Solution 2 - Check the keypads for proper operation.
The keypads allow the operator to program shots to the desired volume, and to engage the pre-infu-
sion feature. The keypads are connected to the controller by an 8 - 16 pin ribbon cable (depending on
model).
1. Remove the machine’s top
panel.
2. Remove the ribbon cable
from the functioning keypad.
3. Switch the cables between
a functioning keypad and the
suspect keypad.
4. Test the suspect keypad.
If it is now functioning, you
have identified a faulty
ribbon cable. Replace the
cable.
5. If the keypad still fails to
function, replace it.
6. Remove the four screws on
the back of the keypad.
7. Separate the back cover
from the keypad.
8. Remove the keypad
from the front of the ma-
chine.
9. Check the solder joints and
connections for evidence of water
damage.
If water damage is apparent, it
may be possible to displace the
moisture and restore function-
ality by cleaning the keypad with
contact cleaner.
