Structure and Assembly/Disassembly of the Machine
Figure 2-36 Disassembly of the back board fan
1.4.10Remove USB extension wire
1.  Disassemble the rear cover, the cabinet tail board assembly, the cabinet back 
board assembly and the front cover assembly; 
2.  Remove   7   PT3x8   screws   fixing   the   cabinet   bottom   board,   and   remove   the 
cabinet; 
DP-3300/DP-3200 Service Manual(V1.1) 2-27