AR 10046249, Руководство по эксплуатации и обслуживанию, Страница: 49 / 58

Model 150/150AW1000
Rev C 29
4.3.9 Lo Band Amplifier Fault (Schematic 10046147, 10039874)
1. The fault output of the A2 module is sensed on A3A12, J5, pin 26.
2. Verify the correct voltages to the modules. Troubleshoot any incorrect voltages.
FL1 = +32 ± 0.2V
FL4 = +15 ± 0.2V
FL5 = -15 ± 0.2V
4.3.10 Hi Band Amplifier Fault (Schematic 10046147, 10045396)
1. The fault output of the A4, A6 and A7 modules is sensed on A12A3, J5, pins 23 thru 25.
2. Verify the correct voltages to the modules. Troubleshoot any incorrect voltages.
C50
+24.0 V
±
0.3 V
C51 –15.0 V
±
0.3 V
4.3.11 Lo Band Low or No Power Output (DC Tests) (Schematic
10046147)
All indicators on the Model 150/150AW1000 are normal, the front panel touch screen reads Power On , and
the cooling fans (B1, B2 and B3) are operating.
1. Check the position of the RF Gain control—is it set to maximum gain?
2. Check the RF input to the unit—is it the correct amplitude and frequency?
3. Check the RF output connection from the unit—is it correctly connected to the load?
Is the coaxial cable okay?
4. Check the following voltages on the Power Supply. If any of the voltages are out of tolerance, correct them
before further troubleshooting.
PS1 J1 Pin 1 +15 V
± 0.2 V
PS1 J1 Pin 13 -15 V ± 0.2 V
5. Check the voltage on the feed thru caps of the A2 Module. Troubleshoot any incorrect voltage.
FL1
+32 V
±
0.2 V
FL4 +15 V
±
0.2 V
FL5 -15 V ± 0.2 V
6. Check the voltage on the feed thru caps of the A1 Pre-Amp, with the RF gain control at maximum gain.
Troubleshoot any incorrect voltages.
FL2
+24 V ± 0.5 V
FL3 -15 V ± 0.5 V
FL4 +4.7 V
±
0.5 V