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Step 7. Remove the Old Hardware and Cables
Remove the Old Cables (Refer to
1. Using a 5/16-inch wrench, remove the following cables in the order listed.
• W1 A12 source 20 to A22 switch splitter
• W3 A22 switch splitter to channel R1 fixed attenuator
• W4 A22 switch splitter to channel R2 fixed attenuator
• W7 Channel R1 fixed attenuator to A28 channel R1 mixer
• W8 Channel R2 fixed attenuator to A29 channel R2 mixer
Remove the Fixed Attenuators (Refer to
2. Cut the cable ties (item
3. Remove the attenuators (item
4. Remove the adhesive clamps (item
lifting. Scrape away any excess adhesive from the bracket.
Replace the A27 and A30 Mixers (Refer to
5. Disconnect all RF cables (item
6. Remove two RF cables (item
7. Remove four screws (item
later.
8. Remove the mixer bracket, with the mixers attached, from the analyzer. Observe the
below. Disconnect the ribbon cable to allow the mixer bracket to be removed.
CAUTION
Be careful not to damage the center pins of the semirigid cables. Some flexing of
CAUTION
the cables is necessary when removing the assemblies. Do not over-bend them.
9. Remove the old A27 and A30 mixers from the mixer bracket by removing three screws
from each, as shown in
10. Install the new A27 and A30 mixers using the screws removed from the old mixers. Be
sure to orient the mixers as shown in
11. Reconnect the ribbon cable and place the mixer bracket, with all four mixers attached,
into the analyzer. Observe the
12. Reinstall the four screws (item
13. Reconnect all RF cables (item
14
Figure
7.)
Figure
x
).
y
) from the analyzer.
z
) by sliding a thin, sharp blade under the clamp and
Figure 7
{
) from the mixers.
|
) from the analyzer and retain for reinstallation later.
}
) from the mixer bracket. Retain the screws for reinstallation
Figure
8. Retain the screws to install the new mixers.
Figure
above.
CAUTION
}
) to secure the bracket.
|
) to the mixers.
7.)
and
Figure
8.)
8.
Installation Note E8362-90004
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