FLY E146, Инструкция по обслуживанию, Страница: 32 / 64

4.8 LED NG (on the key board)
LED NG (key)
Check whether the
LED of the KEYPD is
weakly welded or
broken
Re-weld or
change the LED
Check whether there
is anything (or Mylar)
on the key
Check whether the
resistor beside the
LED is broken
Clean or wipe off
the thing
Change the resistor
Checking method:
Crosstesting
the two sides of
LED by Multimeter ,
gearing to the short circuit,
if the LED is on at one
direction, it shows good
N
N
N
Y
Y
Y