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Procedure 8.
A7 through Al3 Assemblies
A separate replacement procedure is supplied for each assembly listed below. Before beginning
a procedure, do the following:
n Fold out the Al4 and Al5 assemblies as described in “Procedure 9. Al4 and Al5
Assemblies.”
n If the All YTO or A10 assembly (SYTF or RYTHM) 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 YIG-Tuned Filter/Mixer (RYTHM)
All YTO
Al3 Second Converter
Figure 4-14 illustrates the location of assemblies and major cable locations.
Note
Use a torque wrench to tighten all SMA connectors to 113 Ncm (10 in-lb).
HP part number 8710-1655 can be used for this purpose. The style of 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.”
4-26 Assembly Replacement