LED Display

The normal power status or communication status and the error information such as paper out are indicated by the Power LED , Bluetooth LED , and Network LED .

Each LED independently indicates status or error information.

Power LED
Lights up or blinks blue, red, or magenta according to the power status, warning, or error information of the printer.
Bluetooth LED
Lights up blue according to the Bluetooth connection status.
Network LED
Lights up or blinks green according to the network connection status.
The Power LED(a), Bluetooth LED(b), and Network LED(c) are arranged from the left of the operation panel located at the front top of the printer.

For normal use

The printer power status is indicated by the Power LED .

Power off
The Power LED is turned off.

Power off status.

Turn On/Off Power
Power on
The Power LED lights up blue.

Power on status.

Warning Display

This function displays a warning that does not affect printer operations.
The status is online.

This is indicated by the Power LED .

Near end<MCP31LB, MCP31L, MCP31CB, MCP31C>
The Power LED alternately and continuously lights up blue for 3.75 seconds and red for 0.25 seconds.

This shows that the paper will be used up soon.

Paper Setup
Device that can only be charged via USB is connected
The Power LED blinks blue and red alternately for 0.5 seconds each. After continuing this operation for 5 seconds, the LED will enter the status display.

A device that can only be charged via USB (other than iOS devices, USB-connectable products (SCD222U, BCR-POP1 and DS9208) and USB hubs) is connected to the USB port (Type-A).
When tablets and such are connected for charging, the LED will blink for about 5 seconds and return to the status display.

USB hub connection
The Power LED blinks blue and red alternately for 0.25 seconds each. After continuing this operation for 5 seconds, the LED will enter the status display.

USB hub has been connected to the USB port (Type-A). (USB hub cannot be used)
Will blink for about 5 seconds after the USB hub has been connected, and return to the status display.

Error display (automatic recovery error)

Error indicates it will move automatically to normal usage because the error status has recovered.
The status is online.

This is indicated by the Power LED .

Stops printing due to detected high temperature for the head
The Power LED blinks blue (once, 2-second interval).

Since the printer head temperature is high, printing has stopped.
When the printer head temperature returns to a normal range, printing will resume automatically.

Stops printing due to detected high temperature for the substrate
The Power LED blinks blue (twice, 2-second interval).

Since the substrate temperature is high, printing has stopped.
When the substrate temperature returns to a normal range, printing will resume automatically.

Error display (error from which recovery is possible)

Error indicates that normal usage is possible if paper is replenished or when cover is closed or such steps are taken.
The status is offline.

This is indicated by the Power LED .

Cover open Error
The Power LED lights up red.

The printer cover is open.
Set the paper, close the printer cover, and it will move to the power-on status.

Paper Setup
Out of paper error
The Power LED blinks red (at 0.5-second interval).

The printer is out of paper.
Set the paper, close the printer cover, and it will move to the power-on status.

Paper Setup

Cutter error display

This is indicated by the Power LED .

Cutter error
The Power LED blinks magenta (at 0.125-second interval).

The cutter did not operate properly.
Open the printer cover if possible, remove the jammed paper, and then close the printer cover.
If the printer cover cannot be opened, turn the power off once, and on again; a cutter error will be resolved.
If the same error is displayed even after you take the action above, contact the seller.

Error display (error from which recovery is not possible)

Try turning the power off, and then on. If the same error is displayed even after the power is turned on again, contact the seller.

This is indicated by the Power LED .

Abnormal power supply voltage detection error
The Power LED blinks magenta (once, 2-second interval).

Supply of power is not consistent. Or, abnormality has been detected for the power unit.
Try turning the power off, and then on. Try changing the location for the electrical outlet and turn on the power again. If the same error is displayed even after the power is turned on again, contact the seller.

Connect AC Adapter
Printer head thermistor error
The Power LED blinks magenta (twice, 2-second interval).

An abnormality has been detected for the printer head thermistor (temperature sensor).
Try turning the power off, and then on. If the same error is displayed even after the power is turned on again, contact the seller.

Turn On/Off Power
Flash access error
The Power LED blinks magenta (4 times, 2-second interval).

An access error has been detected for the flash.
Try turning the power off, and then on. If the same error is displayed even after the power is turned on again, contact the seller.

Turn On/Off Power
EEPROM access error
The Power LED blinks magenta (5 times, 2-second interval).

An access error has been detected on the EEPROM.
Try turning the power off, and then on. If the same error is displayed even after the power is turned on again, contact the seller.

Turn On/Off Power
SRAM access error
The Power LED blinks magenta (6 times, 2-second interval).

An access error has been detected on the SRAM.
Try turning the power off, and then on. If the same error is displayed even after the power is turned on again, contact the seller.

Turn On/Off Power
Firmware rewrite error
The Power LED blinks magenta (7 times, 2-second interval).

A firmware rewriting error was detected.
Turn the power off, and on again. 
Check whether the MOT file specified for rewriting is compatible with the printer to rewrite data.

If the same error is displayed even after the power is turned on again, contact the seller.

Turn On/Off Power

Network link display

The Ethernet (LAN) connection status is indicated by the Network LED .

Ethernet connected.
The Network LED lights up green.

A connection between the printer and the destination network device such as a router or hub is established.

Ethernet link down (Physically disconnected)
The Network LED is turned off.

The printer and the destination network device such as a router or hub was disconnected.
Check and make sure that the LAN cable is correctly connected.

Connect LAN Cable
Ethernet link down (IP address cannot be obtained)
The Network LED blinks at 0.125 intervals.

The IP address cannot be obtained.
If a DHCP server is used, check the operations of the DHCP server.
If a DHCP server is not used, set an appropriate IP address.

Connect Tablet/PC (LAN)

Bluetooth connection display <MCP31LB, MCP31CB>

The Bluetooth connection status is indicated by the Bluetooth LED .

The timing for connecting the printer via Bluetooth varies depending on the operating system of the host device, so the display form is different.

Bluetooth connected
The Bluetooth LED lights up blue.

The printer is currently connected to the host device via Bluetooth.

iOS device
A connection with the iOS host device is completed.

Other than iOS device (Android, etc.)
This is only displayed when printing or status acquirement is performed via Bluetooth.

Bluetooth not connected
The Bluetooth LED is turned off.

The printer is not connected via Bluetooth.

iOS device
Not connected to any iOS host device.

Connect Tablet/PC (Bluetooth)