).
4. Depress the treadle from the neutral position [A] to the 2nd step [C].
* The work clamp will be lowered, and the needle zigzag and feed mechanisms will move to the sewing start position.
5. Return the treadle to the neutral position [A], and then depress it once more to the 2nd step [C]. The needle zigzag
and feed mechanisms will each advance by one step while the treadle is being depressed.
* The needle zigzag and feed mechanisms will also advance by one step if you press the parameter UP key (7). The
needle zigzag and feed mechanisms will also retreat by one step if you press the parameter DOWN key (8).
* If the knife has been set to operate, the buzzer will sound and "C-On" will appear in the parameter display LED (6).
6. The machine will stop at the final stitch position, and "H o" will appear in the parameter display LED (6).
7. Return the treadle to the neutral position [A], and then depress it to the 2nd step [C]. The sewing machine will move to
the home position, and the work clamp will rise.
8. Press the SELECT key (1) to change the mode to automatic mode.
▪ If you press the SELECT key (1) during the checking operation, the mode will change to manual mode. If you
press the SELECT key (1) once more, the mode will change back to test feed mode.
▪ If you would like to stop checking before the operation has completed, press the RESET key (9). The sewing
machine will move to the home position, and the work clamp will move to the neutral position.
55
HE-800A
6. CHECKING THE SEWING PATTERN
6-2. Manual mode
3947Q
3905Q
1. Press the SELECT key (1) to change the mode to automatic mode.
2. Press the program No. keys (2) and (3) to select the number for the program to be checked, and then press the
ENTER key (4).
* The program number LED (5) will stop flashing and light steadily.
3. Press the SELECT key (1) to change the mode to manual mode.
* The number of stitches in the selected program will appear as "H***" in the parameter display LED (6).
4. Depress the treadle from the neutral position [A] to the 2nd step [C].
* The work clamp will be lowered, and the needle zigzag and feed mechanisms will move to the sewing start position.
5. Turn the machine pulley by hand. The needle zigzag and feed mechanisms will each advance by one step each time
the machine pulley is turned.
* If the knife has been set to operate, the buzzer will sound and "C-On" will appear in the parameter display LED (6).
6. Stop turning the machine pulley when "H o" appears in the parameter display LED (6) and the pulley is at the needle
up stop position.
7. When the treadle is depressed once more to the 2nd step [C], the sewing machine will move to the home position,
and the work clamp will rise.
8. Press the SELECT key (1) to change the mode to automatic mode.
▪ If you turn the machine pulley to the needle up stop position and press the SELECT key (1) during the checking
operation, the mode will change to test feed mode.
▪ If you would like to stop checking before the operation has completed, press the RESET key (7). The sewing
machine will move to the home position, and the work clamp will move to the neutral position.
HE-800A
56
7. CORRECT USE
7. CORRECT USE
CAUTION
Turn off the power switch before installing the needle, otherwise the machine may operate if the treadle is
depressed by mistake, which could result in injury.
7-1. Installing the needle
Use a Schmetz Nm 134 needle.
1. Loosen the set screw (1).
2. Insert the needle as far as it will go so that the
groove is facing toward pulley.
3. Securely tighten the set screw (1).
[At the time of shipment]
Spec.
-2
Needle
134 Nm90
3948Q
57
HE-800A
-3
134 Nm75
7. CORRECT USE
7-2. Threading the upper thread
CAUTION
Turn off the power switch before threading the thread, otherwise the machine may operate if the treadle is
depressed by mistake, which could result in injury.
For spun thread and
cotton thread
3949Q
For polyester thread
3950Q
Thread the upper thread correctly as shown in the illustration.
▪ When pulling the thread out from the zigzag thread tension (1), move the tension release lever (2) in the direction of
the arrow to open the tension discs (3) in order to make it easier to pull out the thread.
▪ After threading the arm thread guide (4), pass the thread under the thread guide (5) as shown in the illustration to
make it easier to thread.
▪ Push the needle bar to the right to make it easier to pass the thread through the needle.
Note:
▪ If you start sewing without passing the thread through the thread guide (5), error “E-01” will be generated and the
sewing machine will stop.
▪ The thread tension (6) is used to prevent the upper thread from becoming knotted, tangled or loose, so do not
touch it. It is tightened only gently. If it is tightened too firmly, the knob may become dam-aged.
3951Q
HE-800A
Threading the thread at the sewing start position
1. Turn on the power and set the sewing machine to
the home position.
2. Press the RESET key (7).
* The work clamp will be lowered, and ”¯AdJ” will be
appear in the parameter display LED (8). The
sewing machine will not operate during this time,
even if the treadle is depressed.
3. Press the parameter UP key (9).
* The needle bar will move to the right to make
threading easier.
4. Press the RESET key (7).
* The needle bar will move to the center position and
the work clamp will rise.
58
7. CORRECT USE
7-3. 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.
3952Q
3953Q
3954Q
1. Place the bobbin onto the bobbin winder shaft (1).
2. Thread the thread as shown in the illustration, wind the thread around the bobbin several times, and then press the
bobbin presser (2).
3. Turn on the power switch.
4. Depress the treadle to set the machine to the home position.
5. While pressing the ENTER key (3), depress the treadle until the machine starts operating, and then release the
ENTER key (3).
* Only the upper shaft and lower shaft will then operate; the needle zigzag and feed mechanisms and the work clamp
will not operate.
6. When the lower thread has finished winding, return the treadle to the neutral position.
7. Remove the bobbin, hook the thread onto the knife (4), and then pull the bobbin in the direction of the arrow to cut the
thread.
3955Q
If the thread winds onto the bobbin unevenly
Loosen the set screw (6) and move the bobbin wider
tension bracket (7) up and down to adjust.
* For case A, move the bobbin winder tension bracket
down, and for case B, move it upward.
Case A
3956Q
59
Adjusting the bobbin winding amount
Loosen the screw (5) and adjust the bobbin presser
(2).
Case B
HE-800A
7. CORRECT USE
7-4. Threading the bobbin case
CAUTION
Turn off the power switch before removing or inserting the bobbin case, otherwise the machine may operate if
the treadle is depressed by mistake, which could result in injury.
Purl stitch
(seal stitch)
Whip stitch
(plain stitch)
2812Q
1. Insert the bobbin into the bobbin case as shown in the illustration.
Note: If the bobbin is inserted back to front, the bobbin will spin freely and the work clamp pulse motor will get out of
step.
2. Pass the thread though the slot (1) and then under the tension spring (2) and through the slot (3).
3. When sewing whip stitches, pull approximately 40 mm of thread out from the thread hole (4), and when sewing purl
stitches, pull approximately 40 mm of thread out from thread hole (5).
HE-800A
60
7. CORRECT USE
7-5. Thread tension
The shapes of the seams for all patterns which have been stored in programs 1 to 90 can be set using parameter No. 11.
Make the following adjustments in accordance with the seam shape which has been set.
[Stitch patterns]
Whip stitch (plain stitch)
Front
Purl stitch (seal stitch)
Back
Front
Back
1228Q
1229Q
Whip stitch (plain stitch)
The above stitch pattern in which the upper thread moves over the top and the bottom thread moves over the bottom of
the material in a zigzag pattern is called a “whip” stitch. This pattern is identical to the zigzag pattern of a lock stitch
zigzag machine.
Purl stitch (seal stitch)
The above pattern in which the upper needle thread tension is high and the upper needle follows a straight line through
the seam center while the lower thread moves left to right and intertwines with the upper thread is called a “purl” stitch.
[Reference thread tension]
Stitch patterns
Upper thread
Lower thread
Upper thread tension (N)
Lower thread tension (N)
Thread take-up spring tension (mm)
Thread take-up spring height (N)
Whip stitch
Polyester #50
Spun #60
Polyester #50
Spun #60
0.3 - 0.7
0.50 - 0.85
0.15 - 0.25
Purl stitch
Polyester #50
Spun #60
Polyester #50
Spun #60
0.75 - 2.00
1.0 - 2.2
0.05 - 0.15
4-6
0.1 - 0.2
7-5-1. Lower thread tension
Whip stitch (plain stitch)
Adjust by turning the adjusting screw (1) until the
bobbin case drops when it is shaken slightly (0.15 0.25 N) while the thread end coming out of the bobbin
case is held.
Becomes
weaker
Becomes
stronger
Purl stitch (seal stitch)
Adjust by turning the adjusting screw (1) until the
bobbin case drops gently by its own weight (0.05 - 0.15
N) while the thread end coming out of the bobbin case
is held.
2813Q
61
HE-800A
7. CORRECT USE
7-5-2. Upper thread tension
Zigzag stitch
Bar tacking stitch
1280Q
3957Q
Whip stitch (plain stitch)
Turn the tack tension control (1) to adjust the thread tension so that a clean whip stitch is obtained at the bar tacking
areas and the zigzag areas. There is no need to loosen the zigzag tension control (2) at this time.
* Bar tacking stitches and zigzag stitches are sewn at the tension which is set by the tack tension control (1), so that
zigzag tension is automatically disabled. If the zigzag tension control (2) is loosened, the upper thread trailing length
after upper thread trimming may become longer.
Purl stitch (seal stitch)
1. Turn the tack tension control (1) to adjust the thread tension so that a clean whip stitch is obtained at the bar tacking
areas.
2. Turn the zigzag tension control (2) while watching the looping of the zigzag stitch.
2151Q
Upper thread tension for whip stitches
(with zigzag tension open)
When using a program that has whip stitches set,
press the RESET key to lower the work clamp, and
then take the measurement shown in the illustration.
Upper thread tension for purl stitches
(with zigzag tension closed)
When using a program that has purl stitches set, press
the RESET key to lower the work clamp, and then take
the measurement shown in the illustration.
2152Q
HE-800A
62
7. CORRECT USE
7-5-3. Thread take-up spring height
Loosen the set screw (1), and turn the entire thread
tension adjuster to adjust the thread take-up spring
height to between 4 - 6 mm in accordance with the
material to be sewn.
3958Q
7-5-4. Thread take-up spring tension
Turn the thread tension stud (1) to adjust the thread
take-up spring tension to between approximately 0.1 0.2 N in accordance with the material to be sewn.
Weaker
Stronger
3959Q
7-5-5. Adjusting arm thread guide
Index mark
0.5mm
3960Q
63
HE-800A
The standard position of arm thread guide (1) is when
the screw (2) is aligned with the index mark.
The standard position for the arm thread guide (3) is
when the clearance between it and the screw (4) is 0.5
mm as shown in the illustration.
