Unit 5: Troubleshooting
TROUBLESHOOTING TABLE
IMAGE VOIDS
Damaged print head. | Replace print head. |
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Damaged electronics. | Replace circuit board. |
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Damaged or worn platen roller. | Replace platen roller. |
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Vertical line in printed image. | Dirty or defective print head. |
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LIGHT PRINT IMAGES |
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Low print head energy/darkness. | Adjust darkness control. |
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Low print head pressure. | Adjust head balance. |
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Foreign material on print head. | Clean print head and platen roller. |
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Poor head alignment. | Align print head as required. |
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Excessive print speed. | Reduce print speed setting. |
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UNEVEN PRINT DARKNESS |
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Unbalanced print head. | Ensure correct balance. |
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Worn platen roller. | Replace platen roller as required. |
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Dirty print head. | Clean as necessary. |
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SMEARED PRINT IMAGES |
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Poor label quality. | Use high quality label stock. |
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Foreign material on print head and platen | Clean print head and platen roller. |
roller. |
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Foreign material on labels. | Use high quality label stock. |
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Excessive print head energy. | Adjust darkness control. |
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Excessive print speed. | Adjust as speed as required. |
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Excessive head pressure. | Adjust head balance. |
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NO LABEL MOVEMENT |
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Loose timing belt. | Ensure motor mount screws are tight, belt properly tensioned. |
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Incorrect label pitch sensor selected. | Select the correct label sensor type. |
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No voltage output. | Replace fuse on main circuit board. Test power supply and |
| replace as required. |
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Drive motor not operating. | Ensure wiring harness connection. Replace as necessary. |
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Defective main board. | Troubleshoot board and replacee as nwecessary. |
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NO PRINTED IMAGE |
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Print head is disconnected. | Ensure print head wiring harness is connected on each end. |
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SATO GT4xxe Series Operator Manual | PN 9001138A | Page |
