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The baud rate cannot be set using the 
Change Baud Rate Wizard or the 
Brother printer utilities.
• Error 99: The computer cannot detect the printer.
- Make sure that the printer is turned on.
- Make sure that the interface cable is connected correctly.
- Make sure that the COM port where the printer is connected 
is the same COM port selected in the Change Baud Rate 
Wizard. (Many computers have more than one COM port 
and COM2 may have been mistakenly selected in the 
Change Baud Rate Wizard.)
• Error 1 or Error 5: The serial port of the computer cannot 
be used. 
When another serial connection device is using the same 
COM port, labels cannot be printed. Change the COM 
port for the serial connection device or connect the printer 
to a COM port that is not being used.
I want to reset the printer/delete the 
data transferred from computer.
To reset the printer, press and hold the power button to turn 
off the printer. Then, hold down the power button for two 
seconds. Continue holding down the power button, and press 
the Feed/Cut button six times. The printer will then reset. All 
the transferred data from the computer will be deleted and all 
printer settings will be reset to the factory settings.
I want to cancel the current printing job.
Make sure that the printer is on, and then briefly press the 
power button on the front of the printer.
Data cannot be sent from a device 
plugged into the USB Direct Interface 
on the front of the printer, or 
a connected device cannot be used 
(PT-9800PCN only).
• The connected device is incompatible with the 
PT-9800PCN. 
If the LED display on USB Direct Interface is flashing in 
red, either the device is incompatible with the printer or 
the device consumes too much power. In either case, 
the device cannot be used with the PT-9800PCN.
• The buffer of the PT-9800PCN is full. 
If the LED flashes in red while connected devices are 
being used, the buffer of the PT-9800PCN may have 
become full. Stop the data transmission, wait until the 
data buffered in the PT-9800PCN has been processed, 
and then unplug the device and plug it in again.
• An error occurred during installation.
• Installation cannot be performed 
with the CD-ROM.
Visit http://solutions.brother.com/
• I would like more information about 
the Add-Ins.
• I do not understand how to connect 
to a database.
See the “Software User’s Guide” (PDF).
Problem Solution