February, 20082-126 WorkCentre 5225, 5230012-212Launch VersionStatus Indicator Raps012-212 Stacker Tray Upper Limit Failure RAPBSD-ON:12.24After the Stacker Tray started descending, the Stacker Upper Limit Sensor remained ON.Initial Actions• Power OFF/ON• Remove obstructions under the tray.ProcedureCheck the tray raise/lower mechanism for foreign substances and distortion. No distortion orforeign substances are found in the tray raise/lower mechanism.Y NClear away the foreign substances. Correct the distortion.Execute Component Control[012-264 Stack Height Sensor 1]. Actuate the Stack Height Sensor1 with paper. The display changes.Y NCheck the connections of J8873 and P/J8988. J8873 and P/J8988 are connectedcorrectly.Y NConnect J8873 and P/J8988.Check the wire between J8873 and J8988 for an open circuit or a short circuit (BSD12.24). The wire between J8873 and J8988 is conducting without an open circuit ora short circuit.Y NRepair the open circuit or short circuit.Measure the voltage between the Finisher PWB P8988-16 (+) and GND (-) (BSD 12.24).The voltage is approx. +5VDC.Y NReplace the Finisher PWB (PL 23.16).Measure the voltage between the Finisher PWB P8988-17 (+) and GND (-) (BSD 12.24).Actuate the Stack Height Sensor 1 with paper. The voltage changes.Y NReplace the Stack Height Sensor 1 (PL 23.11).Replace the Finisher PWB (PL 23.16).Alternately execute Component Control[012-060 Stacker Motor up ON] and Component Con-trol[012-061 Stacker Motor down ON]. The Stacker Motor (PL 23.7) starts up.Y NCheck the connections of P/J8986. P/J8986 are connected correctly.Y NConnect P/J8986.Check the wires on P8986 for an open circuit or a short circuit (BSD 12.24). The wireson P8986 is conducting without an open circuit or a short circuit.Y NRepair the open circuit or short circuit.Replace the Stacker Motor (PL 23.7). If the problem persists, replace the Finisher PWB(PL 23.16).Replace the Finisher PWB (PL 23.16). If the problem persists, replace the MCU PWB (PL 9.1).AA
