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4.
Remove five Phillips-head screws securing
the two larger parts of the UI board to the
control panel.
5. Then remove the one Phillips-head screw that
secures the power/pause button to the control
panel.
6. While pushing in on the seven clips that holds
the UI board to the control panel assembly,
pull upwards on the UI Board. If the board
is not held with an upward pressure on it,
the clips will refasten, not letting the board to
disengage from the control panel assembly.
The User Interface (UI) Board is mounted to the
control panel assembly under the plastic cover. It
consists of the display board, cycle select board
and the power/pause button board. They are all
connected together and come all as one part.
NOTE: The cycle select knob does not need
to be removed as it will stay with the control
panel.
User Interface (UI) Board Diagnosing
The User Interface (UI) board is powered by
the Main Board from the CN1 connector. If the
User Interface board is not working, check for
approximately 12 VDC from pin 1 to pin 3 on the
7-pin connector from the main board to the User
Interface board. If voltage is present at the UI
Board, replace the UI board. If no voltage, check
harness and connectors. If good, replace the
main board.
User Interface (UI) Board Removal
1. Remove the control panel (see
Control Panel
in the
Cabinet and Structure
section of this
service guide). Then place the control panel
face down on a protective surface.
2. Remove the single harnesses that supply DC
voltage to the UI board.
3. Disconnect the RJ45 connector by pushing
in the tab on the connector. Then rotate the
connector from the control panel.
Electronics
User Interface (UI) Board
RJ45
Connector
Tab