Troubleshooting Diagram For Gsm900 Receiver - Nokia RM-512 Service Manual

RM-512; RM-513; RM-514; RM-515; RM-543
RF Troubleshooting Instructions

Troubleshooting diagram for GSM900 receiver

Troubleshooting flow
Figure 38 GSM900 receiver troubleshooting
Results
By measuring with an oscilloscope at RXIP or RXQP on a working GSM900 receiver this picture should be seen.
Signal amplitude peak-peak 108mV. DC offset 1.0V.
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