Preventive and Corrective Maintenance
Printhead Upgrade Option
13291L-001 Rev. A S4M Maintenance Manual 10/27/05
5. Secure the printhead fork assembly to the printhead housing using the previously removed
6. See Figure 39 on page 131. Rotate the two printhead pressure dials back to their original
Clean the printhead and the platen roller.
Remove the Main Logic Board
Connect yourself to an antistatic device.
2. Refer to RRP No. 1 on page 122 and remove the electronics cover.
3. See Figure 42. Remove all cables from the main logic board (MLB).
Figure 42 • Remove the Main Logic Board Connections
Caution • Do not use sharp objects to clean printhead or platen roller.
Caution • Observe proper electrostatic safety precautions when handling
static-sensitive components such as circuit boards and printheads.
Note • Take note of the location of all connectors on the main logic board.
1Printhead data (J3) 7Transmissive sensor (P9)
2Power-in (J8) 8Reflective sensor (P7)
3Front panel (J2) 9Take-label sensor (J19)
4Stepper motor (J9) 10 Communication expansion port (J17)
5Booster board (J7) 11 USB port (J14)
6Ribbon sensor (P4) 12 Serial port (J10)