Phase Lock Check with PLL DIAG
.............
7-36
Phase Lock Check by
Signal
Examination
..........
7-36
Source Group Troubleshooting Appendix
............
7-38
Troubleshooting Source Problems with the Analog Bus
.....
7-38
Phase Lock Diagnostic
Tools
.................
7-38
Phase Lock Error Messages
.................
7-38
Phase Lock Diagnostic Routines
...............
7-39
Broadband Power Problems
.................
7-39
8.
Receiver Troubleshooting
Assembly Replacement Sequence
................
8-2
Receiver Failure Error Messages
................
8-3
ChecktheAandBInputs
...................
8-4
Troubleshooting When
AU
Inputs Look Bad
...........
8-6
RunIntemalTests18and17
.................
8-6
Check
2nd
LO
........................
8-6
Checkthe4MHzREFSiiaI
..................
8-7
Check
A10
by Substitution or
SiiaI
Examination
.......
8-8
Troubleshooting When One or More Inputs Look Good
......
8-11
Checkthe4kHzSiial.
...................
8-11
Check the Trace with the Sampler Correction Constants Off
. .
8-12
Check
1st
I.0
Siial
at Sampler/Mixer
.............
8-14
Check 2nd LO Signal at Sampler/Mixer
............
8-14
9. Accessories Troubleshooting
Assembly Replacement Sequence
................
Inspect the Accessories
.....................
Inspect the
Test
Port Connectors and Calibration Devices
....
Inspect the Error Terms
....................
Cable Test
..........................
Verify Shorts and Opens
...................
9-2
9-3
9-3
9-3
9-5
9-6
10.
Service Key Menus and Error Messages
Service Key Menus.
......................
10-l
Error Messages
........................
10-l
Service Key Menus
.
Internal Diagnostics
............
lo-2
Tests Menu
.........................
10-3
Test
Options Menu
......................
lo-5
Self
Diagnose
Softkey
....................
lo.7
Test
Descriptions.
......................
lo-7
Internal Tests
.......................
lo-7
Contents-9