Brother International Z-8550A Instruction Manual - English - Page 86

Is the fixed stitch key turned on?, Use the sewing speed control keys to set the high speed.

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Page 86 highlights

15. TROUBLESHOOTING Problem 12 Incorrect thread trimming (8560A) (Upper and lower threads are both not being trimmed) 13 Incorrect thread trimming (8560A) (Upper thread or lower thread is not being trimmed) 14 The thread wiper does not wipe the thread. (8560A) 15 Oil gauge (1) is not visible in oil gauge window. Possible cause • Is the fixed knife or movable knife damaged or worn? Replace the fixed knife or the movable knife. • Is the thread trimming timing correct? Adjust the rotating direction of the thread trimming cam. • Is the needle properly installed? If it is incorrect, install the needle correctly. • Is the fixed knife or movable knife blunt? Replace the fixed knife or the movable knife. • Do skipped stitches occur during sewing? Refer to "Skipped stitches during sewing". • Is the length of thread trailing from the needle hole too long after thread trimming? Adjust the upper thread feeding device. • Is the oil tank empty? Fill the oil tank with oil. Page 55* 68* 15 55* 77* 69* 9 2195M 16 Machine does not operate • Is the sewing speed setting or backtack speed setting incorrect? at high speed. Use the sewing speed control keys to set the high speed. 22 17 Machine stops during • Is the fixed stitch key turned on? sewing. Press the fixed stitch key so that the indicator turns off. 37 • 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.) 18 Nothing appears on the • Is the operation panel operation panel display. connector 8P inside the control box disconnected? 11* Insert the connector securely. 3558M 19 "GREASEUP" flashes on • This display is to notify you that it is time to apply grease. the operation panel when Apply grease. 52 the power is turned on. Z-8550A, 8560A 78

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Z-8550A, 8560A
15. TROUBLESHOOTING
78
Problem
Possible cause
Page
12
Incorrect thread trimming
(8560A)
(Upper and lower threads
are
both
not
being
trimmed)
•
Is the fixed knife or movable knife damaged or worn?
Replace the fixed knife or the movable knife.
•
Is the thread trimming timing correct?
Adjust the rotating direction of the thread trimming cam.
55*
68*
13
Incorrect thread trimming
(8560A)
(Upper thread or lower
thread
is
not
being
trimmed)
•
Is the needle properly installed?
If it is incorrect, install the needle correctly.
•
Is the fixed knife or movable knife blunt?
Replace the fixed knife or the movable knife.
•
Do skipped stitches occur during sewing?
Refer to “Skipped stitches during sewing”.
15
55*
77*
14
The thread wiper does not
wipe the thread. (8560A)
•
Is the length of thread trailing from the needle hole too long after
thread trimming?
Adjust the upper thread feeding device.
69*
15
Oil gauge (1) is not visible
in oil gauge window.
•
Is the oil tank empty?
Fill the oil tank with oil.
9
16
Machine does not operate
at high speed.
•
Is the sewing speed setting or backtack speed setting incorrect?
Use the sewing speed control keys to set the high speed.
22
17
Machine
stops
during
sewing.
•
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.)
37
*
18
Nothing appears on the
operation panel display.
•
Is
the
operation
panel
connector 8P inside the control
box disconnected?
Insert the connector securely.
11*
19
“GREASEUP” flashes on
the operation panel when
the power is turned on.
•
This display is to notify you that it is time to apply grease.
Apply grease.
52
2195M
3558M