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HP DesignJet 4000 printer series service manual

Q1274A 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
Worm marks on HP Coated media with light area fills
Solving Media-Handling Problems
Using the Buzzer at Power-up to Troubleshoot
Using the Power-up Sequence to Troubleshoot
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
Continuable and Non-Continuable Error Codes
Introduction
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
Service Tests and Utilities
Diagnostics - Self Test
Phone Support
Entering the Service Tests Menu
1. Scan Axis Test
2. Media Drive 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
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
11. EEROM Reset
12. Set Unit Configuration
13. Error 71:19 Recovery
I/O Tests
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. Carriage Setup
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. Platen Blue Line Calibration
7. Vacuum Calibration
8. 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
No Printing Defects Found in the Diagnostic Print
Print Quality General Advice
Horizontal Lines Across the Image (Banding)
Advanced Banding Troubleshooting for Experts
Dark Light Zone Banding (DLZB)
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
Removal and Installation
Introduction
Electrostatic Discharge (ESD) Precautions
Safety Precautions
Required Tools
Screw Types
Window
Removal
Installation of New Window
Right Cover
Removal
Left Cover
Removal
Top Cover
Removal
Rear Door
Removal
Right Connector Cover
Removal
Left Connector Cover
Removal
Front Panel
Removal
Service Station
Removal
Removal of the Service Station Scraper
Vacuum Fan
Removal
Aerosol Fan
Removal
Drop Detector
Removal
Ink Supply Tubes and Trailing Cable
Removal
Installation of the Ink Supply Tubes and Trailing Cable
ISS to Cartridge Cables
Removal
Cutter Assembly
Removal
Ink Supply Station (ISS)
Removal
APS Assembly
Removal
Most Left Spittoons
Removal
Middle Left Spittoons
Removal
Encoder Strip and Encoder Sensor
Removal
Carriage PCA
Removal
Carriage Flex Cables
Removal
Carriage Assembly
Removal
Belt Assembly
Removal
Scan-Axis Motor
Removal
Media-Axis Motor
Removal
Interconnect PCA
Removal
EIO to PCA Interface Card
Removal
Gamut PCI PCA
Removal
Memory Module
Removal
Main PCA Formatter
Removal
Hard Disk Drive (HDD)
Removal
Power Supply Unit (PSU)
Removal
PrintMech PCA
Removal
Formatter Battery
Removal
Line Sensor Assembly
Removal
Media Deflector
Removal
Front Platen
Removal
Center Platen
Removal
Installation of the Foams
Cartridge Trays
Removal
Input Roller
Removal
Push-Push Mechanism
Removal
Media Sensor
Removal
Encoder Disc and Sensor
Removal
Media Lever Assembly
Removal
Media Lever Sensor
Removal
Pinchwheel Assembly
Removal
Removing individual Pinchwheels
Important Information on Installation of Pinchwheels
Center Guide
Removal
Drive Roller
Removal
Installation of the Drive Roller
Right Rollfeed Module Assembly
Removal
Installation
Right Spindle Lever
Removal
Installation
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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