WARNING
Avoid contact with the high-voltage circuits and the antenna terminal of the radio transmitter-receiverwhile performing trouble isolation procedures personal injury may result.
WARNING
The 650- and 1500-volts potentials at the power amplifier screen and plate electrodes are extremelydangerous. Avoid contact with these circuits.
WARNING
Place the POWER-LIGHTS switch to POWER OFF, disconnect the primary power source cable from thefront of RT-671/PRC-47, and discharge the plate circuit capacitors and high-voltage filter capacitors inthe power supply before proceeding with the following test. Personal injury or death can result fromthese dangerous voltages.
WARNING
Avoid contact with the high-voltage circuits of Signal Data translator CV-1377A/PRC-47 (A3), PowerSupply PP-3518/PRC-47 (A5). and in the power amplifier compartment. These voltages can causepersonal injury or death.
WARNING
Before removing any equipment cover or module from Radio Receiver-Transmitter RT-671/PRC-47,disconnect all power from the unit.
WARNING
High voltages are present in the circuits associated with Signal Data Translator CV-1377A/PRC-47,Power Supply PP-3518/PRC-47, and the power amplifier compartment. These voltages are dangerousand can cause personal injury or death. Ground the two high-voltage terminals on the main chassis (J1-A1 and J1-A2) to discharge the capacitors in the high voltage circuits before beginning maintenancewithin the chassis or inside any module.
WARNING
Before further disassembly, short-circuit connector pins P1-A1 and P1-A2 to ground to discharge thehigh-voltage filter capacitors. Personal injury or death can result from these voltages.
WARNING
High voltages are present on circuit components associated with the power amplifier stage. Thesevoltages are dangerous and can be fatal. Before beginning tube replacement, ground the two high-voltage terminals (J1-A1 and J1-A2) on the main chassis to discharge the filter capacitors in thisequipment.