Below is the excerpt from the manual, it is not easy to explain this and the manual has pictures.
Here is the link to the manual just paste this into the address bar.
I have tried it using Internet Explorer just to be sure it works as I use Firefox.
Also give it lots of time to download, as it is 30 MB
https://secured.whirlpoo...a53d3fb852572dc004e47ba/$FILE/4317410%20ComboOven.pdf
REMOVING THE USER INTERFACE AND THE OVEN
& MICROWAVE CONTROL BOARD ASSEMBLIES
WARNING
1. Unplug oven or disconnect power.
2. Open the microwave oven door and remove
the two flat-head screws from the bottom
of the control panel frame.
3. Remove the control panel frame and close
the microwave oven door.
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
Control Panel Frame Screws
4. To remove the user interface (UI):
a) Remove the screw from the bracket on
the right side of the user interface and
remove the bracket.
b) Slide the user interface to the right,
unhook it from the left bracket, and
rotate the top forward and down.
c) Disconnect the two ribbon cable connectors
from the user interface and
remove the interface.
UI Bracket Screw
Slide & Unhook UI
User Interface
User Interface Ribbon Cables
5. To remove the oven and microwave
(MW) control board assemblies:
a) Remove the user interface (see step 4).
b) Remove the indicated screws from the
oven or MW control board brackets.
MW Control Board Screws
c) Rotate the top of the MW or oven control
board assembly forward and down,
and disconnect the connectors from the
board as follows:
P1 (8-pin)
P2 (5-pin)
P40 (ribbon cable)
MW Control Board
P40 P2 P1
