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Buffer Amplifier/
Sampler(A31)
Use the following procedure to remove/replace the Buffer Amplifier/
Sampler assemblies of all models.
Preliminary:
q
Remove the Power Amplifier assembly (see previous paragraph).
Procedure:
Step 1. Disconnect the semi-rigid coaxial lines, W83 and W84, from
the 20 dB pads that are part of the Buffer
Amplifier/Sampler assembly; see Figure 8-14. (For units
with Option 11, the semi-rigid coaxial lines are W46 and
W47.)
Step 2. Disconnect the cables from connectors J1 through J7 of the
A31 Buffer Amplifier/Sampler assembly. (Pull up gently to
disconnect.) Note that the connector end of each cable is
marked with the associated A31 connector number.
Step 3. Disconnect the two cable connectors from the TEST A con
-
nector body on the Buffer Amplifier/Sampler assembly (see
Figure 8-14). Similarly, disconnect the two cable connectors
from the REF A connector body.
REMOVE AND REPLACE TEST SET MODULE ASSEMBLIES
373XXA MM 8-27
Power Amp
In Cable
Power CableOutput Connector
Rigid Coax Line
A41 Power Amp Assy
P/O Buff Amp/Sampler (A31)
Figure 8-13. A41 Power Amplifier Assembly, Details