8. SEWING
8. SEWING
CAUTION
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.
▪ When threading the needle
▪ When replacing the bobbin and needle
▪ When not using the machine and when leaving the machine unattended
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.
When holding the material, place your right hand at the back and your left hand at the front.
If your left hand is toward the back, it may get caught in the feed arm when it operates or it might touch
the moving parts of the needle trimmer and injury may result.
Do not touch the motor cover during operation and for one hour after operation has finished, otherwise
burns may result.
Note:
▪ The feed arm can move, so be careful of the
clearance.
▪ When using the machine, check that the oil is visible
through the oil cap. If it cannot be seen, stop the
machine and eliminate the cause of the problem.
2153Q
8-1. Sewing
3961Q
1. Turn on the power.
2. Depress the treadle to the 2nd step [C]. (Refer to “52. Home position detection (preparation)”.)
3. Press the SELECT key (1) to change the mode to
automatic mode.
4. Press the program No. keys (2) and (3) to select the
number for the program to be sewn.
5. Press the ENTER key (4).
6. Set the material in place, and then depress the
treadle from [A] to the 1st step [B]. The work clamp
will be lowered.
7. Depress the treadle from the 1st step [B] to the 2nd
step [C]. The sewing machine will start sewing.
* Once the sewing operation has completed normally,
the production counter will increase by 1 if in
production counter display mode (DIP switch A - No.
4 = OFF). If in lower thread counter mode (DIP
switch A – No. 4 = ON), the lower thread counter will
decrease by 1.
* When the number of articles set by the bobbin thread
counter have all been sewn, an alarm will start
sounding continuously. The sewing machine will not
operate during this time, even if the treadle is
depressed. Press the ENTER key (4) to cancel the
alarm. (Refer to “5-11. Bobbin thread counter”.)
3962Q
HE-800A
64
8. SEWING
8-2. If the stop switch is pressed during sewing
When the stop switch (1) is pressed, the sewing machine will stop and "E-00" will appear in the parameter display LED
(2).
3963Q
3964Q
To finish sewing in this condition [Next sewing]
1. Press the RESET key (3). The needle zigzag and feed mechanisms will return to the sewing start position, and the
work clamp will rise.
2. Sewing will start again when the treadle is depressed.
To start sewing again from slightly before or after the stop point [Resuming sewing]
1. Press the parameter UP key (4) to move the zigzag and feed mechanisms to the next sewing position.
Press the parameter DOWN key (5) to move the zigzag and feed mechanisms to the previous sewing position.
* The "E-00" display will be cleared at this time.
2. Move to the position to continue sewing from, and then depress the treadle. The rest of the sewing will be carried out.
To sew from the sewing start point without raising the work clamp (without shifting the material)
[Re-sewing]
1. While pressing the parameter DOWN key (5), press the RESET key (3).
* The needle zigzag and feed mechanisms will return to the sewing start position, but the work clamp will not rise.
2. Depress the treadle to start sewing.
* If sewing is paused while it is in progress, the needle will move to the right side and stop, so that it will be easier to
thread the thread.
* If panel DIP switch A - No. 3 is set to ON, you can stop the sewing machine by depressing the treadle backward in the
same way as if the stop switch (1) is pressed.
Note:
▪ Depressing the treadle backward to stop the sewing machine only works when the machine is starting, and the
work clamp can be raised while the sewing machine is stopped.
▪ Always turn off the power before changing any of the DIP switch settings. Any changes to the DIP switch positions
will not be effective until the power is switched off and back on again.
65
HE-800A
8. SEWING
8-3. If the thread breaks during sewing
When the thread breakage detector operates, the sewing machine will stop and "E-01" will appear in the parameter
display LED (1).
Re-thread the thread.
3965Q
To finish sewing in this condition [Next sewing]
1. Press the RESET key (2). The needle zigzag and feed mechanisms will return to the sewing start position, and the
work clamp will rise.
2. Sewing will start again when the treadle is depressed.
To start sewing again from slightly before or after the thread breakage [Resuming sewing]
1. Press the parameter UP key (3) to move the zigzag and feed mechanisms to the next sewing position.
Press the parameter DOWN key (4) to move the zigzag and feed mechanisms to the previous sewing position.
* The "E-01" display will be cleared at this time.
2. Move to the position to continue sewing from, and then depress the treadle. The rest of the sewing will be carried out.
To sew from the sewing start point without raising the work clamp (without shifting the material)
[Re-sewing]
1. While pressing the parameter DOWN key (4), press the RESET key (2).
* The needle zigzag and feed mechanisms will return to the sewing start position, but the work clamp will not rise.
2. Depress the treadle to start sewing.
* If the thread breakage detector operates during sewing, the needle will move to the right before the sewing machine
stops, in order to make threading easier.
An alarm will sound while the error is being displayed, but if circuit board DIP switch 1 - No. 7 is set to ON,
you can set the alarm to sound only three times. (Refer to “13. CHANGING FUNCTIONS USING THE DIP
SWITCHES”.)
HE-800A
66
8. SEWING
8-4. Thread breakage before sewing is finished
If the thread breaks just before sewing is complete, and then sewing is completed without the thread breakage being
detected, the following operations are possible.
Note: This is enabled when panel DIP switch A - No. 1 is set to ON.
Even if sewing is complete, leave the work clamp lowered and check the sewing. Then depress the treadle
backward to trim the thread and raise the work clamp.
3966Q
To finish sewing in this condition [Finish]
1. Press the RESET key (1). The needle zigzag and feed mechanisms will return to the sewing start position, and the
work clamp will rise.
2. Sewing will start again when the treadle is depressed.
To start sewing again from slightly before or after the thread breakage [Resuming sewing]
1. Press the parameter DOWN key (2) to move the zigzag and feed mechanisms to the position to continue sewing
from.
2. If you do not want the cutter to operate, press the CUTTER ON key (3) to disable cutter operation.
3. Depress the treadle. The rest of the sewing will be carried out.
4. After sewing is complete, depress the treadle backward.
* The thread will be trimmed and the work clamp will be raised.
5. Before carrying out the next sewing operation, press the CUTTER ON key (3) to enable cutter operation.
To sew from the sewing start point without raising the work clamp (without shifting the material)
[Re-sewing]
1. While pressing the parameter DOWN key (2), press the RESET key (1).
* The needle zigzag and feed mechanisms will return to the sewing start position, but the work clamp will not rise.
2. If you do not want the cutter to operate, press the CUTTER ON key (3) to disable cutter operation.
3. Depress the treadle to start sewing.
4. After sewing is complete, depress the treadle backward.
* The thread will be trimmed and the work clamp will be raised.
5. Before carrying out the next sewing operation, press the CUTTER ON key (3) to enable cutter operation.
To sew from the sewing start point without raising the work clamp in the other program (without shifting the
material) [Re-sewing in the other program]
The other program number can be retrieved when re-sewing. (For example, if there is a program which has already
been assigned to a different program number which has the same buttonhole shape and which has underlays sewn
together as an added function, then you can retrieve that program.)
1. Press the Program No. keys (4) or (5) to select the program, and then press the ENTER key (6).
2. If you do not want the cutter to operate, press the CUTTER ON key (3) to disable cutter operation.
3. Depress the treadle to start sewing.
4. After sewing is complete, depress the treadle backward.
* The thread will be trimmed and the work clamp will be raised.
5. Before carrying out the next sewing operation, press the CUTTER ON key (3) to enable cutter operation.
6. Return the program number to the previous number.
67
HE-800A
8. SEWING
8-5. When resuming sewing in test feed mode or manual mode
If the thread breaks during sewing and sewing finishes without the broke thread being detected, you can operate the
sewing machine in test feed mode or manual mode until the needle zigzagging and material feed reach the point where
sewing was interrupted, and then complete the rest of the sewing.
3967Q
1. Press the SELECT key (1) to change the mode to test feed or manual mode.
2. Move the needle zigzag and feed mechanisms to the point to resume sewing using the operations that apply to
whichever mode being used. (Refer to "6-1. Test feed mode" or "6-2. Manual mode".)
3. Raise the needle bar to its highest position.
Note: If the needle bar is not at its highest position when the next step is carried out, error "E-02" will be displayed.
Turn the machine pulley to raise the needle bar to its highest position before continuing.
4. While pressing the ENTER key (2), press the SELECT key (1).
* The mode will change to automatic mode and "E-00" will be displayed.
Note: When step 4. is carried out, the mode cannot be returned to test feed mode or manual mode.
5. Press the parameter UP key (3) or the parameter DOWN key (4).
* The "E-00" display will be cleared.
6. Depress the treadle to start sewing from the current position.
HE-800A
68
9. CLEANING AND MAINTENANCE
9. CLEANING AND MAINTENANCE
CAUTION
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.
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.
9-1. Cleaning
Remove lint and dust from the thread passages.
3968Q
Remove lint and dust from around the work clamp and
scissors.
2158Q
Remove the bobbin case, and remove dust and lint
from around the shuttle and fixed knife.
Also wipe the bobbin to remove oil.
* Periodically clean around the bobbin thread trimmer
underneath the needle plate to remove any dust and
thread scraps. If you continue using the sewing
machine while dust or thread scraps have built up, it
may cause the work clamp lifter pulse motor to go
out of step.
2159Q
69
HE-800A
9. CLEANING AND MAINTENANCE
9-2. Draining the oil
Bed base
1. Remove the belt cover, and then gently tilt back the
machine head.
2. Place the oil tank (1) against the underside of the
table, and then remove the screw (2).
3. After the lubricating oil has been drained, make sure
that the O-ring (3) is in the correct position, and then
tighten the screw (2).
3969Q
9-3. Cleaning the control box air inlet port
Use a vacuum cleaner to clean the filter in the air inlet
port (2) of the control box (1) at least once a month.
* If the machine is used while the air inlet port is
blocked, the inside of the control box will overheat.
When this happens, the overheating error code (“E40”) will be displayed and you will not be able to
operate the sewing machine.
3970Q
9-4. Cleaning the eye guard
Wipe the eye guard clean with a soft cloth.
Note:
Do not use solvents such as kerosene or thinner
to clean the eye guard.
2162Q
HE-800A
70
9. CLEANING AND MAINTENANCE
9-5. Checking the needle
Always check that the tip of the needle is not broken
and also the needle is not bent before starting sewing.
2163Q
9-6. Cleaning the length feed plate
Clean the length feed plate (1) if foreign materials such
as shavings start getting onto the material.
1. Loosen the two bolts (2), and then remove the
length feed plate (1).
