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RS2100005 Rev 0
26
Troubleshooting Procedures
Display does not count
down when START is
pressed.
Measure resistance
of CN2 between pin
1 and pin 3 with door
closed.
Is continuity
indicated.
Verify proper
connection of
ribbon
connector.
Adjust or
replace door
sensing
switch.
NO
YES
Unit operates.
Does ribbon
connector
have proper
connection.
Replace
circuit
board.
Reconnect
ribbon connector
for proper
connection.
YES
NO
No buzzer sound when
pressing control pad
between stages or at the
end of cooking.
Verify normal
operation of circuit
board.
Replace
circuit board.
Unit operates.