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Unit 5: Troubleshooting
Lt408 Operator Manual
5-6 PN: 9001152A
TROUBLESHOOTING TABLE
TROUBLESHOOTING TABLE
IMAGE VOIDS
Dirty print head. Clean print head.
Damaged print head. Replace print head.
Damaged electronics. Replace circuit board.
Damaged or worn roller. Replace rollers.
Poor label quality. Use higher quality media.
Ribbon stock and media are mismatched. Consult with media supplier.
RIBBON WRINKLING
Poor head alignment. Adjust head balance and alignment.
Excessive temperature setting Adjust temperature.
Poor ribbon tension. Adjust tension as required.
Worn roller. Replace as necessary.
Foreign material on print head and/or rollers. Clean as required.
Foreign material on labels. Use higher quality media.
Damaged print head. Replace print head as required.
LIGHT PRINT IMAGES
Low print head energy/darkness. Adjust darkness level.
Low print head pressure. Adjust head pressure and/or balance.
Foreign material on print head. Clean print head and rollers.
Improper head alignment. Align print head as required.
Excessive print speed. Reduce print speed setting.
UNEVEN PRINT DARKNESS
Unbalanced print head. Adjust head balance.
Worn rollers. Replace rollers as required.
Dirty print head. Clean print head.
MEANDERING MEDIA
Incorrectly loaded media. Ensure correct loading.
Improperly adjusted media guides. Adjust as required.
Unbalanced print head. Adjust as required.
Worn rollers. Replace as required.
NO LABEL MOVEMENT
Loose or broken timing belt. Replace or adjust as required.
Incorrect label sensor selected. Check printer configuration for proper sensor selection.
No voltage output. Replace fuse. Test power supply and replace as required.
Drive motor not operating. Ensure wiring harness connection. Replace as necessary.
LCD FIELD ILLUMINATED BUT WITHOUT WORDS OR NO DISPLAY AT ALL
Power supply issues. Ensure cable properly connected. Check/replace power supply.
Incorrectly positioned display potentiometer. Adjust as required.