ELNA eXperience 520 Service Manual page 27

STEP OPERATION
12) Press needle up/down button,
DC motor led indicates "12" for one
second.
* Press foot control.
THE END OF TEST:
All of test is finished, turn off the power switch.
CORRECT CONDITION
* Led indicates "dc".
* Machine runs at the speed set by
the speed control lever.
Full left: 80 ~100 SPM
Full right: 800 ~840 SPM
25
MODEL 520
DEFECTIVE CONDITION
Machine does not run, led
displays "Lo".
1. Replace DC motor.
2. Replace board "A".