Originally Posted by
r4roty
Hello all, I have a Bizhub c452 with error code c3b05 which was reset and during warm up reverted to c3425 error. This was also reset but upon power ON, I noticed a chattering noise on the IHPU relay. This resulted in low heat in the fuser unit and machine showing"warming up" on control panel The small heat sink on the IGBT transistor on the IHPU was observed to be abnormally hot! while the bigger heat sink sinking the bridge rectifier and the second IGBT was normal, checked fuser unit, connectors on relay driver board, and prcb. Problem still exists. What else could be overloading the IHPU? Could it be the IH coil, IHPU? any ideas to localizing this problem will be much appreciated. Thanks in advance.
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