Service manual

ViewSonic Corporation Confidential - Do Not Copy VA702-3_VA702b-3
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3. Use ISP to program MCU
3.1 Select MTV type first , load the binary or intel hex file that you want to program into the MCU , and select “ AUTO”
item , then press “ RUN “ button , see fig3.1
3.2 If user change the MTV type , it must load file again , or the buffer of load file will be cleared .
3.3 CRC ( cyclic redundancy check ) : the host can check CRC register’s result instead of reading every byte in
flash . The message of Check MCU CRC OK means that the host verify OK for the progress of program .