Agilent Technologies 8564EC Service Manual page 459

RF Section
Troubleshooting Using the Diagnostic Software
Table 12-1 Procedures To Use For Isolating Faults
Suspected Faulty Circuit
2nd IF Amplifier
2nd IF Distribution
10.7 MHz IF Out of Double Balanced Mixer
300 MHz CAL OUTPUT
A7 LO Multiplier and Distribution Amplifier
A8 Low Band Mixer
A9 Input Attenuator
A13 Second Converter
A13J2 INT 2nd IF
A14 Latch
A15 Control Latches
A15J601 10.7 MHz
External 10 MHz Reference Operation
Gain of Flatness Compensation Amplifier
INT 10 MHz Reference Operation
LO Feedthrough
LO Power
PIN Switches in SIG ID Oscillator (Opt 008)
Second Converter Control
SIG ID Oscillator (Opt 008)
SIG ID Oscillator Operation (Opt 008)
Third Converter
Use of an active probe, such as an 85024A, with another spectrum
CAUTION
analyzer is recommended for troubleshooting the RF circuitry. If an
1120A Active Probe is being used with a spectrum analyzer, such as the
8566A/B, 8569A/B and the 8562A/B, having dc coupled inputs, either
set the active probe for an ac coupled output or use a dc blocking
capacitor (11240B) between the active probe and the spectrum analyzer
input. Failure to do this can result in damage to the spectrum analyzer
or to the probe.
598
Manual Procedure to Perform
Third Converter
Third Converter
Third Converter
8. Calibrator Amplitude Adjustment
Chapter 3
A7 LO Multiplier and Distribution
Amplifier
A8 Low Band Mixer
A9 Input Attenuator
A13 Second Converter
A13 Second Converter (steps 1 to 6)
Control Latch for Band-Switch Drivers
Control Latch for Band-Switch Drivers
Third Converter
10 MHz Reference
(steps 5 to 11)
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 (Option 008)
A13 Second Converter
Signal ID Oscillator Adjustment in
Chapter 3
SIG ID Oscillator (Option
Low and High Band Problems
in
008))
(step 10)
Chapter 12