Philips 50 T Series, Service Manual

Page: 74 / 105

Receiver Preamplifier Test
Chapter 8 - RF Bench Repair
Receiver Preamplifier Test
1. Open the Receiver housing.
2. Remove the antenna from the rear BNC connector.
3. Unplug the BNC cable between the Preamplifier and the Receiver
assembly at the Preamplifier BNC connector.
4. Switch on the Receiver. The green LED on the Preamplifier Board
should be lit.
5. Connect the RF Generator output to the Receiver’s antenna input with
a BNC cable.
Figure 21 Receiver Preamplifier Test
6. Set the following on the Signal Generator:
Frequency 450 MHz
Level -40 dBm