n
Make a list of these assemblies.
n
Delete the following assemblies from your list as they have already been
verified earlier in this section.
A10 digital IF
All phase lock
Al2
reference
Al3
fractional-N analog
Al4
fractional-N digital
A19 graphics processor
4.
Switch off the analyzer.
5.
of
those assemblies that are left on the list, remove or disconnect them
from the analyzer one at a time.
lbble
5-4 shows the best order in which to
remove them, sorting them from most to least accessible. lhble 5-4 also lists
any associated assemblies that are supplied by the assembly that is being
removed. After each assembly is removed or disconnected, switch on the
analyzer
and observe the
LEDs.
Note
w
When extensive disassembly is required, refer to Chapter 14,
“Assembly Replacement and Post-Repair Procedures.
n
H
Refer to Chapter 13, “Replaceable Parts”, to identify specific
cables and assemblies that are not shown in this chapter.
q
If all the
LEDs
light, the assembly (or one receiving power from it) that allows
them to light is faulty.
q
If the
LEDs
are still not on steadily, continue to “Inspect the Motherboard”.
Power Supply Troubleshooting
5-17
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