Disassembly/Assembly Procedures and Parts List 3
Keysight 3458A Assembly-Level Repair Manual 75
Installation procedure
1 Line up the DC Circuitry board with the connector in the inguard chassis. Plug
the board into the connector.
2 Use the #TX10 Torx driver to install the eight screws on the DC Circuitry
assembly.
3 Use the #TX10 Torx driver to install the two screws on the DC Reference
assembly.
4 Plug in the following wires and cables:
a Locate the blue wire connected to the power transformer. Plug the wire
into the metal Inguard shield.
b Locate the gray wire connected to the power transformer. Plug the wire
into the metal inguard circuit ground.
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