2. Clean the underside of the length feed plate (1) and
the needle plate (3).
3971Q
71
HE-800A
10. STANDARD ADJUSTMENTS
10. STANDARD ADJUSTMENTS
CAUTION
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
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 the power switch needs to be left on when
carrying out some adjustment, be extremely
careful to observe all safety precautions.
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.
Note:
• The pulse motor may become hot. Be careful not to touch it when tilting back the machine head.
• The feed pulse motor cooling fan spins while the machine power supply is turned on. Be careful of this when
tilting back the machine head.
• Take care when handling the knife.
Turn on the power, and after the sewing machine returns to the home position, press the RESET key before carrying out
the following adjustments.
* The work clamp will lowered and " ¯ AdJ " will appear in the parameter display LED. The sewing machine will not
operate when the treadle is depressed at this time.
“10-1. Adjusting the needle bar height”
“10-2. Adjusting the needle and hook timing”
“10-3. Adjusting the clearance between needle and hook point”
“10-7-2. Adjusting the upper thread scissors opening timing”
“10-9. Adjusting the bobbin presser”
Turn off the power supply before carrying out all but the above tasks.
10-1. Adjusting the needle bar height
1. Set the sewing machine to the home position and
then press the RESET key.
2. Set the needle bar (1) to its lowest position.
3. Remove the rubber cap (2) from the face plate, and
then loosen the set screw (3) of the needle bar clamp.
4. Insert the “1” part of the gauge (4) between the needle
plate (5) and the lower edge of the needle bar (1), and
touch the needle bar against the gauge.
5. Tighten the set screw (3).
6. Install the rubber cap (2).
* Different gauges are used for each of the two
specifications -2 and -3, so make sure that the gauge
being used matches the specifications and application
for the sewing machine being adjusted.
3972Q
HE-800A
72
10. STANDARD ADJUSTMENTS
10-2. Adjusting the needle and hook timing
3974Q
Mark
2168Q
3973Q
Lowest
position
2837Q
1. Set the sewing machine to the home position and then press the RESET key.
2. Loosen the two screws (2) of the rotary hook joint (1).
3. Turn the pulley in the regular direction of rotation (toward the front) so that the needle bar (3) just begins to rise from
its lowest position.
4. Insert the “2” part of the gauge (4) between the needle plate (5) and the lower edge of the needle bar (3), and then
align the rotary hook point (6) with the center of the needle when the needle bar contacts the gauge.
* Different gauges are used for each of the two specifications -2 and -3, so make sure that the gauge being used matches the
specifications and application for the sewing machine being adjusted.
Note:
When installing the rotary hook joint, install using
the set screw so that the oil inlets in the rotary
hook and rotary hook joint (7) are aligned.
3975Q
10-3. Adjusting the clearance between needle and hook point
0.01 - 0.08 mm
2839Q
3976Q
1. Set the sewing machine to the home position and then press the RESET key.
2. Loosen the screws (3) and move the rotary hook (4) forward or back until there is a clearance of 0.01 to 0.08 mm between
the needle (1) and the hook point (2).
73
HE-800A
10. STANDARD ADJUSTMENTS
10-4. Adjusting the inner rotary hook and rotary hook holder overlap
Loosen the two screws (3) to adjust so that the tip of
the rotary hook holder (1) does not protrude past the
edge A of the inner rotary hook (2).
3977Q
10-5. Adjusting the work clamp pressure
The standard distance A is 30 mm (approximately 30
N).
Loosen the nut (1) and turn the adjusting screw (2) to
adjust the work clamp pressure.
3978Q
10-6. Adjusting the cutter installation
Lowest
position
Top of needle plate
1.5 – 2.0 mm
Lowest
position
Top of needle plate
3979Q
1. Install the cutter with the screw (1) so that the tip A
of the cutter blade is aligned with the top of the
needle plate when the cutter is pressed down by
hand to its lowest position.
* If using the flat cutter (2), install with the screw (1)
so that there is a clearance of 1.5 - 2.0 mm
between the cutter and the top of the needle plate.
Note:
࡮When the cutter is driven by the solenoid, the
movement will be approximately 2 mm greater
than that shown in the illustration.
࡮If the cutter does not cut properly, the cutter
may get stuck in the material and not return. If
this happens, replace or sharpen the cutter.
A special needle plate which helps to prevent
the cutter from getting stuck and which helps
maintain the cutting edge is available as an
option. (Refer to “3. OPTIONAL PARTS”.)
2. Loosen the two screws (4), and move the cutter
holder (5) to adjust so that the clearance between
the cutter and the needle bar (3) is 0.3 mm.
* Check that the needle bar (3) does not touch the
cutter when it moves sideways.
0.3 mm
3980Q
HE-800A
74
10. STANDARD ADJUSTMENTS
10-7. Adjusting the upper thread trimming
The standard distance (A) between the upper thread
scissors (1) and the center of the needle is 5.5 to 6.0 mm
when the work clamp is lowered by pressing the RESET
key after setting the machine to the home position.
5.5 – 6.0 mm
Center of the needle
3981Q
10-7-1. Adjusting the installation height of the upper thread scissors
3982Q
3983Q
Loosen the screw (1), and then move the upper thread scissors (2) up or down to adjust the clearance between the
upper thread scissors (2) and the work clamp (3) to approximately 1 mm.
Note:
The work clamp (3) will tilt when sewing joints, so adjust so that the upper thread scissors (2) do not touch it. If the
upper thread scissors (2) touch the work clamp (3), the work clamp lifter pulse motor may get out of step.
* If the tilting of the work clamp (3) causes skipped stitches to occur when sewing material joints, use the accessory
auxiliary sheet (4) as shown in the illustration.
75
HE-800A
10. STANDARD ADJUSTMENTS
10-7-2. Adjusting the upper thread scissors opening timing
After setting the sewing machine to the home position, press the RESET key and then make the adjustment.
3984Q
3985Q
Start touching at 1.5 – 2.5 mm
0.5 mm
0.5 mm
0.5 mm
Approx. 2 mm
Feed arm
Approx.
1.0 – 1.5 mm
0.5 mm
3986Q
3987Q
Gradual opening timing adjustment
1. Loosen the two bolts (3), and then adjust so that the distance (b) between ridge line (B) on the opening cam (1) and
the upper thread scissors (2) is 0.5 mm, and so that ridge line (B) on the opening cam is parallel to the feed direction.
2. Loosen the two screws (4), and then adjust so that the distance (c) between the rising section (C) of the upper thread
scissors (2) and the tip of the opening cam (1) is approximately 0.5 mm when the upper thread scissors (2) are
closed.
* If you would like the scissors to start opening earlier, make the distance smaller. However, if you make the distance
smaller, check that the rising section (C) of the upper thread scissors (2) does not touch the opening cam (1) and
prevent the upper thread scissors (2) from opening when the work clamp is lowered.
3. Apply grease to the inclined face (D) of the opening cam (1).
Scissors fully opening timing adjustment
1. Loosen the two bolts (7), and then adjust the support plate (8) so that the back plate (5) and the cam (6) overlap by
approximately 1.0 – 1.5 mm.
Note: If the amount of overlap is too small, the upper thread scissors will not open properly and the upper thread
scissors and the cutter may touch each other.
2. Loosen the two bolts (9), and then adjust the clearance between the bend in the back plate (5) and the cam (6) to
approximately 2 mm.
* If you would like the scissors to start opening earlier, make this clearance smaller.
3. Check that the upper thread scissors (2) open smoothly during feeding.
Note: If the upper thread scissors (2) do not open smoothly, the upper thread scissors (2) may touch the cutter and
needle breakage may occur.
HE-800A
76
10. STANDARD ADJUSTMENTS
10-8. Adjusting the lower thread clamp timing
Becomes
faster
When reference line A on feed guide shaft B (1) is
aligned with the edge of the feed arm support (2), the
opening plate (3) will start moving when the feed
mechanism moves 6 - 7 mm from the home position,
and the lower thread retainer (4) will open.
To change the opening timing, loosen the screw (5) of
the feed arm support (2) and move feed guide shaft B
(1) to the left or right.
Becomes
slower
3988Q
10-9. Adjusting the bobbin presser
1. Set the sewing machine to the home position and
then press the RESET key.
2. Loosen the set screw (1), and then adjust so that the
bobbin presser (2) goes into the hole in the bobbin
case (3).
3. Check that the work clamp is at the home position,
and then loosen the nut (4) and turn the screw (5) to
adjust the clearance A between the bobbin presser
(2) and the edge of the bed to approximately 12.5
mm.
3989Q
10-10. Adjusting the needle up stop position
3990Q
77
HE-800A
The needle up stop position is adjusted so that the
index mark (2) on the machine pulley (1) is inside the
mark (4) on the belt cover (3).
If adjustment is necessary, loosen the screw (5) of the
machine pulley (1). The machine pulley (1) will stop
more slowly if the screw (5) is moved counter to the
normal direction of rotation, and will stop more quickly
if the screw (5) is moved in the normal direction of
rotation.
Note:
The screw (6) at the “D” mark is an adjusting screw
for the needle down detection function and is
adjusted to match the feed timing, so it should not be
loosened.
* If the index mark (2) is not inside the mark (4) when
the sewing machine is started, and error code “E-02”
will be displayed. Turn the machine pulley to move
the index mark (2) to the correct position and then
start the sewing machine.
11. CHANGING FUNCTIONS USING THE MEMORY SWITCHES
11. CHANGING FUNCTIONS USING THE MEMORY SWITCHES
• The memory switch settings are valid for all programs (program Nos. 1 to 90).
• When a memory switch number is being displayed in the program number LED, a dot will appear after the memory
switch number. (Example: 00.)
3991Q
1. Press the SELECT key (1) to change the mode to program mode.
2. While pressing the ENTER key (2), press the program NO. UP key (3).
* The memory switch number "00." will appear in the program number LED (4), and the setting for that memory switch
number will appear in the parameter display LED (5).
3. Press the program NO. keys (3) and (6) to select the number for the memory switch to be changed.
4. Press the parameter keys (7) and (8) to change the memory switch setting.
* The memory switch setting will flash while it is being changed.
5. Press the ENTER key (2) to accept the new setting.
* The memory switch setting will stop flashing and illuminate steadily.
6. Press the SELECT key (1) to change the mode to automatic mode.
HE-800A
78
11. CHANGING FUNCTIONS USING THE MEMORY SWITCHES
11-1. Memory switch table
The memory switch settings are effective for all programs.
No.
00.
Setting items
Cutter power
02.
03.
04.
