6-13 Replacing Main Menu Keypad Components Assembly Removal and Replacement, MS202xC
6-20 PN: 10580-00307 Rev. D MS20xxC MM
18. Remove and set aside the old Main Menu Keypad Flex PCB.
Replacing Main Menu Keypad Components:
19. Insert the replacement Main Menu Keypad Flex PCB into its slot.
20. Gently feed the right end of the Main Menu Flex PCB into the open Flip Lock connector and, when
positioned correctly, snap the Lock into position.
21. Apply a drop of silicon sealant to the Flip Lock and the underlying Main Menu Keypad Flex PCB. The
sealant drop should not protrude more than 2 mm above the top of the connector.
22. Allow ample time for the sealant to set before proceeding.
23. Insert the replacement Main Menu Keypad Rubber Membrane into the case slot, making sure that the
Membrane correctly aligns with the ribbon cable.
Note that the membrane can go in only one way, with the center slots offset to the right.
24. Replace the Main Menu Keypad Bezel (new or used) making sure that it has the correct orientation.
• The bezel end with two latches at the extreme end goes towards the left side of the instrument.
• The bezel end with two inset latches goes toward the right side of the instrument.
25. Work your way around the bezel gradually getting each Locking Tab partially into its slot. Take care not
to bend any locking tab.
26. When all are correctly inserted, go around again snapping each tab into place.
27. When complete, each Main Menu button should protrude approximately 1.5 mm to 2 mm above the bezel.
Installing Main Keypad Rubber Membrane:
28. Starting at the bottom of the Main Keypad, lay in the Main Keypad Rubber Membrane working towards
the top.
29. At the top, lift up each edge of the Speaker and lay in the Membrane.
30. When complete, the Speaker should sit ON TOP of the rubber Membrane. The rubber membrane lies
between the speaker and the PCB.
31. Make sure that the Main Menu Keypad ribbon cable is still securely connected.
Installing Main Keypad Bezel:
32. Replace the Main Keypad Bezel by first correctly positioning it over its mounting slot, making sure that
the latches at the very end of the bezel are to the left.
33. Work your way around the bezel gradually positioning each Locking Tab partially into its slot. Take care
not to bend any Locking Tab.
34. When all tabs are correctly inserted, go around again snapping each tab into place.
35. When complete, each membrane button should protrude approximately 1.5 mm to 2 mm above the bezel.
Installing Rotary Knob:
36. Install the Rotary Knob by pressing it onto the encoder shaft. The Knob has no specific orientation.
Installing Battery:
Refer to Section 5-4 “Battery Pack Removal and Replacement” on page 5-3.
37. Install the Battery.
38. Install the Battery Door.
Restarting the Instrument:
Caution
The two keypad PCBs are fragile. Handle them with great care.
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