18
Tr
ouble
Shooting
Detach top cover and right side cover, then find
fuse holder.
Find transformer located at base plate of the unit
then check its IN/OUT connection and voltage.
(INPUT : AC110V, OUTPUT : AC21V)
Check if the transformer OUTPUT is connected to
controller correctly.
- Check wire connection.
Check fuse inside the fuse holder if it is opened.
> Replace
fuse
if it is faulty.
> Replace
transformer
if it is faulty.
> Replace
controller
if connected correctly.
11-1 POWER MALFUNCTION
Symptom
In case of LED display off although power connected.
Terminal 1 & 2
1
2
3
4