Service manual

Page 6-45
Section 6. Replacement Procedures
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
6.18 Replacing the Print Head
STEP PROCEDURE
1. Switch the printer OFF and disconnect the power cable.
2. Raise the lid.
3. Engage the head lock lever and remove the center stud holding the head bracket
to the print head. Fig. 6-79
4. Remove (2) screws and detach ribbon adjust plate.
5. Disengage the head lock lever and drop down the head. Fig. 6-80
6. Carefully disconnect the print head data cable and the print head power cable
and remove the print head. Fig. 6-80
7. Install the new print head by reconnecting the print head cable and the print
head power cable.
8. Engage the head lock lever and position the print head so that the alignment
pins seat into the head recesses. Fig. 6-80
9. Insert the center stud through the bracket and into the head. Tighten the stud
securely.
10. Replace the ribbon adjust plate.
11. Close the printer and replace the locking screw. Close the lid.
12. Reconnect the power cable.
The print head can be easily replaced. No critical adjustments are required. Before
replacing the print head, check the head counter values by printing a test pattern.
Before returning the printer to normal service, you should perform the following steps:
 Head Counter Clear
 Confirm that the head cables are connected and do not touch the head. Also confirm
that you can open and close the head without restriction and that the ribbon guide plate
adjustment is correct.
 Print a test pattern.
Caution: Do not remove or loosen the two screws on either side of the
center screw. Fig. 6-81
Caution: Head is very fragile and can be easily scratched so handle
carefully.