Page: 111Service Guide PM3410Chapter 4 Failure & Repair AnalysisRAP 10: ALARM Lamp ONSTART.Remove the front access cover.Override the space motor interlock switch (left side).Power ON the unit while overriding the cover open switch (right side).Does the ALARM lamp light?NO Correctly connect cable CN13 on the main logic board. Check the alignment between the front accesscover and the cover open switch. Replace the cover open microswitch/cable assembly.YES Is the paper properly installed?NO Install the paper properly.YES Does the continuous form end microswitch function correctly?NO Correctly connect CN103 on the interface connector board. Replace the sheet feeder assembly.YES Does the single sheet end sensor function correctly?NO Check that there is no dirt or dust on the sensor surface. Correctly connect CN1 on the sensor board.Replace the sensor cable assembly.YES Does the bottom feed paper end sensor function correctly?NO Check that there is no dirt or dust on the sensor on the sensor board. Correctly connect cable CN4 onthe main logic board. Replace the sensor board.YES Does the release lever microswitch function correctly?NO Correctly connect cable CN9 on the main logic board. Replace the release lever microswitch andcable assembly.YES Replace the main logic board.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
