inboard ETACS LED Out of range. Ive cleaned them, will occasionally pass 951, then run for awhile but many times its this error. if I let it sit too long, it wont cycle up. 9-1100.... so the cycle begins again. got a 9-3110 once. Tried: new belt, pre clean corotron, random cleaning, checking, reboot. ideas? Feel like thats a sensor thing, not an actual problem. anything else to check?