Brother HE-800B User manual

HE-800B
Please read this manual before making any adjustments.
ELECTRONIC DIRECT DRIVE LOCKSTITCH BUTTON HOLER
SERVICE MANUAL

HE-800B
This service manual is intended for HE-800B; be sure to read the HE-800B instruction manual before this manual.
Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you
start maintenance.
As a result of research and improvements regarding this product, some details of this manual may not be the same as those
for the product you purchased.
If you have any questions regarding this product, please contact a Brother dealer.

i
HE-800B
SAFETY INSTRUCTIONS
[1] Safety indications and their meanings
This service 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 result in death or serious injury.
WARNING
The instructions which follow this term indicate situations where failure to follow the
instructions could result in death or serious injury.
CAUTION
The instructions which follow
this term indicate situations where failure to follow the
instructions may result in minor or moderate injury.
Symbols
･･････ This symbol ( ) indicates something that you should be careful of. The picture inside the triangle
indicates the nature of the caution that must be taken.
(For example, the symbol at left means “beware of injury”.)
･･････ This symbol ( ) indicates something that you must not do.
･･････ This symbol ( ) indicates something that you must do. The picture inside the circle indicates the
nature of the thing that must be done.
(For example, the symbol at left means “you must make the ground connection”.)

ii
HE-800B
[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 control box cover. Touching areas where high voltages are present will result in serious injury
from electric shocks.
WARNING
Do not allow any liquids to get onto this
sewing machine, otherwise fire, electric shocks or operating problems may
occur.
If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and
disconnect the power plug from the electrical outlet, and then
contact the place of purchase or a qualified
technician.
CAUTION
Environmental requirements
Use the sewing machine in an area which is free from
sources of strong electrical noise such as electrical
line noise or static electric noise.
Sources
of strong electrical noise may cause
problems with correct operation.
Any fluctuations in the power supply voltage should
be within ±10% of the rated voltage for the machine.
Voltage fluctuations which are greater than this may
cause problems with correct operation.
The power supply capacity should be greater than the
requirements for the sewing machine’s power
consumption.
Insufficient power supply capacity may cause
problems with correct operation.
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this
may cause problems with correct operation.
The relative humidity should be within the range of
45%
to 85% during use, and no dew formation should
occur in any devices.
Excessively dry
or humid environments and dew
formation may cause problems with correct operation.
In the event of an electrical storm, turn off the power
and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
Installation
Machine installation should only be carried out by a
qualified technician.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine weighs approximately 56 kg.
The
installation should be carried out by two or more
people.
Do not connect the power cord until installation is
complete, otherwise the machine may operate if the
treadle is depressed by mistake, which could result in
injury.
Use both hands to hold the machine head when tilting
it back or returning it to its original position. If only
one hand is used, the weight of the machine head
may cause your hand to slip, and your hand may get
caught.
Be sure to connect the ground. If the ground
connection is not secur
e, you run a high risk of
receiving a
serious electric shock, and problems with
correct operation may also occur.
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 safety
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 diarrhea.
Keep the oil out of the reach of children.

iii
HE-800B
CAUTION
Sewing
This sewing machine should only be used by
operators
who have received the necessary training
in safe use beforehand.
The sewing machine should not be used for any
applications other than sewing.
Be sure to wear protective goggles when using the
machine.
If goggles are not worn, there is the danger that if a
needle breaks, parts of the broken needle may enter
your eyes and injury may result.
Turn off the power switch at the following times,
otherwise the machine may operate if the treadle is
depressed by mistake, which could result in injury.
•When replacing the needle and bobbin
•When not using the machine and when leaving the
machine unattended
Use threading mode or turn off the power first in order
to carry out threading.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Attach all safety devices before using the sewing
machine. If the machine is used without these
devices attached, injury may result.
Do not touch any of the moving parts or press any
objects against the machine while sewing, as this
may
result in personal injury or damage to the
machine.
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 diarrhea.
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 carry
ing 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.
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.
When replacing parts and installing optional
accessories, be sure to use only genuine Brother
parts.
Brother will not be held responsible for any accidents
or problems resulting from the use of non-genuine
parts.
If any safety devices have been removed, be
absolutely sure to re-
install them to their original
positions
and check that they operate correctly before
using the machine.
To prevent accidents and problems, do not modify
the machine yourself.
Brother will not be held responsible for any accidents
or problems resulting from modifications made to the
machine.