Work clamp lifting speed
Work clamp lowering speed
Work clamp height when treadle is
depressed backward
Work clamp height at neutral
position
Soft press height
Threshold value correction when
work clamp is lifted
Threshold value correction when
work clamp is lowered
Threshold value correction at start
Extension time for continuous
sewing
Home position return cycle
Feed timing
05.
06.
07.
08.
09.
10.
11.
12.
13.
Cutter dimension display during
automatic mode
14.
Program number changing enabled
when program lock is set
15.
Preventing the zigzag speed from
being changed
Setting range
-1: Light
0: Light - Normal
1: Normal
2: Normal - Medium
3: Medium
4: Heavy
-4 - 4
-4 - 4
1 - 13mm
1 - 13mm
OFF, 0.1 - 8.0mm
-10 - 10
-10 - 10
-10 - 10
OFF, 100 - 1,000ms
OFF, 1 - 10
-10 – 10 ( x 0.24q)
ON: Cutter dimensions are displayed.
OFF: Production counter or bobbin
thread counter is displayed.
ON: Program numbers can be
changed and the programmer
can be started.
OFF: Program numbers cannot be
changed and the programmer
cannot be started.
ON: Changes are prevented
OFF: Changes are allowed
Unit
Default
1
1
1
1
1
0
0
13
1
10
0.1
1
OFF
0
1
0
1
100
0
OFF
1
1
1
0
-
OFF
-
OFF
-
OFF
Memory switch No. 07. 08. 09.
Neutral position
Work clamp lowered ON position
No. 08.
Machine start ON position
No. 09.
Work clamp raised
ON position
No. 07.
2188Q
79
HE-800A
12. PROGRAM INITIALIZATION
12. PROGRAM INITIALIZATION
3992Q
12-1. Initializing all programs
1. While pressing the RESET key (1), turn on the power switch.
* While initializing all programs, all LEDs on the operation panel will illuminate and the buzzer will sound continuously
for 8 seconds.
2. Once all programs have been initialized, “- -“ will appear in the program number LED (2), and “- - - -“ will appear in the
parameter display LED (3).
Settings which are initialized
࡮Parameters
࡮Memory switches
࡮Production counter and lower thread counter
* If any cycle programs have been set, they will also be cleared.
3. Set the feed mechanism to the home position. (Refer to “5-2. Home position detection (preparation)”.)
12-2. Initializing a single program
1. Select the number of the program to be initialized, and then turn off the power.
2. While pressing the CUTTER ON key (4), turn on the power switch.
* The number of the program that will be initialized will appear in the program number LED (2), and then all other
LEDs will illuminate and the buzzer will sound four times.
3. When all parameters of the selected program have been initialized, “- -” will appear in the program number LED (2),
and “- - - -“ will appear in the parameter display LED (3).
Settings which are initialized
࡮Parameters
4. Set the feed mechanism to the home position. (Refer to “5-2. Home position detection (preparation)”.)
HE-800A
80
13. CHANGING FUNCTIONS USING THE DIP SWITCHES
13. CHANGING FUNCTIONS USING THE DIP SWITCHES
13-1. Panel DIP switches
Always turn off the power supply before changing any of the DIP switch settings.
Any changes to the DIP switch positions will not be effective until the power is switched off and back on again.
3993Q
Note:
Move the switches properly.
DIP switch A
No.
1
2
ON/OFF
ON
OFF
ON
OFF
ON
3
OFF
4
5
6
7
8
81
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Setting items
Work clamp remains lowered after sewing is complete (rises when treadle is
depressed backward)
Work clamp rises after sewing is complete
Pausing enabled during automatic sewing when the treadle is depressed
backward
Pausing disabled during automatic sewing when the treadle is depressed
backward
Display setting during automatic mode = bobbin thread counter (Default: 100)
Display setting during automatic mode = production counter (Default: 0)
2-cycle sewing ON (All programs will be set to 2-cycle sewing regardless of the
setting for parameter No. 55.)
2-cycle sewing OFF
Upper thread breakage detection disabled
Upper thread breakage detection enabled
Programs disabled
Programs enabled
HE-800A
Default
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
13. CHANGING FUNCTIONS USING THE DIP SWITCHES
DIP switch B
No.
1
2
3‫ޔ‬4‫ޔ‬5
ON/OFF
ON
OFF
ON
OFF
ON‫ޔ‬ON‫ޔ‬ON
Setting items
Panel DIP switches B - No. 7 and No. 8 are enabled.
ON‫ޔ‬ON‫ޔ‬OFF
Work clamp size: 7.3 × 36.0 mm (Sewing area: 6.0 × 32.0 mm)
ON‫ޔ‬OFF‫ޔ‬ON
Work clamp size: 7.3 × 24.5 mm (Sewing area: 6.0 × 20.0 mm)
ON‫ޔ‬OFF‫ޔ‬OFF
Work clamp size: 6.8 × 36.0 mm (Sewing area: 5.4 × 32.0 mm)
OFF‫ޔ‬ON‫ޔ‬ON
Work clamp size: 6.8 × 24.5 mm (Sewing area: 5.4 × 20.0 mm)
Panel DIP switches B - No. 7 and No. 8 are enabled.
OFF‫ޔ‬ON‫ޔ‬OFF
OFF‫ޔ‬OFF‫ޔ‬ON
OFF‫ޔ‬OFF‫ޔ‬OFF
ON‫ޔ‬ON
ON‫ޔ‬OFF
Work clamp size: 6.8 × 47.0 mm (Sewing area: 5.4 × 40.0 mm)
OFF‫ޔ‬ON
Work clamp size: 5.4 × 24.5 mm (Sewing area: 4.0 × 20.0 mm)
OFF‫ޔ‬OFF
Work clamp size: 5.4 × 36.0 mm (Sewing area: 4.0 × 32.0 mm)
6
OFF
7‫ޔ‬8
OFF
OFF
OFF‫ޔ‬OFF‫ޔ‬OFF
Work clamp size: 5.4 × 19.0 mm (Sewing area: 4.0 × 15.0 mm)
Panel DIP switches B - No. 7 and No. 8 are enabled.
Needle plate size: 5.4 mm
(Max. needle zigzag feed width = 4.0 mm)
Needle plate size: 7.3 mm
(Max. needle zigzag feed width = 6.0 mm)
Work clamp size: 7.3 × 47.0 mm (Sewing area: 6.0 × 40.0 mm)
ON
Default
OFF
OFF‫ޔ‬OFF
* If the programs are initialized when Nos. 3, 4 and 5 are set to OFF, OFF and ON respectively, the initial value for
parameter No. 02 - Cutter size will be set to 6.0 mm. (Normal default value is 13.0 mm.)
HE-800A
82
13. CHANGING FUNCTIONS USING THE DIP SWITCHES
13-2. Circuit board DIP switches
DANGER
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.
Always turn off the power supply before changing any of the DIP switch settings.
Any changes to the DIP switch positions will not be effective until the power is switched off and back on again.
Circuit board DIP switch 1
3994Q
Note:
Move the switches properly.
No.
1
2
3
4
5
6
7
ON/OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
8
OFF
83
Setting items
Three warning beeps
Continuous warning beep
Zigzag motor energization is turned off during pauses or when a
thread breakage occurs
Zigzag motor energization is not turned off during pauses or
when a thread breakage occurs
HE-800A
Default
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
13. CHANGING FUNCTIONS USING THE DIP SWITCHES
Circuit board DIP switch 2
3995Q
Note:
Move the switches properly.
No.
1
2
ON/OFF
ON
OFF
ON
OFF
ON
3
OFF
4
5
6
7
8
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Setting items
Pedal: for standing operation
Pedal: for seated operation
Starting possible only when work clamp is lowered
Starting possible regardless of work clamp position
During standing pedal operation, the work clamp lowers only
while the work clamp pedal is being depressed.
During standing pedal operation, the work clamp keeps lowering
when the work clamp pedal is released.
100V, 110V specifications
200V, 220V, 230V, 380V, 400V specifications
-
HE-800A
Default
OFF
OFF
OFF
OFF
OFF
ON/OFF
OFF
OFF
84
14. ERROR CODE TABLE
14. ERROR CODE TABLE
DANGER
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.
If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display
window. Follow the remedy procedure to eliminate the cause of the problem.
࡮For errors which do not require the power to be turned off (i.e. errors which can be reset), two short beeps will sound.
For error E-02, three short beeps will sound.
࡮For errors which require the power to be turned off (i.e. errors which cannot be reset), a single long beep will sound.
Code
85
Cause
E-00
STOP switch was pressed.
E-01
Upper thread breakage
E-02
Needle up sensor is OFF.
E-05
Zigzag positioning is not carried out.
E-06
Feed positioning is not carried out.
E-07
Work clamp positioning is not carried
out.
E-08
Cutter home position sensor is off.
Remedy
1. Release the STOP switch.
࡮To restart sewing, press the parameter DOWN key and
then depress the treadle to step 2.
࡮To cancel sewing, press the RESET key.
2. If an error still occurs after 1. is carried out, check that
connector P10 on the main P.C. board is properly
connected.
1. Thread the thread, or check that the thread has been
passed through the thread guide.
࡮To restart sewing, press the parameter DOWN key and
then depress the treadle to step 2.
࡮To cancel sewing, press the RESET key.
2. If an error still occurs after 1. is carried out, check that
connector P10 on the main P.C. board is properly
connected.
1. Turn the pulley by hand to set the needle to its highest
position.
2. Check if the sewing machine operation is sluggish because
of a reason such as thread tangled around the rotary hook.
3. If an error still occurs after 1. and 2. are carried out, check
that connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Check that connector P11 on the main P.C. board is
properly connected.
3. Check the operation of the zigzag home position sensor
monitor lamp.
1. Turn off the power.
2. Check that connector P11 on the main P.C. board is
properly connected.
3. Check the operation of the feed home position sensor
monitor lamp.
Turn off the power.
<If E-07 occurs other than when machine is moving to the
home position or starting>
1. Check that connector P11 on the main P.C. board is
properly connected.
2. Check the operation of the work clamp home position
sensor monitor lamp.
<If E-07 occurs when machine is starting>
1. Check the upper thread trimming mechanism, particularly
for wear in the opening cam.
2. Apply grease to the inclined face of the opening cam.
1. Turn off the power.
2. Check if the solenoid stopper tightening nut or the cutter
sensor mounting screw is loose and if the cutter solenoid
(shaft, etc.) is damaged.
3. Check that connector P23 on the main P.C. board and
connector P13 on the sub P.C. board are properly
connected.
