CAS Scale EC-II - Keypad Unresponsive

3. Press the keypad the scale can not work:
Y
N
Y
N
Y
N
The scale can not work
when pressing the keys.
To short-circuit the
keypad.
The problem can be
solved.
The membrane
keypad is damaged.
Change the 16 cores
wire.
The problem can be
solved.
The 16 cores wire
is damaged.
Change the CPU.
The problem can be
solved.
The CPU is
damaged.
Change the 40 cores
socket or RX2.