HP DesignJet T920, DesignJet T1500 Service Manual
Designjet T920, T1500 ePrinter Series and
T2500, T3500 eMultifunction Series
Service Manual
1
Legal notices
Warranty
© 2014 Hewlett-Packard Development
Company, L.P.
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.
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.
Safety
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.
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.
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
5 Parts and diagrams .................................................................................................................................... 184
Introduction ....................................................................................................................................................... 184
Printer support .................................................................................................................................................. 185
Center and Roll covers ....................................................................................................................................... 186
Rear covers ........................................................................................................................................................ 187
Cover Front Panel Side ...................................................................................................................................... 188
Cover SVS Side ................................................................................................................................................... 189
Center Assemblies ............................................................................................................................................. 190
Front Panel Side Assemblies ............................................................................................................................. 191
SVS Side Assemblies .......................................................................................................................................... 192
Scan Axis Assemblies ........................................................................................................................................ 193
Paper Path Assemblies (Front) ......................................................................................................................... 194
Paper Path Assemblies (Center) ........................................................................................................................ 195
Stacker Parts (Rear) .......................................................................................................................................... 197
Stacker Parts (Front) ......................................................................................................................................... 198
Carriage Assembly ............................................................................................................................................. 199
Electrical Parts ................................................................................................................................................... 200
Miscellaneous Parts .......................................................................................................................................... 202
CIS Unit Construction ......................................................................................................................................... 203
Scanner Control Unit ......................................................................................................................................... 204
6 Removal and installation ........................................................................................................................... 207
Parts list; all models .......................................................................................................................................... 208
Parts list; HP Designjet T2500 and T3500 eMultifunction Series only ............................................................ 210
Parts list; HP Designjet T3500 eMultifunction Series only ............................................................................... 211
Introduction ....................................................................................................................................................... 212
Customer Self Repair parts ............................................................................................................................... 214
Service Calibration Guide to Removal and Installation .................................................................................... 215
Main cover (front panel side) ............................................................................................................................ 218
Main cover (service station side) ....................................................................................................................... 220
Center cover (T920 only) ................................................................................................................................... 222
Converger Assembly .......................................................................................................................................... 224
Cleanout ............................................................................................................................................................. 225
Output platen .................................................................................................................................................... 227
Fixed tray cover (Front Panel side) ................................................................................................................... 228
Fixed tray cover (service station side) .............................................................................................................. 229
Arch sidewall cover (front panel side) .............................................................................................................. 230
Arch sidewall cover (service station side) ......................................................................................................... 231
Rear cover .......................................................................................................................................................... 232
Window Sensor .................................................................................................................................................. 233
Open the E-Box .................................................................................................................................................. 235
E-Box fan ........................................................................................................................................................... 238
Jester PCA .......................................................................................................................................................... 240
Power supply unit .............................................................................................................................................. 241
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Hard disk drive ................................................................................................................................................... 243
Engine PCA ......................................................................................................................................................... 244
Formatter PCA ................................................................................................................................................... 245
Front panel ........................................................................................................................................................ 248
Carriage .............................................................................................................................................................. 251
Line Sensor ........................................................................................................................................................ 255
Carriage PCA ...................................................................................................................................................... 256
Rail Oiler Kit ....................................................................................................................................................... 258
PRS Actuator ...................................................................................................................................................... 259
Belt ..................................................................................................................................................................... 261
Encoder Strip ..................................................................................................................................................... 262
Scan Axis Motor ................................................................................................................................................. 264
Drop Detector .................................................................................................................................................... 267
Service Station with Drop Detector ................................................................................................................... 268
Primer Assembly ............................................................................................................................................... 272
ISS (Ink Supply Statino) Front Panel Side ......................................................................................................... 275
ISS SVS Side ....................................................................................................................................................... 278
Ink Tubes and Trailing Cable ............................................................................................................................. 282
Media Sensor ..................................................................................................................................................... 285
