HP 8560A, Service Manual

Page: 401 / 450

Table 11-l. 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 1st LO Distribution Amplifier
Check A9 Input Attenuator
Check Al3 Second Converter
Check INT 2nd IF
Check Al5 Control Latches
Check 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 Switch
Check PIN Switches in SIG ID Oscillator
Check Second Converter Control
Check SIG ID Oscillator
Check SIG ID Oscillator Operation
Check Third Converter
Procedure to Perform
Third Converter
Third Converter
Third Converter
Calibrator Amplitude Adjustment in Chapter 2
A7 LODA (LO Distribution Amplifier)
A9 Input Attenuator
A13 Second Converter
Al3 Second Converter
(steps 1 to 6)
Control Latches
Third Converter Output
10 MHz Reference
(steps 5 to
Third Converter
10 MHz Reference
(steps 1 to 4
)
Low Band Problems (1 to 2.9
(steps 1 to 3,
Low Band Problems
(steps 4 to 9)
PIN Switch
SIG ID Oscillator
Al3 Second Converter
Signal ID Oscillator Adjustment in Chapter 2
SIG ID Oscillator
Low Band Problems
(step
RF Section 11-3