88 5000 Series Oscilloscopes Service Guide
5 Replacing Assemblies
Using a needle nose pliers, carefully remove the two break
away tabs connecting the two boards.
b Carefully turn the softkey board so that the gold metal
contacts face the keypad. Note the way the ribbon cable is
dressed in the previous figure.
c Align the main keypad board over the keypad inserting the
knob shafts into their holes.
d Snap the main keypad board in place by pressing on the
encoders near each latch. Ensure all 8 catch.
e Align the slots in the softkey board over the retaining tabs.
f Push down on the softkey board. Using a tool (such as a
soldering aid) in the notch of the board, slide it to the right
until it seats between the tabs.
g Replace the knobs by supporting the back of each encoder
and pushing the knob fully onto the shaft.
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