| Step |
Check description |
Assumed cause |
Assumed cause |
| 1 |
Measuring the input voltage |
The power cord has no continuity. |
Plug the power cord into another wall outlet. |
| 2 |
Checking the power cord |
The power plug of the power cord is faulty |
If the power plug is deformed or faulty, replace the power cord. |
| 3 |
Checking the power cord |
The power cord is faulty. |
If there is no continuity of the power cord, replace the power cord. |
| 4 |
Checking the main power switch |
The main power switch is faulty. |
Check the continuity between the contacts of the main power switch, and replace the main power switch if there is no continuity. |
| 5 |
Checking the low voltage PWB |
The connector is not connected properly. The wire or the PWB is faulty. |
Clean the terminal of the connectors on the low voltage PWB, then reconnect the wire connector. If the wire is faulty, repair or replace it. If not repaired, replace the low voltage PWB. |
| 6 |
Replacing the power switch |
The power switch is faulty. |
Check the power switch. Replace it if there is no continuity. |
| 7 |
Checking the main PWB |
The connector or FFC terminal is not connected properly. Or, the wire, FFC, PWB is faulty. |
Clean the terminal of the connectors on the main PWB, then reconnect the wire connector and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace it. If not repaired, replace the main PWB. |
| 8 |
Checking the engine PWB |
The connector or FFC terminal is not connected properly. Or, the wire, FFC, PWB is faulty. |
Clean the terminal of the connectors on the engine PWB, reconnect the connector of the wire, and reconnect the FFC terminal. If the wire or the FFC is faulty, repair or replace it. If not resolved, replace the engine PWB. |