Lexmark X644E Service Manual - Page 206

7002-xxx All black or blank image This symptom may be caused by insufficient illumination from the lamps in the CCD, a defective CCD, or an electrical problem. FRU 1 Determine which portion of the scanner has the problem. 2 ADF CCD module to the interconnect board cable (models X644e/X646e) 3 ADF CCD module to the interconnect board cable (models X644e/X646e) 4 Flatbed interconnect board (CN5) to scanner control card (J28) cable. (models X644e/X646e) 5 ADF CCD module (models X644e/X646e) Flatbed interconnect card Scanner control card 6 Flatbed CCD module to flatbed interconnect board (J2) cable 7 Flatbed CCD module Action If the problem is with the ADF portion of the scanner assembly, go to step 2. If the problem is with the flatbed scanner assembly, go to step 6. Check the 36-pin flatbed interconnect board to ADF CCD module cable to make sure it is connected properly to both the CCD module and the flatbed interconnect board. If it is not connected properly, reconnect and recheck the MFP. If the problem is still present, go to step 3. Check the cable to make sure it is properly connected to both the flatbed interconnect card and to the scanner control card. If it is properly installed, check the cable for any signs of damage, bent pins, or so forth. If any damage is found, replace the complete ADF scanner assembly. See "ADF complete assembly removal" on page 4-15. If no problem is found, go to step 4. Check the cable to make sure it is properly connected to both the flatbed interconnect card and to the scanner control card. If it is properly installed, check the cable for any signs of damage, bent pins, or so forth. If any damage is found, replace the complete ADF scanner assembly. See "ADF complete assembly removal" on page 4-15. If no problem is found, go to step 5. Replace the ADF CCD module. See "ADF CCD module assembly removal (models X644e/X646e)" on page 4-14. If this does not fix the problem, replace the following FRUs in the order listed: • Flatbed interconnect card • Scanner control card Check the cable to make sure it is properly connected to both the flatbed CCD module and to the flatbed interconnect card. If properly installed, check the cable for any signs of damage, ben pins, and so forth. If any damage is found, replace the cable. If no problem, is found, go to step 7. Replace the flatbed CCD module. See "Flatbed CCD module assembly removal" on page 4-28. If does not fix the problem, replace the scanner control card. See "Scanner control card removal" on page 4-48. 2-168 Service Manual