Problem |
| Probable Cause |
| Corrective Action |
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Machine advances stock | 1) Print head cable unconnected or | 1) | Power off the machine and reinsert the | |
but does not print. | faulty. | offending connector or replace cable. | ||
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| 2) | Print head faulty. | 2) | Replace print head. |
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| 3) | Head Driver Board unplugged or | 3) | Check Head Driver Board / AT board |
| faulty. | connection and or replace Head Driver Board. | ||
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Print registration is off in | 1) Print position is incorrect. | 1) | Enter the setup menu and readjust the print | |
the feed direction. |
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| setting as needed. | |
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| 2) | Field(s) position incorrect in the | 2) | Using formatter - check and readjust the field(s) |
| format. | position(s) as needed. | ||
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| 3) | Bound platen roller. | 3) | Check that the platen roller turns freely on it's |
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| shaft. If it does not replace it. | |
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Print registration is off in | 1) Machine incorrectly threaded. | 1) | Check and rethread the media as needed. Refer | |
the web direction. |
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| to "Loading Stock". | |
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| 2) | Web guides incorrectly adjusted. | 2) | Check and adjust as needed. Refer to "Web |
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| Guide Adjustment". | |
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| 3) | Unwind incorrectly adjusted. | 3) | Check and adjust as needed. Refer to "Web |
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| Guide Adjustment". | |
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| 4) | Incorrect DIP switch settings on | 4) | Check and reset DIP switches as needed. Refer |
| the Thermal Control Board. | to "TCB Dip Switch S2 Settings". | ||
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Print contrast is too light or | 1) Incorrect strobe setting selected | 1) | Using Formatter - check and adjust the strobe | |
dark. | in the format. | setting according to the media and ink being | ||
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| used. | |
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| 2) | Incorrect strobe setting in the | 2) | Enter the setup menu and readjust the strobe as |
| machine setup. | needed. | ||
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Voids in print image in the | 1) Ink misaligned with format. | 1) | Adjust ink position on the arbors to achieve full | |
feed direction. |
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| ink coverage over all fields on the format. | |
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| 2) | Print head dirty. | 2) | Power off the machine clean the print head and |
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| platen. Refer to "Print Head Cleaning". | |
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| 3) | Faulty print head. | 3) | After cleaning head and running the test pattern |
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| to confirm that a void still exists. Replace the | |
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| print head. | |
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| 4) | Worn platen roller. | 6) | Replace platen roller. |
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Machine continually stops | 1) Ink Sensor uncalibrated. | 1) | Recalibrate the sensor from the front panel using | |
with an erroneous |
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| the “Calibrate Sensors” mode. Refer to "Optical | |
interlock condition. |
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| Sensor Electrical Calibration". | |
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| 2) | Ink Sensor position misadjusted. | 2) | Relocate correctly. |
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| 3) | Ink sensor type (light / dark) | 3) | Either change the ink or the ink type in the |
| incorrect in the format for the ink | format. | ||
| type being used. |
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User Manual Model 676 LOKPRINT® | Electrical Trouble Shooting • 43 |