Replacing Assemblies 3
Keysight 53210A/53220A/53230A Assembly Level Service Guide 187
To Remove the Internal DC Battery Assembly (Option 300)
1 Remove the cover and rear bezel from the counter as described previously.
2 Remove the two T20 TORX screws from the left hand side of the counter that
secure the battery to the frame.
3 Lift upwards on the two tabs holding the battery assembly on top of the left
side panel and slide the battery assembly off the three large tabs that hold it
against the AC Power Supply Assembly.
4 Without disconnecting the battery charging cable, carefully turn the battery
assembly over on its back and insert the three smaller tabs behind the large
tabs into the three slots in the assembly. (See Figure 3-3.)
5 Disconnect the Y-Cable (3 connectors) from the Option 300 Battery Assembly,
then disconnect the digital cable.
6 Remove the Battery Assembly. If the battery is to be replaced, remove the four
T10 TORX screws holding the battery cover.
7 Lift the battery and its cover free of the battery connector. Push the battery out
of the aluminum cover. Insert the new battery in the cover and re-install the
battery into the charging assembly.
8 Re-install the new battery and/or charging assembly into the counter by
reversing the above procedure. Be sure to re-connect the cables to the
assembly, digital cable first.
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