148 Power Amplifier Fault Finding TB8100 Service Manual© Tait Electronics Limited September 20068.8 Control BoardThese checks will verify that:■ the PA powers up and transmits without raising any alarms■ the DC supply voltages are correct■ the correct voltage levels are present at selected test points.Figure 8.10 on page 153 shows the location of the test points on the controlboard. Refer also to Table 8.1 on page 154 for a list of test points and theirassociated voltage levels.The recommended test equipment set-up is shown in Figure 8.8 onpage 149 (28V PA) and Figure 8.9 on page 150 (12V PA).Note If the reciter is fitted with a TaitNet RS-232 system interfaceboard, connect the PC directly to the reciter (refer to Figure 3.2on page 73).Note If the reciter is fitted with a TaitNet Ethernet system interfaceboard, and the PC is connected to the control panel, run the Serv-ice Kit and connect to the base station, then power up the base sta-tion. Refer to TN-1142-AN for full Ethernet connection details.
