Agilent Technologies HP 8719D Service Manual page 226

Power Not Within Specifications
Perform these power adjustments:
1. output power adjustments
2. blanking adjustments
If power holes exist, use the block diagram (located in "Start Troubleshooting
n
Here") and the location diagrams (in "Replaceable Parts") to check the cables
and connections in the RF path.
If power levels are incorrect (are not ~t3 dBm of setting) in only one or two
n
bands, go to "Band-Related Problems" located later in this chapter.
Broadband Phase Lock Problems
Phase lock problems can be caused by incorrect pretune correction constants.
1. Perform the source pretune correction constant procedure (service test 43,
see Chapter 3, "Adjustments and Correction Constants") to fix this potential
problem.
2. Then press (PRESET) PRESET: $&Z&E to see if the phase lock problem
persists.
3. If the phase lock problem persists, continue. It could be caused by a fault in
one of these source assemblies:
All phase lock
( HP 8722D Only)
7-6 Source Troubleshooting
Option 400 only)