HP 8000dn Service Manual - Page 402

Table 7-6. Numerical Printer Messages (continued) Message Event Description Log Category/ Message Recommended Action 13.11 XX Duplex turnaround, paper 1. Check the entire paper stopped jam. Paper is jammed in path. the duplex assembly. 2. Reseat the duplexer. 3. Use the Paper Path Test on page 415. 4. Replace the duplexer if necessary. See "Duplexer" on page 149 for instructions. 13.11 11 13.11 1B 13.11 21 13.11 2B 13.11 31 13.11 3B Timeout at the Entry or Exit sensor on the 2000-sheet or 2 x 500-sheet Input Tray. 1. Open the Vertical Transfer Unit (VTU), and remove the media. 2. Make sure that the Entry or Exit sensor can move freely. 3. If the problem persists, open the VTU and override its OpenDoor sensor, perform a Paper Path Test from the 2000-sheet or 2 x 500-sheet Input tray (see "Paper Path Test" on page 415), and make sure the feed rollers are advancing the paper. 4. If the rollers do not rotate, verify the connections at the Main Drive Assembly, Pickup Assembly, Controller PCA, and Power Supply. If the rollers still do not rotate or do not drop down, replace the Pickup Assembly. 5. If the rollers rotate and drop down, but do not advance the paper, replace the feed rollers using the Maintenance Kit. 6. If the problem persists, replace the VTU. 378 Chapter 7 Troubleshooting EN