Lexmark Optra C710 Service Manual - Page 192
Service Manual, POR incomplete. Close door message displays when duplex
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5016-001 G POR incomplete. Close door message displays when duplex option installed and all doors and covers on the duplex are closed. FRU Action 1 Tray Present Detect Sensor (S9) Duplex Option Controller Board Check the voltages on the duplex tray detect sensor on connector CN905. Pin # 5 (Red) 6 (Blue) 7 (Green) Voltage Signal VL POSN DGND Voltage Closed +5 V dc +5 V dc 0 V dc Voltage Open +5 V dc 0 V dc 0 V dc All voltages are approximate values. 2 Duplex Upper Unit Door Open Sensor(S6) Duplex Option Controller Board • If the voltage on pin 5 is incorrect, replace the duplex option controller board. • If the voltage on pin 6 does not change when the duplex tray is open and closed, replace the FRUs in the following order: 1. Tray detect sensor (DRSN) 2. Duplex option controller board Check the voltages on the duplex upper unit door open sensor on connector CN904. Pin # 14 16 (yellow) 18 Voltage Signal VL DOSN DGND Voltage Closed +5V dc +5 V dc 0 V dc Voltage Open +5V dc 0 V dc 0 V dc All voltages are approximate values. • If the voltage on pin 14 is incorrect, replace the duplex option controller board. • If the voltage on pin 16 does not change when the upper unit cover is opened and closed, replace the FRUs in the following order: 1. Duplex upper unit door open sensor 2. Duplex option controller board 2-126 Service Manual