GE JVM1790CK01 Service Manual page 32

(2) CHECKOUT PROCEDURES FOR RELAY.
FAN motor and oven lamp turn on without touching
START key when the door is closed.
NO
GOOD
- PROBLEM (A) -
Remove the mate connector of I/O
CON from the circuit board.
Does the unit still operate?
NO
Replace the
circuit board
YES
YES
Defective
RELAY1
Replace
RELAY1
FAN motor and oven lamp turn on When the door is
YES
GOOD
7-20
- PROBLEM (B) -
closed and START key is touched.
Replace the
circuit board
NO