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41. Self-test, foreword
The self-test provides the mechanic with a simple and quick means of checking the machine.
Sequential faults are not detected.
Faults are only detected if the machine is mechanically in order.
The self-test is carried out sequentially; changing the test sequence is not possible. However,
the program can be stopped any time by switching the machine off.
If a fault occurs, the test is interrupted.
Generally an error in the corresponding test phase is indicated on the display with "ER".
("ER" = Error)
In some test steps an additional visual check must be carried out.
In some cases the operator has to carry out actions at the machine within a certain time span
(see column "Remarks"), as otherwise the test program will consider a fault.
In this case "ER" will appear on the display.
The test should then be repeated for reasons of safety.
If no fault occurs during the test, the machine will display "OK". To change back to a sewing program,
the machine must be turned off and then back on again.
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