wan 2012-10-02 13:14:52
i just bought your PR8.when i try to burn the program into the target board,the massage appear "PK2Error0049: VPP Voltage error. Check target and retry operation.".can you explain it why?furthermore,when i check the data voltage(data4) from RFID,the voltage is in -VE value.why?lastly,my LCD doesnt have the LED backlight.is it because i havent burn the PIC or something wrong with it?
Admin Reply :
Hi, please recheck all your connection especially the programmer pins. If you have a multimeter, please measure the voltage on VCC MCLR and GND. Yes, you need to program before the LCD backlight can be ON. Please continue discuss in our technical forum as this is only for short inquiry. Thanks
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Thanx for answering the questions in a short period.now,i already check all the connection and confirm that all of it is OK.when i check the MCLR/VPP pin without connecting the UIC00A cable,it shows 4.5V,but when i connect the ribbon cable (UIC00B) to the UIC00A connector on my target board and i check the voltage at MCLR/VPP,suddenlt the voltage drop to 0V and still the output window on MPLAB shows "PK2Error0049: VPP Voltage error. Check target and retry operation.".i suspect this is the reason why i cant write the hex code into the contoller.so,what is your suggestion??