Test Program; Test Start; Display - Pfaff performance 2054 Service Manual

52. Test program

The following accessories must be available for conducting the test:
Foot control, buttonhole guide, full bobbin case, knee lift.
If a machine check is not possible, the operator is requested to perform a visual check.
The message visual check and the following text are displayed:
OK
ERROR
End
The „+" button serves as the
The current test can be interrupted with the „i" button.
If the „Full test" mode is activated, only the next test will be automatically executed after pressing
the „Ok" or „Error" button.
All test results are recorded.
There are two ways of testing the machine with the aid of a test program:
I. Direct testing of the malfunctioning electronic assemblies.
II. Checking all assemblies in sequence, recording the results and displaying the test
results on the screen.

Test start

53. Display

The display memory is first checked.
Irregular patterns are displayed during this check.
Afterward, every 2nd pixel appears alternately on the display.
An evaluation window for visual check is displayed after completion of the test.
Please press now the relevant buttons:
either
or
plus
The current test can be interrupted with the „i" button.
If the „Full test" mode is activated, only the next test will be automatically executed after pressing
the „+" or „-" button.
= button „+"
= button „-"
= „i" (also available in the „Full test" mode)
„OK" button and the „-" button serves as
button „+" = OK (test was successful)
button „-" = ERROR
button „i" = End (end of test with possibility to go to the next test)
(test was not successful)
„Error" button.
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