If the Power LED does not turn on even when the power is turned on, it may mean that the power cable is not properly connected. Please check. It also may mean that the electrical outlet is loose. Check and make sure that the power outlet is properly connected.

The USB cable connection method depends on the operating system of the device (PC/smartphone/tablet) you are using. Check and make sure that the cable is properly set.

• It also may mean that the connector is loose. Confirm that both the USB (Lightning) cable for the printer and device to be connected (PC/smartphone/tablet) are securely connected.
• If you unplug the USB (Lightning) cable immediately after connecting it, iOS device may not recognize the printer even if you reconnect it. In this case, turn off the printer and turn it on again.
• Since the USB (Lightning) cable does not have a structure that secures the connector, make sure to secure the cable using the cable hook after connecting the cable.
• The USB (Lightning) cable may also be disconnected. If the connection is not established even after reconnecting, try connecting with a different cable.

If the USB cable is connected and the Windows driver is not installed, the operating system may not properly recognize the printer.

If a USB cable was connected before installing the Windows driver and the printer queue could not be created, remove the USB cable, install the Windows driver and then reconnect the USB cable.

You cannot transfer data with multiple devices at the same time.

If a Windows (or other) device and iOS device are connected to USB-A port and USB-B port at the same time, data transferring is only possible for the device which was connected first.
In addition, if the printer is turned on when a Windows (or other) device and iOS device are connected to USB-A port and USB-B port at the same time, data transfers will be prioritized for the Windows (or other) device using USB-B port and the iOS device will only be charged (maximum of 0.5A).

If there unneeded cables connected, please remove them.

The USB-A port provides communication and charging to iOS devices (iPhone, iPad, etc.) and USB-compatible devices (SCD222U); it provides charging only (max 0.5A) to other USB devices.
The USB-B port is used for transferring data between Windows/Android/Mac/Linux devices and connections from other USB devices are not supported.

Please check that the Power LED is turned on.
If the Power LED does not turn on even when the power is turned on, it may mean that the power cable is not properly connected. Please check. It also may mean that the electrical outlet is loose. Check and make sure that the power outlet is properly connected.

If a white sheet is being ejected, then it may be possible that the paper roll is set in the opposite direction. Check the direction of the paper roll to make sure that the paper is set correctly.

As this product is a thermal printer, it will not print on ordinary paper. Also, if there are issues such as the printed words being faint, it may be that the paper does not meet the specifications, or the paper has become old and deteriorated. Check the appropriate paper roll specifications and use paper that meets the printer's specification.

If the Power LED is blinking or the Error LED is lit/blinking, refer to the LED display and check the status of the product.

If you can hear the printer operating but the paper is not being ejected, there is a possibility that a paper jam has occurred or the paper is being rolled onto the rubber roller. If a paper jam has occurred, refer to the "Paper Jam" section and remove the paper in question.

Check that self-printing is working properly.
If self-printing is working properly, check if the app, software, and printer connection settings are properly configured.
If a Windows device is used, check if the correct printer queue is specified as the output.

Do not touch the paper or block the outlet while the paper is being discharged.

It may be that the paper thickness and such do not meet the required specifications. Check the appropriate paper roll specifications and use paper that meets the printer's specification.

If the printer cover does not close, confirm that the diameter of the paper roll is 83mm or smaller. Check the appropriate paper roll specifications and use paper that meets the printer's specification.

If the printer cover does not open even when you press the open lever, it is likely that a paper jam has occurred and the cutter is locked. Refer to "Cutter Lock" to release the lock.

Only the TSP100IIU supports the top margin of 3mm.
The minimum top margin of TSP100IIIU is 11 mm.

Confirm that the Power LED of the main unit is turned on.
Charging USB peripherals such as a tablet can only be done while the power of the main unit is turned on.

Confirm that the USB (Lightning) cable for the tablet is connected to the USB-A port of the main unit.

If the connection is made to the USB-B port , charging is not possible. For Windows/Android/Mac/Linux devices, data transferring and charging is not possible at the same time.

To charge the device, use USB-A port .

Also, while connected to the USB-B port , the maximum charging current provided from USB-A port is 0.5A even for iOS devices. This means that for devices such as iPads which require a minimum charging current of 0.5A, the device will not display as being charged.

The maximum power supplied by USB-A port is 2.4A when a iOS device is connected, and 0.5A for other devices. When charging devices other than iOS devices, check the required power capacity for charging the USB device.

Also, while connected to the USB-B port , the maximum charging current provided from USB-A port is 0.5A even for iOS devices. This means that for devices such as iPads which require a minimum charging current of 0.5A, the device will not display as being charged.

Use TSP100III Utility to easily check TSP100III settings. You can also check settings using the self-printing function.

This machine provides the de-curl function to correct curls generated in thermal paper roll. The de-curl mechanism is always running during paper feeding.

• However, this function cannot remove curls completely.
• A receipt may be slightly folded near the top depending on the time in which receipt paper is left during the period from when a receipt is printed until the next one.
• The de-curl effect varies depending on the paper you use or your environment.
• Depending on the type or remaining amount of thermal paper roll, a receipt may be warped in a direction opposite to the normal direction by the de-curl function.