3 Disassembly/Assembly Procedures and Parts List
88 Keysight 3458A Assembly-Level Repair Manual
Installation procedure
1 Insert the Outguard Controller board into the slots in the chassis. Make sure
the board is as far as possible toward the front of the instrument.
2 Place the rest of the board into the instrument until it lays down flat in the
chassis. Then slide the board toward the rear of the instrument.
3 Use the #TX10 Torx driver to install the three screws on the Outguard
Controller assembly.
4 Locate the gray 20-pin cable connected to the Outguard Power Supply
assembly. Line up the cable plug with the socket on the Outguard Controller
assembly. Then plug the cable in.
5 Use the 7-millimeter nut driver to install the two hex standoffs on the rear
panel GPIB connector.
6 Use the Covers installation procedure in this section of the manual to install
the 3458A top cover.
Outguard power supply assembly removal/installation procedures
The following procedures show how to remove and install the Outguard Power
Supply Printed Circuit Board Assembly.
Refer to Figure 3-15 for the following procedures.
Removal procedure
1 Use the Covers removal procedure in this section of the manual to remove the
3458A bottom cover. It is not necessary to remove the top cover and the top/
bottom shields.
2 Set the 3458A on your workbench with the top facing you.
3 Pull the power switch pushrod off the ac power switch. You may need to pry
the pushrod loose with a small screwdriver. Then remove the pushrod by
pulling it out of the front panel from the rear.
4 Locate the gray 20-pin cable that connects the Outguard Power Supply
assembly to the Main Controller assembly. Unplug this cable at the Outguard
Power Supply assembly.
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