4.5 Maintenance
This radiotelephone equipment is designed and manufactured to provide years of intended performance. For this, a regular maintenance program should be established and should at least include the items listed in below:
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| Item | Check Point | Remedy/Remarks |
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| Whip antenna | Check for physical damage, corrosion and | Replace damaged parts. |
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| water leakage |
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| Wire antenna | Check that antenna is properly spanned | If necessary, |
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| and separated sufficiently apart from | antenna. |
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| metallic structures. |
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| Insulators for | Check for salt water accumulation on | Replace damaged insulators. | |
| antenna | insulators. | Remove salt water deposits. |
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| Clean with fresh water, then dry. |
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| Check that connection at | Remove rust, then tighten bolts |
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| is tight and | and lock nuts. Cover metallic |
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| surface with sealing compound. |
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| Antenna coupler | Check contact at | Tighten loosened connections. |
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| * Antenna terminal |
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| * Ground connection |
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| * Coaxial cable |
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| * Control cable(terminal board) |
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| Check that coupler lid and cable glands | Fasten lid firmly and evenly to |
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| are firmly secured. | prevent water leakage. |
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| Check for physical damage, corrosion and | Replace if damaged. |
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| salt water deposits. |
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| Transceiver | Check contact at | Tighten loosened connections; | |
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| * Antenna cable | remove foreign material from |
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| * Ground connection | connectors. |
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| * Power cable |
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| * Control cable |
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| Confirm that there are no objects on the |
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| top of the cabinet. | Remove objects to prevent |
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| overheating. |
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| Power Amp | Check contact at | Tighten loosened connections; | |
| Unit | * Coaxial cable | remove foreign material from |
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| * Antenna cable | connectors. |
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| (for 250 W set) | * Power cable |
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| Confirm that there are no objects on the |
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| top of the cabinet. | Remove objects to prevent |
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| overheating. |
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| Power supply | Check that supply voltage at transmission | If not within the range, call for | |
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| is within the rated range. (21.6 to 31.2 | service, Low voltage may cause |
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| VDC at the power connector) | erratic operation. |
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