Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 173
Re-run the counter self test
Even if you ran the self-test previously, after reseating the boards the self-test
should be run again. (Refer to page 169 .)
After diagnosing an error or problem and isolating the failure to an assembly,
refer to Chapter 3, "Replacing Assemblies" in this service guide for assembly
removal and replacement procedures.
After replacing an assembly, perform the calibration procedures in this chapter.
DO NOT swap the motherboard, the processor board, or the front panel
board from one instrument to another. These boards contain model number
and serial number information that uniquely identifies a specific unit, and
boards that are mismatched to the instrument may result in problems with
its performance, licensing, serviceability, importability/exportability or
warranty. It is also likely that unpredictable error messages could occur.
(See “Error Messages” on page 174.)
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