Service manual

Unit 3: Troubleshooting
SATO D508/D512 Service Manual Page 3-3
TROUBLESHOOTING TABLE
IMAGE VOIDS
Damaged print head Replace print head
Damaged electronics Replace circuit board
Damaged or worn platen roller Replace platen roller
Vertical line in printed image Dirty or defective print head
LIGHT PRINT IMAGES
Low print head energy/darkness Adjust darkness control
Low print head pressure Ensure top cover is securely closed.
Foreign material on print head Clean print head and platen roller
Excessive print speed Reduce print speed setting
UNEVEN PRINT DARKNESS
Worn platen roller Replace platen roller as required
Dirty print head Clean as necessary
SMEARED PRINT IMAGES
Poor label quality Use high quality label stock
Foreign material on print head and platen
roller
Clean print head and platen roller
Foreign material on labels Use high quality label stock
Excessive print head energy Adjust darkness control
Excessive print speed Adjust speed as required. Remove excessive head pressure.
NO LABEL MOVEMENT
Incorrect label pitch sensor selected Select the correct label sensor type
No voltage output Replace fuse on main circuit board. Test power supply and
replace as required
Drive motor not operating Ensure wiring harness connection. Replace as necessary
Defective main board Troubleshoot board and replace as necessary
NO PRINTED IMAGE
Print head is disconnected Ensure print head wiring harness is connected on each end
No voltage output Test power supply and replace as necessary
Damaged print head Replace print head
Damaged electronics Replace circuit board
Interface problems Check. Refer to relative instructions below