TEC SX4T - B B/W Direct Thermal User Manual page 292

10. MAJOR UNIT REPLACEMENT
6) Replace the print head ass'y with a new one, then reassemble in the reverse order of removal.
NOTE: Fit the positioning pins of the head bracket into the positioning holes of the print head
ass'y, which doesn't require the position adjustment.
Positioning Pin
Positioning Hole
7) Make sure that the print head harness doesn't appear out of the printer block. If so, the print head
harness may touch the ribbon and the media causing a print failure.
8) Perform a test print. Make sure that printing was performed correctly.
If the print tone is improper, refer to Section 5.5.5 to adjust the print tone.
9) Refer to Section 5.8.3 to perform a maintenance counter clear.
Print Head Harness
Printer Block
10-19
EO18-33012A
10.7 PRINT HEAD
Head Bracket
Print Head Ass'y
Positioning Pin
Positioning Hole