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Maintenance
. 4.
Use a Torx T-9 screwdriver to install the two screws that fasten the AA to the Main board.
5.
Plug the coaxial end-lead connectors into the input and the output of the AA. Care is necessary when
engaging these connectors. For best results, proceed as follows:
a.
Check that the center conductor is straight. Straighten
if
necessary.
b.
Plug the connector straight into the receptacle.
c.
Look through the slot in the outer receptacle, and watch the center conductor enter its receptacle as
you insert the connector.
Soldering Techniques
WARNING
To avoid electric-shock hazard, and amplifier damage disconnect the amplifier from the power
source before soldering.
The reliability and accuracy of this plug-in can be maintained only if proper soldering techniques are used
when repairing or replacing parts.
The desoldering and removing of parts is especially critical and should be done only with a vacuum solder
extractor; preferably, one approved by a Tektronix, Inc. Service Center.
To prevent damaging the pins, use an extracting tool to remove in-line integrated circuits. A tool is available
from Tektronix, Inc; order Tektronix part 003-0619-00.
If
an extracting tool is not available, use care to avoid
damaging the pins. Pull slowly and evenly on both ends of the integrated circuit.. Try to avoid disengaging one
end from the socket before the other end.
When removing multi-pin components, do not heat adjacent conductors consecutively (see Fig. 3-6). Allow a
moment for the circuit board to cool before proceeding to the next pin.
11A52 Extended Service Manual
3-15
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Table of Contents
Troubleshooting
