Lexmark C782 Service Manual - Page 67

5061 148.xx error code service check Step 1 2 3 4 5 6 Actions and questions Connector J16 on the system board-Check for correct installation of the ITU drive motor cable from the ITU drive motor to the system board connector J16. Is the cable connected correctly? ITU drive motor-Check for continuity between pin 4 of CON1 on the motor drive card and the remaining pins in the connector. Do you measure continuity? Note: The ITU drive motor can be removed from the printer without removing the complete ITU drive motor assembly. If the ITU drive motor assembly is removed be careful not to spill toner that may be contained in the auger system. ITU drive motor cable-Check the continuity of the ITU drive motor cable. Do you measure continuity? ITU drive motor voltage check-Measure the voltage on connector J16 on the system board. The voltages are approximately values. Voltages with motor not running Connector pin Voltages (motor not running) J16-2 +4.2 V dc J16-4 +5.0 V dc J16-6 +3.3 V dc J16-8 +24 V dc J16-10 Ground J16-12 0 V dc J16-14 +3.3 V dc Are the voltages correct? ITU motor drive assembly-Remove the ITU assembly. Manually turn the motor. The gears in the ITU motor assembly, the second transfer roll gears, and the cleaner gear should turn freely. Do the gears turn freely? ITU motor drive assembly-Remove the ITU drive motor assembly. Manually turn the motor. Do the gears on the ITU drive motor assembly turn freely? Yes Go to step 2 Replace the drive motor. Go to step 4 Replace the drive motor. Replace the system board. See "System board removal" on page 4-89. If this does not fix the problem, replace the ITU drive motor. Contact your next level of support. No Install the cable correctly. Go to step 3 Replace the ITU drive motor cable. Go to step 5 Go to step 6 Replace the ITU motor drive assembly. Diagnostic information 2-25