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HP DesignJet 4500/4520 printer series service manual

CM768A Service Manual View Service Manual

Table of Contents

Conventions
Part Numbers
Table of Contents
Troubleshooting
Introduction
Performing a Service Test on a Failed Assembly
Troubleshooting System Error Codes
Cover Sensors are not Working
Performing the Necessary Service Calibrations
Solving Print Quality Problems
The Printer Continuously Rejects Printheads
The Printer does not Power ON
The Line Sensor has Problems Detecting Media
Troubleshooting Media Jams/Printhead Crashes
Troubleshooting Shutdowns
Banding at variable extreme environmental conditions
Printhead Crashes/Smears on High Density Prints Using Coated Media
Vacuum suction much lower at high altitudes
34" Rice Paper not supported
Banding due to Ink Cartridge replacement while printing
Cut Sheet rice paper loading failure
Vertical lines are not straight
Worm marks on HP Coated media with light area fills
Problems Loading Media into Roll Module 2
Problems loading sheet media
Using the Power Switch LEDs to Troubleshoot
Using the PCA LEDs to Troubleshoot
How to Interpret the Service Information Pages
Current Media, Printhead and Ink Information
Printer Usage Information
Event Logs
Calibrations Status
System Error Codes
System Error Codes
Continuable and Non-Continuable Error Codes
Introduction
Printer System Error Codes
Stacker System Error Codes
Stacker System error codes detected by the Stacker.
System Error Codes and Warnings - Explanation
Ink Supplies Troubleshooting
Ink Cartridges
What are Ink Supplies?
Printhead Cleaners
Printheads
General Information About the Ink Supplies
General Precautions When Handling Ink Supplies
Priming the Ink System
When Should You Replace the Ink Supplies?
Obtaining Ink Cartridge Information
Obtaining Printhead Information
Ink Cartridge Status Messages
Ink Cartridge Status While Printing
Ink Cartridge Status While Replacing
Printhead Status Messages While Printing
Printhead Status Messages While Replacing
Printhead Cleaner Status Messages While Printing
Printhead Cleaner Status Messages While Replacing
Summary of Solving Ink Supplies Problems
Troubleshooting Printhead Error Codes
Carriage Interconnect Wiper
Warranty Information for Ink Supplies
Warranty Information for Printheads
Diagnostic Tests and Utilities
Diagnostics - Self Test
Phone Support
Entering the Diagnostic Menu
1. Scan Axis Test
2.1 Media Drive Test
2.2 BT Arm Test
3. Electronics Module Test
4. Carriage Assembly Test
5. Sensors Test
6. Ink Delivery System Test
7. SVS/Aerosol Fan Test
8. Air Pump System Test (firmware 10.1.1.4)
9. Vacuum Fans Test
10.1 Others >>> Bag Broken Recovery
10.2 Others >>> IO Information
10.3 Others >>> Unit Information
10.4 Others >>> Check Ink Supplies
10.5 Others >>> Roll Module Config
10.6 Others >>> Stacker Test
10.7 Others >>> Enable Connectivity
11. EEROM Reset
12. Set Unit Configuration
13. Error 71:19 Recovery
14. I/O Tests
15. Log Management
Entering the Service Utilities Menu
1. Turn Drive Roller
2. Prime Tubes
3. Set SN
4. Reset Life Counters
5. Diagnostic Print
6. Sleep Mode
7. Replace Cutter
8. Set RTC Clock
9. PHC Maintenance
10. Media standby behavior
11. Backup print mode
12. Feed Roller Material Change
13. Sanitize Level
14. Disk Wipe
Service Calibrations
Entering the Service Calibrations Menu
1. Scan Axis Calibration
2. Service Station Calibration
3. Paper Advance Calibration
4. Drop Detector Calibration
5. Line Sensor Calibration
6. Vacuum Calibration
7. Carriage Setup
Print Quality
Print Quality Troubleshooting Actions
Choosing the Correct Print Quality Settings
Considerations for Printing the Diagnostic Print
What is the Service Image Quality Diagnostic Print?
Printing the Service Image Quality Diagnostic Print
Diagnostic Part 1: Alignment Test
Diagnostic Part 2: Printheads & Paper Advance Test
Diagnostic Part 3: Printhead Problems
Nozzle Print Test
Horizontal Lines Across the Image (Banding)
Advanced Banding Troubleshooting for Experts
Dark Light Zone Banding (DLZB)
No Printing Defects Found in the Diagnostic Print
Print Banding Plot
Force Drop Detection Tool
Here are some things to check which can improve image quality:
Print Quality General Advice
Lines are Missing or Thinner than Expected
Solid Bands or Lines Printed Over the Image
Print Smudges when Touched
Problems with Graininess
Paper is not Flat
Defect Near the Top of the Print
Lines are Printed Double or in Wrong Colors
Problems with Stepped Lines
Lines are Blurred (Ink Bleeds from Lines)
Problems with Color Accuracy
Problems with PANTONE Color Accuracy
Color Matching Between Different HP Designjet Printers
Problems with Image Clipping
Image is Completely Blank
Output Only Contains a Partial Print
Image is in One Portion of the Printing Area
Image is Unexpectedly Rotated (PostScript Driver)
One Image Overlaps Another on the Same Sheet
Print is a Mirror Image of the Original
Print is Distorted or Unintelligible
No Output from the Printer
Pinchwheel Marks when using Glossy Media
VLS in 1 Pass Printmodes
Bubbles (Only occurs in Cyan, Magenta and Yellow)
VLS in First 3 Meters after a Media Load
Black Printhead: Decap Problem
Paper Expansion - Paper Advance (PEPA)
Bidirectional Offset in Light Color Density Areas
Ink Contamination on Yellow Printhead
Satellites in Black Lines
Parts and Diagrams
Printer
Stacker
Removal and Installation
Electrostatic Discharge (ESD) Precautions
Safety Precautions
Required Tools
Screw Types
Removal
Installation of New Window
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal of the Service Station Scraper
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Installation for printers with the serials numbers before SG6ABH9014
Removal for printers with the serial numbers SG6ABH9014 and onwards
Installation for printers with the serial numbers SG6ABH9014 and onwards
Removal
Removal
Removal
Removal
Installation
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Delta Fan Installation
AAvid Fan Installation
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Installation of the Foams
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Installation of the Drive Roller
Removal
Removal
Removal
Removal
Removal
Removing the Spindle Support
Removing the obsoleted parts
Installation
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Installation
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Removal
Preventive Maintenance
Belt Swelling
Cleaning the Printer
General Cleaning
Moisture on the Printer
Noisy Carriage Bushing
Cleaning the Center Platen
Cleaning the Drive Roller and Overdrive
Applying Oil to the Overdrive
Lubricating the Carriage Assembly
Level of Printer Usage
Scheduled Maintenance
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