Table of contents 1 Printer fundamentals .................................................................................................................................... 1 Introduction ........................................................................................................................................................... 2 Theory of operation ............................................................................................................................................... 5 2 Troubleshooting ..........................................................................................................................................
32 The front panel .................................................................................................................................................... 32 Service keys combination .................................................................................................................................... 35 Troubleshooting tree (T920 and T1500 only) .................................................................................................... 36 Product Troubleshooting trees (T2500 and T3500 only) ...................................................................................
38 Scanner Troubleshooting Tree ............................................................................................................................ 39 Scanner CIS Troubleshooting .............................................................................................................................. 40 Paper handling problems .................................................................................................................................... 41 Ink supply problems ............................................................................................................................................
52 Print-quality problems ........................................................................................................................................ 61 Connectivity problems ......................................................................................................................................... 76 Scanning Problems .............................................................................................................................................. 81 Firmware upgrades ..............................................................................................................................................
83 3 System error codes ...................................................................................................................................... 84 Introduction ......................................................................................................................................................... 85 What to do if the front panel fails to initialize .................................................................................................... 87 System error codes in brief .................................................................................................................................
89 System error codes in full ................................................................................................................................... 92 Appendix A: How to troubleshoot system error 79:04 and 79.2:04 ................................................................ 118 Appendix B: Updating firmware in boot mode .................................................................................................. 129 Appendix C: Obtaining the diagnostics package ...............................................................................................
130 4 Diagnostics, Service Utilities and Calibrations ............................................................................................. 132 Introduction ....................................................................................................................................................... 133 Diagnostic Tests and Utilities ............................................................................................................................ 134 Service Utilities ..................................................................................................................................................
151 Service Calibrations ........................................................................................................................................... 176 ENWW v