Pfaff expression 2014 Service Manual page 104

8 Pos. Detector
(Synchronizer test)
9 Buttonhole sensor
(buttonhole sensor test)
10 Bobbin sensor open hook
cover
(bobbin monitor test)
11 Bobbin sensor
12 Main motor
(motor test)
13 OKAY
102
Turn the handwheel evenly
to the front
Remove buttonhole guide from "1" to "95"
Open the free-arm cover
and actuate foot control
Close free-arm cover and
actuate foot control
Actuate foot control
Test completed
Display appears If all signals are recogni-
in field for pat- zed, the message "OKAY"
tern display will appear in the display.
If a signal has not been
recognized, "ERROR" will
appear in the display.
Display appears in field
for length display.
3 Main motor runs
2
1
„OKAY"
If control is not actuated,
the width display field is
empty.
If the control is actuated,
actual reading: the width display shows
max. 85 the standardized rpm
(actual reading = e.m.f.)
desired reading: and the length display
85 shows the standardized
desired reading.
If the compari- If control is not actuated
son of the actual during the period of rea-
to the desired ding, or the r.p.m. are too
reading is all low, a error will be dis-
right, "OKAY" played.
will appear in
the display The program stops after
12 secs and the motor
stops.
OKAY The program can only be
exited by turning off the
machine.