– 50 –
(
Continued Next Page
)
Troubleshooting
If it has been veri ed the issue is not with the bulb,
and 120 VAC is not present at the socket, perform
the following steps:
Note:
To gain better access to components, remove
the wires that plug onto the large relays on the
Relay Board. (See
Relay Board
.
) Cut the wire tie that
the Smart Board
CN103 wire harn ess (See
Smart
Board
.) is routed through.
Check voltage between either side of the Bottom
TCO and Relay Board CN5 pin 5.
• If 120 VAC is present, problem is with wiring
(See
Wiring Diagram
.) to socket.
• If 120 VAC is not present, the oven lamp
(cavity) relay on the Relay Board is not closing.
See
Relay Board
troubleshooting section.
To remove the Oven Lamp:
(See
Oven Lamp (Cavity) Assembly Removal
.)
Lamp Shield
Oven Lamp (Cavity) Assembly
To remove the Oven Lamp (Cavity) assembly:
1. Remove the Grill. (See
Grill
.)
2. If present, remove the optional charcoal lter.
Slide the lter toward the left and pull it toward
the front.
3. Remove the Phillips-head screw from the right
side of the lamp shield.
4. Lift the right side of the shield and remove it
from the opening.
Note:
• If necessary, pull the light bulb out and
replace with a 120V-130V, 20W halogen bulb
(part # WB25X10019).
• The light bulb receptacle is attached to the
shield with 2 Phillips-head screws and two 7/32-
in. hex-head nuts.
• A wire harness connects the receptacle to the
shield.
Light Bulb
Harness
Cooktop Lamp
Location - Bottom of microwave
• 120
VAC
• 50
Watts
• Halogen
• Bright/Night/Off
Troubleshooting
If it has been veri ed the issue is not with the bulb,
and 120 VAC is not present at the socket, perform
the following steps:
Note:
To gain better access to components, remove
the wires that plug onto the large relays on the
Relay Board. (See
Relay Board
.
) Cut the wire tie that
the Smart Board
CN103 wire harn ess (See
Smart
Board
.) is routed through.
If Bright is not working, check voltage between
either side of the Bottom TCO and Relay Board CN
06-01.
• If 120 VAC is present, problem is with wiring
(See
Wiring Diagram
.) to socket.
• If 120 VAC is not present, the cooktop lamp
"bright" relay on the Relay Board is not closing.
See
Relay Board
troubleshooting section.
If Night is not working, check voltage between either
side of the Bottom TCO and Relay Board CN6 pin 1.
