Chapter 3 189
Assembly Replacement
Procedure 8. A7 through A13 Assemblies
Procedure 8. A7 through A13 Assemblies
A separate replacement procedure is supplied for each assembly listed
below. Before beginning a procedure, do the following:
CAUTION Turn off the spectrum analyzer power when replacing any of the
following assemblies. Failure to turn off the power may result in
damage to the assembly being removed.
Fold out the A14 and A15 assemblies as described in "Procedure 9.
A14 and A15 assemblies."
If the A11 YTO or A10 tracking generator (Option 002) assembly is
being removed, also fold down the A2, A3, A4, and A5 assemblies as
described in "Procedure 5. A2, A3, A4, and A5 assemblies."
— A7 First LO Distribution Amplifier
— A8 Low Band Mixer
— A9 Input Attenuator
— A10 Tracking Generator (Option 002)
— A11 YTO
— A13 Second Converter
Figure 3-20 on page 190 illustrates the location of the assemblies and
Figure 3-21 on page 191 provides the colors and locations of the
assembly bias wires.
NOTE Use a torque wrench (HP part number 8710-1655) to tighten all SMA
connectors to 113 Ncm (10 in-lb). The style of the torque wrench may
vary, but in all cases do not tighten the connectors beyond the point at
which the torque wrench "clicks" or "breaks-away."
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