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Symptom Point to check (Cause) Solution
The printer is communicating via
wireless communication. (GH30/GH40
only)
Terminate the wireless communication.
Communication conditions are incorrect. Set the communication conditions correctly
Issue mode is incorrect. Select a correct issue mode.
The printer cannot
communicate via IrDA.
Transmission speed is incorrect. Send data at correct transmission speed.
The printer is not turned on. Turn on the printer.
Serial interface cable is connected.
(GH20 only)
Disconnect the RS-232C cable from the
printer.
The printer is communicating via
wireless communication. (GH30/GH40
only)
Terminate the wireless communication
The printer cannot
communicate via USB.
Issue mode is incorrect. Select a correct issue mode.
The printer is not turned on. Turn on the printer.
The interface cable is not connected
properly.
Completely connect the interface cable.
Issue mode is incorrect. Select a correct issue mode.
The printer cannot
communicate via serial
interface (GH20 only)
Communication conditions are improper.
Set the communication conditions
properly.
The printer is not turned on. Turn on the printer.
Distance to the host is too far.
Bring the printer close to the host within 3
m.
The printer is used in a location where it
is subjected to noise or interference.
Avoid such location.
The printer address is not correctly set
on the host.
Correctly set the print address on the host.
The printer cannot
communicate via Bluetooth.
(GH30 only)
Issue mode is incorrect. Select a correct issue mode.
The printer is not turned on. Turn on the printer.
Distance to the host is too far.
Bring the printer within a wireless
coverage area.
Obstacles block the radio wave.
Use the printer in a location with no
obstacles.
The printer is used in a location where it
is subjected to noise or interference.
Avoid such location.
The printer address is not correctly set
on the host.
Correctly set the print address on the host
Channel setting for the access point or
host is incorrect.
Avoid using a channel which interferes
with adjacent access points.
The printer cannot
communicate via wireless
LAN.
(GH40 only)
Issue mode is incorrect. Select a correct issue mode.
The print head is dirty. Clean the print head.
The media is not loaded properly. Load the media properly.
Deteriorated media is used. Load a new media roll.
Printout is too light.
The media is not a TOSHIBA TEC
approved one
Use TOSHIBA TEC approved media.
The STATUS lamp is lit or blinking. Clear the error
The printer received print
data but does not print.
The media is not loaded properly. Load the media properly.