We have been working on a MPC 4502 that is giving us trouble with the controller. We get the occasional SC998 and have tried various fixes to no avail. We have brought in a third tech and he has noticed that the print controller is losing power at regular intervals. I thought the noise was the fuser rotating in sleep mode, but never thought to time the noises. The controller is losing power at 60 second intervals that digress to 30 second intervals. Not only do the NIC led's go out, but the led's on the controller also. Has anyone else seen this before? It is rather curious behavior and we wonder if it is controller or power supply related. Thank you.
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