Pfaff EXPRESSION 2014, Service Manual, Page: 100 / 112

98
14=store pattern sequence
15=clear
16=prog. sel. key left
17=prog. sel. key right
18=stitch width -
19=stitch width +
20=stitch length -
21=stitch
22=correction -
23=corr
24=info
25=pattern mirroring
26=slow
27=needle lowered
28=sewing off
29=reverse sewing key
5 Stepping motor
(stepping motor test)
Visual check:
Both stepping motors
rotate through the stroke
5 times
5
4
3
2
1
According to the stan-
dard, both stepping
motors rotate through the
stroke 5 times alternately,
no error must occur.
6 Foot control
(foot control test)
Press foot control slowly
as far as it will go twice.
from "0" - "85"
Message:
"OK" or
"ERROR"
If control is not actuated,
the width display is
empty.
If control is actuated, the
width display will show
the standardized foot
control reading.
The display value must
count from 0 - 85.
If this isn't the case, the
foot control is faulty.
If control is not actuated
during the period of rea-
ding, an error will be regi-
stered.
7 Pos. Detector
(Synchronizer test)
Turn the handwheel evenly
to the front
Display appears
in field for pat-
tern display
If all signals are recogni-
zed, the message
"OKAY" will appear in the
display.
If a signal has not been