4. Check the operation of the cutter home position sensor
monitor lamp.
HE-800A
14. ERROR CODE TABLE
Code
Cause
E-20
Feed and work clamp motor overcurrent
E-21
Zigzag motor overcurrent
E-30
Treadle is depressed to step 2.
E-31
Treadle is depressed to step 1.
E-32
Treadle is depressed backward.
E-40
Control circuit board heat sink is
overheating.
E-41
Inside air circulation fan problem
E-42
Exhaust fan problem
E-44
2-step power supply circuit board +55V
relay error
E-51
E-52
X pitch error
Y pitch error
E-53
Multi-working knife error
E-54
Overall cycle program stitch no. error
(Exceeds 3,000 stitches.)
Remedy
1. Turn off the power and check that the feed mechanism is
normal and that the work clamp moves smoothly.
2. Check that connectors P2 and P5 on the sub P.C. board
are properly connected.
3. Check that connector P22 on the main P.C. board and
connector P10 on the sub P.C. board are properly
connected.
1. Turn off the power and check if the zigzag mechanism
moves smoothly.
2. Check that connector P16 on the main P.C. board is
properly connected.
1. Return the treadle to the neutral position.
2. If an error still occurs after 1. is carried out, check that
connector P7 on the main P.C. board is properly
connected.
1. Return the treadle to the neutral position.
2. If the error still occurs after step 1 is carried out, adjust the
threshold value for memory switch No. 08 to a positive
value.
3. Check that connector P7 on the main P.C. board is properly
connected.
1. Return the treadle to the neutral position.
2. If the error still occurs after step 1 is carried out, adjust the
threshold value for memory switch No. 07 to a negative
value.
3. Check that connector P7 on the main P.C. board is properly
connected.
1. Turn off the power and check that the inside of the control
box is being properly ventilated.
2. Clean the filter of the air intake and the cooling fan.
(Remove dust.)
1. Turn off the power and clean the inside air circulation
cooling fan. (Remove dust.)
2. Check that connectors P13 and P20 on the main P.C.
board are properly connected.
3. Check that connectors CN2, CN3 and CN4 on the 1-step
power supply circuit board are properly connected.
1. Turn off the power and clean the exhaust cooling fan.
(Remove dust.)
2. Check that connectors P1 and P20 on the main P.C. board
are properly connected.
3. Check that connectors CN2, CN3 and CN4 on the 1-step
power supply circuit board are properly connected.
1. Turn off the power.
2. Check that connector P3 on the sub P.C. board is properly
connected.
3. Check that connectors P3 and P4 on the 2-step power
supply circuit board are properly connected.
4. Check that connectors P10 and P13 on the sub P.C. board
are properly connected.
5. Check that connectors P22 and P23 on the main P.C.
board are properly connected.
* This error can occur if a three-phase sewing machine is
used with a single-phase power supply.
Turn off the power and initialize the parameter settings.
Turn off the power and initialize the parameter settings.
Use the programming device (the programming software for
the electronic pattern sewer or a programmer) to delete multiworking knife operations.
Clear the cycle program to reset the error automatically.
HE-800A
86
14. ERROR CODE TABLE
Code
87
Cause
E-55
Stitch no. error (Exceeds 700 stitches.)
E-59
Sewing data error
E-62
Needle up error during operation
E-63
Needle down error during operation
E-64
Timing signal error during operation
E-70
Machine motor running error
E-74
EEPROM error
E-80
Communication ready error
E-81
Communication error
E-90
Machine motor overload
(Excessive load during sewing.)
Remedy
1. Turn off the power and then back on again.
* The zigzag pitch, front tack pitch and rear tack pitch will
be automatically doubled and the error will be cleared.
2. If an error still occurs after 1. is carried out, turn off the
power and initialize the parameter settings.
Turn off the power and initialize the parameter settings.
Turn off the power.
<Software>
▪ If the sewing machine stops before the needle up position,
reduce the setting value for machine motor parameter No.
00 (machine motor stopping position).
▪ If the sewing machine stops after the needle up position,
increase the setting value for machine motor parameter No.
00 (machine motor stopping position).
<Hardware>
1. Turn the pulley by hand and check if the upper shaft locks
or not.
2. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft locks
or not.
3. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft locks
or not.
3. If an error still occurs after 1. is carried out, check that
connector P3 on the main P.C. board is properly
connected.
1. Turn off the power.
2. Check that machine motor harness connector CN7 on the
1-step power supply circuit board is properly connected.
3. Check that the pins of machine motor harness connector
CN7 are inserted correctly.
Turn off the power and replace the main P.C. board.
1. Turn off the power.
2. Check that there is data in the main circuit board ROM.
3. Check that the ROM chips of the main P.C. board are
properly connected. (Check position, orientation, lead
clinching.)
1. Turn off the power.
2. Check that there is data in the main circuit board ROM.
3. Check that the ROM chips of the main P.C. board are
properly connected. (Check position, orientation, lead
clinching.)
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft locks
or not.
3. Check that connectors P3 and P6 on the main P.C. board
are properly connected.
4. Check that machine motor harness connector CN7 and
power supply harness connector CN8 on the 1-step power
supply circuit board are properly connected.
HE-800A
14. ERROR CODE TABLE
Code
Cause
E-92
Machine motor operation error
E-93
Blown solenoid fuse
E-94
Machine motor IC error
E-95
Power supply voltage error (high)
E-96
Power supply voltage error (low)
E-97
Machine motor locked
࡮Excessive load during sewing.
・Motor temperature protection function
has operated. (If the motor's serial
number is "G03xxxxxx" or later)
ArEA
Sewing data values exceed the needle
plate size or work clamp size which
have been set using the panel DIP
switches.
Remedy
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft locks
or not.
3. Check that connectors P3 and P6 on the main P.C. board
are properly connected.
4. Check that machine motor harness connector CN7 and
power supply harness connector CN8 on the 1-step power
supply circuit board are properly connected.
1. Turn off the power.
2. Check fuse F1 on the main P.C. board. If it is blown replace
it.
1. Turn off the power.
2. Turn the pulley by hand and check if the upper shaft locks
or not.
3. Check that connectors P3 and P6 on the main P.C. board
are properly connected.
4. Check that machine motor harness connector CN7 and
power supply harness connector CN8 on the 1-step power
supply circuit board are properly connected.
1. Turn off the power.
2. Check the power supply voltage in the workplace and the
power supply voltage specifications for the control box.
3. Check the connection positions of connectors CN2, CN3
and CN4 on the 1-step power supply circuit board.
࡮200V specification …CN2
࡮100V, 110V, 240V, 220V, 380V, 400V, 415V specifications
… CN3
࡮230V specification … CN4
1. Turn off the power.
2. Check the power supply voltage in the workplace and the
power supply voltage specifications for the control box.
3. Check the connection positions of connectors CN2, CN3
and CN4 on the 1-step power supply circuit board.
࡮200V specification …CN2
࡮100V, 110V, 240V, 220V, 380V, 400V, 415V specifications
… CN3
࡮230V specification … CN4
1. Turn off the power.
2. Check if the timing belt is attached.
3. Turn the pulley by hand and check that the upper shaft
does not lock and the pulley is not loose.
4. Check that connectors P3 and P6 on the main P.C. board
are properly connected.
Three resetting methods are available depending on the
application.
A. By selecting a different program number (If you would like to
keep the program which exceeds the area.)
1. Press the SELECT key.
2. Select a different program number and press the
ENTER key.
If the data for the selected program number does not exceed
the sewing area, the error will be cleared.
B. By initializing the program
While pressing the ENTER key, press the RESET key.
All parameters (00 to 69) for the program will then be
initialized and the machine will switch to program mode.
C. By initializing all programs
Refer to "12-1. Initializing all programs".
HE-800A
88
15. GAUGE PARTS LIST
15. GAUGE PARTS LIST
Needle plate
S50663-001 (1.2 mmS)
<For -2 specification>
S50664-001 (1.4 mmS)
S50665-001 (1.6 mmS)
S51248-101 (1.2 mmS)
<For -3 specification>
S51249-101 (1.4 mmS)
S51250-101 (1.6 mmS)
Specifications
For flat cutter
-2
S50321-001 (1.2 mmS)
-3
S50322-101 (1.2 mmS)
Needle plate
151843-001
156612-001
Plastic plate
89
HE-800A
15. GAUGE PARTS LIST
[A] Work clamp assembly, with finger guard
[B] Work clamp assembly
[C] Finger guard
[D] Work clamp
S37100-102 (25 mmRS)
159765-202 (25 mmRS)
<-2 specification>
A S55347-002 (25 mmRSW)
B S55346-002 (25 mmRSW)
159080-000
C
159080-000
A
B
C
S37109-102 (32 mmRS)
159766-202 (32 mmRS)
159079-000
A
B
C
159761-002
D
159762-002
D
159763-002
A
B
C
S37101-102 (16 mmRS)
159764-202 (16 mmRS)
D
Sewing area 4 × 20
S55345-002
Sewing area 4 × 32
A
B
C
S37103-101 (16 mm)
S01466-201 (16 mm)
159079-000
A
B
C
D
145136-001
D
Sewing area 4 × 20
D
Sewing area 6 × 32
<-3 specification>
S37102-101 (25 mm)
A S55350-001 (25 mmW)
S01467-201 (25 mm)
B S55349-001 (25 mmW)
159080-000
C
159080-000
144630-001
Sewing area 4 × 32
D
S55348-001
Sewing area 5.4 × 32
HE-800A
159081-000
Sewing area 6 × 40
A
B
C
S37110-101 (32 mm)
S01468-201 (32 mm)
159081-000
D
144632-001
Sewing area 5.4 × 40
90
15. GAUGE PARTS LIST
Cutter
S51117-001
S51290-001
1/4
S51355-001
3/8
S51356-001
11/16
3/4
S51359-001
S51351-001
S51352-001
7/16
S25642-001
1/2
S51357-001
13/16
7/8
S51360-001
29
S01273-001
1/2
91
S03280-001
9/16
S01275-001
5/8
HE-800A
9/16
3/4
S51354-001
5/8
S51358-001
1
S01271-001
32
S01274-001
S51353-001
3/8
S01276-001
7/8
S01272-001
7/16
S35630-001
1
16. TROUBLESHOOTING
16. TROUBLESHOOTING
CAUTION
Turn off the power switch and disconnect the power cord before carrying out troubleshooting, otherwise
the machine may operate if the treadle is depressed by mistake, which could result in injury.
