Brother International S-7200B Service Manual - Page 74

Is the power supply connector, disconnected from the control

Get Brother International S-7200B PDF manuals and user guides View all Brother International S-7200B manuals
Add to My Manuals
Save this manual to your list of manuals

Page 74 highlights

13. TROUBLESHOOTING Problem 13 Broken needles 0469M 14 Oil gauge (1) is not visible in oil gauge window. Possible cause Is the material being pushed or pulled with excessive force during sewing? Is the needle properly installed? If it is incorrect, install the needle correctly. Is the needle bent, is the needle tip blunt, or is the needle hole blocked? Replace the needle. Is the needle and rotary hook timing correct? Adjust the height of the needle bar. Adjust the clearance between the needle and the tip of the rotary hook. Is the needle timing too advanced with respect to the feed dog? Retard the needle timing. Caution It is extremely dangerous to leave any pieces of broken needle sticking in the material. If the needle breaks, search for all pieces until the whole of the needle is found again. Furthermore, we recommend that through steps be taken to account for such needles to comply with product liability regulations. Page Instruction manual 30 31 30 Is the oil tank empty? (-[]0[], []3[] specifications) Fill the oil tank with oil. Instruction manual 2195M 15 Machine does not operate when power is turned on and treadle is pressed. 16 Machine does not operate at high speed. 17 Machine stops during sewing. Is the power supply connector disconnected from the control box? Insert the connector securely. Instruction manual 2196M Is the sewing speed setting or backtack speed setting incorrect? Use the sewing speed control keys to set the high speed. Is the fixed stitch key turned on? Press the fixed stitch key so that the indicator turns off. Is the power supply voltage too low? Check the power supply. (If the power cord is too long or too many appliances are being run from a single outlet, this may cause voltage drops which will in turn cause the reset function to activate and stop the machine, even if the power supply itself is normal.) Instruction manual Instruction manual 67 S-7200B

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
S-7200B
13. TROUBLESHOOTING
67
Problem
Possible cause
Page
13
Broken needles
y
Is the material being pushed or pulled with excessive force during
sewing?
y
Is the needle properly installed?
If it is incorrect, install the needle correctly.
y
Is the needle bent, is the needle tip blunt, or is the needle hole
blocked?
Replace the needle.
y
Is the needle and rotary hook timing correct?
Adjust the height of the needle bar.
Adjust the clearance between the needle and the tip of the
rotary hook.
y
Is the needle timing too advanced with respect to the feed dog?
Retard the needle timing.
y
It is extremely dangerous to leave any pieces of broken
needle sticking in the material. If the needle breaks, search
for all pieces until the whole of the needle is found again.
y
Furthermore, we recommend that through steps be taken to
account for such needles to comply with product liability
regulations.
Instruction
manual
30
31
30
14
Oil gauge (1) is not visible
in oil gauge window.
y
Is the oil tank empty?
(-[]0[], []3[] specifications)
Fill the oil tank with oil.
Instruction
manual
15
Machine does not operate
when power is turned on
and treadle is pressed.
y
Is the power supply connector
disconnected from the control
box?
Insert
the
connector
securely.
Instruction
manual
16
Machine does not operate
at high speed.
y
Is the sewing speed setting or backtack speed setting incorrect?
Use the sewing speed control keys to set the high speed.
Instruction
manual
17
Machine
stops
during
sewing.
y
Is the fixed stitch key turned on?
Press the fixed stitch key so that the indicator turns off.
y
Is the power supply voltage too low?
Check the power supply.
(If the power cord is too long or too many appliances are being
run from a single outlet, this may cause voltage drops which will
in turn cause the reset function to activate and stop the
machine, even if the power supply itself is normal.)
Instruction
manual
Caution
0469M
2195M
2196M