Oki Data CONFIDENTIAL45487001TH Rev.1 6-61 /6. Troubleshooting procedure6.5.2.(14) LED head cannot be recognized. (Errors 134)(14-1) Errors 134 (LED HEAD Missing)Check item Check work Actions to be takenat NG(14-1-1) Check the system connectionConnectingcondition at thePU/CU boardconnector and atthe head connector.Check the connecting condition of the FFC bythe visual inspection.Correct theconnectionto the normalconnectingcondition.Head FFC Remove the head FFC from the printer. Checkif any open-circuit or peeling-off of sheath hasoccurred or not throughout the cable.Replace thehead FFC orthe PU/CUboard.Conduction of thefuse on the PU/CUboard.Check that 5V is measured at the ends of thecapacitors CP15 and also check ifthe fuse F17 or F13 is open-circuited.Replace thePU/CU board.