Bottom Rewinder Support ................................................................................................................................ 287
Top Rewinder Support ....................................................................................................................................... 289
Top Tip Support ................................................................................................................................................. 291
Bottom Tip Support ........................................................................................................................................... 292
Vertical Media Guide .......................................................................................................................................... 294
Center Support .................................................................................................................................................. 296
Full Bleed ........................................................................................................................................................... 297
Auto Pinch Lifter ................................................................................................................................................ 298
Pinch Wheel Assembly ...................................................................................................................................... 303
Motor Media Advance Transmission with Encoder ........................................................................................... 305
Starwheel Motor ................................................................................................................................................ 313
Starwheel Support ............................................................................................................................................. 318
Second Starwheel Rail ....................................................................................................................................... 320
Overdrive ........................................................................................................................................................... 322
Cutter Platten .................................................................................................................................................... 324
Sensor Valves .................................................................................................................................................... 326
Valves Motor ...................................................................................................................................................... 329
Stacker ............................................................................................................................................................... 330
Stacker adaptor for MFP ................................................................................................................................... 332
Stacker Pinches ................................................................................................................................................. 336
Stacker Hand Off ............................................................................................................................................... 337
Stacker Hand Off Assy Service Kit (CR357-67041) ........................................................................................... 338
OPTO Sensor ...................................................................................................................................................... 341
REDI sensor ........................................................................................................................................................ 343
OVD Transmission with Motor ........................................................................................................................... 344
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Ramps Motor ..................................................................................................................................................... 346
Stacker Arm Sensor ........................................................................................................................................... 348
Bump Cutter Actuator ........................................................................................................................................ 350
How to release Service Station Caps ................................................................................................................. 351
How to manually move Valves .......................................................................................................................... 352
How to manually move Stacker Ramps ............................................................................................................ 353
Scanner Controller Unit (SUP) ........................................................................................................................... 354
CIS Tiles .............................................................................................................................................................. 355
CIS Modules ........................................................................................................................................................ 356
CIS FFC Cables .................................................................................................................................................... 357
CIS Glass ............................................................................................................................................................. 358
Stepper Motor Assembly (taco sensor, and belt) ............................................................................................. 359
Stepper Motor Assembly (cable) ....................................................................................................................... 361
Paper and Lid Sensors ....................................................................................................................................... 362
Paper and Lid Sensor Cable ............................................................................................................................... 364
USB & Awake / Power Cable .............................................................................................................................. 365
CIS Bridge Damper ............................................................................................................................................. 367
CIS Scanner Latch .............................................................................................................................................. 369
Pressure Rollers ................................................................................................................................................ 370
Front panel side scanner cover ......................................................................................................................... 371
Service station side scanner cover .................................................................................................................... 372
Rear scanner cover ............................................................................................................................................ 373
Bumper bracket ................................................................................................................................................. 374
Deflector hinge .................................................................................................................................................. 375
Lift assembly ..................................................................................................................................................... 376
Scanner front beam bumper assembly ............................................................................................................ 377
Scanner latch hook assembly ........................................................................................................................... 378
Top scanner cover ............................................................................................................................................. 379
Batch scanning piece ......................................................................................................................................... 380
7 Maintenance ............................................................................................................................................. 381
Preventive Maintenance .................................................................................................................................... 382
Preventive Maintenance Kits ............................................................................................................................. 388
8 Customer Self Repair Flyers ........................................................................................................................ 389
viii ENWW
1 Printer fundamentals
●
Introduction
●
Theory of operation
ENWW 1
Introduction
This service manual contains information necessary to test, maintain, and service the following:
●
HP Designjet T920 ePrinter
●
HP Designjet T920 PostScript ePrinter
●
HP Designjet T1500 ePrinter
●
HP Designjet T1500 PostScript ePrinter
●
HP Designjet T2500 eMultifunction
●
HP Designjet T2500 PostScript eMultifunction
●
HP Designjet T3500 Production eMultifunction
●
HP Designjet T3500 Production PostScript eMultifunction
For information about using these printers, see the user's guide.
Features overview
There are 6 versions of the HP Designjet T920-T1500–T2500–T3500 series:
●
CR354A HP Designjet T920 36-in ePrinter
●
CR355A/B HP Designjet T920 36-in PostScript ePrinter
●
CR356A HP Designjet T1500 36-in ePrinter
●
CR357A/B HP Designjet T1500 36-in PostScript
●
CR358A HP Designjet T2500 eMultifunction
●
CR358A/B HP Designjet T2500 PostScript eMultifunction
●
B9E24A/B HP Designjet T3500 Production eMFP
NOTE: As of August 2013 there are no plans for an upgrade to enable PostScript features from non-
PostScript capabilities.
