HP Designjet 4000 Series

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Print Quality 6-2
Print Quality Troubleshooting Actions 6-2
Choosing the Correct Print Quality Settings 6-3
How to Use the Service Image Quality Diagnostic Print 6-5
What is the Service Image Quality Diagnostic Print? 6-5
Considerations for Printing the Diagnostic Print 6-5
Printing the Service Image Quality Diagnostic Print 6-6
Diagnostic Part 1: Alignment Test 6-7
Diagnostic Part 2: Printheads & Paper Advance Test 6-8
Diagnostic Part 3: Printhead Problems 6-9
Nozzle Print Test 6-11
No Printing Defects Found in the Diagnostic Print 6-12
Print Quality General Advice 6-12
Troubleshooting Print Quality Problems 6-13
Horizontal Lines Across the Image (Banding) 6-13
Advanced Banding Troubleshooting for Experts 6-14
Dark Light Zone Banding (DLZB) 6-17
Lines are Missing or Thinner than Expected 6-18
Solid Bands or Lines Printed Over the Image 6-19
Problems with Graininess 6-20
Print Smudges when Touched 6-20
Paper is not Flat 6-21
Defect Near the Top of the Print 6-22
Problems with Stepped Lines 6-23
Lines are Printed Double or in Wrong Colors 6-23
Lines are Blurred (Ink Bleeds from Lines) 6-24
Problems with Color Accuracy 6-24
Problems with PANTONE Color Accuracy 6-25
Color Matching Between Different HP Designjet Printers 6-26
Problems with Image Clipping 6-28
Image is Completely Blank 6-29
Output Only Contains a Partial Print 6-29
Image is in One Portion of the Printing Area 6-30
Image is Unexpectedly Rotated (PostScript Driver) 6-30
Print is Distorted or Unintelligible 6-31
Print is a Mirror Image of the Original 6-31
One Image Overlaps Another on the Same Sheet 6-31
No Output from the Printer 6-32
Pinchwheel Marks when using Glossy Media 6-32
VLS in 1 Pass Printmodes 6-33
VLS in First 3 Meters after a Media Load 6-34
Bubbles (Only occurs in Cyan, Magenta and Yellow) 6-34
Black Printhead: Decap Problem 6-35
Paper Expansion - Paper Advance (PEPA) 6-36
Bidirectional Offset in Light Color Density Areas 6-37
Ink Contamination on Yellow Printhead 6-37
Satellites in Black Lines 6-38