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Unit 5: Troubleshooting
CT4i Series Operator Manual 5-4
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. Use only SATO-certified media
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
LED FIELD ILLUMINATED BUT NO DISPLAY AT ALL
Power supply issues Ensure cable properly connected. Check/replace power supply
Incorrectly positioned display potentiometer. Adjust as required