5. TROUBLESHOOTING
5. TROUBLESHOOTING
Possible cause | Check point | Solution |
The feed gap sensor has | Usually, a sensor calibration is automatically | Refer to the System Mode Manual, |
not been adjusted. | performed. However, for some media, it | Section 2.5, and adjust the sensor. |
| may be necessary to register a print area | If “SENSOR ERROR” still appears after |
| level voltage and a no paper level voltage in | an adjustment, there can be the |
| the system mode. The difference between | following failures: |
| two voltages must be 1V or more. | (1) Upper and lower sensor positions |
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| (2) Foreign object is caught in the |
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| sensor. |
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| (3) Connectors are not inserted |
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| completely. |
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| (4) Sensor PCB is faulty. |
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| (5) Sensor harness or MAIN PC board |
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| is faulty. |
The sensor harness is | Check if the sensor harnesses are properly | Connect the harness completely. |
not connected properly. | connected. |
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The media sensor is not | • If the sensor harnesses are not | If the problem still occurs even after |
installed correctly. | completely connected, or sensor | clearing the faulty part, the sensor PCB |
| harnesses are faulty, the sensor cannot | may be faulty. |
| function properly. |
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| • The sensor position is moved along the |
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| slit with |
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| stopper of the sensor is damaged, an |
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| alignment cannot be performed properly. |
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| • Check if the |
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| sensor PCB is aligned with a hole in the |
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| upper sensor cover. |
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3. A feed jam (paper jam) error occurs when the black mark sensor is used. | ||
Possible cause | Check point | Solution |
Media type is not suitable | A sensor error may occur depending on the | Change the command or media type |
for the selected sensor. | combination of the selected sensor and the | properly. |
| media type to be used. | Or, the media may need to be modified |
| (e.g.) Black mark sensor + Media without | so that a print start position detection |
| black marks | can be performed correctly. |
The black mark sensor | The black mark sensor position needs to be | Adjust the black mark sensor position to |
position is not proper. | adjusted so that the sensor can detect black | the center of a black mark. |
| marks. Without position adjustment, a |
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| sensor error or no paper error occurs |
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| improperly. |
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A foreign object is | If paper or ribbon particles, or other foreign | Remove the foreign objects. |
attached to the sensor. | objects are attached to the sensor, the |
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| sensor cannot function properly. |
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