■No bell ring.
Step | Possible cause | Check | Result | Remedy |
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1 | Ring delay | Ring delay is set to “0”. | Yes | Change the ring delay |
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| settings to another value. | ||
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2 | Ring volume | Ring volume is set to | Yes | Change the ring volume |
| “OFF”. | setting to another value. | ||
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| Connection | Are the main PCB and |
| Reconnect the connector |
3 | between main | NCU PCB connected | No | properly. |
PCB and NCU | properly? |
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| PCB |
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| Harness | Is the harness |
| Replace the harness with a |
4 | between main | damaged? | Yes | normal one. |
PCB and NCU |
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| PCB |
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| Speaker | Is the problem solved |
| Replace the Speaker. |
5 |
| after replacing the | Yes |
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| speaker? |
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| NCU PCB | Is the problem solved |
| Replace the NCU PCB |
6 |
| after replacing the NCU | Yes | ASSY. |
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| PCB ASSY? |
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| Main PCB | Is the problem solved |
| Replace the main PCB |
7 |
| after replacing the main | Yes | ASSY. |
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| PCB ASSY? |
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Confidential |