Brother DH4-B980 instruction manual Contents

CONTENTS

1. NAMES OF EACH PART		1
2. SPECIFICATIONS		2
2-1. Specifications		2
3. INSTALLATION		3
3-1.	Table processing diagram	3
3-2.	Installing the motor	4
3-3. Installing the machine head		4
3-4. Installing the oil container		5
3-5. Installing the spool stand		6
3-6.	Tightening the V-belt	6
3-7. Installing the control box		7
3-8. Installing the air unit and the valve assembly		7
3-9. Connecting the ground wires and the wirings		8
3-10.Connecting the air tubes		9
3-11.Installing the air hoses		10
3-12.Connecting the power cord		11
4. LUBRICATION		12
4-1.	Adding oil	12
4-2.	Lubrication	12
5. CORRECT USE		14
5-1.	Initializing settings	14
5-2. Changing the lower thread and gimp trimming		14
5-3. Checking the direction of machine operation		15
5-4.	Installing the needle	16
5-5. Threading the upper thread		16
5-6. Threading the lower thread		17
5-7.	Threading the gimp	18
5-8.	Setting the material	18
6. USING THE OPERATION PANEL
AND FRONT PANEL		19
6-1. Panel button and switch names		19
6-2. Selecting a program number		20
6-3.	Changing the mode	20
6-4. Changing the cutting timing		20
6-5.	Setting a program	21
A. Setting the sewing speed		22
B. Setting the shape of the eyelet		22
C. Setting the buttonhole length		22
D. Setting the tacking length		23
E. Setting the offset		23
F. Setting the stitch pitch		23
G. Setting the number of eyelet stitches		24
H. Setting the cutting space		24
I. Setting the knife position compensation		24
P1. Setting X correction		25
P2. Setting Y correction		25
P3. Setting θ 1 correction		25
P4. Settingθ 2 correction		26
6-6.	Using the memory switch	27
6-7.	List of error codes	29

7. SEWING		30
7-1. Using the EMERGENCY STOP switch		30
7-2.	Sewing	31
7-3. Adjusting the thread tension		32
7-4. Needle and knife position		33
7-5. Using the production counter		35
7-6. Using a cycle program		36
7-7. Setting the feed bracket to the front position		37
7-8. Switching between single-pedal and dual-pedal
	operation (Switching the foot controller)	37
7-9.	Using feed mode	38
7-10.Using manual mode		39
7-11.Changing the cycle program counter		40
7-12.Setting the number of home position cycles		40
7-13.Returning to the home position		41
8. CLEANING AND MAINTENANCE		42
8-1.	Cleaning	42
8-2.	Draining the oil	42
8-3. Checking the air filter		42
9. STANDARD ADJUSTMENTS		43
9-1. Adjusting the height of the spreader and looper		43
9-2. Adjusting the needle and looper timing		44
9-3. Adjusting the loop stroke		45
9-4. Adjusting the height of the needle bar		46
9-5. Adjusting the clearance between the
	looper and needle	46
9-6. Adjusting the needle guard		47
9-7. Adjusting the spreader mounting positions		47
9-8. Adjusting the spreader timing		48
9-9. Adjusting the needle racking width
	(stitch width)	48
9-10. Changing the knife cutting length
	(Replacing the cutting block)	49
9-11. Adjusting the contact between the knife
	and the cutting block	50
9-12.Replacing the knife		51
9-13.Adjusting the cutting pressure		51
9-14.Adjusting the cloth opening amount		52
9-15.Adjusting the trimming of the upper thread		53
9-16. Adjusting the trimming of the lower thread
	and gimp	53
9-17.Adjusting the gimp length after trimming (-02) ...		54
9-18.Lower thread presser (-02)		55
9-19.Sub presser (-02)		55
10.SUMMARY OF DIP SWITCHES		56
10-1. Front panel DIP switches		56
10-2. Circuit board DIP switches		57
11. TROUBLESHOOTING		58