iv
HE-800B
[3] Warning labels
The following warning labels appear on the sewing machine.
Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or
are difficult to read, please contact your nearest Brother dealer.
1
2
*Safety devices
(A) Eye guard
(B) Finger guard
(C) Thread take-up cover
(D) Motor cover
(E) Slide cover
3
Be careful to avoid injury from the moving thread
take-up.
7
4
Be careful not to get your hands caught when returning
the machine head to its original position after it has
been tilted.
5
Be careful to avoid injury from the moving cutter.
6
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.

v
HE-800B
Oil tank
(accessory)
4732M
4731M
4730M

HE-800B
CONTENTS
1. SPECIFICATIONS .................................1
1-1. Specifications .......................................................... 1
1-2. Standard sewing pattern list .................................... 2
2. NOTES ON HANDLING.........................3
3. FUNCTION SETTINGS ..........................4
3-1. List of special functions when power is turned
on........................................................................... 4
3-2. List of advanced functions ..................................... 6
3-3. Setting memory switches (Advanced).................... 7
3-4. List of memory switches......................................... 8
3-5. Pedal operation mode setting method ................. 14
3-6. Checking the error history.................................... 16
3-7. Input checking method......................................... 17
3-8. Output checking method ...................................... 20
3-9. Confirming software version................................. 22
3-10. Protection settings ............................................. 23
4. USING SD CARDS .............................. 26
4-1. Notes on handling SD cards
(commercially available) ...................................... 26
4-2. Structure of an SD card folder.............................. 26
4-3. Preparation for reading and writing data .............. 27
4-4. Reading program data (parameters).................... 28
4-5. Writing program data (parameters) to an SD
memory card........................................................ 29
4-6. Reading memory switch data............................... 30
4-7. Writing memory switch data to the SD card ......... 31
4-8. Reading sewing machine data............................. 32
4-9. Writing sewing machine data to an SD card ........ 33
4-10. Writing error log data to an SD card .................. 34
4-11. Updating the control program version................ 35
5. MECHANICAL DESCRIPTIONS ......... 36
5-1. Needle bar and thread take-up mechanisms ....... 36
5-2. Upper shaft, lower shaft and rotary hook
mechanisms......................................................... 37
5-3. Needle zigzag mechanism................................... 38
5-4. Presser foot lifter mechanism............................... 39
5-5. Feed mechanism ................................................. 40
5-6. Cutter mechanism................................................ 40
5-7. Thread breakage detection mechanism............... 41
5-8. Tension release mechanism ................................ 42
5-9. Upper thread trimmer mechanism........................ 43
5-9-1. Upper thread scissors Gradually opens...... 45
5-9-2. Upper thread scissors Open ....................... 46
5-10. Lower thread trimmer mechanism ...................... 47
5-10-1. Lower thread clamp open at the sewing start
Open ················································48
6. ASSEMBLY ..........................................49
6-1. Lower shaft and idle pulley mechanisms ............. 50
6-2. Lower thread trimmer mechanism ....................... 52
6-3. Feed mechanism ................................................. 54
6-4. Threading mechanism ......................................... 57
6-5. Presser lifter mechanism ..................................... 59
6-6. Needle zigzag mechanism................................... 62
6-7. Cutter mechanism ............................................... 64
6-8. Upper shaft and tension pulley mechanisms ....... 67
6-9. Lubrication mechanism........................................ 69
6-10. Needle bar and thread take-up mechanisms..... 75
6-11. Presser bar mechanism .................................... 77
6-12. Upper thread trimmer mechanism ..................... 79
6-13. Thread breakage detector mechanism.............. 80
6-14. Rotary hook mechanism.................................... 81
6-15. Covers............................................................... 82
7. ADJUSTMENT......................................83
7-1. Notes on making adjustments ............................. 83
7-2. Adjusting the home position................................. 84
7-2-1. Switching to home position adjustment
mode............................................................. 84
7-2-2. Needle zigzag (X) motor home position ........ 85
7-2-3. Feed (Y) motor home position....................... 86
7-2-4. Work clamp (P) motor home position............ 87
7-3. Adjusting the needle bar height ........................... 88
7-4. Adjusting the needle and hook timing.................. 89
7-4-1. Adjusting the clearance between needle
and hook tip .................................................. 91
7-5. Adjusting the inner rotary hook and rotary hook
holder overlap...................................................... 91
7-6. Adjusting the work clamp pressure...................... 91
7-7. Adjusting the work clamp lift amount ................... 92
7-8. Adjusting the work clamp lateral position............. 93
7-9. Adjusting the cutter home position sensor
position ................................................................ 93
7-10. Adjusting the cutter installation position............. 94
7-10-1. When using the special needle plate
(needle plate -RB) ..................................... 95
7-11. Adjusting the cutter installation height ............... 95
7-12. Adjusting the upper thread trimming.................. 96
7-12-1. Adjusting the longitudinal feed arm
assembly position ....................................... 97
7-12-2. Adjusting the trimmer driving arm
assembly position ....................................... 97
7-12-3. Adjusting the lateral position of the upper
thread scissors at the sewing start.............. 98
7-12-4. Adjusting the longitudinal position of the
upper thread scissors.................................. 98

