Epson STYLUS PRO 9400 - Service Manual

Other manuals for Epson STYLUS PRO 9400

Notice Sheet4 pages

Specifications12 pages

Questions and Answers

N
Nathaniel JenkinsSep 6, 2025
What to do if my Epson printer shows 'MISMATCH ERROR MAKE SURE THAT THE INK CARTRIDGE AND DRIVER SETTINGS MATCH'?
- A
  Amy CollierSep 6, 2025
  This error means the cartridge option of the printer driver has not been changed yet, or a non-Epson genuine ink cartridge is installed. Stop printing, and then press and hold the Pause button for 3 seconds. Finally, select the correct ink cartridge in the printer driver according to the actual ink cartridge set on the printer. If you want to continue printing, press the Pause button. If a non-Epson ink cartridge is installed, press the Pause button for 3 seconds to cancel printing or press the Pause button to continue printing.
D
Debra PerryAug 25, 2025
How to fix smudges on Epson printer pages?
- J
  Jonathon FowlerAug 25, 2025
  If smudges appear on your printed pages, clean the rubber rollers in the Epson printer mechanism. This may resolve the issue.
R
rileychoiAug 25, 2025
Why does my Epson printer does not turn on or stay on?
- J
  jack37Aug 26, 2025
  Turn off the printer and make sure the power cord is securely plugged into the printer. Make sure your outlet works and is not controlled by a wall switch or timer. Make sure the supplied voltage to the printer matches the rating voltage labeled on the printer. If not, turn off the printer and unplug the power cord immediately.
J
Jacqueline VaughanSep 14, 2025
What does 'POWER CLEANING YOU MUST MOVE INK LEVERS WHEN CLEANING' mean on my Epson printer?
- S
  sanchezheatherSep 14, 2025
  This message indicates that power cleaning is required. To perform power cleaning, select YES and follow the messages on the LCD.
J
Jeffrey RiveraSep 23, 2025
Why When feeding paper forward on my Epson printer?
- A
  allenloriSep 23, 2025
  Attach the paper guides to the printer so they rest on the front of the paper basket.
K
Kathy FisherSep 10, 2025
What does 'MAINT TANK FULL REPLACE THE LEFT SIDE MAINTENANCE TANK' mean on my Epson STYLUS PRO 9400?
- E
  Eric LongSep 12, 2025
  This message indicates that the left side maintenance tank is full. Replace the left side maintenance tank with a new one.
S
scottclarkSep 2, 2025
How to fix 'INK LEVER LOWER THE LEFT INK LEVER' on my Epson Printer?
- F
  frank17Sep 2, 2025
  This message indicates that the ink lever on the left ink compartment is raised. Lower the ink lever on the left ink compartment.
D
Daniel YoungSep 2, 2025
What to do if my Epson printer says 'INK LEVER LOWER THE RIGHT INK LEVER'?
- I
  icarterSep 2, 2025
  This message indicates that the ink lever on the right ink compartment is raised. Lower the ink lever on the right ink compartment.
Z
Zachary DoughertySep 18, 2025
Why A ruled line shifts on my Epson STYLUS PRO 9400 Printer?
- K
  Kenneth SparksSep 18, 2025
  Perform the print head alignment.
R
Rebecca WellsAug 28, 2025
Why does my Epson STYLUS PRO 9400 Printer say 'MAINTENANCE TANK NEARLY FULL'?
- M
  mayeramyAug 28, 2025
  The message 'MAINTENANCE TANK NEARLY FULL' indicates that the maintenance tank is almost full. Replace the maintenance tank with a new one.

Summary

PRECAUTIONS

DANGER

Signals a precaution that, if ignored, could result in serious or fatal personal injury.

WARNING

Signals a precaution that, if ignored, could result in damage to equipment.

About This Manual

Manual Configuration

Describes the manual's structure, listing six chapters and an appendix.

Symbols Used in this Manual

Explains symbols used to provide additional information or warn of danger.

