HP 8550mfp Service Manual - Page 483
Check that all paper bins are, Check for free movement of
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Table 49. Status LEDs on the multi-bin mailbox (continued) User LED Service LEDs Message description External memory error Multi-bin mailbox NVRAM damaged. Recommended action Replace the multi-bin mailbox controller PCA. Jam in delivery head assembly Time-out condition in the PSExit1 sensor. Check for media jam in the delivery head assembly. Check for free movement in both PSExit1 and PSExit2 sensors on the delivery head assembly. Check that the fingers are over the ejector rollers on the delivery head assembly. Replace the flat ribbon cable that connects to the delivery head assembly. Replace the delivery head assembly. Replace the multi-bin mailbox controller PCA. Jam in the delivery head position Check that the blind cover and system scan bar are installed properly. The elevator motor detects an invalid Check for media jam in the window when scanning. delivery head assembly. Check for free movement of the delivery head assembly. Check that all paper bins are seated correctly. Check that paper bins and blind cover are not broken. Replace the delivery head motor. Replace the delivery head assembly. Replace the multi-bin mailbox controller PCA. Wrong page request Page request received with invalid output bin or invalid paper size information. Check the bin destination. Check the paper size configuration. Power up the system. EN Multi-bin mailbox troubleshooting 481
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