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RSU-503 Redundancy Switch Unit Installation ... - Comtech EF Data

RSU-503 Redundancy Switch Unit Installation ... - Comtech EF Data

4.1 Internal

4.1 Internal Switches This chapter provides information on the following: • Internal switches, indicators, and connections • How to service the switch with the power on • Troubleshooting 4Chapter 4. MAINTENANCE Note: Under normal conditions, this switch does not require periodic or preventive maintenance. Most problems, if any, will arise during the initial installation. These problems will most often be due to improper cabling, waveguide wiring, or indicator positions. The switch does not have any external switches or controls. The internal switches (shown in Figure 4-1) are not normally used by the operator. However, if the switch must be opened, descriptions of the four push-button switches are provided in the following table. Switch Description UL AUTO/MAN Depress to alternate between Uplink Auto and Manual. UL A/B ONLINE Depress to alternate between A and B uplink online. DL AUTO/MAN Depress to alternate between downlink Auto and Manual. DL A/B ONLINE Depress to alternate between A and B downlink online. Rev. 8 4–1

Maintenance RSU-503 Redundancy Switch Unit 4.2 Internal Indicators The switch does not have any external indicators. The internal indicators (shown in Figure 4-1) are not normally used by the operator. However, if the switch must be opened, descriptions of the indicators are provided in the following table. Indicator LED Cause System Status PWR A Green Illuminates if RFT A power is available. PWR B Green Illuminates if RFT B power is available. 32V Green Illuminates when power available to switches. SUM FLT Red Illuminates an ambiguity failure, RFT fault, or power supply fault. Uplink FLT A Red Illuminates with failure of unit A uplink. FLT B Red Illuminates with failure of unit B uplink. FLT AMB Red Illuminates if uplink switch indicators do not agree. B OL Yellow Illuminates when unit B uplink is online. MAN Yellow Illuminates when uplink is in manual mode. Downlink FLT A Red Illuminates with failure of unit A downlink. FLT B Red Illuminates with failure of unit B downlink. FLT AMB Red Illuminates if downlink switch indicators do not agree. B OL Yellow Illuminates when unit B downlink is online. MAN Yellow Illuminates when downlink is in manual mode. Figure 4-1. LED and Switch Locations 4–2 Rev. 8

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