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HP 4000 User Manual
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8-138
Removal and Installation
HP Designjet 4000/4020 Printer Series Service Manual
7.
Re
lease the Encoder S
ensor cable f
r
om the
clip lo
cated on the Encode
r Disc C
o
ve
r
.
8.
Unc
lip the Encoder Disc Co
ver and r
emov
e
from t
he
P
rint
er
.
9.
Re
move
on
e
T-8
screw (
Ty
p
e
D
) that
sec
ures the Encoder Sensor t
o the Chassis
.
389
391
Table of Contents
Purpose
4
Readership
4
Part Numbers
4
Conventions
4
Table of Contents
5
Troubleshooting
7
Introduction
8
Troubleshooting System Error Codes
8
Performing a Service Test on a Failed Assembly
8
Performing the Necessary Service Calibrations
9
Solving Print Quality Problems
9
The Printer does not Power ON
9
The Printer Continuously Rejects Printheads
9
Cover Sensors are not Working
9
The Line Sensor has Problems Detecting Media
10
Troubleshooting Media Jams/Printhead Crashes
10
Troubleshooting Shutdowns
11
Vacuum suction much lower at high altitudes
12
Banding at variable extreme environmental conditions
12
Printhead Crashes/Smears on High Density Prints Using Coated Media
12
Banding due to Ink Cartridge replacement while printing
13
34" Rice Paper not supported
13
Cut Sheet rice paper loading failure
13
Worm marks on HP Coated media with light area fills
13
Solving Media-Handling Problems
14
Using the Power-up Sequence to Troubleshoot
17
Using the Power Switch LEDs to Troubleshoot
20
Using the PCA LEDs to Troubleshoot
21
How to Interpret the Service Information Pages
24
Current Media, Printhead and Ink Information
25
Printer Usage Information
27
Event Logs
30
Calibrations Status
31
System Error Codes
33
Introduction
34
Continuable and Non-Continuable Error Codes
34
System Error Codes and Warnings - Explanation
57
System Error Codes
33
Ink Supplies Troubleshooting
61
What are Ink Supplies?
62
Ink Cartridges
62
Printheads
63
Printhead Cleaners
63
General Information About the Ink Supplies
64
General Precautions When Handling Ink Supplies
64
Priming the Ink System
65
When Should You Replace the Ink Supplies?
65
Obtaining Ink Cartridge Information
66
Obtaining Printhead Information
67
Ink Cartridge Status Messages
69
Ink Cartridge Status While Printing
69
Ink Cartridge Status While Replacing
69
Printhead Status Messages While Printing
70
Printhead Status Messages While Replacing
70
Printhead Cleaner Status Messages While Printing
71
Printhead Cleaner Status Messages While Replacing
71
Summary of Solving Ink Supplies Problems
72
Troubleshooting Printhead Error Codes
73
Carriage Interconnect Wiper
74
Warranty Information for Ink Supplies
75
Warranty Information for Printheads
75
Diagnostic Tests and Utilities
77
Diagnostics - Self Test
78
Phone Support
78
Entering the Diagnostics Tests Menu
81
1. Scan Axis Test
83
2. Media Drive Test
88
3. Electronics Module Test
93
4. Carriage Assembly Test
103
5. Sensors Test
104
6. Ink Delivery System Test
108
7. SVS/Aerosol Fan Test
109
8. Air Pump System Test (firmware 10.1.1.4)
110
9. Vacuum Fans Test
112
10.1 Others >>> Bag Broken Recovery
113
10.2 Others >>> IO Information
116
10.3 Others >>> Unit Information
117
10.4 Others >>> Check Ink Supplies
119
10.5 Others >>> Enable Connectivity
121
11. EEROM Reset
122
12. Set Unit Configuration
124
13. Error 71:19 Recovery
125
14. I/O Tests
127
15. Log Management
129
Entering the Service Utilities Menu
133
1. Turn Drive Roller
135
2. Prime Tubes
137
3. Set SN
141
4. Reset Life Counters
142
5. Diagnostic Print
144
6. Sleep Mode
145
7. Replace Cutter
146
8. Set RTC Clock
147
9. PHC Maintenance
148
10. Media standby behavior
150
11. Backup print mode
152
12. Sanitize Level
153
13. Disk Wipe
155
Service Calibrations
157
Entering the Service Calibrations Menu
159
1. Scan Axis Calibration
160
2. Service Station Calibration
164
3. Paper Advance Calibration
165
4. Drop Detector Calibration
171
5. Line Sensor Calibration
172
6. Platen Blue Line Calibration
176
7. Vacuum Calibration
178
8. Carriage PCA Calibration
179
Print Quality
181
Print Quality Troubleshooting Actions
182
Choosing the Correct Print Quality Settings
183
What is the Service Image Quality Diagnostic Print?
185
Considerations for Printing the Diagnostic Print
185
Printing the Service Image Quality Diagnostic Print
186
Diagnostic Part 1: Alignment Test
187
Diagnostic Part 2: Printheads & Paper Advance Test
188
Diagnostic Part 3: Printhead Problems
189
Nozzle Print Test
191
No Printing Defects Found in the Diagnostic Print
192
Print Banding Plot
192
Force Drop Detection Tool
194
In order to fix this, it may have to be run up to four times, if it is still failing, the drop detector may be faulty or incorrectly calibrated.
