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sounds like you have another channel set for priority and it is scanning back to check that channel. In the manual mode scroll thru channel's until you find one set with a "p" or "pri" on the screen. Hit the priority button and this should resolve the problem.
Wow, Uniden did their best to make the SC230 manual confusing, didn't they? Here's a link to a much easier to read/use manual that was put together by an SC230 owner who couldn't figure out the factory document. I hope it helps.
Looks like the laser unit has quit!
Subscan signals are not
Polygon motor error
After the main switch turns
on, the polygon motor is not
phase-locked in several
• Incorrect cable connection
• Defective engine control board
1. Connect the cable correctly.
2. Replace the engine control board.
3. Replace the laser scanning unit.
4. Check or replace the cable.
this is an error for the transfer belt there is a mark or the belt has been damaged if you open up th efront cover and then look at the brown panel there are two screws either end that nee to be loosened then lift this up next there is two screws on the transfer unit that run diagonally acros the inside of the machine and a third screw on the black unit (duplex) unit this needs to be taken out.. once you have done this there is a green lever in the top left hand side of the transfer unit this needs to be turned to the left to release the roller take the black duplex unit out by sliding it to the fron then the treansfer unit can be pulled gently out.. it is on two runners so it wont fall off you can hten look at the condition of the belt. if it seems ok look on the edges of the belt by gently turning the gear at the back this will feed the belt around.. if it seems ok put it all back in and then put the srews back in close it up and turn on the machine.. wait for it to warm up.. press the yellow clear/cancel button at the top above the number pad then enter 107 then hold down the cnacel/stop button, hold this down till the screen changes.. turn off the machine and bcak on again.. if the reset has worked the machine should run up and be able to copy and print.. if not you will have to do the same proceedure of clear/cancel button routine and once the screen changes select copy sp then go to section 5.mode then scroll down to 810 sc reset. execute and turn off the machine.. wait 5 secs turn on and test again.. if the error code keeps coming back the B.I.C.U Board may be defective and need to be replaced. check the transfer unit condition of the rollers under the plastic clear image belt also.. Good luck A.