MLS MLSH041 Manual de instalación descargar pdf (Pagina 11)

ALIGNMENT AND TROUBLESHOOTING PROCEDURES

LBI-38438A 11

5 ALIGNMENT AND TROUBLESHOOTING PROCEDURES

Radio maintenance is facilitated by using the Troubleshooting Procedures and servicing

techniques unique to this radio. The Troubleshooting Procedures are designed to lead the

serviceman rapidly to the defective component or circuit.

Troubleshooting procedures are provided for most major problems that might arise in the

Transmitter, the Receiver, and the System Control/Synthesizer Board.

5.1 SYNTHESIZER

Alignment and Troubleshooting for Synthesizer Circuitry on System Control/Synthesizer

Board CMC-551A/B are detailed in the following subsections.

5.1.1 Test Equipment Required

1. Audio Oscillator

2. Deviation Monitor

3. Oscilloscope

4. Frequency Counter

5. RF Wattmeter (50 ohms, 100 W)

6. VTVM

7. Digital Voltmeter

8. Power Supply, 13.6 VDC regulated.

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MLS MLSH041 Manual de instalación Pagina 11