1.
Remove the semi-rigid cables from the samplers.
2.
Remove the in-line attenuators from the samplers.
3.
Remove all flexible cables from the frequency converter by gently pulling on the gold connector.
4.
Unplug the ribbon cable near the front panel.
5.
Unplug the harnessed (multi-colored) wire and socket assemblies.
6.
Remove the four (4) frequency converter mounting plate screws and the frequency converter
bracket screw that fastens the frequency converter to the chassis. Lift the frequency converter out
of the test set.
7.
Remove the frequency converter bracket by removing the two (2) pozidriv screws before sending
the frequency converter in for repair.
NOTE:
Torque all SMA connections to 56 N-cm (5 in.-lb) with the
torque wrench.
1.
Remove the frequency converter (4) from the test set.
2.
Remove the heat sink from the
by removing the eight (8) screws that hold it to the VTO.
3.
Remove the two (2) sampler mounting screws from the opposite ends of the sampler. Loosen the
nut connecting the
to the sampler and remove the sampler.
1.
Remove the frequency converter (4) from the test set.
2.
Remove the 2 sampler mounting screws from each sampler. (The
heat sink may need to be
removed for access.)
3.
Loosen the nuts connecting the
to each sampler, disconnect the samplers and remove the
assembly.
4.
Remove the two (2)
mounting bracket screws to separate the bracket from the
before
returning the
to HP for repair.
Unplug the transformer socket from the regulator board.
2.
Remove the three (3) mounting screws from the top edge of the regulator board. (It may be
necessary to disconnect some semi-rigid cables to ease removal of the screws.)
3.
Remove the regulator board. (It may be necessary to partially back out one of the transformer
mounting screws for clearance.)
HP
Test
Test
Troubleshooting
5-11