Articles on: Hardware

Getting Started SP742

Star Micronics SP742

The following article will show you how to start setting up your printer once you have received it and unboxed it. Will go over on how to connect your printer via USB and LAN.

Model: SP742 LAN/USB


Table of Contents:

Connect LAN Cable
Connect via USB
Connect Power Cable
Turn Power ON
Turn power OFF
Paper Setup
Self Printing
Category Routing Level
Product Level Routing
Troubleshooting Guide


Power Cable
Ribbon Cartridge
Paper Roll guide
Paper Roll

Connect LAN Cable

Connect one side of the LAN cable to your router/Hub

Connect the other side of the LAN cable to the LAN connector of the printer.

Connect via USB

Alternatively, you have the option to connect your printer using a USB cable. To do so follow the steps below to get started.

Make sure the printer is Unplugged, To avoid printer damage.

With a screwdriver, remove the two top screws holding the interface card in place.

Remove the interface card unit by gently pulling the direction of the arrow above

Once you have removed the interface, gently slide the new interface in until it is firmly seated.

Secure the new interface card using the two screws that were extracted in step 2.

Lastly, run a self-print test. The interface should show USB as shown below.

Connect Power Cable

Connect the power cable

Note the direction of the power socket, and connect the power cable

Wire power cable

There are 4 cable outlets to the right, back, and left. It can be wired according to where the device is placed.

Insert the power cable plug into an electrical outlet.

Turn Power ON

Press the power switch on the side of the main unit.

When the power is turned on and it can be used normally, the ready LED turns on blue.

Turn the power OFF

Press the power switch on the side of the main unit

The ready LED (Blue) turns off when the power is turned off.

Confirm that the LED lamp has turned off before turning on the power again.

Paper Setup

Set the paper with the printer ON to automatically feed or cue paper

Push the opening lever (1) to open the printer cover (2)

Set the paper roll in the direction as shown in the illustration.

Pull the end of the paper straight.

Push both sides as shown in the diagram and close the printer cover.

Self Printing

Follow the steps below to learn how to detect your IP Address.

Step 1: Turn the printer OFF

Step 2: While pressing the FEED button (1), turn the power ON (2).

Step 3: Release the FEED button after 5 seconds. The printer will produce two sheets of information. Keep the second sheet, as it will display the detected IP address within a bordered box. This sheet also contains subnet and gateway information. This information may be useful for troubleshooting purposes if the printer isn't detectable.

Now that you have set your printers, learn how to select your designated printers, name your printers, and detect and test your printers at the point of sale by clicking on the link (

Note: To ensure successful detection, all devices should be on the same network IP. The initial three sets of numbers in the IP address should match, followed by a distinct set of numbers.

Category Routing Level

The following guide will show you how to route categories, once you have named your printers on the Point of Sale. You can route categories directly from the POS or the dashboard.

From paired printers navigate to Menu Management on the left-hand side of the navbar

Select Categories

Select a category name, and next assign the printer. The products within the category will all print from the assigned printer.

Product Level Routing

Learn how to route your products at a product level, by following the steps below.

Tap (a) or slide the dropdown arrow down (b) to open settings page.

Tap on Menu Management

Tap on Product

Select a product and assign a printer to the product. The printer you assign to your product will eventually print at the station where the printer is located.

learn how to troubleshoot your printer, in incase you come around an issue.

Troubleshooting Guide

Reset printer back to the factory default configuration

This section will show you how to factory reset your printer, please follow the steps above to reset your printer:

Turn the printer ON to confirm you have a solid green light for POWER.

Look behind your printer where your Ethernet cable plugs into the network interface card. Next to the cable, there will be an “SW” red button

With a small screwdriver or pin, press the “SW” button until you see both the NIC LED lights start blinking, Immediately release the “SW” button. Both NIC LED lights should remain solid

Press on the “SW” button one more time until both NIC LED lights are turned OFF, then release the button.

Lastly confirm with a self-test page that the printer was able to rest the NIC card successfully. Power OFF your printer, Locate the FEED button in front of your printer, hold down the FEED button while you power ON, this should start to print two pages, depending on the printer it will make a clicking sound.

Receipt not printing

If your printer happens to not print after orders have been fired, please follow the steps below to help fix the issue.

Note: the printer is only compatible with thermal receipt paper.

Ensure you have the correct paper roll.

If thermal receipt paper is inserted, please try to flip the paper over, make sure the tongue is coming from on top and not from the bottom.

Make sure the lid of the printer is closed properly.

Open the lid of the printer and make sure there is no jammed paper.

If the issue is still persistent, after following the steps above. Please reach out to eatOS Support.

Printer light Error

Green and solid Red lightRear cover is open. To fix issue please close it correctly
Flashing GREEN Light and solid RED LightFront cover is open. To fix issue please close it correctly
Solid Green light + Flashing RED lightPaper is out, Replace paper roll
Flashing RED & GREEN light every 2 secondsEthernet may have disconnected to fix issue please make sure an Ethernet cable is connected correctly. May require to try another cable and another Ethernet port on the router or switch.
Both GREEN and RED light flashing erraticallyIP Address has been lost. Fix this issue by making sure the Ethernet cable is properly connected and not lose. Power on/off your network device, may require to assign a static IP address to the printer.

Updated on: 11/06/2023

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