Zebra A300 User's Guide download pdf (Page 30)

Table 5. Troubleshooting

Power light does not

turn on when Power

switch is turned on.

Printer is not

receiving power.

Make sure that the power supply is plugged into

the printer and into a wall outlet, power strip, or

other source of power.

When printer is first

powered on, the Power

light flashes every 3

seconds.

Printer failed an

internal diagnostic

test.

Turn printer off and then back on. If the symptom

persists, call a service technician.

Power light is flashing.

For more information,

see Table 3 on page 16.

Out of media or

media incorrectly

loaded.

Load media correctly. Make sure that the media

is placed on the inside edge of the platen roller

and that it feeds straight through the printhead:

otherwise, it may not be detected by the media

sensor.

Printhead is over-

heated.

Allow printer to cool. Printing resumes automati-

cally when the printhead cools to operating tem-

perature.

Long tracks of missing

print (blank vertical

lines) on several labels.

Printhead is dirty. Clean the printhead. See Table 4 on page 20.

Print element is

damaged.

Call a service technician to replace the printhead.

Poor print quality. Printhead is dirty. Clean the printhead. See Table 4 on page 20.

Ribbon tension is

not set correctly.

Refer to page 7. Change the ribbon tension knob

to the other setting. Generally, set it clockwise

for narrow ribbon and counter-clockwise for

wide ribbon.

Misregistration (print-

ing does not start at the

top of the label) and

misprint of 1 to 3

labels.

Printer needs to be

calibrated.

Recalibrate the printer. See “Calibration” on

page 18.

Ribbon tension is

not set correctly.

Refer to page 7. Change the ribbon tension knob

to the other setting. Generally, set it clockwise

for narrow ribbon and counter-clockwise for

wide ribbon.

A label format was sent

to the printer but not

recognized.

Communications

parameters are

incorrect.

For serial communication, make sure that the

baud rates of the printer and the computer match.

Also, make sure that the correct com ports on the

PC are selected.

Problem with the

data cable.

Make sure the data cable is installed correctly if

serially connected. For serial operation, make

sure you are using a “null modem” cable.

Printer appears to oper-

ate, but nothing prints.

Ribbon is wound

the wrong way.

Use Zebra-brand ribbon that is wound with the

ink/wax on the inside surface.

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