195
Some things to check that can improve image quality
195
Print Quality General Advice
195
Horizontal Lines Across the Image (Banding)
196
Advanced Banding Troubleshooting for Experts
197
Dark Light Zone Banding (DLZB)
200
Lines are Missing or Thinner than Expected
201
Solid Bands or Lines Printed Over the Image
202
Problems with Graininess
203
Print Smudges when Touched
203
Paper is not Flat
204
Defect Near the Top of the Print
205
Problems with Stepped Lines
206
Lines are Printed Double or in Wrong Colors
206
Lines are Blurred (Ink Bleeds from Lines)
207
Problems with Color Accuracy
207
Problems with PANTONE Color Accuracy
208
Color Matching Between Different HP Designjet Printers
209
Problems with Image Clipping
211
Image is Completely Blank
212
Output Only Contains a Partial Print
212
Image is in One Portion of the Printing Area
213
Image is Unexpectedly Rotated (PostScript Driver)
213
Print is Distorted or Unintelligible
214
Print is a Mirror Image of the Original
214
One Image Overlaps Another on the Same Sheet
214
No Output from the Printer
215
Pinchwheel Marks when using Glossy Media
215
VLS in 1 Pass Printmodes
216
VLS in First 3 Meters after a Media Load
217
Bubbles (Only occurs in Cyan, Magenta and Yellow)
217
Black Printhead: Decap Problem
218
Paper Expansion - Paper Advance (PEPA)
219
Bidirectional Offset in Light Color Density Areas
220
Ink Contamination on Yellow Printhead
220
Satellites in Black Lines
221
Parts and Diagrams
223
Removal and Installation
253
Introduction
254
Safety Precautions
254
Electrostatic Discharge (ESD) Precautions
254
Required Tools
255
Screw Types
255
Window
256
Removal
256
Installation of New Window
257
Right Cover
258
Removal
258
Left Cover
261
Removal
261
Top Cover
263
Removal
263
Rear Door
268
Removal
268
Right Connector Cover
270
Removal
270
Left Connector Cover
271
Removal
271
Front Panel
272
Removal
272
Service Station
275
Removal
275
Removal of the Service Station Scraper
278
Vacuum Fan
279
Removal
279
Aerosol Fan
281
Removal
281
Drop Detector
283
Removal
283
Trailing Cables
285
Removal
285
Ink Supply Tubes
298
Removal
298
ISS to Cartridge Cables
310
Removal
310
Cutter Assembly
311
Removal
311
Ink Supply Station (ISS)
312
Removal
312
APS Assembly
314
Removal
314
Installation for printers with the serials numbers before SG6A9H900Z and SG6ABH9014
315
Removal for printers with the serial numbers SG6A9H900Z and SG6ABH9014 and onwards
319
Installation for printers with the serial numbers SG6A9H900Z and SG6ABH9014 and onwards
320
Most Left Spittoons
322
Removal
322
Middle Left Spittoons
323
Removal
323
Encoder Strip and Encoder Sensor
324
Removal
324
Carriage PCA
327
Removal
327
Installation
329
Carriage Flex Cables
332
Removal
332
Carriage Assembly
334
Removal
334
Belt Assembly
339
Removal
339
Scan-Axis Motor
340
Removal
340
Media-Axis Motor
343
Removal
343
Interconnect PCA
345
Removal
345
EIO to PCA Interface Card
348
Removal
348
Gamut PCI PCA
350
Removal
350
Memory Module
355
Removal
355
Main PCA Formatter
357
Removal
357
CPU Fan
359
Removal
359
Delta Fan Installation
360
AAvid Fan Installation
361
Hard Disk Drive (HDD)
363
Removal
363
Power Supply Unit (PSU)
365
Removal
365
PrintMech PCA
371
Removal
371
Formatter Battery
374
Removal
374
Line Sensor Assembly
376
Removal
376
Media Deflector
378
Removal
378
Front Platen
379
Removal
379
Center Platen
381
Removal
381
Installation of the Foams
384
Cartridge Trays
385
Removal
385
Input Roller
386
Removal
386
Media Sensor
387
Removal
387
Encoder Disc and Sensor
389
Removal
389
Media Lever Assembly
392
Removal
392
Media Lever Sensor
394
Removal
394
Pinchwheel Assembly
397
Removal
397
Removing individual Pinchwheels
399
Important Information on Installation of Pinchwheels
400
Center Guide
401
Removal
401
Drive Roller
404
Removal
404
Installation of the Drive Roller
408
Right Rollfeed Module Assembly
411
Removal
411
Installation
412
Right Spindle Lever
414
Removal
414
Installation
415
Preventive Maintenance
417
Moisture on the Printer
418
Noisy Carriage Bushing
418
Belt Swelling
418
Cleaning the Printer
418
General Cleaning
418
Cleaning the Drive Roller and Overdrive
419
Cleaning the Center Platen
419
Applying Oil to the Overdrive
421
Lubricating the Carriage Assembly
421
Scheduled Maintenance
422
Level of Printer Usage
422
Other manuals for HP 4000
Getting Started Guide
30 pages
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HP 4000 Specifications
General
Brand
HP
Model
4000
Category
Printer
Language
English
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