HP Color LaserJet 9500 Service Manual - Page 57

Note 8-bin mailbox When the 8-bin mailbox is turned on, the flipper and eject assemblies receive the initialization command and start the rollers in an attempt to eject any paper in the path. Then the assemblies check the sensors. If the sensors detect media, they signal an initial jam. If no jam exists, initialization for the flipper and eject assemblies is complete. This triggers the elevator initialization. The elevator initialization is the same for all of the operating modes, with the exception of the end of the initialization. The final position of the elevator head depends on the presence of paper and the operation mode. At initialization, make sure that the encoders in the flipper and belt motors are connected. If no transitions are detected, a critical error is indicated. This test is performed only during initialization. ENWW Chapter 5 Theory of operation 55