MO9740 Manual
12. Troubleshooting
If the printer is in an abnormal condition, the power LED will keep blinking. The printer is working but communication between the host and printer will stop.
To understand the problem, please check both
LEDs first:
A. Power and Ready LEDs blink at the same tempo
Power LED Ready LED
ON | ON |
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OFF | OFF |
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Possible |
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Problems |
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. Check the label path | If you are using | |||
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| . Check the label sensor | continuous label roll | |
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| and run under |
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| Windows, you should |
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| select the continuous |
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| media. |
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Label stock out | . Supply the label roll out |
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Label stock not | . Install the label roll |
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installed |
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Label jam |
| . Recover the jam |
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MO9740 Manual
B. Power and Ready LEDs blink alternately
Power LED |
| Ready LED |
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ON |
| OFF |
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OFF |
| ON |
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Possible Problems |
| Solutions | Remarks | ||
Ribbon out |
| Supply the ribbon roll | Not applicable to | ||
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| direct thermal type. | ||
Ribbon jam |
| Recover the jam | |||
Ribbon sensor error | Replace the ribbon sensor |
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C. Only the Power LED blinks
Power LED |
| Ready LED |
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ON |
| ON |
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OFF |
| ON |
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Possible | Solutions | Remarks | ||
Problems |
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Serial IO error | . Check the baud rate | Not for Centronics | ||
Memory full | Add the extension RAM |
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Cutter failed, or | . Check the cutter | It occurred, only when | ||
jam at cutter | . Recover the jam | cutter is installed, or the | ||
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| setting of the cutter |
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Hardware error | Call for service |
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