Service Bulletin
Contents
1. 89 121 ensure the process module is properly timed as described in the service manual topic ADJ 1 3 Process Drive Alignment If correctly timed go to the following topic What to do if you see chronic 89 121 CT3 fault codes If you do not find jam code 89 121 CT3 look for another cause for the jam Such as e Incorrect media e Worn out pick rollers e Worn out y axis motor extremely high print count e Worn or damaged transfix rollers extremely high print count e Damaged Deskew clutch in the media drive assembly Check the clutch resistance 185 ohms 15 to verify the clutch is good Failure analysis has found that with a small percentage of process drive assemblies tolerance stack ups may restrict the movement of the swing arm e mail Terry Ennis xerox com Page 1 of 1 What to do if you see chronic 89 121 C3T fault codes For a machine with a properly timed process drive that is intermittently making noises during transfixing or chronically jamming at the left door with jam code C3T recorded remove the spacer colored blue in the illustrations for clarity from the swing arm With the spacer removed tolerances are opened up and the swing arm can shift back and forth quicker It is not necessary to remove the process drive to remove the spacer Caution Only remove the spacer from a process drive s swing arm if you see a history of 89 121 C3T jams 1 With a pair of forceps or fine tip needle nose plie2. SERVICE BULLETIN Date Issued 22 Aug 2012 T7962 08 15 Product ColorQube 8570 8870 Operational Groups All Jam at Front Door with code 89 121 C3T recorded in Jam History A Process Drive Assembly manufacturing tolerance issue may yield loud intermittent noises during transfixing Jams reporting at the control panel as Jam at the Front Door may occur The lead edge of the sheet paper will be in the drum transfix nip and the media z folded in front of the preheater Jam code 89 121 C3T will be recorded in the machine s jam history At this time it is estimated 10 15 of process drive assemblies may have this tolerance issue FRU stock included The process drives swing arm directs the process motor s motion either to the drum maintenance gear train or to the transfix gear train If the swing arm does not shift from the drum maintenance position to the transfix position quickly enough a jam may occur Transfix Gear Train Swing arm Spacer colored blue for clarity Drum Maintenance Gear Train Bulletin Contact Terry Ennis SLDS Code s C78 Intelnet 8 875 3867 Aug 22 2012 What to do When a jam occurs as with any jam obtain the relevant error code 1 At the control panel scroll to Troubleshooting gt Service Tools gt Jam History 2 Look for the jam code 89 121 C3T This error occurs when the print fails to transfix and the media path s strip sensor is not tripped 3 If you find jam code
3. rs gently pry up the left edges of the spacer A dental pic can also help pry it up The spacer is held in place with low tack adhesive Lift it free of the swing arm and discard n e I p hy ms i M j PAN F j AF A F Saci j i sagt Saeen i 1 r 2 Test the printer by making several two sided prints Page 2 of 2 PART INVENTORY STRATEGY When dealing with chronic jamming with fault code 89 121 C3T first attempt to resolve the problem by removing the swing arm spacer If that fails to resolve the problem replace the process drive When responding to a service call for a Jam at Front Door stock a process drive assembly Process Drive Assembly 007K20020 TME
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