4 Retrofitting Options
226 Keysight 53210A/53220A/53230A Assembly Level Service Guide
28 If removed previously, re-install the Option 300 Internal Battery Assembly. Be
sure to re-connect the cables.
29 Re-install the cover by performing the cover removal procedure (Preliminary
Steps 1-4), in reverse.
30 Attach the supplied Option 106 or 115 label alongside the front panel type N
connector in the depression provided.