Structure and Assembly/Disassembly of the Machine
6.  Disconnect   the   connection   wire   connector   of   the   buzzer,   remove   14   ST3x8 
screws fixing the keyboard, and remove the silicone rubber keys to take out the 
keyboard PCB, and then remove 2 ST2x6 screws fixing the buzzer to take out 
the buzzer;
Figure 2-34 Remove the buzzer
DP-3300/DP-3200 Service Manual(V1.1) 2-25
ST3x8 screw ( 14 )
Keyboard PCB
Silicone rubber key
Connection wire of buzzer
Buzzer
ST2x6 screw ( 2 )