Structure and Assembly/Disassembly of the Machine
Chapter 3 System Start-up and Upgrade
3.1System Start-up
1. The system completes the initialization of CPU, DRAM and chip selection;
2. The system copies the software codes solidified in the flash to DRAM;
3. The system runs the software in DRAM, configures CPU interrupt, and fills in the
interrupt vector table;
4. The system configures the display circuit FPGA;
5. The system displays the start-up screen;
6. The system configures other circuit FPGA;
7. The system reads out the preset data, and based on the preset, selects the exam
mode and the transducer;
8. The front end is initialized based on the selected transducer;
9. The system initializes the scanning and back-end parameters, opens the scanning
interrupt and performs the image scanning.
3.2Software Upgrading
Note: the system software can be upgraded only when the machine has the USB
interface.
3.2.1Entering the upgrading procedure
Entering the maintenance operation:
click
『
File
』
key
→click “preset”
DP-3300/DP-3200 Service Manual（V1.1） 4-1
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