August 20072-120 WorkCentre 5687 Family05-340Status Indicator RAPs05-340 DADH Registration Sensor Failure RAP05-340 The DADH registration sensor does not detect the lead edge of the document withinthe correct time.Initial Actions• Remove all documents from the DADH.• Remove the DADH top cover assembly, PL 5.20 Item 16. Make sure the harnesses arerouted correctly and away from the document path, Figure 1.ProcedureWARNINGSwitch off the electricity to the machine, GP 14. Disconnect the power cord from thecustomer supply while performing tasks that do not need electricity. Electricity cancause death or injury. Moving parts can cause injury.NOTE: To access the DADH registration sensor, remove the DADH top cover, PL 5.20 Item 15.Open the top access cover assembly. Enter dC330 code 05-340 to check the DADH registra-tion sensor, Q05-340, Figure 2. Activate Q05-340. The display changes.Y NGo to Flag 1. Check Q05-340.References:• GP 11 How to Check a Sensor.• P/J186, DADH PWB.• 01D +3.3V Distribution RAP.• 01B 0V Distribution RAP, refer to the 3.3V return.Install new components as necessary:• DADH registration sensor, PL 5.25 Item 1.• DADH PWB, PL 5.10 Item 5.Remove the DADH rear cover, PL 5.10 Item 1. Hold the top cover interlock switch closed.Enter dC330 code 05-030 to check the DADH CVT motor, MOT05-030. MOT05-030 runs.Y NGo to the 05D DADH Motor Failure RAP.The CVT roll rotates.Y NPerform the steps that follow:• Check the CVT motor drive belt, PL 5.25 Item 11.• Check the CVT motor tension spring. Make sure that the CVT motor drive belt ten-sion is correct, ADJ 5.1.• Check the CVT roll pulley, refer to GP 7.If necessary, install a new DADH CVT roll, PL 5.25 Item 5.The fault only occurs in duplex mode.Y NGo to Final Actions.This fault can be caused by the DADH feed motor running too slowly in reverse. Refer to the05D DADH Motor Failure RAP. If the fault continues, go to Final Actions.Final ActionsPerform the steps that follow:• Check that Q05-340 is installed correctly.• Make sure that the CVT idler rolls are clean and rotate freely, refer to ADJ 5.4.• Make sure that the CVT roll is clean, refer to ADJ 5.4.• Make sure the feed motor drive belt and the CVT motor drive belt are tensioned correctly,ADJ 5.1.Install new components as necessary:• DADH CVT roll, PL 5.25 Item 5.• DADH top access cover assembly, PL 5.20 Item 17.If the fault continues, make sure that documents correctly exit the previous sensor in the docu-ment path. Refer to the 05-350, 05-352 DADH CVT Sensor Failure RAP.Figure 1 Component locationGround harnessSensor harnessesDADH registration sensorQ05-340AA
