Brother International MD-817 Service Manual - Page 58

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High-speed rotational irregularities. Speed reduction brake doesn't function. Continuous rotation at low speed. Needle (upper) doesn stop. V Starting rotation at slow speed. NO #107-1 YES Good low-speed range. NO #107-1 YES Rotation corresponds NO to treadle depression. #107-3 YES High-speed rotation is stable. NO #107-4 YES Pedal neutral Speed-reduction brake NO functions. #108 YES Machine stops. NO #109 YES Stop position: OK NO #110 YES Backward treadle depression Machine operates. NO #111 YES Thread trimmer functions. NO #112 YES Stops. NO YES Wiper functions. NO #113 TYES END - 54 - P63) A\ Treadle unit (p.67) vo- #108-1 p.69) #109-1 (p.70) #110-1 (p.70) Dm- (p.71) #112-1 (p.72) #113-1 (p.72)

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V
P63)
A\
High-speed
rotational
irregularities.
Starting
rotation
at
slow
speed.
#107-1
YES
Good
low
-speed
range.
#107-1
Speed
reduction
brake
doesn't
function.
YES
Rotation
corresponds
to
treadle
depression.
#107-3
YES
High-speed
rotation
is
stable.
#107-4
YES
Pedal
neutral
Continuous
rotation
at
low
speed.
Needle
(upper)
doesn
stop.
Speed
-reduction
brake
functions.
#108
YES
Machine
stops.
#109
YES
Stop
position:
OK
#110
YES
Backward
treadle
depression
Machine
operates.
#111
YES
Thread
trimmer
functions.
#112
YES
Stops.
YES
Wiper
functions.
#113
TYES
END
NO
NO
NO
NO
NO
Treadle
unit
(p.67)
NO
#108-1
p.69)
NO
#109-1
(p.70)
vo-
NO
#110-1
(p.
70
)
NO
(p.71)
Dm
-
NO
NO
#112-1
(p.72)
#113
-1
(p.72)
-
54
-