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copier tech
03-24-2014, 07:08 PM
Just been to look at a Bizhub 423, the machine was printing & copying solid black pages, but intermittently it would start working OK.
I took the K IU out, cleaned all contacts etc, reassembled it & still it would print out black pages, if I tried to print the counter list for example this would be black & from what I could see no text on the page.
Any idea what could be causing this, I was a little lost as to what it could be!?
Many thanks

Albonline
03-24-2014, 10:44 PM
no charge = black prints

copier tech
03-25-2014, 09:27 AM
Thanks, I suspected a charge fault. Is the HVT the one that sits just behind below the image unit?

Kenzo123
03-25-2014, 10:10 AM
a bad contact in the drum can cause this problem to.

copier tech
03-25-2014, 10:58 AM
Thanks, i'll order a new IU.
but my question about the HVT is it the board below the IU? & can that cause my issue!?
many thanks

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