Table 4-2 Maintenance (con’t)
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| Item | Check Point | Remedy/Remarks |
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| Power cable | Check for loosened or corroded connection | Clean and tighten. |
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| at power terminals. |
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| Battery | Check that the battery is fully charged. | If discharged, charge. |
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| Feeder (coax | Check for physical damage. | Replace if damaged. |
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| cable, control |
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| cable) |
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| PCB | Check that jumper cables between boards | Reconnect loosened |
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| connection | are firmly connected. | connections of jumper |
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| cables. |
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| Microphone | Check that jumper cables between boards | Fasten if loosened. |
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| are firmly connected. |
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