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Popular Brother International MD-817 Manual Pages
Service Manual - Page 3
...TABLE OF CONTENTS
DESCRIPTION OF THE MOTOR
1
SPECIFICATIONS
2
NAME OF EACH PARTS
3
PRINCIPLE OF CONTROL SYSTEM
5
CONFIGURATION
6
MD-806.816.807. 817
SPARE PARTS CODE NUMBERS OF MOTORS
7
Spare parts code for control box
8
Spare parts I .NBN, BAST
20
El Parameter setti ng
26
03 Parameter and timing l ist
27
TROUBLESHOOTING
33
Error indication l ist
34
CHECKING THE MOTOR
Cl...
Service Manual - Page 5
...machines, models DB2-...reliability.
5. Flexible function Each respective time or parameter setting, which were previously fixed, can be used with...Brother clutch motors; Energy Savings Power consumption is best suited to ever replace the moving brake plate.
4. Quiet Operation While the clutch motor produces a whirring sound and vibrations while idling, the DC servomotor is stopped.
3. Internal...
Service Manual - Page 11
..., 817 SPARE PARTS CODE NUMBERS OF MOTORS )
motor assembly
bracket R
bracket L
brush
rotor
Frame assemb I y#2 Brake stator
phase voltage
1 .cp
110V
220V
230V
240V
34)
220V
380V 415V
1,34) al l
14)
al l
34)
220V
34)
380V
415V
1, 3 4) al I
14)
al l
34)
220V
34)
380V
415V
1, 3 4) al I
1, 34) a l l
MD -806 -816
J80069-001
MD -807 -817
J80022...
Service Manual - Page 12
... with thread trimmer. (LS2-B883) LTD.
MADE IN JAPAN
0: month
©: year C): modi f ication No. Explanation of the control box's name plate
name pl ate
brother DC MOTOR MD-816-m THREE PHASE 415V
CONTROL BOX
TYPE GOEDIZI]fEinG1 No.
Service Manual - Page 14
...
843Z.025 B438027 BAS-102
BPD100 ET.
Note: ( ) of transformer is lamp tap voltage.
-------MD-807. 817
--
#14 ( 291670-001 )
--_-----
#15-2 ( J80350-001 )
MD-806, 816 MD-807.817
#13 114
112-7
229644-001
MD-806, 816
MD -807. 817
#14
--
#13
---
,_.-
15-2 Snare parts list 2
PCB. operation panel
291186-340
388259-340
291434-340 388250-340 388260-340...
Service Manual - Page 16
C OPERATION PANEL -)
Sewing machine Model
B737Markll
Service Manual - Page 18
...stop position so that it gives about 13mm when pressed by hand.
2 Needle _position detector (synchronizer) Model DB2-B798
* Take off the power switch. ADJUSTMENT :; Turn on the motor pulley and the ma...- 14 - When the needle up from the pulley side.
* Adjust the belt 0 by loosening the set the needle 5mm up stop sensor 0 for adjustment.
chine pulley. * The belt fits the machine pulley...
Service Manual - Page 19
...tip should be 10 to 12mm with thick materials. (With Model 6748 the needle up stop position. * When the machine pulley is removed once, provide 0.5mm clearance between needle plate top and needle set screws 0 in the direction of order. . . * Turn...position 1. Slightly loosen the two screws 0. Turn the other way to neutral. (This is replaced.
- 15 - Use the machine with two sensors.
Service Manual - Page 22
... are factory set, so that the driver does not touch other .
-18-
The control circuit board is for setting the maximum start... 3A fuses for 380 - 440V three-phase type. Models B737 • B748 • B791 • B793... red index marks match each other parts but the dial for starting slowly ...installed on the control circuit board. Do not fail to secure the fuse holder cap after replacing ...
Service Manual - Page 24
...
4 Actuator switch function ON
OFF
5 Delay time at start with ON
standing operation
OFF
6 Sewing direction of B when treadle is in neutral position
Fixed 4-stitches setting becomes variable
Fixed at 4 stitches
Thread trimming control lable with actuator
switch
Correction switch and reverse sewing switch none
There is delay time at start...
Service Manual - Page 37
..., and transformer
separately. • Whatever trouble you encounter, check that the connectors are...is ON. Remove the cause and turn manually. [The machine or the motor (brake...on the power. TROUBLESHOOTING
* When troubleshooting is required, separately inspect such main parts as a clutch motor... -
Single-phase 15A fuse (1 pc.)
(Replace with the treadle set to "Low". (The range of the power...
Service Manual - Page 42
... motor pulley and method of replacement
1) Selection of motor pulley ...is exchanged, the high backtacking and low speeds will all change.
c) Set operation panel and turn only end backtacking
switch on an effective diameter of... specific sewing, use the next smaller pulley to increase the torque but make speed
adjustment from a lower speed, thereby
Inside dial 0
avoiding troubles due...
Service Manual - Page 49
... the torque. Malfunction of the D printedcircuit board. (single phase 110V or higher)
Replace the control box. Replace the control box. Synchronizer installation position is set at neutral. Control printed-circuit board malfunction.
fast (no functional
problem.
(NO) Malfunction of control box has failed. Replace the fuse and control box. printed-circuit board.
#4 Machine
starts
when...
Service Manual - Page 52
... of changed and you try again?
(YES) Malfunction of the control Replace the control box.
Malfunction of the control Replace the control box. Malfunction of the control Replace the operation box. ITEM
PROBLEM
CHECK
PROBABLE CAUSE
REMEDY
#19 Start backtacking is
the set stitch count.
Same as #20.
printed-circuit board.
#30 Will not trim...
Service Manual - Page 53
ITEM
PROBLEM
CHECK
#33 Needle (upper) will not stop (control box).
#34 Speed is for 8737.
Malfunction of the speed adjustment control. printed-circuit board.
- 49 - printed-circuit board.
PROBABLE CAUSE
REMEDY
Malfunction of each solenoid is not in accordance with the setting of the control Replace the control box.
Note: Resistance of the control Replace the control box.
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