Replacing Assemblies 3
Keysight 53210A/53220A/53230A Assembly Level Service Guide 197
To remove the display assembly from the front panel
1 The following procedure removes the display assembly from the front panel.
2 Using a T8 TORX screwdriver, loosen the six T8 screws holding the plastic
cover over the rear of the display board. Carefully lift the cover off (leaving the
screws in their places) and set it aside.
3 The knob on the front panel is only pressed onto its rotor. It can be removed by
pulling gently on two sides.
4 Using a thin, non-sharp round tool, such as a folded-open metal paperclip, slip
one end of the clip under the bronze-colored ribbon cable passing through a
slot on the display board and connected to J202. Gently force the ribbon cable
end out of J202.
5 Remove the last T8 TORX screw holding the display board to the front panel
and carefully remove the display board.
6 To replace the display board with a new assembly, reverse the above
procedure. Be sure the ribbon cable is passed through the slot and gets
re-connected to J202.
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