22
AVD-K150B/K150E/K150G/K150N/K150R
(4) KEY doesn’t working
KEY doesn’t working.
Is 5V applied to the IC501
Pin36?
Does LED or FLD change
when a function button is
pressed?
Refer to “SMPS 5.3VA
Trouble Shooting”.
Replace the defective
switches.
YES
NO
NO
