Epson SQ-B50/2550 Technical Manual page 172

REV.-A
4.2.1 Printhead Replacement
This section describes the printhead removal and assembly procedures.
NOTE: The printhead unit includes a filter. Since the length of the ink supply tube cover varies
depending of the number of printable columns, the cord to the printhead unit and the assembly
procedures are different between the 80-and 136-column models.
Step 1 Drain the ink. (See Table 4-2.)
Step 2 Remove the upper case. (See Section 4.2.2.1.)
Step 3 Move the paper bail up. Move the printhead to a position near the 20th column by moving the
carriage manually while pressing the head cap set.
Head Cap set
Paper bail
- Pirnthead
- - - - FPC Cover
Figure 4-4. Moving the Printhead
Step 4 Remove the CC screw (3 X 12) at the rear of the printer, which secures the FPC cover, then
remove the FPC cover.
Step 5 Disconnect the FPC from the connector.
Step 6 Remove the two screws securing the printhead to the carriage.
Right side: CP(P) (M3 X 6)
Left side: CP(P) (M3 X 12)
CP(P) (M3 x 12)
12)
Figure 4-5. FPC Removal
4-10