Structure and Assembly/Disassembly of the Machine
system
Boot bitmap The   image   displayed  when   the 
system starts up.
BMP The   system 
resets 
automatically
Factory 
default setup
the backup of factory DTA data 
in flash 
DTA The   system 
resets 
automatically
Chinese entry Chinese entry data CIM The   system 
resets 
automatically
Transducer’s 
data
The   data   of   the   transducers 
supported
PRB The   system 
resets 
automatically
The system software is taken as an example to describe the upgrading procedure:
Put a U disk with UPG upgrading files into a USB interface.
→Click “system software”, a file dialogue box pops up and opens:
Figure 4-45 The screen for the software upgrading
→Select the file to be upgraded in the dialogue box. The meaning of each item is 
described as follows:
1.  Drive path
2.  Directory path
3.  Name of the selected file
4.  File list
DP-3300/DP-3200 Service Manual(V1.1) 4-3