On the Subject of Colorful Madness

I hope you don’t have chromophobia!

Take the 1st, 3rd and 5th characters of the serial number.
These will be your main 3 characters.

• If any of your main 3 characters is a letter, convert it to a number:
  • Where A = 0, B = 1, C = 2, D = ... etc.
• If there are any buttons with both red and yellow colors:
  • Add the number of batteries to each of your main 3 digits.
• If there are any buttons with 4×4 checkerboards:
  • Calculate the difference between the number of such buttons and the number of ports.
  • If the number you got is negative, get rid of the negative sign.
  • Subtract that number from each of your main 3 digits.
  • If any of your 3 main digits is negative, get rid of the negative sign.
• If there are any square-on-square buttons:
  • Multiply each of your main 3 digits by the number of battery holders plus the number of port plates.
• If any of your 3 main digits is greater or equal to 10:
  • Subtract 10 from it until it’s smaller than 10.
• If the 1st main digit is equal to the 2nd or 3rd main digits:
  • Add 1 to the 1st digit until it’s not equal to the 2nd nor 3rd digits.
  • If the 1st main digit reaches 10, convert it to 0.
• If the 2nd main digit is equal to the 1st or 3rd main digits:
  • Subtract 1 from the 2nd digit until it’s not equal to the 1st nor 3rd digits.
  • If the 2nd main digit reaches -1, convert it to 9.
• Add 1 to each of your main 3 digits.
• Positions are determined starting from the top-left, going left-to-right and top-to-bottom starting from number 1.
• Finally, press the buttons in the positions indicated by your 3 main digits, alongside with their counterparts that have the same pattern but with the colors reversed.