5-7 Function Key Membrane and Switch Pad Replacement Chapter 5 — Assembly Replacement
5-12 PN: 10580-00279 Rev. E MS272xC MM
5-7 Function Key Membrane and Switch Pad Replacement
This procedure provides instructions for replacing the function key membrane and switch pad.
1. Place the instrument face up on a protected work surface.
2. Remove the keypad bezel and membrane as described in Section 5-6 “Keypad Membrane and Main
Keypad PCB Replacement ”.
3. There are six locking tabs holding the function key bezel to the case. Using a small flat blade screwdriver,
carefully pry the function key bezel locking tabs free of the main body of the case. This will expose the
function key membrane.
4. Remove the function key membrane by gently pulling the membrane up and away from the front panel
(Figure 5-12).
5. Disconnect the function key flexible switch pad from J2 of the keypad PCB by carefully lifting the locking
tab on connector J2 to release the flexible switch pad (Figure 5-12).
6. Reverse the above steps to install the replacement switch pad or membrane.
• Carefully close the locking tab on connector J2 to secure the flexible switch pad connection. The
tab should “snap” into position when fully closed.
Note The function key membrane and switchplate can be replaced without opening the Spectrum Master.
Figure 5-12. Function Key Membrane and switch pad
Function Key Membrane
Function Key Switchpad
(Under the Membrane)
J2 Connector
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