Hitachi 42HDM12, Service Manual

Page: 15 / 41

15
z
Key pad doesn’t work
Take off the back cover and check if
the wire of
PCB-Speaker connectoe
r
has been well connected to the
PCB-Key Pad
and
PCB-Main
?
Key pad doesn’t work.
No
Yes
Change
PCB-Key Pad
and
connect all wires properly.
Check if it works
Yes
No
Change the
PCB-Main.
Test
again
Connect
the wire
properly
Change
PCB- Speaker
connectoe
r and connect all
wires properly. Check if it works