3-10 Replacing The Function Key Keypad; Function Key Membrane And Switchpad Replacement - Anritsu Spectrum Master MS2723B Maintenance Manual

3-10 Replacing the Function Key Keypad

3-10 Replacing the Function Key Keypad
1. Disconnect the function key flexible switchpad from connector J2 of the keypad PCB by carefully lifting
the locking tab on connector J2 to release the flexible switchpad
Figure 3-11. Function Key Keypad and Connector J2
2. Remove the keypad PCB, taking care not to damage the speaker wires.
3. Reverse the above steps to install the replacement assembly, with the following cautions:
a. Carefully close the locking tab on connector J2 to secure the flexible switchpad connection. The tab
should "snap" into position when fully closed.
b. Insert the membrane over the keypad PCB, and under the speaker. Take care to properly orient
the membrane so that the rubber pins are aligned with the keypad switches on the PCB.
c. The speaker is held in place by four locating pins on the inside of the keypad bezel. Verify that the
four locating pins are properly seated into the four corner holes of the speaker when reinstalling
the bezel.
d. Verify that all locking tabs are fully seated into the main body of the case when reinstalling the
bezel.
3-11

Function Key Membrane and Switchpad Replacement

This procedure provides instructions for replacing the function key membrane and switchpad. All keypad parts
can be replaced without opening the MS272xB case.
1. Place the instrument face up on a static-protected work surface.
2. Remove the keypad bezel and membrane as directed in
Keypad".
3. Six locking tabs hold the function key bezel to the case. Using a small flat blade screwdriver or knife
blade, carefully pry the function key bezel locking tabs free of the main body of the case. This will expose
the function key membrane.
3-8
Section 3-10 "Replacing the Function Key
PN: 10580-00165 Rev. D
Removal and Replacement
(Figure 3-11).
J2
Models MS2723B and MS2724B MM