Chapter 1 Product Description

1.1 Product Description

Provides a general overview and specifications of the product, including features.

1.2 Basic Specifications

Details technical specifications like print method, resolution, paper handling, and speed.

1.3 External View and Parts Names

Illustrates the printer's exterior and identifies key parts and connectors.

1.4 Control Panel

Explains the printer's control panel, including buttons, display, and LEDs.

1.5 Controller

Lists the printer's main controller components: CPU, RAM, and interfaces.

1.6 Interface

Describes the available interface options: USB, IEEE1394, and optional interfaces.

1.7 Optional Units and Consumables

Details available optional units and consumables like ink cartridges and maintenance tanks.

Chapter 2 Operating Principles

2.1 Overview

Introduces the chapter's content on print mechanism and operating principles.

2.2 Print Mechanism Components

Explains the major electrical parts of the printer's print mechanism.

2.3 Outline of Power Supply Circuit Board

Describes the operation of the C594 MAIN Board and its components.

2.4 Outline of Power Supply Circuit Board

Details the power supply circuit board and its control signals.

2.5 Colorimetric Calibration (Color ID) Overview

Explains the purpose and principle of colorimetric calibration for color accuracy.

Chapter 3 Troubleshooting

3.1 Overview

Provides basic procedures for efficient printer troubleshooting.

3.2 Troubleshooting based on Panel Messages

Explains error messages displayed on the LCD panel and their remedies.

3.3 Troubleshooting based on Printed Result

Addresses print quality issues like dot missing and bands, offering solutions.

3.2.4 Remedies for Service Call Errors

Provides remedies for service call errors that require professional intervention.

Chapter 4 Disassembly & Assembly

4.1 Overview

Introduces disassembly procedures and general precautions.

4.2 Disassembly Procedure

Details the step-by-step procedures for disassembling printer components.

Chapter 5 Adjustment

5.1 Overview

Introduces the adjustment program and procedures after repair or part replacement.

5.2 Mechanical Adjustment

Covers mechanical adjustments like sensor calibration and belt tension.

5.3 Basic Adjustment

Explains fundamental adjustments like RTC/ID settings and serial number input.

5.4 Advanced Adjustment

Details advanced adjustments like Auto Bi-D and destination settings.

5.5 Check Results

Describes how to check print quality results like nozzle status and alignment.

5.6 Reset Counters

Explains how to reset various counters related to component life.

5.7 Installing Firmware

Guides on how to update the printer's firmware.

5.8 Model Setting (when replacing the Main Board)

Details the procedure for setting the printer model after Main Board replacement.

Chapter 6 Maintenance

6.1 Overview

Provides information on how to maintain the printer for optimum operating condition.

6.1.1 Product Life Information

Details periodic maintenance items and product life estimates for components.

6.1.2 Required Maintenance Items

Lists essential items to check during printer servicing.

6.2 Lubrication

Explains the lubrication points and procedures for printer maintenance.

Chapter 7 Appendix

7.1 Connectors

Lists and describes the connectors on the main and sub boards.

7.2 Circuit Diagrams

Provides circuit diagrams for various printer boards.

7.3 Exploded Diagrams

Includes exploded diagrams of printer parts for assembly/disassembly reference.

Epson STYLUS PRO 9400 Specifications

General

Country of origin	Japan
Sound pressure level (printing)	50 dB
Color	Yes
Maximum resolution	1440 x 720 DPI
Number of print cartridges	4
Maximum print size	A0 (841 x 1189 mm)
Compatible operating systems	Mac OS X, OS 9 Microsoft Windows 2000 / XP
Power consumption (standby)	6 W
Power consumption (typical)	50 W
USB connector	USB Type-A
USB 2.0 ports quantity	1
Pallet width	1200 mm
Pallet height	1000 mm
Quantity per pack	1 pc(s)
Pallet length (UK)	1890 mm
Quantity per pallet	2 pc(s)
Package depth	1880 mm
Package width	820 mm
Package height	870 mm
Package weight	125000 g