A3 Fractional-N/Reference Assembly Replacement; How To Remove The Fractional-N/Reference Assembly - Agilent Technologies 8711C Service Manual

A3 Fractional-N/Reference Assembly Replacement

he A3 fractional-N/reference assembly consists of the main 10 MHz reference board and a
fractional-N daughter board. hese are pretuned as a set; do
separately.
Before replacing any board, make sure the RCA phono cable plugs (items numbered 5, 6, 7, and
8 in able 7-5 of the \Parts List" chapter) are fully seated. If they are not seated, the board
may not t or it may generate spurs.
Figure 3-4 depicts an HP 8713C/14C. hough the HP 8711C/12C/30A analyzer's cable assemblies
are slightly di erent, the assembly/disassembly procedures are the same.
Insert artwork here.
Figure 3-4. Removing the Fractional-N/Reference Assembly
How to emove the Fractional-N/ eference Assembly
1. Disconnect the power cord.
2. Remove the front panel assembly (see \How to Remove the Front Panel Assembly").
Remove the handle nut plate on the right side only.
3. Disconnect, if present, any cable from the EX REF IN BNC connector on the rear panel.
4. Remove the nut and washer from the EX REF IN BNC connector on the rear panel.
5. Disconnect the two exible cables from the front of the assembly. See Figure 3-4.
6. Grasp the handle tab and pull forward to release the assembly. Once released, the assembly
will easily slide out of its cavity.
3-8 Assembly Replacement
not
attempt to order either board