3 Disassembly/Assembly Procedures and Parts List
96 Keysight 3458A Assembly-Level Repair Manual
8 Refer to Figure 3-17. With a small flat bladed screwdriver, lift up the Front
Panel assembly and unlock it from the chassis. Carefully move some more of
the Front Panel assembly's left side (as seen from the front of the instrument)
until free from the chassis. Then move the rest of the Front Panel assembly out
and away from the instrument as far as it can go. Note that the assembly can
only be moved a short distance, since the front terminals are still internally
connected to the instrument.
9 Turn the instrument so the front panel faces you.
10 Locate and unscrew (rotate counterclockwise) the current terminal binding
post until it stops. Push in on the terminal and rotate it clockwise. Then remove
the current terminal/fuse assembly.
11 Refer to Figure 3-19. Use the #TX10 Torx driver to remove the two Torx screws
from the front terminals. Then use a #1 Pozidriv screwdriver to remove the two
Pozidriv screws from the front terminals. This removes the front terminals from
the Front Panel assembly.
12 Completely remove the Front Panel assembly from the instrument.
13 Place the Front Panel assembly face down on a soft anti-static mat.
14 Refer to Figure 3-20. Use the #TX10 Torx driver to remove the single Torx
screw from the Display assembly.
15 Push the Display board toward the left (with input terminals at your right side)
as far as it can go. Then pull its bottom up and lift it out from the Front Panel
assembly.
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