The different sku features are:
Feature CR354A HP
Designjet T920
36-in ePrinter
Paper source One 36-in roll, and single sheets Two 36-in rolls, and single sheets
CR355A/B HP
Designjet T920
36-in PostScript
ePrinter
CR356A HP
Designjet T1500
36-in ePrinter
CR357A/B HP
Designjet T1500
36-in PostScript
CR358A HP
Designjet T2500
eMultifunction
and CR358A/B
HP Designjet
T2500
PostScript
eMultifunction
B9E24A/B HP
Designjet T3500
Production
eMFP
Paper output Stacker, accepting up to 50 A1 plain-paper sheets, and basket
Connectivity Gigabit Ethernet LAN (1000 base T)
One USB HS host connector in the front panel, for USB flash drives
IPv4, IPv6, IPSec, TCP9100, LPR, DHCP, AutoIP/Zeroconf, Bonjour, SNMP/v3, Airprint
Web services Automatic firmware upgrade, HP Designjet ePrint & Share, printing by email
2 Chapter 1 Printer fundamentals ENWW
Feature CR354A HP
Designjet T920
36-in ePrinter
Speed Line-drawing, fast, plain paper: 21.6 s mono or color on A1&D
Color image, normal, plain paper: 69 s on A1&D
Color image, best, glossy paper: 246 s on A1&D
Resolution Up to 2400×1200 optimized dpi from 1200×1200 input ppi
Memory 1.5GB RAM (2.5GB RAM T3500);1GB in Formatter and 512MB in Engine PCA), 320 GB hard disk, 32 GB Dedicated
file-processing memory, 32GB (T920 series), 64 GB (T1500 series), and 128 GB (T2500 and T3500 series), Virtual
Memory
Supplies Off-axis ink cartridges:
●
Introductory supplies: 69 ml (40 ml T3500) matte black, photo black, gray, cyan, magenta, yellow
●
Replacement supplies: 69 ml / 300 ml (130 ml T3500) matte black, for other colors 40 ml / 130 ml; photo
black, gray, cyan, magenta, yellow
●
Can be replaced by the customer
One printhead for all colors:
CR355A/B HP
Designjet T920
36-in PostScript
ePrinter
CR356A HP
Designjet T1500
36-in ePrinter
CR357A/B HP
Designjet T1500
36-in PostScript
CR358A HP
Designjet T2500
eMultifunction
and CR358A/B
HP Designjet
T2500
PostScript
eMultifunction
B9E24A/B HP
Designjet T3500
Production
eMFP
●
9/8-in length
●
Drop size: 9 pl matte black / 6 pl other inks
●
Can be replaced by the customer
Hardware
differentiation:
Second roll X X X X
Borderless
printing on roll
photo media
Other
differentiations
:
Languages
supported
Virtual Memory
[GB]
X X X X
X X X X
X X X X
HP-GL/2, HPRTL, TIFF, JPEG,
CALS G4, HP PCL
3 GUI, URF
32 32 64 64 128 128
Adobe
PostScript 3,
Adobe PDF
1.7ext3 HPGL/2, HP-RTL,
TIFF, JPEG, CALS
G4, HP PCL 3
GUI, URF
HP-GL/2, HPRTL, TIFF, JPEG,
CALS G4, HP PCL
3 GUI, URF
Adobe PostScript 3, Adobe PDF 1.7ext3 HP-GL/2, HPRTL, TIFF, JPEG, CALS G4, HP PCL 3 GUI, URF
1 job in queue
(last job reprint)
Job queues X X X X X
Job preview
from queue
X
X X X X X
ENWW Introduction 3
Feature CR354A HP
Designjet T920
36-in ePrinter
CR355A/B HP
Designjet T920
36-in PostScript
ePrinter
CR356A HP
Designjet T1500
36-in ePrinter
CR357A/B HP
Designjet T1500
36-in PostScript
CR358A HP
Designjet T2500
eMultifunction
and CR358A/B
HP Designjet
T2500
PostScript
eMultifunction
B9E24A/B HP
Designjet T3500
Production
eMFP
Crop marks and
nesting
EWS job
submmital
Job on-hold for
media
(mummify)
Auto rotate,
automatic blank
area removal
Accounting in
EWS
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 184.
