3 Disassembly/Assembly Procedures and Parts List
102 Keysight 3458A Assembly-Level Repair Manual
4 Use the #TX10 Torx driver to remove the four screws from the Front/Rear
Terminals switch assembly.
5 On the Front/Rear Terminals switch assembly, note for future reference the
location of the wires connected to the assembly. These locations are also
shown in Figure 3-22. Then unplug and lay aside all wires from the assembly.
Installation procedure
1 Refer to Figure 3-22. Plug in all wires to the Front/Rear Terminals switch
assembly. Use the wire locations noted in the previous procedure.
2 Line up the mounting holes of the assembly with the standoffs on the inguard
chassis. Use the #TX10 Torx driver to install the four screws on the assembly.
3 Guide the Front/Rear Terminals switch pushrod through the rear of the front
panel's access hole. Then align the pushrod with the Front/Rear Terminals
switch shaft and push it all the way onto the shaft.
4 Use the Covers installation procedure in this section of the manual to install
the 3458A top cover and top shield.
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