
8712ET/ES and 8714ET/ES Assembly Replacement
RF Network Analyzers A4 Source Assembly Replacement
Service Guide 3-11
A4 Source Assembly Replacement
NOTE The source board has a low frequency version (8712ET/ES) and high
frequency version (8714ET/ES); make sure you have the proper board.
CAUTION Perform the following only at an approved ESD workstation. See Figure 4-1
on page 4-3.
Removing the Source Assembly
1. Disconnect the power cord.
2. Remove the backplane cover by unscrewing the two hold-down screws and sliding the
cover off.
3. Remove the rear panel screw (SCREW 9 as indicated on the rear-panel label) located to
the right of the XA4J1 connector.
4. Remove the front panel assembly (see “Removing the Front Panel Assembly” on page
3-4). Remove the handle nut plate on the right side only.
5. Disconnect the four cables from the front of the source assembly. See Figure 3-5.
Figure 3-5. Cable Locations on the A4 Source Assembly
6. Grasp the handle tab and pull it forward to release the assembly. Once released, the
assembly will easily slide out of its cavity.
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