– 29 –
• Non-heat source relays require:
◊
Relay Operating Voltage (12 VDC between
CN01 pins 2 and 4.)
◊
Relay Activate Signal (5 VDC between
the active relay, see Relay Chart in
troubleshooting section), and CN01 pin 4.
• Buzzer and Backlight Operating Voltage (12 VDC
between CN01 pins 3 and 4.)
• DC Ground is on CN01 pins 4, 5, and 6.
• Disassembly.
(See
Disassembly
.)
Troubleshooting
1. Pivot the Control Panel Assembly out from the
oven. (See
Control Panel Removal
.)
2. To gain better access to components, remove
the wires that plug into the large relays on the
Relay Board.
(See
Relay Board
.)
Cut the wire tie
that the Smart Board CN103 wire harness (See
Smart Board
.) is routed through.
3. Is the inoperative relay stuck closed.
• If yes, go to step 8.
• If no, go to step 4.
4. Check voltage between Relay Board CN01 pins
2 and 4.
• If 12 VDC is not present, see
Smart Board
,
troubleshooting step 9
.
• If 12 VDC is present, go to step 5.
5. Is inoperative relay energizing a heat source.
• If no, go to step 7.
• If yes, go to step 6.
6. Check voltage between Relay Board CN01 pins
4 and 28.
• If 12 VDC is present, replace Smart Board.
• If 5 VDC is present, continue to next step.
7. Locate the inoperative relay in the relay chart
below. Check voltage between inoperative relay
pin and Relay Board CN01 pin 4.
• If 5 VDC is present, replace Replace Relay
Board.
• If 5 VDC is not present, replace Smart Board.
Note:
For situations where the above-mentioned 5
VDC is not present, some relays operate loads that
can be controlled by the consumer from the Glass
Touch Assembly. If the inoperative relay is such,
make sure the option is selected at the key panel. If
it is, and the relay is still inoperative, check harness
between Glass Touch Assembly and Smart Board.
If harness is OK, replace Glass Touch Assembly and
Smart Board.
Relay Chart
Relay
Relay Board
Connector
Cavity Light Relay
CN01 pin 7
Cooktop Lamp Bright Relay
CN01 pin 8
Cooktop Lamp Night Relay
CN01 pin 9
Turntable Motor Relay
CN01 pin 10
Damper Motor Relay
CN01 pin 11
Convection Motor Relay
CN01 pin 12
Magnetron Fan Motor and Stirrer
Motor Relay
CN01 pin 13
Ventilation Fan High Relay
CN01 pin 14
Ventilation Fan Medium Relay
CN01 pin 15
Ventilation Fan Low Relay
CN01 pin 16
Upper Heater Halogen Relay
CN01 pin 20
Upper Heater Ceramic Relay
CN01 pin 22
Lower Heater
Relay
CN01 pin 24
Convection Heater
Relay
CN01 pin 25
High Voltage
CN01 pin 27
8. Locate the stuck relay in the chart above. Check
voltage between inoperative relay pin and Relay
Board CN01 pin 4.
• If 5 VDC is present, replace Replace Smart
Board.
• If 5 VDC is not present, replace Relay Board.
(
Continued Next Page
)