46 Chapter 3 Disassembly/Assembly Procedures and Parts List
5. For easier removal of the AC Converter assembly, you may wish to
unplug and lay aside both the blue and grey fiber optic cables
connecting the A/D Converter and Inguard Logic assembly to the
outguard.
6. Remove the pushrod from the Guard switch. You may need to pry the
pushrod loose with a small flat blade screwdriver. Then completely
remove it from the rear of the front panel.
7. Use the #TX10 Torx driver to remove the four screws from the
AC Converter assembly.
8. Unplug and remove the AC Converter board from the inguard chassis.
Installation Procedure 1. Line up the AC Converter board with the connector in the inguard
chassis. Then plug the board all the way into the connector.
2. Use the #TX 10 Torx driver to install the four screws on the
AC Converter assembly.
3. Locate the grey 20-pin cable connected to the Inguard Power Supply
assembly. Line up the cable plug with the socket on the
AC Converter assembly. Then plug the cable all the way in.
4. Plug the black striped white wire from the AC Converter into the
metal inguard chassis.
5. Plug in both the blue and grey fiber optic cables into the A/D
Converter and Inguard Logic assembly, if previously unplugged.
6. Guide the Guard switch pushrod through the rear of the front panel's
access hole. Then align the pushrod with the Guard switch shaft and
push it all the way onto the shaft.
7. Use the Covers Installation Procedure in this section of the manual to
install the 3458A bottom cover and bottom shield.
A/D Converter
Assembly
Removal/Installation
Procedures
The following procedures show how to remove and install the A/D Converter
and Inguard Logic Printed Circuit Board Assembly.
Refer to Figure 16 for the following procedures.
Removal Procedure 1. Use the Covers Removal Procedure in this section of the manual to
remove the 3458A bottom cover and bottom shield. It is not necessary
to remove the top cover and top shield.
2. Set the 3458A on your workbench with the bottom facing you.
3. Locate the grey 20-pin cable that connects the A/D Converter and
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