Lexmark X644E Service Manual - Page 145

7002-xxx FRU 4 Motor driver card 5 Second scan sensor- electrical checks 292.00 Error code service check ADF cover open jam. Action Turn the power off, and disconnect CN9 on the motor driver card. Measure the voltages in the table below: Second scan sensor-reflective type (normally closed) Connector CN9 (motor driver card) CN9-Pin 4 CN9-Pin 5 0 V dc +5 V dc CN9-Pin 6 +5 V dc Note: All voltages are approximate values. If incorrect, replace the motor driver card. If correct, go to step 5. Turn the power off and reconnect CN9 to the motor driver card. Measure the voltages in the table below with the sensor in normal operations (sensor closed) and with the sensor open (sensor flag activated). Second scan sensor-interrupter type (normally closed) Connector CN9 (motor driver card) Pin number Sensor closed Sensor open CN9-Pin 4 0 V dc 0 V dc CN9-Pin 5 +1.16 V dc +1.16 V dc CN9-Pin 6 +5.0 V dc +0.15 V dc Note: All voltages are approximate values. If the voltages are incorrect, replace the second scan sensor. If this does not fix the problem, replace the complete ADF assembly. See "ADF complete assembly removal" on page 4-15. Note: Whenever the complete ADF assembly is replaced, it is necessary to perform scanner registration. See "Scanner registration" on page 4-4. FRU 1 ADF upper top cover Action Check the ADF upper top cover to make sure it closes properly and does not come loose or pop up while the ADF is scanning. Diagnostic information 2-107