Lexmark Optra C Service Manual - Page 60

5045-001 Error (148) Developer Unit Rotation Failure FRU Action 1 Poor connection Check the connection on the mechanical controller PCB connector J2016. Reconnect it. 2 Door switch Turn the machine off and disconnect the power cord. Disconnect connector J7 from the power supply unit. When you turn the door switch (SW2) ON, is there continuity between connectors J7-1 (+24VB) and J72 (+24VA)? Replace the door switch. 3 Developing rotary brake clutch Developing unit drive clutch Watch the developer unit motor during POST. Does it rotate? If yes, replace and check as follows: 1. Developing rotary brake clutch. 2. Developing unit drive clutch. 3. Mechanical controller PCB. Mechanical controller PCB If no, replace and check as follows: Developing unit 1. Developing unit motor. motor 2. Mechanical controller PCB. Mechanical controller PCB 4 Developing rotary position sensor Mechanical controller PCB Check the connections on the mechanical controller PCB connector J2006 and developing rotary position sensor connector J60. Clean the sensor. If it is not possible to clean it, replace and check as follows: 1. Developing rotary position sensor. 2. Mechanical controller PCB. 2-28