HP 8550mfp Service Manual - Page 387
Input, Device Failure, Check Cables, And Cycle Power, Table 41.
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Table 41. Numbered printer messages (continued) 66.11.02 INPUT DEVICE FAILURE CHECK CABLES AND CYCLE POWER Description: Indicates a 2,000-sheet input unit feed motor error. 66.11.03 INPUT DEVICE FAILURE CHECK CABLES AND CYCLE POWER Event log message: 66.11.02 Action: 1 Verify that the c-link and power cables are connected. 2 Turn the printer off and on to reset the printer. 3 Verify that there are no objects in the left side of the tray. 4 Verify that the paper tray raised sensor (PS34) is working properly (perform a sensor test). 5 Check for proper installation of the pick-up roller. 6 Check the pick-up assembly and the paper deck drive assembly cabling. 7 Replace the pick-up assembly. 8 Replace the paper deck drive assembly. Event log message: 66.11.03 Description: Indicates a 2,000-sheet input unit lifting and feed motor error. Action: 1 Verify that the c-link and power cables are connected. 2 Turn the printer off and on to reset the printer. 3 Verify that there are no objects in the left side of the tray. 4 Verify that the lifting plate moves freely by hand. 5 Verify that the paper size plates are installed correctly, and that they are not bent. 6 Replace the paper deck drive assembly bushing. 7 Replace the paper deck drive assembly. 8 Check that the paper tray raised sensor (PS34) is working properly (perform a sensor test). 9 Check for proper installation of the pick-up roller. 10 Check pick-up assembly cabling. 11 Replace the pick-up assembly. EN Printer message troubleshooting 385
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