After Repairing; Before Replacing The Printed Wiring Board - Sharp AX-1500J Service Manual

7. Reconnect the high voltage wire to the magnetron terminal after discharging.
WARNING: Use the pliers that the portions of their handles are insulated completely to avoid an electric shock.
8. Reconnect all leads removed from components during testing.
9. Reinstall the outer case and the back plate assembly.
10.Reconnect the power supply cord after the outer case and the back plate assembly are installed.
11.Run the oven and check all function.

[3] After repairing

1. Reconnect all leads removed from components during testing.
2. Reinstall the outer case (cabinet) and the back plate assembly.
3. Reconnect the power supply cord after the outer case and the back plate assembly are installed.
4. Run the oven and check all functions.
Super-Steam ovens should not be run empty. To test for the presence of microwave energy within a cavity, place a cup of cold water on the ceramic
oven floor, close the door and set the power to 100% and set the microwave timer for two (2) minutes. When the two minutes has elapsed (timer at
zero) carefully check that the water is now hot. If the water remains cold carry out Before Servicing procedure and re-examine the connections to the
component being tested.
When all service work is completed and the oven is fully assembled, the microwave power output should be checked and microwave leakage test
should be carried out.

[4] Before replacing the Printed Wiring Board

Some normal boards are found in board units that have been returned due to oven failure. So, most of board replacements may arise from poor har-
ness connection. Accordingly, before replacing any board that was judged to require its replacement, use the following procedure to re-check that the
connection terminal of a connector has been properly inserted:
1. When the connectors have been incorrectly inserted to the control unit.
PWB CONNECTOR
CONTROL UNIT CN-A
CN-B
CN-C
CN-D
CN-E
CN-G
2. When latch switch adjustment is incorrect
When latch switch adjustment is incorrect, symptoms such as no heating, no heating start, no activation even with start button pressed, etc. will occur.
The oven cannot be powered on.
No heating can be done (even if the door or thermistor has not been opened). No cooling fan runs.
No super steam heater operates.
No indication, no key insertion and no buzzer sound.
The oven cannot be powered on, no fan motor runs and no oven lamp illuminate.
No heating can be done. (AH sensor error)
2 – 2
Symptom
AX1500J(S)