Agilent Technologies 856290216 service manual Automatic Fault Isolation References

Table 12-1. Automatic Fault Isolation References

Suspected Circuit Indicated by Automatic Fault Isolation

Check 2nd IF Amplifier

Check 2nd IF Distribution

Check 10.7 MHz IF Out of Double Balanced Mixer Check 300 MHz CAL OUTPUT

Check A7 First LO Distribution Amplifier Check A8 Low Band Mixer

Check A9 Input Attenuator

Check Al3 Second Converter

Check A13J2 INT 2nd IF

Check Al4 Latch

Check Al5 Control Latches

Check A15J601 10.7 MHz

Check External 10 MHz Reference Operation Check Gain of Flatness Compensation Amplifier Check INT 10 MHz Reference Operation Check LO Feedthrough

Check LO Power

Check PIN Switches in SIG ID Oscillator (Opt 008) Check Second Converter Control

Check SIG ID Oscillator (Opt 008)

Check SIG ID Oscillator Operation (Opt 008) Check Third Converter

Manual Procedure to Perform

Third Converter

Third Converter

Third Converter

Calibrator Amplitude Adjustment in Chapter 2 A7 SLODA (Switched LO Distribution Amplifier) A8 Low Band Mixer

A9 Input Attenuator

Al3 Second Converter

Al3 Second Converter (steps 1 to 6) Control Latch for Band-Switch Driver Control Latches

Third Converter Output

10 MHz Reference (steps 5 to il) Third Converter

10 MHz Reference (steps 1 to 4) Low Band Problems (steps 1 to 3)

Low and High Band Problems (steps 4 to 9) SIG ID Oscillator (Opt 008 Only)

Al3 Second Converter

Signal ID Oscillator Adjustment in Chapter 2 SIG ID Oscillator (Opt 008 Only)

Low and High Band Problems (step IO)

RF Section 12-3