Published: Mid-2021 (Retrospective Analysis)
Product Focus: Epson EcoTank Pro L15150 (ET-16500 in some regions)
The Epson L15150 is a powerhouse in the small office/home office (SOHO) market. As part of Epson’s EcoTank Pro line, this wide-format all-in-one printer delivers high-volume printing, scanning, copying, and faxing with incredibly low running costs thanks to its ink tank system.
However, like all modern Epson printers, the L15150 is governed by a Service Required counter. After a certain number of prints, or when the waste ink pad reaches its capacity, the printer locks down. It flashes an error message: “Service Required. Parts inside your printer are at the end of their service life.”
For many users, the default solution is to ship the printer to an authorized service center. But for technicians, savvy office managers, and DIY enthusiasts, the Epson L15150 Resetter Adjustment Program 2021 became the golden key to reviving these machines without costly part replacements.
This article is a deep dive into what the 2021 adjustment program is, how it works, where to find it, and how to use it safely.
Before using the 2021 adjustment program, you must confirm the printer has reached its service limit. Look for these signs:
Do not proceed if the printer is error-free. Resetting a healthy printer is unnecessary.
Disclaimer: This guide is for informational and educational purposes. Modifying service counters may void your warranty. Proceed at your own risk.
The official process typically involves:
It is
The Epson L15150 requires a physical replacement or a hardware chip resetter for its maintenance box, as software programs generally do not reset the main waste ink counter.
Unlike older Epson models where software completely overrides the waste ink pads, the Epson L15150 uses a smart chip on the C9345 maintenance box. However, official or third-party adjustment programs are still highly utilized for diagnostics, printhead alignments, and resetting secondary internal platen pad counters.
Below is a detailed guide on how the reset process works, what the software does, and how to resolve the waste ink error safely. 🛠️ The Real Fix: Maintenance Box C9345
Because the Epson L15150 relies on a physical chip for its main waste ink tank, computer software cannot trick it. You have two options when it becomes full:
Replace the Maintenance Box: Buy a brand-new Epson C9345 Maintenance Box. It is a user-replaceable part that slots directly into the printer and comes with a fresh chip.
Use a Hardware Chip Resetter: Purchase an external physical hardware device known as a "C9345 Chip Resetter." You must press this tool against the gold contacts of the box's chip to restore it to 0%. (Note: You must also clean or swap the absorbent physical sponge inside to prevent ink overflow). 💻 What the Epson L15150 Adjustment Program Does
Third-party vendors and service technicians use the Epson L15150 Adjustment Program (often known as the service utility) for secondary maintenance tasks. Core Functions
Platen Counter Reset: Over time, ink overspray collects on the platen. This program can clear that specific counter.
Print Head ID Input: Crucial if you ever have to physically replace the printer's firing head.
Initial Ink Charge: Forces a heavy ink flush through the tubes after extended storage or heavy clogs. Detailed Diagnostics: Pulls EEPROM settings and error logs.
⚠️ How to Safely Use the Adjustment Program (If Required)
If you are performing secondary adjustments or clearing the internal platen pad, follow these critical steps:
Disable Antivirus Protection: Windows Defender and third-party antivirus software flag adjustment programs as false positives because of how they modify printer memory. Temporarily disable real-time protection.
Connect via USB: You cannot use an adjustment program over Wi-Fi or a network cable. Plug the printer directly into your PC via a USB cable.
Extract the Files: Right-click the downloaded compressed folder and select "Extract All".
Run as Administrator: Right-click the .exe file (usually named AdjProg.exe) and select "Run as administrator." Check vs. Initialize: Click on Particular Adjustment Mode. Select Waste Ink Pad Counter (or Platen Pad Counter). Click the Check button first to pull the current reading. Check the boxes you wish to reset and click Initialize.
Reboot: Turn the printer completely off and back on to finalize the reset.
