Self Diagnostic Tests - ELNA eXperience 520 Service Manual

PREPARATION:
* Turn off the power switch.
* Shift the bobbin winder spindle to the left.
* Raise the feed dog.
* Shift the slide volume to the left.
* Remove the presser foot and raise the presser foot lifter.
* Turn the handwheel toward you to raise the needle to its highest position.
* Connect the foot controller to the machine.
NOTES:
* Be careful: The sewing machine may start running in its own while in test mode.
* Turn off the power switch before replacing any parts.
* Repeat the diagnostic test until the problems has been resolved.
* You can skip steps in the diagnostic procedure and go directly to the test you want to
perform. (Enter self-diagnostic mode, then press the #01 button until the step number of the
required test is indicated.)
PRELIMINARY TEST:
Turn on the power switch. If any of following problems occur, take the recommended actions in
the order they are shown.
* The machine does not respond when the power switch is turned on.
1. Check each connector connection.
2. Replace the machine socket.
3. Replace the printed circuit board "A".
4. Replace the machine socket.
5. Replace the power transformer.
* The sewing machine light does not light up.
1. Replace the lamp.
2. Replace printed circuit board "A".
* The display shows "
1. Replace the printed circuit board "A".
TO ENTER THE SELF-DIAGNOSTIC MODE:
If you do not press the next button within 2.5 sec, the machine will revert to normal sewing
mode. Should this occur, start over again from step no. 1.
NO.1
Turn the power switch on while
simultaneously pressing the #01
button and the #16 button.

SELF DIAGNOSTIC TESTS

" to " ",
NO.2
Press the #16 button five times to
select menu item "6".
Press the #01 button.
21
MODEL 520
NO.3