HE-800B
7-12-5. Adjusting the cutting depth of the upper
thread scissors ............................................ 99
7-12-6. Adjusting the installation height of the
upper thread scissors................................ 100
7-12-7. Adjusting the upper thread scissors
gradual opening timing.............................. 101
7-12-8. Adjusting the upper thread scissors
opening timing........................................... 102
7-12-9. Adjusting the overlapping amount of the
upper thread scissors and the work clamp 103
7-13. Adjusting the lower thread trimming................. 104
7-13-1. Adjusting the lower thread trimmer fixed
knife engagement amount......................... 104
7-13-2. Adjusting the lower thread retaining
amount ...................................................... 104
7-13-3. Adjusting the lower thread clamp opening
timing ........................................................ 105
7-13-4. Adjusting the lower thread clamp opening
amount ...................................................... 106
7-14. Adjusting the bobbin presser ........................... 106
7-15. Adjusting the thread breakage detector ........... 107
7-16. Adjusting the thread tension at the tack
tension control ................................................. 108
7-17. Adjusting the thread tension at the zigzag
tension control ................................................. 108
7-18. Adjusting the upper thread feeding amount..... 109
7-19. Adjusting the rotary hook lubrication................ 109
7-20. Adjusting the upper shaft motor reference
position ............................................................ 110
7-21. Standard settings for treadle depression
stroke............................................................... 111
8. INSTALLING THE 3-PEDAL FOOT
SWITCH (OPTION).............................112
9. ELECTRIC MECHANISM ...................113
9-1. Precautions at the time of adjustment................ 113
9-2. Components inside and outside the control box
and in the operation panel ................................. 114
9-3. Fuse explanation................................................ 115
9-4. Connectors......................................................... 116
9-4-1. Connector positions..................................... 116
9-4-2. Contact failure ............................................. 118
9-5. Troubleshooting ................................................. 123
9-5-1. Troubleshooting flowchart ........................... 123
9-5-2. Problem solution and measures.................. 127
10. TABLE OF ERROR CODES.............142
11. TROUBLESHOOTING ......................148
11-1. Upper thread breakage.................................... 148
11-2. Skipped stitches............................................... 149
11-3. Uneven seams (1)……At the sewing start....... 151
11-4. Uneven seams (2)……Lower thread is lifted
up at the sewing start....................................... 152
11-5. Uneven seams (3)……Seam lifts up at the
sewing start...................................................... 152
11-6. Uneven seams (4)……Uneven sewing pitch at
the sewing start ............................................... 153
11-7. Uneven seams (5)……Poor rounding of seam 153
11-8. Uneven seams (6)……Around rear tack or
front tack.......................................................... 153
11-9. Uneven seams (7)……Loose thread end at
end backtack ................................................... 153
11-10. Uneven seams (8)……Thread sticking out at
end backtack................................................. 154
11-11. Uneven seams (9)……Sticking in needle
plate.............................................................. 154
11-12. Uneven seams (10)……All stitches............... 155
11-13. Upper thread run out..................................... 156
11-14. Unraveling of thread trimmed by upper
thread trimmer assembly .............................. 158
11-15. Upper thread miss-trimming .......................... 159
11-16. Needle strikes upper thread trimmer............. 160
11-17. Needle breakage........................................... 161
11-18. Imperfect cutter function (imperfect material
cutting).......................................................... 162
11-19. Cutter does not return ................................... 162
11-20. Cutter and upper thread trimmer touch ......... 163
11-21. Seam is cut ................................................... 163
11-22. Upper thread miss-winding............................ 164
11-23. Work clamp is not raised (1)……Error does
not occur....................................................... 164
11-24. Work clamp is not raised (2)……Error occurs.
...................................................................... 165
11-25. Lower thread is not trimmed (pulls when
material is removed) ..................................... 166
11-26. Feed mechanism does not move and error
occurs. .......................................................... 166
11-27. Needle does not zigzag or noise occurs
when needle zigzags .................................... 167
11-28. Sewing machine stops during sewing ........... 167
11-29. Upper shaft does not rotate as far as the
needle up stop position................................. 167
11-30. Operation panel display freezes and
operation is not possible ............................... 167

