Table Of Contents - Brother HE-800B Service Manual

1. SPECIFICATIONS .................................
1-1.
Specifications .......................................................... 1
1-2.
Standard sewing pattern list .................................... 2
2. NOTES ON HANDLING .........................
3. FUNCTION SETTINGS ..........................
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 ..............................
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 .........
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
CONTENTS
6. ASSEMBLY ..........................................
1
6-1.
6-2.
6-3.
3
6-4.
6-5.
4
6-6.
6-7.
6-8.
6-9.
6-10.
6-11.
6-12.
6-13.
6-14.
6-15.
7. ADJUSTMENT ......................................
26 7-1.
7-2.
7-3.
7-4.
7-5.
7-6.
7-7.
36
7-8.
7-9.
7-10.
7-11.
7-12.
HE-800B
Lower shaft and idle pulley mechanisms ............. 50
Lower thread trimmer mechanism ....................... 52
Feed mechanism ................................................. 54
Threading mechanism ......................................... 57
Presser lifter mechanism ..................................... 59
Needle zigzag mechanism ................................... 62
Cutter mechanism ............................................... 64
Upper shaft and tension pulley mechanisms ....... 67
Lubrication mechanism ........................................ 69
Needle bar and thread take-up mechanisms ..... 75
Presser bar mechanism .................................... 77
Upper thread trimmer mechanism ..................... 79
Thread breakage detector mechanism .............. 80
Rotary hook mechanism .................................... 81
Covers ............................................................... 82
Notes on making adjustments ............................. 83
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
Adjusting the needle bar height ........................... 88
Adjusting the needle and hook timing .................. 89
7-4-1. Adjusting the clearance between needle
and hook tip .................................................. 91
Adjusting the inner rotary hook and rotary hook
holder overlap ...................................................... 91
Adjusting the work clamp pressure ...................... 91
Adjusting the work clamp lift amount ................... 92
Adjusting the work clamp lateral position ............. 93
Adjusting the cutter home position sensor
position ................................................................ 93
Adjusting the cutter installation position............. 94
7-10-1. When using the special needle plate
(needle plate -RB) ..................................... 95
Adjusting the cutter installation height ............... 95
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
49
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