7-68 Keysight N5244A/45A Service Guide
Repair and Replacement Procedures
Removing and Replacing the A64 Tuner
7-
Removing and Replacing the A64 Tuner
Tools Required
T-6 TORX driver (set to 4 in-lb)
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— 5/16 inch open-end torque wrench (set to 10 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to
for this procedure.
1.
Disconnect the power cord.
2.
Remove the outer cover. Refer to
“Removing the Covers” on page 7-7
3.
Position the analyzer bottom side up.
4.
The A64 tuner, the A56 port 1 noise bypass switch, and the bracket to
which they are attached, will be removed as a complete assembly.
5.
Disconnect two semirigid cables from the A64 tuner.
It may be necessary to disconnect or remove other cables to gain access.
If you do, make note of these cable connections for reconnection later.
6.
Disconnect the A64 tuner wire harness cable (item
①
) from the A23 test
set motherboard. Make note of the routing of this wire harness so that it
can be rerouted later in the same manner.
7.
Disconnect four semirigid cables from the A56 port 1 noise bypass switch.
It may be necessary to disconnect or remove other cables to gain access.
If you do, make note of these cable connections for reconnection later.
8.
Disconnect the A56 bypass switch wire harness cable (item
➁
) from the
A59 noise downconverter. Make note of the routing of this wire harness so
that it can be rerouted later in the same manner.
9.
Remove two screws (item
③
) that secure the bracket of the A64 tuner/A56
bypass switch assembly to the chassis.
10.
Move the disconnected semirigid cables out of the way and remove the
A64 tuner/A56 bypass switch assembly (with bracket) from the analyzer. It
may be necessary to loosen the other end of the cables to allow them to
be moved. Do not overbend them.
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables is necessary to remove the assembly. However, do not
over-bend the semirigid cables.
Содержание PNA-X N5244A
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Страница 90: ...3 62 Keysight N5244A 45A Service Guide Tests and Adjustments Adjustments 3 ...
Страница 146: ...4 56 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 4 4 ...
Страница 155: ...Keysight N5244A 45A Service Guide 5 9 Theory of Operation Synthesized Source Group Operation Figure 5 3 Source Group ...
Страница 174: ...5 28 Keysight N5244A 45A Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 6 4 Port Receiver Group ...
Страница 175: ...Keysight N5244A 45A Service Guide 5 29 Theory of Operation Receiver Group Operation Figure 5 7 2 Port Receiver Group ...
Страница 188: ...5 42 Keysight N5244A 45A Service Guide Theory of Operation Noise Measurement Group Operation Option 029 5 ...
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Страница 472: ...8 18 Keysight N5244A 45A Service Guide General Purpose Maintenance Procedures Correction Constants 8 ...
Страница 504: ...32 Keysight N5244A 45A Service Guide Index ...
Страница 505: ...Installation Note Xxxxx xxxxx 3 ...