HE-800B
1. SPECIFICATIONS
1
1. SPECIFICATIONS
1-1. Specifications
Main use
Buttonhole size
2
Buttonholes for clothing such as dress shirts,
blouses, work clothes and women's clothes
A: Max.6 mm
B: Max. zigzag stitch length 36 mm
C: Length of the hole 4 – 32 mm
D: Max. buttonhole length 40 mm
3
Buttonholes for knitted garments such as
knitted underwear, sweaters, cardigans and
jerseys
Max. sewing speed
4,000 sti/min
Zigzag mechanism
Pulse motor driven mechanism
Feed mechanism
Pulse motor driven mechanism
Work clamp lifter mechanism
Pulse motor driven mechanism
Height of work clamp
13 mm max. (adjustable)
Cutter drive method
Double position solenoid
Lower thread holding device
Standard equipment
Bobbin presser Standard equipment
Standard sewing pattern
21
Memory pattern
50
Max. number of stitch
999 stitches / program (Overall cycle program stitch no. 3,000 stitches)
Needle
-2
-3
Schmetz 134 Nm90
Schmetz 134 Nm75
Data recording media
SD memory card (No guarantees of operation can be given for any media.)
Power supply Single-phase 100V / 220V, 3-phase 220V / 380V / 400V
(For single-phase 100 V and three-phase 380 V/400 V, the trans box is required.)
2193Q
C D
A
B
4734M

HE-800B
1. SPECIFICATIONS
2
1-2. Standard sewing pattern list
Rectangle
Radial
Round
Straight bar tack
Radial-rectangle
Round-rectangle
Eyelet-rectangle
Rectangle-radial
Round-radial
Eyelet-radial
Rectangle-round
Radial-round
Eyelet-round
Rectangle-taper tack
Radial-taper tack
Round-taper tack
Eyelet-taper tack
Rectangle-tack
Radial-tack
Round-tack
Eyelet-tack
Rear tack
Front tack

2. NOTES ON HANDLING
HE-800B
3
2. NOTES ON HANDLING
About the machine set-up location
・Do not set up this sewing machine near other equipment
such as televisions, radios or cordless telephones,
otherwise such equipment may be affected by electronic
interference from the sewing machine.
・The sewing machine should be plugged directly into an AC wall
outlet. Operation problems may result if extension cords are
used.
Carrying the machine
・The machine should be carried by the arm by two people as
shown in the illustration.
Tilting back the machine head
1. Pack away any tools which are near the table.
2. Secure the foot (A) so that the table will not move, and then pull
the arm with both hands to tilt back the machine head.
* While supporting the arm with both hands, gently lower it.
Returning the machine head to the upright position
1. Pack away any tools which are near the table.
2. While supporting the arm with both hands, gently return the
machine head to its original position.
2516B
0597B
0598D
0599D

HE-800B
3. FUNCTION SETTINGS
4
3. FUNCTION SETTINGS
3-1. List of special functions when power is turned on
This list shows the key operations for using special functions.
1
Data initialization function
Refer to the CD Instruction Manual.
4
Output check function
Refer to “3-8. Output checking method”.
2
Memory switch setting mode (Advanced)
Refer to “3-3. Setting memory switches (Advanced)”.
5
Software version display function
Refer to “3-9. Confirming software version”.
3
Input check function
Refer to “3-7. Input checking method”.
6
Error log display function
Refer to “3-6. Checking the error history”.
2593B
0600D
0601D
0604D
0602D
0605D
0603D
0606D

HE-800B
3. FUNCTION SETTINGS
5
7
Home position adjusting mode
Refer to “7-2. Adjusting the home position”.
10
Protect setting mode
Refer to “3-10. Protection settings”.
8
Treadle position adjustment mode
Refer to “7-22.
Standard settings for treadle
depression stroke”.
11
Version update
Refer to “4-11. Updating the control program version”.
9
Upper shaft motor standard position
adjustment mode
Refer to “7-20
. Adjusting the upper shaft motor
reference position”.
0607D
0610D
0608D
0611D
0609D