16-1. Upper thread breakage
Cause
Needle
Check
Needle facing
Needle installation height
Bent needle
Blunt needle tip or burr
Needle and thread
Upper thread threading
Lower thread threading
Flaw or abrasion on the
thread path
Threading
Thread path
Remedy
As viewed from the direction of the face plate, attach
needle so that the notched part of needle faces
frontward.
Insert the end of the needle shank so that it touches
the top edge of the needle hole of the needle bar.
Replace needle
Replace needle
Replace needle that fits the thread
Thread the upper thread correctly.
Thread the lower thread correctly.
Polish with buff or replace the part.
Especially, pay attention to finishing around needle
plate hole.
Page
57
58
60
Needle plate hole
3996Q
Flaw on the rotary hook
point and rotary hook
edge
Flaw on the rotary hook
holder
Polish with buff or replace the part.
Polish with buff or replace the part.
Check flaw here
-
Adjust the rotary hook
overlap amount.
3997Q
Thread tension
Thread
spring
take-up
Zigzag
thread
upper
thread tension
Bar tack thread upper
thread tension
Thread take-up spring
tension and stroke
Adjust the upper thread tension appropriately.
Adjust the upper thread tension while checking
stitches. (The stitches on top are the upper thread
and the stitches underneath are the bobbin thread.)
Loosen the thread take-up spring tension or shorten
the stroke to such a degree that does not cause
double hooking. Adjust it while checking bar tacking
stitches.
HE-800A
62
62
63
92
16. TROUBLESHOOTING
Cause
Rotary hook
Check
Needle bar height and
needle bar lift amount
Gap between needle and
rotary hook
Rotary hook lubrication
Upper thread amount
Bobbin case
Thread twisted around
rotary hook
Arm thread guide position
Damaged
outside
of
bobbin case and bent
bobbin holder spring, etc.
Remedy
Adjust the needle and hook timing.
1. Adjust the needle bar height to “1” on the gauge.
2. Adjust the needle bar lift amount to “2” on the
gauge.
Adjust the gap between needle and rotary hook to
0.01 - 0.08 mm. (Adjust to as large as possible
without causing skipped stitches to occur.)
* Check that rotary hook point does not strike needle
in zigzag motion.
࡮Too small quantity of lubrication oil will cause
thread breakage. Adjust the quantity of lubrication
oil.
࡮The lubrication holes between rotary hook and
rotary hook joint do not match up.
Remove any twisted thread from the inner and
rotary hook.
Adjust the arm thread guide position
Polish with buff or replace the part.
* Use the HE-800A bobbin case.
Page
72, 73
73
25
73
63
-
16-2. Skipped stitches
Cause
Needle
Check
Needle facing
Needle installation height
Bent needle
Blunt needle tip or burr
Thin needle
Thread
spring
Work clamp
take-up
Thread take-up spring
tension and stroke
Work clamp pressure
Relation between work
clamp assembly and
sewing length
Rotary hook
Blunt rotary hook point
Needle bar height and
needle bar lift amount
Gap between needle and
rotary hook
93
Remedy
As viewed from the direction of the face plate, attach
needle so that the notched part of needle faces
frontward.
Insert the end of the needle shank so that it touches
the top edge of the needle hole of the needle bar.
Replace needle
Replace needle
Use a needle with a count that matches the thread
and material.
Loosen the thread take-up spring tension or shorten
the stroke to such a degree that does not cause
double hooking. Adjust it while checking bar tacking
stitches.
Increase work clamp pressure.
* The standard height of the adjustment screw is
approximately 30 mm, so tighten it further than
this.
Replace work clamp assembly that fits for sewing
length.
* When using knits or woven materials, replace the
parts with the –3 specification parts:
Length feed plate (for specification -3), work clamp
assembly (for knits), needle plate 1.2 (for
specification -3)
Polish with buff or replace the part.
Adjust the needle and hook timing.
1. Adjust the needle bar height to “1” on the gauge.
2. Adjust the needle bar lift amount to “2” on the
gauge.
Adjust the gap between needle and rotary hook to
0.01 - 0.08 mm. (Adjust to as large as possible
without causing skipped stitches to occur.)
* Check that rotary hook point does not strike needle
in zigzag motion.
HE-800A
Page
57
-
63
74
-
72, 73
73
16. TROUBLESHOOTING
Cause
Thread tension
Needle bar plate
Lower thread clamp
Check
Zigzag
thread
upper
thread tension
Vertical and longitudinal
needle bar play
Lower thread retainer
cam
Remedy
Adjust the upper thread tension appropriately.
Page
62
Reduce the needle bar play, or replace the parts.
-
Lower thread retainer cam should be sitting firmly on
lower thread clamp plate roller.
Cam
Roller
-
3998Q
Thread scraps and dust
blocking area around
lower thread clamp and
lower thread presser
Lower thread clamping
force
Clean around the lower thread presser.
࡮If the lower thread clamp and lower thread presser
are bent, replace them.
࡮Check that the screws are tightened.
Screw
Lower thread
clamp
3999Q
Needle plate
Relation between material
and needle plate
Joint sewing
Angle of work clamp
means that material is not
being clamped.
࡮When using knit material, replace with the –3
needle plate.
࡮Replace with a needle plate with a smaller needle
hole.
࡮Replace with short work clamp that matches the
sewing length.
࡮Use the accessory auxiliary sheet.
࡮Process the work clamp assembly to match the
joint section. (Attach or remove rubber.)
-
75
16-3. Uneven seams (1) …… At the sewing start
Cause
Upper
scissors
thread
Upper thread feeding
Check
Installation height
Upper thread scissors
opening timing
Upper thread scissors
operation
Thread take-up amount
Remedy
Adjust the upper thread scissors installation height.
Adjust to an appropriate opening timing.
Apply grease to the inclined face of the opening
cam.
Loosen the screw to decrease thread take-up
amount so that upper thread does not pull out of
scissors assembly at the sewing start.
Decrease
Increase
Page
75
76
76
Screw
-
4000Q
HE-800A
94
16. TROUBLESHOOTING
Cause
Lower thread (bobbin
slip)
Check
Lower thread tension
Bobbin holder spring
Remedy
Adjust the lower thread tension appropriately.
Add tension to the bobbin holder spring.
.
Page
61
Add tension to the spring by the same
amount that the bobbin tab is projecting
-
Make a gap
4001Q
Lower thread
position
retainer
Adjust the lower thread retainer position.
* Adjust lower thread retainer so that a 35 – 40 mm
thread leader is left after trimming.
35 - 40mm
4002Q
Bobbin presser position
Bobbin insertion
Work clamp lifting speed
Adjust the bobbin presser position.
Insert the bobbin correctly.
Reduce the setting for memory switch No. 02.
77
60
79
16-4. Uneven seams (2) …… Lower thread is lifted up at the sewing start
The end of the lower thread protrudes above the seam at the sewing start
Cause
Lower thread retainer
Lower
amount
Check
thread retaining
Remedy
Adjust the lower thread retaining amount.
Page
-
4003Q
Lower thread clamp
Lower
thread
clamp
opening timing
Lower thread clamping
force
Adjust so that the lower thread clamp plate opens
when the feed mechanism moves 6 – 7 mm.
࡮If the lower thread clamp and lower thread presser
are bent, replace them.
࡮Check that the screws are tightened.
77
Screw
Lower thread
clamp
3999Q
95
HE-800A
16. TROUBLESHOOTING
16-5. Uneven seams (3) ……Seam lifts up at the sewing start
Seam lifts up and does not tighten at the sewing start
Cause
Upper
scissors
thread
Upper thread feeding
Check
Upper thread scissors
gradual opening timing
Upper thread scissors
operation
Thread take-up amount
Remedy
Adjust the timing so that the upper thread scissors
gradually start opening when the feed mechanism
moves about 1.5 - 2.5 mm.
Apply grease to the inclined face of the opening
cam.
Loosen the screw to decrease thread take-up
amount so that upper thread does not pull out of
scissors assembly at the sewing start.
Decrease
Increase
Page
76
76
Screw
-
4000Q
16-6. Uneven seams (4) …… Uneven sewing pitch at the sewing start
Bird’s nests form at the sewing start, and after 5 – 6 mm the sewing pitch suddenly increases
Cause
Lower thread clamp
Check
Lower
thread
opening timing
clamp
Remedy
Advance the timing at which the lower thread clamp
starts to open.
Page
77
16-7. Uneven seams (5)……Poor rounding of seam
Cause
Thread tension
Threading
Stitch patterns
Tension release
Check
Zigzag
thread
upper
thread tension
Zigzag
tension
disc
opening
Lower thread tension
Upper thread threading
Lower thread threading
Purl stitch, whip stitch
Tension release timing
Remedy
Adjust the upper thread tension appropriately.
࡮Check the opening of the zigzag tension discs.
࡮Replace the tension release solenoid.
Adjust the lower thread tension appropriately.
Thread the upper thread correctly.
Thread the lower thread correctly.
Set using parameter number 11.
Use parameter numbers 63 to 66 to change the
tension release on and off timing.
Page
62
62
61
58
60
37
44
16-8. Uneven seams (6) …… Around rear tack or front tack
Cause
Tension release
Check
Tension release timing
Threading
Upper thread threading
Lower thread threading
Zigzag
tension
disc
opening
Zigzag
tension
thread
Upper
scissors
thread
Upper thread
operation
scissors
Remedy
Use parameter numbers 63 to 66 to change the
tension release on and off timing.
Thread the upper thread correctly.
Thread the lower thread correctly.
࡮Adjust the tension disc opening amount.
࡮Check the opening of the zigzag tension discs.
࡮Replace the tension release solenoid.
Apply grease to the inclined face of the opening
cam.
HE-800A
Page
44
58
60
62
76
96
16. TROUBLESHOOTING
16-9. Uneven seams (7) …… Loose thread end at end backtack
Cause
Backtack shape
Check
shape
Check
the
backtack
Remedy
Set the value for parameter No. 68 to 1.0.
* If the value is set to 1.0, the rear tack will change.
Page
45
1.0
4004Q
16-10. Uneven seams (8) …… Thread sticking out at end backtack
Cause
Backtack shape
Check
shape
Check
the
backtack
Remedy
Set the value for parameter No. 68 to 1.0.
* If the value is set to 1.0, the rear tack will change.
Page
45
1.0
4004Q
Uneven
feeding
material
Work clamp pressure
Work clamp
Upper thread scissors
opening timing
Upper thread scissors
operation
Lower
thread
clamp
opening timing
Increase work clamp pressure.
