98bf30f6_cess_ATM___Hyosung_Error_Codes__Description
[Code] CDN0F [Resolution] Check cables between CDU and Mainboard, remove cables (even though they may be attached) and re-connect. Use an electrical parts contact cleaner on terminals. This error is of concern only if it is repeated. Outside interference may cause it (neon signs, lights). [Description] 
CDU connection failure
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