HP Color LaserJet 9500 Service Manual - Page 224

Table 29. Control panel and event log messages-3,000-sheet stacker (continued) Event log, if connected to Control panel message 9000 9500, 9500mfp, 9050, 9000mfp 9050/9040mfp User LED Service LED Description Optional bin 2 full None None None Amber blinking Green solid The stacker bin is full. More than 3,000 sheets of 75 g/m2 letter-size or A4-size paper has been collected (or fewer than 3,000 sheets of heavier or larger media. Recommended action: 1 Remove all media from the stacker bin. 2 If the condition persists when the bin is empty, then verify that there is nothing blocking the optical sensors. 3 Verify the functionality of the optical sensors by using the sensor test (see "Stacker bin-full sensor test" on page 240) and replace faulty optical sensors. 4 Verify that the optical sensors are not receiving any direct light, which can cause the stacker bin to move all the way down when empty. 5 If the sensors operate correctly and do not receive any direct light, then replace the controller PCA. Output paper path open None None None Red blinking Green blinking The paper path between the printer or MFP and the output device is open. Recommended action: 1 Make sure that the attachment bracket and magnets are installed correctly. 2 Make sure that no cables are in between the output device and the printer or MFP. 3 Verify the functionality of the interlock switch and replace the switch if appears to be broken. 4 Verify the cable connections of the interlock switch. 5 If the harness is connected, but the message persists, then replace the interlock switch. 6 If, after you replace the interlock switch, the message persists, then replace the controller PCA. 222 Troubleshooting ENWW