HP T120 User's Manual

DESIGNJET T120/T520 ePrinter Series Service Manual

DESIGNJET T120/T520 ePrinter Series Service Manual

© 2012 Hewlett-Packard Development Company, L.P.

1st edition, August 2012

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.

Notices

Warranty

The information contained in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

WARNING WARNING

The procedures described in this manual are to be performed by HP-qualified service personnel only.

Electrical Shock Hazard

Serious shock hazard leading to death or injury may result if you do not take the following precautions: ● ● ● The Warning symbol calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a Warning symbol until the indicated conditions are fully understood and met.

Ensure that the AC power outlet (mains) has a protective earth (ground) terminal.

Disconnect the printer from the power source prior to performing any maintenance.

Prevent water or any other liquids from running onto electrical components or circuits, or through openings in the enclosure.

CAUTION

The Caution symbol calls attention to an operating procedure, practice, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the printer. Do not proceed beyond a Caution symbol until the indicated conditions are fully understood and met.

Electrostatic Discharge

See the beginning of Chapter 4's Introduction on page 143 of this manual, for precautions you should take to prevent damage to the printer circuits from electrostatic discharge.

Safety Symbols

General definitions of safety symbols are given immediately after the table of contents.

Customer Assurance Customer Experience Section Large Format Printing Division Hewlett-Packard Española, S.A.

Avenida Graells, 501 08174 Sant Cugat del Vallès Spain ENWW iii

iv Notices ENWW

Using this manual

This service manual contains information necessary to test, maintain, and service the following:

HP Designjet T120 Basic Printer 24 inch HP Designjet T520 Pro Printer 24 inch HP Designjet T520 Pro Printer 36 inch

CQ891A CQ890A CQ893A For information about using these printers, see the user's guide.

Readership

The procedures described in this service manual are to be performed by HP Certified service personnel only.

Part numbers

Part numbers for printer service parts are located in Parts and diagrams on page 126 .

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vi Using this manual ENWW

Table of contents

1 Printer fundamentals ........................................................................................................ 1

Overview ................................................................................................................................ 1 Using the front panel ................................................................................................................ 2 Start-up sequence ..................................................................................................................... 3 Subsystems .............................................................................................................................. 5

2 Troubleshooting .............................................................................................................. 34

Printer troubleshooting flowchart .............................................................................................. 35 Basic printer troubleshooting ................................................................................................... 36 System error codes ................................................................................................................. 39 Paper troubleshooting ............................................................................................................. 61 Communication troubleshooting ............................................................................................... 66 Ink-supplies troubleshooting ..................................................................................................... 70 Print-quality troubleshooting ..................................................................................................... 83 Update the firmware ............................................................................................................... 97

3 Support menus ............................................................................................................. 101

Entering the support menus .................................................................................................... 102 Support menu ...................................................................................................................... 104 Extended Support menu ........................................................................................................ 124

4 Parts and diagrams ...................................................................................................... 126

Introduction ......................................................................................................................... 126 Printer support ..................................................................................................................... 127 Covers ................................................................................................................................ 128 Roll covers .......................................................................................................................... 129 Right-hand assemblies ........................................................................................................... 130 Left-hand assemblies ............................................................................................................. 132 Carriage assembly ............................................................................................................... 134 Paper path (front) ................................................................................................................. 136 Paper path (rear) ................................................................................................................. 137 Roll supports ........................................................................................................................ 138 Sensor Kit ........................................................................................................................... 139 Miscellaneous parts .............................................................................................................. 140 ENWW vii

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5 Removal and installation .............................................................................................. 141

Introduction ......................................................................................................................... 143 Customer Self Repair parts .................................................................................................... 145 Videos available .................................................................................................................. 146 Recommended checks after replacing parts ............................................................................. 146 Top Cover ........................................................................................................................... 147 Front Cover ......................................................................................................................... 150 Right Cover ......................................................................................................................... 153 Ink Cartridge Cover .............................................................................................................. 156 Left Cover ........................................................................................................................... 158 Roll Cover ........................................................................................................................... 160 Back Cover ......................................................................................................................... 163 Front Panel .......................................................................................................................... 165 Front Panel Cable ................................................................................................................ 171 Central Cover ...................................................................................................................... 172 Upper-Roll Paper Guide ........................................................................................................ 177 Left Roll Support ................................................................................................................... 180 Right Roll Support ................................................................................................................. 185 Top Cover Sensor ................................................................................................................ 188 Top Cover Sensor Cable ....................................................................................................... 191 Encoder Strip ....................................................................................................................... 193 Ink Cartridge Cover PCA Assembly ........................................................................................ 198 Power Supply ...................................................................................................................... 202 Main PCA ........................................................................................................................... 205 Paper Motor ........................................................................................................................ 211 Encoder PCA and Index ........................................................................................................ 213 Encoder Disk ....................................................................................................................... 217 Trailing Cable ..................................................................................................................... 220 Service Station ..................................................................................................................... 227 Prime Pump ......................................................................................................................... 233 Carriage and Belt ................................................................................................................ 236 Carriage Belt ....................................................................................................................... 243 Right Gear Train Module ...................................................................................................... 245 Starwheel Assembly ............................................................................................................. 247 Output Shaft ........................................................................................................................ 249 Output Tray ......................................................................................................................... 257 Multi-Sheet Tray Assembly ..................................................................................................... 260 Multi-Sheet Tray Assembly Extensions ..................................................................................... 261 Output Platen ...................................................................................................................... 263 Carriage Motor ................................................................................................................... 268 Cutter Assembly ................................................................................................................... 272 Cutter Guide ....................................................................................................................... 279 Out-Of-Paper Sensor ............................................................................................................. 281 Out-Of-Paper Sensor Cable 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Output Tray Sensor Assembly ................................................................................................ 286 Output Tray Extender Sensor Cable ........................................................................................ 289 Carriage Line Sensor ............................................................................................................ 293 Bundle Board ...................................................................................................................... 297 Bundle Board FFC cable ....................................................................................................... 299 Pinchwheels ........................................................................................................................ 304 Left Spittoon ........................................................................................................................ 310

6 Preventive maintenance ............................................................................................... 313

Preventive maintenance ........................................................................................................ 314 Preventive maintenance kits ................................................................................................... 320

7 Appendices ................................................................................................................... 323

Important links ..................................................................................................................... 324 Front-panel home screen and menu map ................................................................................. 325 Support menu tree ................................................................................................................ 335 Extended Support menu tree .................................................................................................. 336 How to check whether your computer is connected to your network ............................................ 337 Wireless troubleshooting report error cases ............................................................................. 340 CSR fliers ............................................................................................................................ 351 ENWW ix

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