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Section 6: Troubleshooting
M84Pro Service Manual PN 9001111A Page 6-2
TROUBLESHOOTING TABLE
Use the tables below to isolate problems based on their symptoms. Refer to their relative
procedures as applicable to correct the problem. The troubleshooting table below includes the
following general symptom descriptions:
Image Voids No Ribbon Movement Power LED Not Illuminated
Ribbon Wrinkle No Label Movement Error LED Illuminated
Light Print Images No Printed Image On Line Led not Illuminated
Smeared Print Images Display Problem No Label Drive
IMAGE VOIDS
Poor label quality. Use thermal transfer compatible stock.
Poor ribbon quality. Use genuine SATO ribbons.
Ribbon not matched to label stock. Consult with media supplier.
Damaged electronics. Replace circuit board.
Damaged platen. Replace platen.
RIBBON WRINKLING
Poor head alignment. Adjust head balance, ribbon roller, and head alignment.
Poor ribbon tension. Adjust tension as required.
Worn platen. Replace as necessary.
Foreign material on head or platen. Clean as required.
Foreign material no labels. Use high quality label stock.
Damaged print head. Replace print head as required.
LIGHT PRINT IMAGES
Poor label quality. Use thermal transfer compatible stock.
Poor quality ribbons. Use genuine SATO ribbons.
Low print head energy/darkness. Adjust darkness control. Refer to Operators Manual.
Low print head pressure. Adjust head balance.
Ribbon not matched to label stock. Use Premier II ribbon with a “1C” thermal transfer ribbon stock
or equivalent for optimum results.
Low ribbon and drive torque or no ribbon
movement.
Adjust ribbon drive clutch.
Foreign material on print head. Clean print head and platen roller.
Poor head alignment. Align print head as required.
Excessive print speed. Reduce print speed setting.