6-11 Replacing Main Keypad Components – 3-61362, 3-71027-3 Assembly Removal and Replacement,
6-12 PN: 10580-00307 Rev. D MS20xxC MM
6-11 Replacing Main Keypad Components – 3-61362, 3-71027-3
This procedure provides instructions for removing and replacing the Main Keypad Rubber Membrane and/or
the underlying Main Keypad PCB. All keypad parts can be replaced without opening the MS202xC case.
Part Numbers
• 3-61362 – Main Keypad Rubber Membrane, for MS2026C, MS2027C or MS2028C instruments
• 3-71027-3 – Main Keypad PCB, for MS2026C, MS2027C or MS2028C instruments
• 3-61363-1 – Main Keypad Plastic Bezel
• 790-625 – Speaker
Procedure
1. Place the instrument face up on a protected work surface oriented with the top Connector Panel away
from you.
2. Remove the Battery Door and the Battery.
Removing Rotary Knob:
3. Using a medium flat blade screwdriver, remove the Rotary Knob by sliding the screwdriver blade under
the knob and levering it up gently.
Removing Main Keypad Bezel:
4. Eight (8) locking tabs hold the Main Keypad Bezel to the case as shown in Figure 6-8.
Note
Use a small piece of rubber or similar material as a fulcrum to prevent scratches to the front panel
and the switch bezels.
1. Location of Main Keypad Switch Bezel locking tabs, four (4) on left side
2. Location of four (4) locking tabs on right side
Figure 6-8. Main Keypad Bezel Locking Tab Locations