9.TROUBLESHOOTING OF THE CONTROL PANEL
■Nothing is displayed on the LCD.
<User Check>
- Verify if the power switch is turned off.
Step | Possible cause | Check | Result | Remedy |
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| Connection | Are the main PCB and |
| Reconnect the connector |
1 | between main | control panel PCB | No | properly. |
PCB and control | connected properly? |
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| panel PCB |
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| Harness | Is the harness |
| Replace the harness with a |
2 | between main | damaged? | Yes | normal one. |
PCB and control |
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| panel PCB |
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| Connection | Are the main PCB and |
| Reconnect the connector |
3 | between main | PS PCB unit connected | No | properly. |
PCB and PS | properly? |
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| PCB unit |
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| Harness | Is the harness |
| Replace the harness with a |
4 | between main | damaged? | Yes | normal one. |
PCB and PS |
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| PCB unit |
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5 | LCD | Is the problem solved | Yes | Replace the LCD. |
| after replacing the LCD? |
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| Control panel | Is the problem solved |
| Replace the control panel |
6 | PCB | after replacing the | Yes | PCB. |
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| control panel PCB? |
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| PS PCB unit | Is the problem solved |
| Replace the PS PCB unit. |
7 |
| after replacing the PS | Yes |
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| PCB unit? |
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| Main PCB | Is the problem solved |
| Replace the main PCB |
8 |
| after replacing the main | Yes | ASSY. |
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| PCB ASSY? |
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Confidential |