That's a communication error between the duplex PWB and the main PWB, and it's occurred 30 times in two weeks and 5 times in the last two days. At first I thought there might be a problem with the duplex drawer connector until it occurred to me that the duplex PWB isn't on the drawer. It's on the rear frame under the fuser drive assembly.
And that brings me to my theory. A few months ago the fuser drive motor pinion shaft and helical gear failed, creating a fine dusting of steel shavings over the duplex PWB. I cleaned up as much of the dust as I could, but did not touch the board. I believe that the steel shavings are creating unintended conductivity paths on the duplex PWB.
It will be interesting if this works. I took a soft brush and compressed air to remove as much of the steel dust as possible. Time will tell if it makes any difference. Have you seen anything like this? =^..^=
And that brings me to my theory. A few months ago the fuser drive motor pinion shaft and helical gear failed, creating a fine dusting of steel shavings over the duplex PWB. I cleaned up as much of the dust as I could, but did not touch the board. I believe that the steel shavings are creating unintended conductivity paths on the duplex PWB.
It will be interesting if this works. I took a soft brush and compressed air to remove as much of the steel dust as possible. Time will tell if it makes any difference. Have you seen anything like this? =^..^=
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