86 5000 Series Oscilloscopes Service Guide
5 Replacing Assemblies
To remove the keyboard assembly
1 Perform the following procedures:
• “To remove the cabinet” on page 80
• “To remove the front panel assembly” on page 83
2 If removing the softkey pad only skip steps 3, 4c, and 4d
below.
3 Remove all of the knobs by pulling them straight out. You may
need to use a flat-blade screwdriver to gently pry them as you
pull.
Using a twisting motion rather than prying prevents marking
or damaging the front panel.
4 Remove the main keyboard and softkey board as follows.
a Lift the left end of the softkey board enough to clear the
tab holding it in place.
b Slide the softkey board to the left to release it from the
retaining tabs.
c Release the 8 latches holding the main keypad board to the
front panel.
d You will notice the latches do not all face the same
direction. This is shown with arrows in the following
figure.
e Lift the board up just enough to clear the latches.
f Lift both boards out being careful not to damage the
ribbon cable between them.
5 Remove and replace keypads as needed.
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