Lexmark Optra C Service Manual - Page 61

5045-001 Error (149) Developer Unit Pressure Failure FRU Action 1 Poor connection Check the connection on the mechanical controller PCB connector J2016. 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 unit Watch the developer unit motor during POST. Does the developing unit motor rotate? Replace and check as follows: 4 Developing rotary position sensor Toner cartridge position sensor Mechanical controller PCB 1. Developing unit motor. 2. Mechanical controller PCB. Check the connections on the mechanical controller PCB connector J2006, toner cartridge position sensor connector J59 and developing rotary position sensor position sensor J60. Replace and check as follows: 1. Toner cartridge position sensor. 2. Developing rotary position sensor. 3. Mechanical controller PCB. Error (152) Tray 2 Power Failure FRU Action 1 Poor connection Check the connections on the paper feeder driver PCB connector J355 and power supply unit connector J361. Reconnect them. 2 Power supply unit Paper feeder driver PCB Mechanical controller PCB DC controller PCB Replace the paper feeder power supply unit. Replace and check as follows: 1. Paper feeder driver PCB. 2. Mechanical controller PCB. If the problem remains, replace the DC controller PCB. See "DC Controller Board Information" on page 2-2. Diagnostic Information 2-29