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Unit 5: Troubleshooting
CT4i Series Operator Manual 5-5
NO PRINTED IMAGE
Print head is disconnected. Ensure print head wiring harness is connected on each end.
No voltage output Replace fuse. Test power supply and replace as required
Defective print head Replace print head and reset counter
Damaged electronics Replace circuit board
Interface problems Troubleshoot interface - refer to the next chapter
Data input error Ensure correct data stream
PRINTER CREATES A BLANK LABEL
Data input error Ensure correct data stream
Incorrect label sensor selection Ensure correct printer configuration
Disconnected print head Power off the printer and ensure a proper connection
Defective print head Replace print head as required
Defective main circuit board Replace main board as required
INCORRECT LABEL POSITIONING
Incorrect label sensor selection Ensure correct printer configuration
Improper sensor adjustment Adjust sensor sensitivity as required
Data input error Ensure correct data stream
Incorrect offset settings Adjust settings as required
SMEARED PRINT IMAGES
Poor media quality Use higher quality media
Foreign material on print head and platen roller Clean print head and rollers
Foreign material on labels Use higher quality media
Excessive print head energy Adjust darkness setting
Excessive print speed Adjust print speed as required