How to Clear an Eprom

EPROM is an acronym for erasable programmable read only memory. EPROM chips are much less expensive over time than trying to use ROM on POM chips. These chips, instead of filling up with memory and being useless after, have the ability to be erased and later reused. This ability to be reused makes them valuable because they can always be rewritten. However, it takes skill and an ultraviolet light to erase the memory on these chips.

Difficulty: ModerateInstructionsThings You'll Need:Ultraviolet light Frequency 253.7Protective glovesProtective eyewear1

Establish your chip check the memory on the EPROM. This can be done by entering the EPROM memory bank on the computer.

2

Erase the chip, clearing all the memory. Restart your computer.

3

Remove the backing of the computer in order to reach the EPROM chip. Remove the EPROM chip from the computer. Place in on your workstation.

4

Put on your protective eyewear and gloves. Make sure you have your source of ultraviolet ready frequency set to 253.7. This is the only frequency that will allow you to erase the EPROM chip correctly.

5

Hold the ultraviolet light exactly 1 inch away from the EPROM.

6

Place EPROM chip back into the computer. Put computer back together and restart the computer.

Tips & WarningsAn EPROM can be cleared several times, but the chip will become worn over time. It may take longer each time you begin the erase processBe sure to fully erase the chip when completing the erase process.The further the light is from the chip the less the frequency. Check the year of the EPROM chip you are trying to erase depending on the year of the chip this step might take longer. References EMAC: Eprom Programmers User Manual Nerd Out: Eprom Erasing

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