Anritsu Company Site Master S312D, Руководство по обслуживанию

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3-6 Removal of the Main PCB, Option 5 PCB, Spectrum Analyzer Assembly Removal and Replacement
3-6 PN: 10580-00195 Revision B S312D MM
3-6 Removal of the Main PCB, Option 5 PCB, Spectrum Analyzer
Assembly
1. Remove the 2 screws at the bottom of the main PCB, one screw in the center, and the 5-wire battery
cable. (Refer to
Figure 3-4 for locations.)
2. Disconnect the SMA cable at the Spectrum Analyzer RF In, and disconnect the wire that is plugged into
P5 near the RF Out connector.
3. Lift the main PCB about two inches out of the case and unplug the two cables that connect the spectrum
analyzer board to the main PCB.
4. The main PCB and spectrum analyzer assemblies are now separated.
5. The Option 5 PCB must be removed if the main PCB has failed, the spectrum analyzer has failed, or
Option 5 has failed. Unplug the 4-pin connector on the Option 5 PCB that connects to the front panel
(refer to
Figure 3-4 ). Remove the 3 screws holding the Option 5 PCB, and remove the PCB. It will be
transferred to the replacement main PCB. Recalibration is not required after the replacement of
Option 5.
6. The spectrum analyzer PCB can be removed from the case by removing the 4 screws and 3 standoffs that
are located around the edge of the PCB.
Figure 3-4. S312D Main PCB
Note Do not adjust any of the small screws that attach the RF shields of the PCB (Refer to
Figure 3-5
).