If you tell me what specific error message your printer is displaying on its screen, I can guide you to the exact method needed to clear it. How to Reset Epson L15150 Printer
To reset the Epson L15150 waste ink counter using the Adjustment Program (Resetter), follow these steps to clear the "Service Required" error. Important Prerequisites
Hardware Check: The Epson L15150 uses a user-replaceable Maintenance Box (C9345). Using software to reset the counter without physically replacing or cleaning the maintenance box can cause ink to overflow and damage your printer.
Connection: Ensure the printer is connected to your PC via a USB cable; resets typically cannot be performed over Wi-Fi. Step-by-Step Reset Guide Open the Utility: Run the AdjProg.exe file for the L15150.
Select Model: Click the Select button. Choose L15150 from the Model Name list and select the correct USB Port where your printer is connected. Click OK.
Enter Maintenance Mode: Click on Particular Adjustment Mode.
Find the Counter: Under the Maintenance section, select Waste Ink Pad Counter and click OK. Verify Status:
Check the box for Main Pad Counter (and any others shown, like the Platen Pad Counter). Click Check to see the current usage percentage. Initialize the Reset: Check the boxes again.
Click the Initialize button. A pop-up will ask for confirmation; click OK. Finalize:
Once the program says "Please turn off the printer," turn off your Epson L15150 using the power button. Click OK on the software prompt, then Finish.
Turn your printer back on. The error message should now be cleared. Troubleshooting Tips
Communication Error: If the program fails to communicate, try a different USB port or replace the USB cable.
Factory Reset Alternative: If you only need to reset general settings (not the waste ink counter), you can use the printer's LCD screen: go to Settings > Restore Default Settings > Clear All Data and Settings.
Maintenance Box: If the error persists, you may need to physically replace the maintenance box with a new one.
Guide to the Epson L15150 Resetter & Adjustment Program (2021) The Epson L15150 Go to product viewer dialog for this item.
is a high-performance EcoTank printer designed for A3+ tasks. However, like many Epson models, it may eventually trigger a "Service Required" error, indicating that the waste ink pad counter has reached its limit. Using the Epson L15150 Resetter (Adjustment Program)
allows you to reset these internal counters to zero, extending the life of your printer without an immediate hardware replacement. What is the Epson L15150 Adjustment Program?
This utility is a specialized software tool used by service technicians to perform maintenance and internal calibrations. The 2021 version specifically supports the L15150 model to resolve the following issues:
Waste Ink Pad Reset: Clears the "Service Required" error by resetting the counter.
Print Head Cleaning: Performs deep cleaning cycles for blurry or poor-quality prints.
EEPROM Operations: Reads or writes internal printer data for advanced diagnostics. Step-by-Step: How to Use the Resetter
To successfully reset your printer, follow these steps precisely:
Prepare the Connection: Ensure your printer is connected to your computer via a USB cable. Software resets often fail over Wi-Fi.
Disable Antivirus: Temporarily turn off Windows Real-time Protection and any third-party antivirus software, as they often flag these utilities as false positives.
Run the Program: Open the AdjProg.exe file. If prompted for a password, check the included text files in your download folder. Select Model & Port : Click the Select button and choose
as the model. Leave the port on Auto Selection or manually select the specific USB port.
Enter Adjustment Mode: Click on Particular Adjustment Mode and select Waste Ink Pad Counter from the list. Check and Initialize:
Check the boxes for Main Pad Counter and Platen Pad Counter (if applicable). Click Check to see the current usage percentage. Click Initialize to reset the counters to 0%.
Finalize: A pop-up will ask you to turn off the printer. Power it down, wait 10 seconds, and turn it back on. The error should now be gone. How to Reset Epson L15150 Printer
By late 2022, Epson released firmware version CV19I1 which completely blocked the 2021 resetter’s communication protocol. Today, the only tools that work on L15150 with firmware >CV19 are:
If your L15150 has auto-updated to the latest firmware, the 2021 software will not work.