(2) CHECKOUT PROCEDURES FOR RELAY.
- PROBLEM (A) -
Oven lamp turn on without touching START key
when the door is closed.
NO
YES
GOOD
Remove the mate connector of I/O CON from the circuit board.
Does the unit still operate?
NO
YES
Replace the circuit board
Defective
RELAY1
Replace
RELAY1
- PROBLEM (B) -
Oven lamp turn on When the door is closed and
START key is touched.
| YES |
|
| NO | |
|
|
|
|
|
|
|
|
|
|
|
|
GOOD | Measure the voltage at pin NO. | ||||
35 of U01 |
|
| |||
|
|
|
| ||
|
| Voltage reading: | |||
|
|
|
|
|
|
|
|
| NO |
| YES |
|
|
|
|
|
|
Replace the circuit board
Defective
RELAY1 or poor
connection of
RELAY1
Replace
RELAY1 or correct
the connection.