HP DesignJet T770 Series

Table of contents
1 Troubleshooting
Using the Front Panel ........................................................................................................................... 2
General Troubleshooting ...................................................................................................................... 3
The Media Basket was damaged during printer setup ......................................................................... 5
Print quality troubleshooting ................................................................................................................. 6
Ink Supplies Troubleshooting ............................................................................................................. 31
Connectivity troubleshooting .............................................................................................................. 46
2 System Error Codes
Introduction ......................................................................................................................................... 52
Printer logs ......................................................................................................................................... 52
What to do if the Front Panel is blank ................................................................................................ 53
Continuable and Non-Continuable Error Codes ................................................................................. 54
System Error Code Brief Descriptions ................................................................................................ 54
System Error CodesFull Descriptions ............................................................................................. 56
Appendix A: How to troubleshoot SE 79:04 ....................................................................................... 73
Appendix B: Updating firmware in diagnostics boot mode ................................................................. 84
Appendix C: Obtaining the printer log and the diagnostics package .................................................. 85
3 Diagnostics Menu
Introduction ......................................................................................................................................... 88
Diagnostic Tests and Utilities ............................................................................................................. 88
4 Service Menu
Introduction ....................................................................................................................................... 122
Service Utilities ................................................................................................................................. 122
Service Calibrations ......................................................................................................................... 138
5 Parts and Diagrams
Printer Support ................................................................................................................................. 153
Center Covers (Front) ...................................................................................................................... 155
Roll Covers ....................................................................................................................................... 157
Center Covers (Rear) ....................................................................................................................... 159
Right Cover ...................................................................................................................................... 161
Left Cover ......................................................................................................................................... 163
Right Hand Assemblies .................................................................................................................... 165
ENWW iii