Specifications

Chapter 5: Disassembling and Reassembling the Printer 7193 Service Guide
August 199848
Removing the Printhead
Caution: Eectrostatic Discharge may damage the PC board. Wear a grounded wrist strap
and use a static mat or other ESD protected work surface whenever you work with the PC
board.
1. Unscrew the knife ground strap (on knife unit) from the printhead.
2. Remove the flat printhead spring by pushing or prying with a flathead screwdriver
under the plastic tab on one side.
Take care to preserve the plastic tabs.
Caution: Keep your hands away from the thermal printhead. Touching the printhead will
smudge it causing the print to degrade.
3. Remove the left support by unscrewing the two screws.
Note: You may find it easier to remove the knife motor before removing the printhead
assembly. See “Removing the Knife Motor” later in this chapter.
4. Remove the printhead assembly (printhead, heat sink, and cable) by sliding the flat
flex cable through the front slot of the mechanism.
Roll the cable over, without crimping it, to slide it through. Be careful not to tear the
cable.
5. Push out on the right back corner of the printhead to remove it.