HP Designjet T770, T1200 (service manual (EN)

DESIGNJET T770 & T1200 printer series Service manual

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© 2010 Hewlett-Packard Development Company, L.P. Legal notices This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. 1st edition

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Table of contents 1 Troubleshooting ................................................................................................................ 1 Using the Front Panel ................................................................................................................ 2 General troubleshooting ........................................................................................................... 3 Paper-handling troubleshooting .................................................................................................. 6 Print-quality troubleshooting .......................................................................................................

6 Ink-supplies troubleshooting ..................................................................................................... 32 Connectivity troubleshooting .................................................................................................... 48 2 System Error Codes ......................................................................................................... 53 Introduction ........................................................................................................................... 54 Printer logs ............................................................................................................................

54 What to do if the Front Panel is blank ....................................................................................... 55 Continuable and Non-Continuable Error Codes ......................................................................... 56 System Error Code Brief Descriptions ........................................................................................ 56 System Error Codes—Full Descriptions ...................................................................................... 58 Appendix A: How to troubleshoot SE 79:04 .............................................................................. 77 Appendix B:

Updating firmware in diagnostics boot mode .......................................................... 89 Appendix C: Obtaining the printer log and the diagnostics package ............................................ 90 Appendix D: How to check the display list memory for an HP-GL/2 job ........................................ 92 3 Diagnostics Menu ........................................................................................................... 94 Introduction ...........................................................................................................................

95 Diagnostic Tests and Utilities .................................................................................................... 96 4 Service Menu ................................................................................................................ 128 Introduction ......................................................................................................................... 129 Service Utilities .................................................................................................................... 129 Service Calibrations .............................................................................................................

147 5 Parts and Diagrams ...................................................................................................... 159 Introduction ......................................................................................................................... 160 Printer Support ..................................................................................................................... 161 Center Covers (Front) ............................................................................................................ 162 Roll Covers ..........................................................................................................................

163 Center Covers (Rear) ............................................................................................................ 164 Right Cover ......................................................................................................................... 165 ENWW iii

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Left Cover ........................................................................................................................... 166 Right Hand Assemblies ......................................................................................................... 167 Left Hand Assemblies ............................................................................................................ 168 Carriage Assembly ............................................................................................................... 169 Scan-Axis Assemblies ...........................................................................................................

170 Paper Path Assemblies (Front) ................................................................................................ 171 Paper Path Assemblies (Rear) ................................................................................................. 172 Roll Supports ....................................................................................................................... 173 Tools 1 ............................................................................................................................... 174 Tools 2 ...............................................................................................................................

175 Miscellaneous Parts .............................................................................................................. 176 6 Removal and Installation .............................................................................................. 177 Introduction ......................................................................................................................... 180 Customer Self Repair parts .................................................................................................... 182 Service Calibration Guide to Removal and Installation ..............................................................

184 Belt Assembly ...................................................................................................................... 187 Bin Assembly ....................................................................................................................... 188 Bi-stable Springs (T1200 only) ............................................................................................... 191 Bumpers, Left and Right ......................................................................................................... 197 Cable Harness .....................................................................................................................

200 Carriage and Cutter Assembly ............................................................................................... 208 Carriage Bushing, Rear ........................................................................................................ 217 Carriage Cover and Carriage Latch ....................................................................................... 219 Carriage Rail Oiler .............................................................................................................. 224 Carriage PCA ......................................................................................................................

226 Cleanout ............................................................................................................................. 231 Converger ........................................................................................................................... 233 Cover, Front ........................................................................................................................ 235 Cover, Left .......................................................................................................................... 236 Cover, Rear .........................................................................................................................

240 Cover, Right ........................................................................................................................ 241 Cover, Top .......................................................................................................................... 244 Cutter Assembly ................................................................................................................... 247 Drop Detector ...................................................................................................................... 251 EE Box ................................................................................................................................

253 Electronics Module Main PCA and PSU .................................................................................. 256 Encoder Disk and Encoder Sensor .......................................................................................... 260 Encoder Strip ....................................................................................................................... 262 Encoder Strip, spring and attachment nut ................................................................................ 263 Formatter ............................................................................................................................

266 Freewheel Assembly ............................................................................................................. 267 Front Panel .......................................................................................................................... 270 Front Trim, Left ..................................................................................................................... 273 Front Trim, Right ................................................................................................................... 275 Full Bleed Foam ...................................................................................................................

277 Hard Disk Drive ................................................................................................................... 278 iv ENWW

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