Transmitter Transfer Switchboard

Figure 5-28.-Signal Data converter, CV-3989/SP distribution systems. Organizational maintenance consists of corrective and preventive maintenance actions. Preventive maintenance is performed according to the maintenance requirement cards (MRCs). Shipboard personnel perform corrective maintenance (CM) according to the corrective maintenance sections of the applicable technical manuals and as reflected by the maintenance code assigned in the equipment APL. CM may require (1) removal or replacement of cabinet mounted piece parts; (2) replacement of components, assemblies, or sub-assemblies; or (3) repair of certain units, assemblies or sub-assemblies designated as “shipboard repairable.” It may then require “turn in” of depot repairable assemblies or sub-assemblies through prescribed supply procedures. All replaceable modules, assemblies, or printed circuit boards with a high-cost replacement value (except the CRT and high-voltage power supplies) are surface search radar or conventional radar display and designed and constructed to be repairable to component level replacement. TRANSMITTER TRANSFER SWITCHBOARD The Transmitter Transfer Switchboard SB-988/SRT allows the remote control station functions and signals to be transferred selective] y to the transmitters. Figure 5-29 shows a transfer switchboard that allows the functions and controls of any one, or all, of 10 remote control station functions and signals to be transferred selectively to any one of six transmitters. Each knob corresponds to a remote control station and has 8 operating positions. Positions 1 through 6 correspond to attached transmitters. The seventh position (x) allows for switching of the transmitters to another switchboard. The eighth position (OFF) removes the remote from the system. 5-17