HE-800B
3. FUNCTION SETTINGS
6
3-2. List of advanced functions
This list shows the key operations for using advanced functions.
1
Lower thread counter setting mode
Refer to the CD Instruction Manual.
2
Production counter setting mode
Refer to the CD Instruction Manual.
0612D
0613D
0614D

HE-800B
3. FUNCTION SETTINGS
7
3-3. Setting memory switches (Advanced)
The settings for the memory switches are valid for all programs.
Refer to “3-4. List of memory switch” for details on memory switch Nos. and settings.
1
While pressing the TEST and MEMSW keys, turn on the power switch.
(1) Memory switch number
(2) Setting for selected number
(3) Setting range
2
Select the memory switch (1) that you would like to change the setting for.
3
Change the setting value (3).
•When the setting value is changed, (3) will start flashing.
•If you would like to return the setting to the default value,
press the RESET key.
4
Apply the changed setting.
The setting for the memory switch will be stored and (3) will
stop flashing and illuminate steadily.
5
To change the settings for other memory switch Nos., repeat the operations in steps 2 to 4 above.
6
Press the TEST key to exit memory switch mode.
Normal sewing machine operation will then be possible.
4787M
4792M
4857M
Flashing
0615D
4923M
4924M
4925M
4925M
4917M
4794M

HE-800B
3. FUNCTION SETTINGS
8
3-4. List of memory switches
NOTE:
In standard memory switch setting mode (refer to the CD instruction manual), the bottom two digits only display memory
switch Nos. 00 to 49.
To make the bottom two digits display memory switch Nos. 50 to 99, switch the sewing machine to Administrator memory
switch setting mode. (Refer to the previous page.)
Work clamp setting (001 to 099)
No.
Setting items
Setting range
Default value
001
Work clamp height when treadle is depressed.
Settings can be made in units of 1 mm.
1 to 13
13
002
Work clamp height when treadle is at neutral position.
Settings can be made in units of 1 mm.
1 to 13
10
003
Work clamp operation when treadle is depressed to the 1st step.
*
When using a triple pedal (optional part), this number will not be
displayed.
1: Work clamp does not drop to intermediate position.
2: Work clamp drops to intermediate position.
1 to 2
1
004
Work clamp height (mm) when dropped to intermediate position.
* Displayed when No. 003 above is set to “2”.
Settings can be made in units of 0.1 mm.
0.1 to 8.0
1.0
050
*1
Sewing machine starting procedure (pedal type).
1: Treadle.
3: Triple pedal.
1,3
1
052
Pausing enabled during automatic sewing when treadle is depressed backward.
*
When using a triple pedal (optional part), this number will not be
displayed.
OFF: Pausing is not allowed.
ON: Pausing is allowed.
ON/OFF
OFF
053
Work clamp operation when using a triple pedal.
* When using a treadle, this number will not be displayed. (Refer to P. 15.)
* Neutral indicates that the work clamp is at the neutral position.
1: Remains lowered even when the work clamp switch is released, intermediate
lowering disabled, and starting prohibited when at neutral.
2: Remains lowered even when the work clamp switch is released, intermediate
lowering enabled, and starting prohibited when at neutral.
3: Remains lowered even when the work clamp switch is released, intermediate
lowering disabled, and starting allowed when at neutral.
4: Remains lowered even when the work clamp switch is released, intermediate
lowering enabled, and starting allowed when at neutral.
5: Returns to neutral when the work clamp switch is released, intermediate
lowering disabled, and starting prohibited when at neutral.
6: Returns to neutral when the work clamp switch is released, intermediate
lowering enabled, and starting prohibited when at neutral.
7: Returns to neutral when the work clamp switch is released, intermediate
lowering disabled, and starting allowed when at neutral.
8: Returns to neutral when the work clamp switch is released, intermediate
lowering enabled, and starting allowed when at neutral.
1 to 8
1
*1 This is not initialized during initialization mode. Also not overwritten from SD card.