* The standard height of the adjustment screw is
approximately 30 mm, so tighten it further than
this.
When using knit material, replace with the –3 work
clamp and needle plate.
Adjust to an appropriate opening timing.
Apply grease to the inclined face of the opening
cam.
Adjust so that the lower thread clamp plate opens
when the feed mechanism moves 6 – 7 mm.
74
76
76
77
16-11. Uneven seams (9) …… Sticking in needle plate
Front and rear tack sections of material gets stuck in needle hole
Cause
Start backtack
Rear tack
Needle plate
97
Check
Number of start backtack
stitches
Rear tack vector shape
Needle plate
Remedy
Use parameter number 40 to reduce the number of
stitches in the front tack.
* If the material is soft, it can be effective to set the
number of stitches to 0.
Use parameter number 37 to set the rear tack vector
shape to a rectangle.
* Setting the vector shape to a rectangle can be
effective when the width is less than the bar tack
width.
࡮When using knit material, replace with the –3
needle plate.
࡮Replace with a needle plate with a smaller needle
hole.
HE-800A
Page
41
41
-
16. TROUBLESHOOTING
16-12. Uneven seams (10) …… All stitches
Cause
Threading
Thread path
Check
Upper thread threading
Lower thread threading
Flaw or abrasion on the
thread path
Remedy
Thread the upper thread correctly.
Thread the lower thread correctly.
Polish with buff or replace the part.
Especially, pay attention to finishing around needle
plate hole.
Page
58
60
Needle plate hole
3996Q
Needle
Thread chips or dust
Upper thread
Rotary hook holder
Needle installation
Needle size
Rotary hook rim
Rotary hook edge
Around needle plate hole
Upper thread tension
Thread and needle
Flaw on the rotary hook
holder
Insert needle fully into needle bar
Replace needle with thicker one.
Remove thread chips or dust
57
69, 71
Increase upper thread tension while checking
stitches.
Replace needle with one that fits for the thread.
Polish with buff or replace the part.
62
-
Check flaw here
-
Adjust the rotary hook
overlap amount.
3997Q
Rotary hook
Bobbin winder guide
Lower thread
Bobbin case
Stitch patterns
Rotary hook holder and
inner rotary hook overlap
amount
Rotary hook lubrication
Bobbin thread tension
Uneven bobbin winding
Lower thread tension
Damaged
outside
of
bobbin case and bent
bobbin holder spring, etc.
Purl stitch, whip stitch
Adjust the rotary hook holder and inner rotary hook
overlap amount.
Decrease the quantity of lubrication oil.
* Note that if you reduce the amount of oil too much,
thread breakages may occur.
Adjust the tension on the bobbin winder guide.
Move bobbin winder tension bracket up and down to
adjust.
Adjust the lower thread tension.
Polish with buff or replace the part.
* Use the HE-800A bobbin case.
Set using parameter number 11.
HE-800A
74
26
59
61
37
98
16. TROUBLESHOOTING
16-13. Upper thread run out
Cause
Upper thread trimmer
assembly
Check
Installation position of
upper thread trimmer
assembly
Remedy
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
࡮ Upper thread trimmer longitudinal position
adjustment
࡮Upper thread trimmer cutting depth adjustment
Page
Service
manual
4005Q
Upper thread trimmer
assembly holding force
Adjust so that the thread does not come out when
you cut it with scissors and hold the end of the
thread between your fingers and gently swing the
assembly.
࡮Bend the scissors U or replace them so that the
correct force is applied.
࡮Repair any damage from striking the needle.
Cotton yarn #60
Holding force approx. 2N
-
4006Q
Opening cam position
Adjust the position so that the scissors do not touch
the opening cam when the work clamp is lowered.
76
0.5 mm
Tension
timing
release
End of tension release at
the beginning of sewing
Opening
amount
of
zigzag tension discs and
bar tack tension discs
4007Q
Use parameter number 63 to retard the tension
release timing.
࡮Adjust the zigzag tension discs by moving the
tension stud bracket in and out.
࡮Adjust the bar tack tension discs opening amount
to 0.5 - 1.0 mm by removing the top cover and
moving the tension release cam.
44
-
Zigzag tension
Tack tension
0.5 - 1 mm
99
HE-800A
4008Q
16. TROUBLESHOOTING
Cause
Upper thread feeding
Check
Thread take-up amount
Remedy
Loosen the screw to decrease thread take-up
amount so that upper thread does not pull out of
scissors assembly at the sewing start.
Decrease
Increase
Page
Screw
-
4000Q
Rotary hook
Needle bar height and
needle bar lift amount
Machine
stopping
position
Lower thread
Thread chips on rotary
hook edge
Upper
shaft
pulley
stopping position
Lower thread retaining
amount
Adjust the needle and hook timing.
1. Adjust the needle bar height to “1” on the gauge.
2. Adjust the needle bar lift amount to “2” on the
gauge.
Remove thread chips.
Adjust the needle up sensor position.
72, 73
77
Adjust the lower thread retaining amount.
-
4003Q
Lower thread snapping
Sewing start speed
Lower
thread
opening timing
Slow speed
clamp
Slow start stitches
Bar
tack
tension
Upper
breakage
thread
thread
Bar tack thread tension is
too strong.
Upper thread breaks.
࡮Use memory switch No. 02 to retard the work
clamp lifting speed.
࡮Process the lower thread retainer, lower thread
clamp and lower thread presser plate so that they
do not snap the lower thread.
Adjust so that the lower thread clamp plate opens
when the feed mechanism moves 6 – 7 mm.
Use parameter number 60 to reduce the slow
speed.
Use parameter number 59 to increase the number of
slow start stitches.
Make the bar tack tension as weak as possible.
Refer to “16-1. Upper thread breakage”.
HE-800A
79
77
44
44
62
92, 93
100
16. TROUBLESHOOTING
16-14. Unraveling of thread trimmed by upper thread trimmer assembly
Cause
Upper thread trimmer
assembly
Check
Installation position of
upper thread trimmer
assembly
Remedy
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
࡮Upper thread trimmer longitudinal position adjustment
࡮Upper thread trimmer cutting depth adjustment
Page
Service
manual
4005Q
Burr on tips of upper
thread trimmer M and
upper thread trimmer U.
Polish with buff or replace the part.
Check burr on upper
side here
Check burr here
-
4009Q
Tension
timing
release
Opening
amount
of
zigzag tension discs and
bar tack tension discs
(particularly
zigzag
tension discs)
࡮Adjust the zigzag tension discs by moving the
tension stud bracket in and out.
࡮Adjust the bar tack tension discs opening amount
to 0.5 - 1.0 mm by removing the top cover and
moving the tension release cam.
-
Zigzag tension
Tack tension
0.5 - 1 mm
4008Q
Work clamp
101
Work clamp lifting speed
Use memory switch No. 02 to retard the work clamp
lifting speed.
HE-800A
79
16. TROUBLESHOOTING
16-15. Upper thread mis-trimming
Cause
Upper thread trimmer
assembly
Check
Installation position of
upper thread trimmer
assembly
Remedy
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
࡮ Upper thread trimmer longitudinal position
adjustment
࡮Upper thread trimmer cutting depth adjustment
Page
Service
manual
4005Q
Upper thread trimmer
assembly holding force
Adjust so that the thread does not come out when
you cut it with scissors and hold the end of the
thread between your fingers and gently swing the
assembly.
࡮Bend the scissors U or replace them so that the
correct force is applied.
࡮Repair any damage from striking the needle.
-
Cotton yarn #60
Holding force approx. 2N
4006Q
Trimmer driving arm
Upper thread
cutting depth
trimmer
Adjust the position of the trimmer driving arm roller.
Service
manual
16-16. Needle strikes upper thread trimmer
Cause
Upper thread trimmer
assembly
Check
Installation position of
upper thread trimmer
assembly
Remedy
Adjust the installation position of upper thread
trimmer assembly by moving the setting plate
assembly.
࡮ Upper thread trimmer longitudinal position
adjustment
࡮Upper thread trimmer cutting depth adjustment
Page
Service
manual
4005Q
upper thread
operating force
trimmer
Remove any scratches and burrs, and adjust the
upper thread trimmer M to open when the projection
is pressed with a force of 4N or less.
-
4010Q
HE-800A
102
16. TROUBLESHOOTING
Cause
Longitudinal
arm
feed
Check
Installation position of the
longitudinal feed arm
Remedy
Move the upper thread trimmer driving link so that it
stops at the face plate. In this position, tighten the
bolts so that the small slot in the upper thread
trimmer lever and the edge of the washer are
aligned.
Aligned
Page
-
Upper thread
trimmer lever
Washer
4011Q
Needle bar height in
machine
stopped
condition
Cam
Opening cam
Work clamp home
position sensor
Upper
shaft
stopping position
pulley
Upper thread scissors
opening timing
Upper thread scissors
gradual opening timing
Upper thread scissors
operation
Work
clamp
home
position sensor position
Adjust the needle up sensor position.
77
Adjust so that the cam opens the stop plate properly.
Adjust the timing so that the upper thread scissors
gradually start opening when the feed mechanism
moves about 1.5 - 2.5 mm.
Apply grease to the inclined face of the opening
cam.
After setting the sewing machine to the home
position, press the RESET key and then adjust the
distance between the upper thread trimmer and the
center of the needle when the work clamp is lowered
to 5.5 - 6.0 mm.
76
76
76
-
5.5 – 6.0 mm
4012Q
Upper thread trimmer
lever
Upper thread trimmer
lever operating force
Adjust so that the upper thread trimmer lever opens
gently when the stop plate is separated from the
stopper.
-
4013Q
16-17. Needle breakage
Cause
Needle
Rotary hook
Check
Needle installation
Needle bar height and
needle bar lift amount
Gap between needle and
rotary hook
103
Remedy
As viewed from the direction of the face plate, insert
needle fully into needle bar so that the notched part
of needle faces frontward.
Adjust the needle and hook timing.
1. Adjust the needle bar height to “1” on the gauge.
2. Adjust the needle bar lift amount to “2” on the
gauge.
Adjust the gap between needle and rotary hook to
0.01 - 0.08 mm. (Adjust to as large as possible
without causing skipped stitches to occur.)
* Check that rotary hook point does not strike needle
in zigzag motion.
HE-800A
Page
57
72, 73
73
16. TROUBLESHOOTING
Cause
Needle plate
Check
Needle plate position
Remedy
Adjust the forward/back position of the needle plate
so that the needle is in the center of the needle hole.
Page
Bisect
Burr on the screw hole
edge (in event of uneven
material feeding)
4014Q
Polish with buff.
