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Neither is any liability assumed for damages resulting from the use of the information contained herein. Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation’s...
Shut down your equipment immediately if it produces smoke, a strange odor, or unusual noise. Continued use may lead to fire. Immediately unplug the equipment and contact your dealer or a Seiko Epson service center for advice. Never attempt to repair this product yourself. Improper repair work can be dangerous.
The thermal head can be very hot during printing and immediately after printing. Touching it may cause burns. Unpacking Check whether the following items are included. If any items are damaged, contact your dealer. ❏ Printer ❏ Power switch cover ❏ User’s Manual (this manual) TM-L90 User’s Manual 5...
PAPER OUT LED Lights when roll paper is out. FEED button Connect the printer to a power source while pressing this button starts a self-test. (See “Running a Self-test” on page 18.) 6 TM-L90 User’s Manual...
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Power switch cover WARNING: If an accident occurs with the power switch cover attached, unplug the power cord immediately. Continued use may cause fire or shock. CAUTION: Do not remove the power switch soft cover. TM-L90 User’s Manual 7...
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Loosen the screw with a coin or similar tool, and turn it at least 3 or 4 times. While pushing the lever into the holes, turn the tab until the lever is set in the position shown in the illustration below. 8 TM-L90 User’s Manual...
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Tighten the screw and make sure the lever moves smoothly. Screw Lever TM-L90 User’s Manual 9...
Note: Do not remove the buzzer cable from the connector. The printer does not operate with the buzzer cable disconnected. Power supply connector Ethernet connector USB connector Buzzer cable Buzzer unit Connector for the buzzer cable 10 TM-L90 User’s Manual...
Max. Min. Buzzer unit Knob Install the roll paper. (See “Installing or Replacing the Roll Paper” on page 14.) Attach the cover on the rear side of the printer. TM-L90 User’s Manual 11...
Removing and Installing the Buzzer Unit Removing and installing the buzzer unit as shown the illustration. Note: Do not remove the buzzer cable from the connector. The printer does not operate with the buzzer cable disconnected. <Removing> 12 TM-L90 User’s Manual...
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The printer prints the interface settings. Initialization of the Interface Setting Turn off the printer. Keep the buzzer cable connected and remove the buzzer unit. Press and hold the reset button; then power on the printer. The interface settings are initialized. TM-L90 User’s Manual 13...
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Open the roll paper cover using the cover open lever. Remove the used roll paper core if there is one. Turn on the printer. 14 TM-L90 User’s Manual...
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Be sure to close the roll paper cover completely by pushing on the middle of the cover. When the printer cannot detect the black mark on the roll paper correctly, the printer goes into an error status. In such case, reinstall the roll paper correctly. TM-L90 User’s Manual 15...
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Make sure the used roll paper is cut at the right position. Open the roll paper cover using the cover open lever. Remove the used roll paper core if there is one. Insert a roll of paper in the correct direction. 16 TM-L90 User’s Manual...
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CAUTION: Never clean the product with alcohol, benzine, thinner, or other such solvents. Doing so may damage or break the parts made of plastic and rubber. TM-L90 User’s Manual 17...
Power off the printer, open the roll paper cover, and clean the thermal elements of the thermal head with a cotton swab moistened with an alcohol solvent (ethanol or IPA). Epson recommends cleaning the thermal head periodically (generally every 3 months) to maintain receipt print quality. Thermal head...
Follow the steps below when the roll paper cover will not open. Power off the printer. Insert a tool such as a screwdriver into the slots on both sides of the printer, and lift the cover in the direction of the arrow to remove it. Slot TM-L90 User’s Manual 19...
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25.4 mm (dots per inch) *1: Be sure to use a safety-standards-applied power source that meets the following specifications. Rated output: 24 V/2.0 - 10.0 A or more, Maximum output: 240 VA or less 20 TM-L90 User’s Manual...