2Service
172 Keysight 53210A/53220A/53230A Assembly Level Service Guide
If the firmware is up-to-date and errors are still being reported, then continue with
the following procedure. Refer as necessary to “Error Messages” on page 174.
Reseat the boards
Power off the unit, disconnect the power cord, and remove the cover. Re-seat the
processor board, and the main board. Reinstall the cover, reconnect the power
cord and power up the unit. Look for any errors still being reported after
power-on.
If the counter’s firmware version code is 01.07 or 01.08, then perform the
procedures in this section or contact Keysight Technologies about obtaining a
firmware upgrade. (Refer to “Obtaining repair service (worldwide)” on page 105.)
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