Chapter 10 519
Synthesizer Section
Troubleshooting Using the TAM
A15J200 OFL error voltage MS6
Negative 10 volt supply MS8
Offset lock loop BW DAC MS5,MS7,MS8
A15J400 Positive 15 volt supply MS2
Offset lock RF buffer MS4
IF AMP/limiter bias MS6
Offset lock loop buffer D MS7
Offset lock loop buffer C MS8
Sampler bias test MS3
A15J502 Positive 15 volt supply MS2
Third LO tune voltage MS3
Offset lock loop buffer MS4
600 MHz oscillator bias MS5
Calibrator AGC amp bias MS6
Calibrator ampl adj MS7
3rd LO driver amp MS1, MS8
A15J602 Positive 15 volt supply MS8
Flatness compensation 3 MS2
Flatness compensation 2 MS5
Flatness compensation 1 MS6
SIG ID collector bias (Option 008) MS7
RF gain control test MS1, MS3
A15J901 Revision MS3
External mixer switch MS1, MS8
Signal ID switch (Option 008) MS5, MS6
Ten volt reference MS4
External mixer bias MS7
* Only on A14 assemblies with part numbers 08560-60059,
08560-69059, 08560-60062, 08560-69062.
Table 10-5 TAM Tests versus Test Connectors
Connector
Manual Probe
Troubleshooting Test
Measured Signal
Lines
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