Check the chamfered side
finishing
-
(Needle plate cross section)
4015Q
Upper thread trimmer
assembly
Cutter
Needle strikes upper
thread trimmer
Clearance
between
needle bar and cutter
Refer to “16-16. Needle strikes upper thread
trimmer”.
Install the cutter so that the clearance between the
needle bar and the cutter is 0.3 mm.
* The cutter release section of the needle bar should
be at a right angle to the cutter.
102, 103
0.3 mm
74
4016Q
16-18. Imperfect cutter function (imperfect material cutting)
Cause
Cutter
Cutter solenoid
Cutter power
Check
Installation position
cutter
Cutter blade
of
Damage
to
cutter
mechanism parts
Loose screws
Check for a disconnected
cord.
Memory switches
Remedy
Install the cutter so that its edge is aligned with the
top of the needle plate.
࡮If blade is worn or chipped, sharpen it or replace
it.
࡮Replace with the special needle plate (optional).
࡮Replace any parts that are damaged.
࡮Tighten any loose screws.
Connect the cords.
If the material is heavy and difficult to cut, use
memory switch No. 00 to increase the cutting force
of the cutter.
HE-800A
Page
74
4
79
104
16. TROUBLESHOOTING
Cause
Solenoid stopper
Check
Nut
Cutter sensor position
Remedy
Check if the nut is loose, and tighten it securely.
࡮Adjust the cutter sensor position.
࡮ Check if the mounting screws are loose, and
tighten them securely.
Page
-
4.5 ± 0.5 mm
Cutter sensor
-
4017Q
Cutter bar guide
Smoothness
operation
of
cutter
Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
-
16-19. Cutter does not return
Cause
Cutter
Sticks in material
Cutter bar guide
Check
Cutter blade
Needle plate
Smoothness of
operation
cutter
Remedy
If blade is worn or chipped, sharpen it or replace it.
Replace with the special needle plate (optional).
Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
Page
4
-
16-20. Cutter and upper thread scissors touch
Cause
Upper
thread
scissors
Check
Check if the cam opens
the stop plate.
Remedy
Adjust the cam position.
Page
* If the feed mechanism operates when the cam has
not opened the stop plate, the cutter will bump
against the upper thread scissors.
76
4018Q
16-21. Seam is cut
Cause
Length
of
knife
setting
Knife space setting
Cutter
Check
Length of knife
Cutting of zigzag seam
Cutter play
Cutter knife bending
Remedy
Set parameter number 02 to the same value as the
length of the knife being used.
࡮Use parameter number 06 to set the knife X
space.
࡮Use parameter number 08 to set the knife X
position alignment.
Adjust the cutter bar guide so that the cutter
operates smoothly with no play.
Use the cutter holder (option) to prevent the cutter
knife from becoming bent.
Page
36
36, 37
-
-
4019Q
105
HE-800A
16. TROUBLESHOOTING
16-22. Upper thread mis-winding
Cause
Upper
thread
scissors
Check
Installation height
Upper thread scissors
gradual opening timing
Upper thread scissors
opening timing
Upper thread trimmer
assembly movement
Lateral position of upper
thread scissors
Remedy
Adjust the upper thread scissors installation height.
Adjust the timing so that the upper thread scissors
gradually start opening when the feed mechanism
moves about 1.5 - 2.5 mm.
Adjust so that the cam opens the stop plate properly.
࡮Polish blade of upper thread trimmer M and upper
thread guide with buffer.
࡮Check for burrs on the top surface of upper thread
trimmer M.
࡮Replace the parts.
Adjust the lateral position of the upper thread
scissors.
Approx. 1 mm
Page
75
76
76
-
-
4020Q
Stitch quality
Upper thread tension
Zigzag width in the zigzag
stitch portion
Work clamp
Underlay
Bar tack
Uneven material feeding
Underlay is being sewn.
Straight bar tacking is
being carried out
Decrease tension to such a degree that it does not
influence stitch quality.
Use parameter number 05 to increase the zigzag
width to such a degree that it does not influence the
seam shape.
࡮Increase work clamp pressure. (Press material so
that the material is properly stretched.)
࡮When using knits or woven materials, replace the
parts with the –3 specification parts:
Length feed plate (for specification -3), work clamp
assembly (for knits), needle plate 1.2 (for
specification -3)
࡮Use parameter number 52 to reduce the underlay
sewing start pitch to about 0.5.
࡮Use parameter number 48 to reduce the underlay
sewing speed.
* If sewing knitted wear, the upper thread may get
caught easily, so you may need to process the
end of the thread.
When carrying out straight bar tacking, the upper
thread may get caught easily, so you may need to
process the end of the thread.
62
36
74
42, 43
-
16-23. Work clamp is not raised (1) Pulse motor stepping sound cannot be heard
Cause
Work clamp lifting
height setting
Presser lifter pulse
motor
Treadle
Check
Check the work clamp
lifting height setting.
Cord connection
Presser lifter pulse motor
driving gear
Does the work clamp rise
when the treadle is
depressed backward?
Remedy
Change the settings of memory switch Nos. 04, 05,
06.
Check the cord connections and contacts.
Check if the drive gear screw is loose.
If it rises, use memory switch No. 08 to adjust the
threshold value for lowering the work clamp to a
positive value.
HE-800A
Page
79
79
106
16. TROUBLESHOOTING
16-24. Work clamp is not raised (2) Pulse motor stepping sound can be heard
Cause
Machine
stopping
position
Check
Rotary hook touches
lower thread retainer at
the stop position
Remedy
Adjust the needle up stop position.
Page
Retainer
Inner rotary
hook presser
77
4021Q
Work clamp lifting
speed is too fast.
Upper
thread
scissors
Lower thread trimmer
Work clamp lifting speed
setting
Interference
between
upper thread scissors and
work clamp
Upper thread scissors
operation
Interference
between
fixed knife set, lower
thread
clamp,
lower
thread presser and lower
thread retainer.
Use memory switch No. 02 to retard the work clamp
lifting speed.
Check the standard adjustments with the upper
thread scissors removed.
* Be particularly careful when sewing joints.
Apply grease to the inclined face of the opening
cam.
Repair or replace the parts.
Loose screws
Work clamp
height setting
Threading
lifting
Lower thread threading
Lower thread tension
Lower thread
trimmer
connecting rod
76
-
4022Q
Remove all rubbish, dust and thread scraps from the
lower thread trimmer.
Securely tighten all screws.
-
-
Change the settings of memory switch Nos. 04, 05,
06.
* If the work clamp lifting height is too high, the lower
thread trimming operation will not be timed
together with the work clamp rising and the pulse
motor may go out of step.
Insert the bobbin correctly and pass the lower thread
through the bobbin case correctly.
* If the bobbin is inserted back-to-front, it will spin
loosely and the presser lifter may go out of step.
Reduce the lower thread tension.
* If the lower thread tension is too strong, the motor
may go out of step.
Use memory switch No. 02 to reduce the work
clamp lifting speed setting to make the lifting speed
slower.
Buff this section to reduce the
thread retaining resistance.
107
75
Lower thread
trimmer link A assembly
Remove the shoulder
screw to check.
Rubbish, dust or thread
scraps present
Check for loose screws in
the upper thread trimmer,
lower thread trimmer and
work
clamp
lifter
mechanisms.
Check the work clamp
lifting height setting.
79
HE-800A
4023Q
79
60
61
79
16. TROUBLESHOOTING
Cause
Upper
thread
scissors
Work clamp home
position sensor
Check
Upper thread scissors
operation
Work
clamp
home
position sensor position
Remedy
Adjust the upper thread scissors to the standard
setting.
Adjust the work clamp home position sensor
position.
Page
76
-
16-25. Lower thread is not trimmed (pulls when material is removed)
Cause
Machine
stopping
position
Check
Rotary hook touches
lower thread retainer at
the stop position
Remedy
Adjust the needle up stop position.
Page
Retainer
Inner rotary
hook presser
77
4021Q
Fixed knife set
Fixed knife and movable
knife do not mesh.
Adjust the fixed knife set installation position.
Fixed knife
Movable knife
-
4024Q
Knife tip
chipped.
is
bent
or
Repair or replace the knife.
-
16-26. Feed mechanism does not operate or motor is out of step
Cause
Feed pulse motor
Upper
thread
scissors
Check
Cord connection
Upper thread scissors
position
Remedy
Check the cord connections and contacts.
Remove and re-install the upper thread scissors.
Page
-
Projection on scissors M is inserted.
* Always make sure that the upper
thread scissors are in the correct
position before use.
Check if the cam opens
the stop plate.
4025Q
Adjust the cam position.
* If the feed mechanism operates when the cam has
not opened the stop plate, the cutter will bump
against the upper thread scissors.
76
4018Q
HE-800A
108
16. TROUBLESHOOTING
Cause
Feed home position
sensor
Feed timing belt
Check
Feed
home
position
sensor position
Feed timing belt tension
Remedy
Adjust the feed home position sensor position.
Page
-
Adjust the feed timing belt.
-
16-27. Needle does not zigzag or noise occurs when needle zigzags
Cause
Zigzag home position
sensor
Stopper
Check
Zigzag home position
sensor position
Stopper position
Remedy
Adjust the zigzag home position sensor position.
Adjust the stopper position.
Page
-
16-28. Sewing machine stops during sewing
Cause
Thread
breakage
detector
Check
Thread breakage detector
position
Pauses
Panel DIP switch A - No.
3
Threading
Error [E-07]
Upper thread threading
Upper thread scissors
operation
Remedy
Adjust the thread breakage detector position.
* If the detector is not adjusted, sewing may stop
even when the thread is not broken.
When panel DIP switch A - No. 3 is set to ON,
sewing will pause when the treadle is depressed
backward.
* If the treadle is depressed very firmly and then
released, the pedal may depress backward and
cause sewing to be paused.
Pass the thread correctly through the thread guide.
Apply grease to the inclined face of the opening
cam.
Page
-
81
58
76
16-29. Upper shaft does not rotate as far as the needle up stop position
Cause
Thread retainer and
rotary
hook
are
touching.
Check
Thread
trimmer
mechanism position
Remedy
࡮ Turn the machine pulley backward to set the
needle bar to the needle up position.
࡮Push the thread driving arm in the direction of the
arrow to set the thread trimming mechanism to
the home position.
Page
Thread driving arm
-
4026Q
109
HE-800A
INSTRUCTION MANUAL
□
http://www.brother.com/
HE-800A
SA2978-001
2003.12.B(2)
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement