How to Read the LED Status on a Star Micronics Printer
Introduction
This application note provides instructions for identifying printer errors and determining the appropriate solutions.
Before you begin
Star Micronics printers use Power and Error lights, known as Error Indicators, to display issues. These lights blink in different patterns to indicate specific errors. To troubleshoot, you’ll first need to identify the error being shown.
Follow these steps:
1. Select your printer model from the menu below. Some printers may have different model names but belong to the same series (for example, SP712 and SP742; in this case, select SP700).
2. Follow the troubleshooting instructions provided.
3. If the issue persists, please submit a ticket for further assistance.
Note: Please try the recommended troubleshooting steps before submitting a ticket.
Fix Error Light: If a printer is malfunctioning, the LED indicators on the operation or control panel will report the error condition. Each LED pattern corresponds to a specific issue.
For a cross-reference between LED indications and errors, please refer to your printer’s user manual, available for free download on the Star Global Support Site.
Thermal Printers
mC-Print3
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 printer power status is indicated by the Power LED 
.
Power off
Power off status.
Power on
Power on status.
This function displays a warning that does not affect printer operations.
The status is online.
This is indicated by the Power LED 
.
Near end
This shows that the paper will be used up soon.
Device that can only be charged via USB is connected
A device that can only be charged via USB (other than iOS devices and USB-connectable products*) is connected to the USB-A port.
*USB-connectable devices : SCD222U, BCP-POP1, DS9208 and USB HID (Keyboard) class Devices
USB hub connection
USB hub has been connected to the USB-A port. (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 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
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
Since the substrate temperature is high, printing has stopped.
When the substrate temperature returns to a normal range, printing will resume automatically.
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 printer cover is open.
Set the paper, close the printer cover, and it will move to the power-on status.
Out of paper error
The printer is out of paper.
Set the paper, close the printer cover, and it will move to the power-on status.
This is indicated by the Power LED 
.
Cutter error
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.
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
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.
Printer head thermistor error
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.
Flash access error
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.
EEPROM access error
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.
SRAM access error
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.
Firmware rewrite error
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.
Turn On/Off Power
Note: If you find an error other than the above, try turning the power off, and then on. If the same error is displayed even after the power is turned on again, it may be a printer malfunction. Contact the seller.
The Ethernet (LAN) connection status is indicated by the Network LED 
.
Ethernet connected
A connection between the printer and the destination network device such as a router or hub is established.
Ethernet link down (Physically disconnected)
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.
Ethernet link down (IP address cannot be obtained)
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.
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
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 printer is not connected via Bluetooth.
mC-Print2
The normal power status or communication status and the error information such as paper out are indicated by the Power LED 
, Network LED 
, and Bluetooth 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. Network LED 
Lights up or blinks green according to the network connection status. Bluetooth LED 
Lights up blue according to the Bluetooth connection status.
The printer power status is indicated by the Power LED 
.
Power off
Power off status.
Power on
Power on status.
This function displays a warning that does not affect printer operations.
The status is online.
This is indicated by the Power LED 
.
Device that can only be charged via USB is connected
A device that can only be charged via USB (other than iOS devices and USB-connectable products*) is connected to the USB-A port.
When tablets and such are connected for charging, the LED will blink for about 5 seconds and return to the status display.
*USB-connectable devices : SCD222U, BCP-POP1, DS9208 and USB HID (Keyboard) class Devices
USB hub connection
USB hub has been connected to the USB-A port. (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 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
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
Since the substrate temperature is high, printing has stopped.
When the substrate temperature returns to a normal range, printing will resume automatically.
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 printer cover is open.
Set the paper, close the printer cover, and it will move to the power-on status.
Out of paper error
The printer is out of paper.
Set the paper, close the printer cover, and it will move to the power-on status.
This is indicated by the Power LED 
.
Cutter error
The cutter did not operate properly.
If paper is jammed, remove the paper, reset the paper and confirm whether the error is resolved.
If the error is not resolved, try turning the power off and then on again.
If the same error is displayed even after the power is turned on again, contact the seller.
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
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.
Printer head thermistor error
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.
Flash access error
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.
EEPROM access error
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.
SRAM access error
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.
Firmware rewrite error
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.
Note: If you find an error other than the above, try turning the power off, and then on. If the same error is displayed even after the power is turned on again, it may be a printer malfunction. Contact the seller.
The Ethernet (LAN) connection status is indicated by the Network LED 
.
Ethernet connected
A connection between the printer and the destination network device such as a router or hub is established.
Ethernet link down (Physically disconnected)
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.
Ethernet link down (IP address cannot be obtained)
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.
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 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 printer is not connected via Bluetooth.
iOS device
Not connected to any iOS host device.
TSP100IV-UE
The normal power status and error information such as paper out are indicated by the Power LED 
, Error LED 
, and Network LED 
.
Power off
Power off status.
Power on
Power on status.
Device that can only be charged via USB is connected
A device which only supports USB charging (device other than Android devices, USB-connectable products <BCR-POP1, SCD222U> or USB hubs) is connected to the USB-A port.
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
A USB hub is connected to the USB-A port. (A USB hub cannot be used.)
The LED blinks for about 5 seconds after the USB hub was connected, and then returns to the status display.
Error indicates it will move automatically to normal usage because the error status has recovered.
The status is online.
Stops printing due to detected high temperature for the head
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
Since the substrate temperature is high, printing has stopped.
When the substrate temperature returns to a normal range, printing will resume automatically.
Error indicates that normal usage is possible if paper is replenished or when cover is closed or such steps are taken.
Status is offline
Cover open error
The printer cover is open.
Set the paper, close the printer cover, and it will move to the power-on status.
Out of paper error
The printer is out of paper.
Set the paper, close the printer cover, and it will move to the power-on status.
Cutter error
The cutter did not operate properly.
If a paper jam is happening, remove the paper that is causing the jam after turning off the power, and move the movable part to the home position by referring to Cutter Lock. If the same error is displayed even after the movable part is moved, contact the seller.
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.
Abnormal power supply voltage detection error
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.
Printer head thermistor error
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.
Flash ROM access error
An access error has been detected on 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.
EEPROM access error
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.
RAM access error
An access error has been detected on the RAM.
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.
FW rewrite error
During FW rewrite, an error was detected in the received FW data.
Or, a verify error was detected after FW rewrite.
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.
Note: If an error other than the above is displayed, try turning the power off and then on again. If the same error is displayed after turning the power back on, there may be a malfunction in the printer. Please contact the seller.
The Ethernet (LAN) connection status is indicated by the Power LED and Network LED .
Ethernet connected.
A connection between the printer and the destination network device such as a router or hub is established.
Ethernet link down (Physically disconnected)
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.
Ethernet link down (IP address cannot be obtained)
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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.
TSP100IV-UEWB
TSP100III
TSP100ECO
 | If performing the recommended troubleshooting does not resolve the LED Error, please SUBMIT A TICKET. | |
TSP650II
 | If performing the recommended troubleshooting does not resolve the LED Error, please SUBMIT A TICKET. | |
TSP700II & TSP800II
 | If performing the recommended troubleshooting does not resolve the LED Error, please SUBMIT A TICKET. | |
Impact Printers
SP700
 | If performing the recommended troubleshooting does not resolve the LED Error, please SUBMIT A TICKET. | |
Kiosk Printers
SK1
The Power LED indicates power status, communication status, and errors such as paper out. Color (green or red) and behavior (steady or flashing) identify the specific condition.
If performing the recommended troubleshooting does not resolve the LED Error, please SUBMIT A TICKET.
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