HP Color LaserJet 8500 Service Manual - Page 208
Configuring operating modes, Power-on sequence, Bidirectional environment
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Note Configuring operating modes The network administrator chooses the mode of operation through an HP network configuration utility, such as the HP JetAdmin software or the HP LaserJet utility for the Macintosh. Additionally, on all workstations that print to the printer, the printer driver might need to be set up to reflect the chosen operating mode. Bidirectional environment - The printer automatically selects the mode established by the network administrator. Unidirectional environment - The mode of operation can be changed in the driver to reflect the current multi-bin mailbox settings. The method for changing the mode varies with the driver and type of operating system. For additional information, see the online help for the printer software. Power-on sequence During the power-on sequence, the delivery head assembly moves first to the top, "home" position at the face-up bin. From that position the delivery head moves down, scanning to determine if all the multibin mailbox bins are installed, if they contain paper, and if they are full. Then the delivery head proceeds upward again to the home position and remains there for about 7 seconds. Finally, the delivery head assembly moves to the bottom bin, where it waits for the next command from the EPH controller board. If one of the bins has been removed or is not seated correctly, the delivery head assembly will not complete the scan and will send an error message to the printer control panel. 206 Chapter 5 - Theory of operation EN