HP B8C95AA Manual de usuario Pagina 19
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HP Designjet T Series — Service Manual 1-15
Print quality troubleshooting
In high quality modes, graininess in ALL colors can indicate problems
either with alignment or Paper Advance.
Corrective Action
In order to solve problems that result in banding, try the following:
1 Check that the appropriate print quality settings are being used (refer to the
U
ser’s Guide for more information).
2 Check that the loaded media is the same type as selected in the printer. You
can
verify the media type selected through the Front Panel (Main Menu/
Paper menu/View loaded paper).
3 If
the customer is using low quality paper, try recommending better quality
pa
per (preferably HP paper). Printer performance can only be guaranteed
by using recommended papers.
4 P
erform the Paper Advance Calibration using the same type of paper that
w
ill be used for the final print (Main Menu/Image Quality Maintenance/
Paper Advance Calibration/Calibrate Paper Advance).
If there is white point banding in on
ly one color band and the problem
cannot be fixed using the Printhead recoveries, in some cases using the force
a drop detection option can fix this issue. See
Force Drop Detection on page
1-24.
No Printing Defects Found in the Diagnostic Print
If all the test patterns from the Diagnostic Print are correct and you still
exper
ience Image Quality problems, you can use the following procedures
to resolve the problem.
Reading the Advanced diagnostic Print Results
Printhead Alignment
Nozzle Health
Force Drop Detection
The Advanced Diagnostic Prints
What are the Advanced Diagnostic Prints?
Advanced Diagnostic Plot.
These tests provide more information of the IQ
defects found in the Image Quality Service plot.
The Advanced Diagnostic Plot is di
vided into the following parts:
Visual Media Advanced Diagnostic. Used to check advance reliability.
Printhead Alignment Diagnostic. Used to check pen alignment reliability.
Visual Nozzle health Diagnostic. Used to check nozzle health reliability.
Force Drop Detection. Used to reset the nozzle health historic data base
and force new drop detection.
- Table of Contents 1 3
- Using this Manual 4
- Troubleshooting 1 5
- General Troubleshooting 8
- 5. Sensors on page 3-31 9
- Print quality troubleshooting 13
- (Main Menu/ 21
- Ink Supplies Troubleshooting 43
- HP 72 69 ml Photo Black Ink 44
- Cartridge 44
- Solving Ink Supplies Problems 57
- 1System Error Codes 1 61
- PCA and Formatter 63
- Reading a System Error Code 64
- System Error Code Table 64
- Corrective Actions Table 66
- 08:YZ (T1120/T1120ps ONLY) 70
- *Flashing* 71
- 71:04 (T610 printers ONLY) 82
- 75.21:YZ 87
- 75.22:YZ 88
- Possible causes 94
- The printer’s queue 95
- System Error Codes 108
- Service Tests and Utilities 2 109
- Introduction 110
- Service Tests (Diagnostics) 111
- Using the Front Panel 113
- 1. Scan Axis 114
- System Error Code 42:XZ 115
- System Error Code 47:XZ 115
- System Error Code 73:XZ 115
- 2. Paper Drive 126
- 3. Electronics Module 129
- Starting DelSol1 131
- Getting PCA revision 131
- Getting Memory Size 131
- Getting HDA info 132
- Getting File System Info 132
- Getting MainBoard Rev 132
- Getting Main Memory Size 132
- Starting Micci2Bus 133
- Starting Micci2BusProxy 133
- Checking Communications 133
- 4. Carriage Assembly 134
- 5. Sensors 139
- 6. Rewinder 142
- 7. Ink Delivery System (IDS) 144
- Starting AcumenSupplies 146
- Reading AcumenSupplies 146
- 8. Service Station 150
- Capping Service Station 152
- Starting Nvm 154
- Starting TestsGpio 154
- Getting Part number 154
- Reading Aerosol Fan 154
- Turning on Aerosol Fan 155
- Checking Fault condition 155
- 9. I/O Information 156
- 10. Unit Information 157
- 11. EEROM Reset 158
- 12. Set Unit Configuration 159
- 13. Error 71:19 Recovery 159
- 14. Others 163
- Service Utilities 164
- 1. Turn Drive Roller 166
- 2. Purge Tubes 168
- 3. Set SN 170
- 4. Reset Life Counters 171
- 5. Diagnostic Print 173
- 6. Set Date and Time 173
- 7. Enable/Disable Firewall 174
- 8. Reset User Life Counters 175
- 9. Enable/Disable Sleep Mode 176
- 10. Disk Wipe DoD 5220.22OM 177
- 11. SNMP 179
- 12. New Left Spittoon 180
- 14. Enable/Disable Port 280 181
- Service Tests 183
- 1. Test Messages 184
- 2. I/O Tests 184
- Service Tests and Utilities 186
- Service Calibrations 3 187
- Service Calibrations 188
- Scan Axis Calibration 190
- Service Station Calibration 191
- Paper Advance Calibration 192
- Advancing Paper 195
- Printing Pattern 195
- Drop Detector Calibration 198
- Line Sensor Calibration 201
- Carriage PCA 204
- Parts and Diagrams 4 205
- Printer Support 206
- Figure 5-1: Printer Support 207
- Center Covers (Front) 208
- Center Covers (Rear) 210
- Right Cover 212
- Figure 5-4: Right Cover 213
- Left Cover 214
- Figure 5-5: Left Cover 215
- Right Hand Assemblies 216
- Left Hand Assemblies 218
- Paper Path Assemblies (Rear) 230
- Tool Kits 232
- Figure 5-14: Tool Kits 233
- Miscellaneous Parts 234
- New Formatter Design 235
- Parts and Diagrams 236
- Removal and Installation 5 237
- Required Tools 240
- Bin Assembly 246
- Front Cover 252
- Media Output Assembly 253
- Removal and Installation 254
- Right Front Trim 255
- Left Front Trim 257
- Right Ink Cartridge Door 259
- Left Ink Cartridge Door 261
- 8. Unclip the Right Trim 265
- Rear Tray 271
- Rear Cover 272
- Media Lever 273
- Media Lever Position Sensor 276
- Cutter Assembly 278
- Right Rear Tray Support 279
- Left Rear Tray Support 281
- Front Panel 283
- Top Cover 286
- Window Position Sensor 289
- Drop Detector 305
- T1120/T1120ps printers 307
- Left Spindle Holder 316
- Installation 321
- Clean Out Assembly 326
- Out Of Paper Sensor 327
- Left Roll Guide 330
- Right Roll Guide 331
- T1100ps/T610) 332
- Encoder Strip 337
- Carriage Rear Bushing 373
- 6. Remove the left bumper 376
- Belt Assembly 377
- Carriage Rail Oiler 386
- Line Sensor (T1120/T1120ps) 393
- Carriage PCA (T1120/T1120ps) 414
- Left Ink Supply Station 419
- Formatter 436
- Starwheel Assembly 444
- Print Zone Overdrive 446
- Left Spittoon 450
- Media Advance Drive 454
- Pinchwheel Assembly 465
- Left Starwheel Lifter 473
- Starwheel Motor 481
- Full Bleed Foam 483
- Preventive Maintenance 5 485
- Preventive Maintenance 486
- General Cleaning 487
- Level of Printer Usage 487
- Preventive Maintenance Kits 489
- Preventive Maintenance Kit #2 490
- Preventive Maintenance Kit #3 490
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