Lexmark C750 Service Manual - Page 429

5060-00x d. Turn on the printer and note the new error codes. If an automatic calibration begins, 36 Printer Service Required may appear. The printhead and RIP board are working correctly and the printhead cable connections should be checked. Press Go to clear the error. • If the error code remains the same, replace the RIP board. If that solves the problem, you are finished. • If the printer displays a different printhead error code, which indicates another color, the printhead or the printhead cables are defective. See the table below for printhead codes. For example, the printer originally displays the printhead error code 108 (yellow). After switching the signals using the diagnostic tool, the printer displays the printhead error code 106 (cyan). Printhead error codes Yellow For 10x errors For 11x errors For errors 169-175 Not commonly seen 108 117 175 176 Cyan 106 115 171 172 Printhead error codes Magenta 107 116 173 174 Black (K) 109 114 169 170 • 4. Remove the printhead diagnostic tool. 5. The problem is in either the printhead cables or the printhead. Replace the printhead cables. 6. If the problem remains, replace the printhead. Perform the printhead adjustments. Appendix A-Service tips A-3