Mindray Resona 7T - Page 171

Structure and Assembly/Disassembly 9-13
3. Pull the silicon buttons out to remove the trackball button PCBA.
4. Remove large fan-shaped button (3), and small fan-shaped button (2).
9.3.6.6 Single-encoder Board
1.
See 9.3.6 Control Panel and 9.3.6.2 for details.
Silicon button
=
Trackball button board PCBA
Large fan
-shaped button (3)
Small fan
-shaped button (2)
S
ignal control wire