Epson LQ-590 Adjustment Program

Epson LQ-590 Adjustment Program: A Comprehensive Guide

In the realm of dot matrix printers, the Epson LQ-590 has carved out a solid reputation for its durability, reliability, and performance in environments that require high-volume and multipart form printing. Like any printer, however, the LQ-590 isn't immune to operational hiccups, especially after long periods of use. This is where the Epson LQ-590 Adjustment Program becomes a critical tool for users and technicians alike. Whether you're a business owner, a printer repair technician, or a tech-savvy enthusiast, understanding this utility can save you both time and money.

What is the Epson LQ-590 Adjustment Program?

The Epson LQ-590 Adjustment Program is a proprietary software tool developed specifically for the Epson LQ-590 series of dot matrix printers. Its primary function is to perform maintenance and reset operations that go beyond the capabilities of the standard printer driver and utility tools. Often used by authorized service personnel, this program can access the printer’s internal parameters to make adjustments, reset certain counters, and resolve errors that would otherwise require professional servicing.

Key Features of the Adjustment Program

Here are some of the most critical functions the adjustment program offers:

1. Waste Ink Pad Counter Reset

Dot matrix printers don’t have ink pads like inkjets, but they still track usage with internal counters. The program can reset these counters after maintenance, preventing false error messages that indicate the printer has reached the end of its service life.

2. EEPROM Initialization

The EEPROM (Electrically Erasable Programmable Read-Only Memory) stores settings and usage data. The adjustment program can reset or reconfigure this memory to restore the printer to factory defaults or update its configuration for specific tasks.

3. Bi-Directional Adjustment

Print head alignment is essential for clear and legible printing. The adjustment tool allows you to fine-tune the bi-directional printing for optimal print quality, especially important in forms and documents that demand precision.

4. Top Margin and Head Adjustment

Users can manually adjust the print head's top margin and vertical alignment to match the specific type of paper being used, whether it’s a single sheet or multi-part form.

5. Sensor Checks and Diagnostics

The software can run diagnostics on key hardware components like the paper sensors, platen gap sensor, and head temperature monitor. This helps in identifying faulty components without dismantling the printer.

6. Firmware Update Tool

Though not always included, some versions of the program support firmware updates, allowing the user to install newer versions of the printer's onboard software.

Why Is the Adjustment Program Needed?

While most users never need to interact with an adjustment program, its importance becomes clear in specific scenarios:

• End-of-Life Error Resets: After a certain number of prints, the printer may display a "Service Required" message. This doesn’t always mean something is broken; the printer is simply warning you that maintenance may be due. The adjustment program lets you clear this message.
• Print Quality Issues: Misaligned print heads, incorrect top margins, and poor bi-directional alignment can degrade the output. Manual adjustments using the tool can restore proper functioning.
• Cost-Effective Maintenance: Rather than sending the printer to a repair center, minor resets and diagnostics can be performed in-house, saving time and money.

Risks and Responsibilities

It’s worth noting that the Epson LQ-590 Adjustment Program is not publicly distributed by Epson in most cases. Instead, it's typically available to certified service providers. That said, versions of the tool can be found online from third-party sources. However, using unofficial software comes with risks:

1. Software Legitimacy

Not all versions available online are genuine. Some may contain malware, spyware, or may be altered to function improperly, causing more harm than good.

2. Warranty Voiding

Using unauthorized software tools can void your warranty, especially if the printer is still under coverage. Epson may deny service claims if tampering is detected.

3. Incorrect Settings

A wrong adjustment can affect print quality or damage hardware components. For example, an incorrectly set platen gap could result in a misfire or poor impact on multi-part forms.

4. Legal Implications

Since the adjustment program is considered intellectual property, distributing or using it without a license could be seen as a breach of Epson’s software agreement.

How to Use the Epson LQ-590 Adjustment Program

Disclaimer: Proceed only if you're familiar with printer maintenance or have guidance from a professional.

Here’s a basic rundown on how the tool is used:

Step 1: Preparation

• Make sure your printer is connected via USB or parallel port.
• Disable antivirus temporarily (as some versions may be flagged).
• Extract the software to a local folder.

Step 2: Launching the Program

• Run the executable file (often named “AdjProg.exe” or similar).
• Select your printer model (LQ-590) and port.

Step 3: Backup Current Settings

• If available, export current EEPROM settings as a backup.
• Print a test page before any changes.

Step 4: Perform Desired Adjustments

• Choose the operation: reset counter, adjust head alignment, or sensor check.
• Follow on-screen instructions carefully.
• For print alignment, you may be prompted to insert specific test sheets.

Step 5: Save and Exit

• Once changes are made, save settings and power cycle the printer.
• Re-enable your antivirus and disconnect the printer if no longer needed.

Common Problems Solved by the Adjustment Tool

- “Service Required” or “Maintenance Required” Messages

These can usually be cleared with a counter reset or EEPROM reinitialization.

- Misaligned Text or Graphics

Bi-directional and vertical alignment functions can fix this issue.

- Inconsistent Paper Feeding

Sensor checks and platen gap adjustments often resolve feeding inconsistencies.

- Faded or Incomplete Printing

While this can be a ribbon issue, head adjustments can ensure consistent pressure and contact on forms.

Best Practices

To get the most out of your Epson LQ-590 and its adjustment program:

• Use only when necessary: Frequent unnecessary adjustments can degrade the printer’s precision.
• Document your changes: Always keep a record of what adjustments were made and when.
• Test after changes: Always run a print test or nozzle check after performing an operation.
• Avoid cracked versions: They may be unstable or unsafe.
• Consider professional help: When in doubt, consult with an Epson-certified technician.

Alternatives to the Adjustment Program

If you're uncomfortable using the program or cannot find a legitimate version, here are some alternatives:

1. Official Epson Utilities: Basic tools for driver updates, test prints, and firmware upgrades.

2. Manual Maintenance: Cleaning the print head, replacing the ribbon, or adjusting the platen gap manually.

3. Professional Servicing: Epson-certified technicians can perform deep maintenance, including part replacements.

Conclusion

The Epson LQ-590 Adjustment Program is a powerful utility for maintaining, repairing, and extending the life of one of Epson’s most popular dot matrix printers. While its use should be approached with care, it offers a level of control and flexibility that can be a game-changer for businesses that rely on consistent and high-volume printing. When used responsibly, it helps keep your equipment running smoothly without the overhead of frequent service center visits.

That said, always weigh the benefits against the potential risks, and when possible, opt for official tools and authorized technicians to ensure the long-term health of your printer. The Epson LQ-590 may be a workhorse, but even workhorses deserve a careful touch.