Warning labels
X X X X
X X X X
X X X X X
X X X X X X
X X X X
Electric shock hazard
Hazardous voltage inside the printer (built-in power supply) could result in death or serious
personal injury. See the installation instructions before connecting power. Ensure that the input
voltage is within the printer's rated voltage range. Use only earthed mains outlets and the power
cords supplied by HP with the printer. There are no operator-serviceable parts inside the printer.
Refer servicing to qualified service personnel. Disconnect the power cord before servicing. Voltage
is still present in the built-in power supply after the main switch is turned off.
Double pole/neutral fusing
Electric shock hazard. The built-in power supply incorporates a fuse on each conductor, therefore
the printer could be energized even when one fuse has blown. There are no operator-replaceable
fuses inside. Refer servicing to qualified service personnel. Disconnect the power cord before
servicing.
4 Chapter 1 Printer fundamentals ENWW
Theory of operation
Schematics
Electronics are based on 3 main components:
●
E-box - contains the power supply and all the PCAs (driving the printer), plus the Ethernet port.
●
Carriage PCA - drives the printhead.
●
Front Panel - user interface and USB port.
The following diagram describes the connections between components and electronic boards and the data
line type for T920, T1500 and T2500.
Block Diagram
(HP Designjet T3500 eMultifunction Series only)
ENWW Theory of operation 5
6 Chapter 1 Printer fundamentals ENWW
Block Diagram
(HP Designjet T2500 and T3500 eMultifunction Series only)
Wiring Diagram
(HP Designjet T2500 and T3500 eMultifunction Series only)
Scanner Controller Board Layout (SULG)
(HP Designjet T2500 and T3500 eMultifunction Series only)
Voltage Min limit Max limit
TP1 5V-Main (Always on when there
is power to the board)
TP2 5V 4.75 5.25
TP3 1.2V 1.1 1.3
TP8 3.3V 3.2 3.4
TP6 2.5V 2.4 2.6
TP7 1.8V 1.7 1.9
TP15 0.9V 0.8 1.0
IC201 3.3VLDO 3.1 3.5
ENWW Theory of operation 7
4.75 5.25
Voltage Min limit Max limit
IC203 3.3VLDO 3.1 3.5
IC204 3.3VLDO 3.1 3.5
8 Chapter 1 Printer fundamentals ENWW
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Printer Initialization
There are 3 main blocks to be initialized before the printer can be operated:
Electronic components init
1. The front panel shows a white background and blue HP logo.
12 Chapter 1 Printer fundamentals ENWW
2. The upper LED in the formatter is ON, indicating that the formatter has been initialized.
3. The middle LED in the formatter blinks, indicating that the HDD has been initialized.
NOTE: Steps 2&3 are the same when waking from Sleep Mode except the 3 LEDs are not on but; ON-
Blinking-OFF
OS & Firmware init
1. The OS is loaded into RAM. The Front Panel blinks for a second.
2. If boot up is after a bad power-off, the boot sequence automatically runs a file system check.
a. The Front Panel shows the FSCK, text.
b. First, FSCK runs on the root partition.
c. If FSCK is successful, the OS boots up from the root partition and runs FSCK on the data partition.
3. After FSCK, the OS finishes booting from the HDD.
4. The home button lights up to allow stopping the boot sequence, and entry to the diagnostics menu, see
Diagnostics, Service Utilities and Calibrations on page 132.
Mechanical components init
1. The Front Panel shows a black background with a blue circle in the middle. The “Initializing” message
appears. A progress bar shows the percentage of subsystems that have been initialized.
2. The printer moves the carriage from side to side to validate its position within the scan axis. The printer
initializes the service station, moving the caps from bumper to bumper.
3. The pinches move down into position.
4. T2500 and T3500 only: The printer will initialize the Scanner and start checking it.
5. The carriage and service station move to the home position
6. The printer checks the status of supplies and the printhead, and then initializes the Ink Supply Stations.
ENWW Theory of operation 13
7. Servicing routines are launched. The routines refresh the printhead depending on the time that the
printer has been off. The Front Panel shows “Preparing Print System”.
8. The paper path subsystems are initialized by exercising the ramps and rewinder, checking if there is
media present over the Media Sensor.
9. At the end of the process, the home screen appears in the Front Panel.
Front Panel Menu Map
The following tables show the front panel menu layout.
14 Chapter 1 Printer fundamentals ENWW
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