HE-800B
3. FUNCTION SETTINGS
9
No.
Setting items
Setting range
Default value
055
Work clamp operation after automatic sewing is finished.
OFF: Work clamp remains lowered after automatic sewing is finished.
To raise the work clamp, carry out the following operations.
(A) For treadle: Depress the treadle backward.
(B) For triple pedal: Press the work clamp lifter switch.
ON: Work clamp remains raised after automatic sewing is finished.
ON/OFF
ON
060
Work clamp lifting speed.
-: Lifting speed becomes slower.
+: Lifting speed becomes faster.
-4 to 4
0
061
Work clamp lowering speed.
-: Dropping speed becomes slower.
+: Dropping speed becomes faster.
-4 to 4
0
062
Thread trimming speed.
-: Thread trimming speed becomes slower.
+: Thread trimming speed becomes faster.
-4 to 4
0
Sewing machine motor settings (100 to 199)
No.
Setting items
Setting range
Default value
150
Automatic needle lifter operation ON/OFF.
OFF: If the pulley is at the needle up stop position during needle bar and work
clamp home position detection, a needle up error will be generated.
ON: If the pulley is not at the needle up stop position during needle bar and
work clamp home position
detection, it will move automatically to the
needle up stop position, and then home position detection will be carried
out.
ON/OFF
ON
151
Needle up stop position correction.
Setting can be carried out in units of 1°.
-: Stopping position becomes earlier.
+: Stopping position becomes later.
-7 to 7
0

HE-800B
3. FUNCTION SETTINGS
10
Feed mechanism (200 to 299)
No.
Setting items
Setting range
Default value
250
Automatic upper shaft deceleration to emphasize feeding.
OFF: Normal.
ON: The proportional feed time for each stitch is
reduced from normal in
order to prevent needle deflection with heavy materials.
* This may limit the upper shaft speed.
ON/OFF
OFF
251
Feed timing correction.
Setting can be carried out in units of 1°.
-: Feed timing is advanced in relation to the upper shaft phase.
+: Feed timing is retarded in relation to the upper shaft phase.
-20 to 20
0
252
*1
Home position detection method after power is turned on.
1: Home position detection is carried out by pedal operation.
2: Home position detection is carried out by pressing the RESET key.
1 to 2
1
*1 This is not initialized during initialization mode. Also not overwritten from SD card.
Operation panel settings (300 to 399)
No.
Setting items
Setting range
Default value
300
Parameter number assignment for FUNC key.
Functions can be assigned to the FUNC key to make it operate as a seventh
shortcut key.
OFF: No assignment.
(The help screen is displayed while the FUNC key is pressed.)
1 to 60: When the FUNC key is pressed, the parameter setting screen for the
number which has been set is displayed.
OFF, 1 to 60
OFF
301
Display screen contrast.
You can change the degree of contrast.
The higher the number, the stronger the contrast.
1 to 15
10
302
Counter display during automatic sewing mode.
The contents
appearing at (1) in the display during automatic sewing mode
can be set to either the lower thread counter display or the production counter
display.
1: Lower thread counter
2: Production counter
1 to 2
1
350
Production counter operation by cycle sewing units during cycle sewing.
OFF: Counts in units of individual programs (1 hole).
ON: Counts in units of individual cycle programs.
ON/OFF
OFF
4926M

HE-800B
3. FUNCTION SETTINGS
11
User program settings (400 to 499)
No.
Setting items
Setting range
Default value
450
Maximum sewing speed.
Setting can be carried out in units of 100 (sti/min).
* When setting the sewing speed, the speed will be limited by this value.
1000 to 4000
4000
451
Maximum number of cycle programs.
This lets you set the number of cycle programs that can be used.
* If you do not want cycle programs to be displayed, set to “0”.
0 to 9
9
Device settings (500 to 599)
No.
Setting items
Setting range
Default value
550
Cutter power.
The larger the value, the stronger the cutting force.
1 to 6
3
551
Cutter home position error checking.
OFF:
Error checking is not carried out (emergency measures when there is a
sensor problem).
ON: Error checking enabled.
ON/OFF
ON
552
Upper thread tightening when sewing underlays.
OFF: Upper thread is not tightened.
ON: Upper thread is tightened.
ON/OFF
OFF
554
Using the thread breakage detector.
OFF: Thread breakage detector is not used.
ON: Thread breakage detector is used.
ON/OFF
ON
555
Number of stitches before upper thread breakage is detected.
* Displayed when No. 554 above is set to “ON”.
Upper thread breakage detection starts after the set number of stitches has
been sewn.
1 to 10
10
556
Number of stitches for upper thread breakage judgment.
* Displayed when No. 554 above is set to “ON”.
An
upper thread breakage error occurs when the upper thread breakage
signal is continuously ON for the set number of stitches.
2 to 7
5