Acaution

; When you remove the connector cover, be careful not to break the tabs.

; When you remove the printhead cable holder, be careful not to break the printhead holder latch. Use a slotted screwdriver if necessary.

Step 1: Open the top cover and remove the ribbon cartridge.

Step 2: Remove the two CBS (M3x8) screws securing the FPC cover to the bottom plate of the printer mechanism.

Step 3: Disconnect the three printhead cables and a ground cable from the FPC board on the bottom plate. Note 1. When disconnect the cables, hold the cable close to the connector.

Note 2. When disconnect the cable, hold the connector to prevent it from being pulled off the board. Note 3. When disconnect the cable, pull it slowly and horizontally to the right, as viewed from the front side.

Figure 3-9. Ribbon Cartridge Removal

CBS(M3X8)

FPC Cover

Printhead Cables

CBS(M3X8)

FPC Cover

FPC Board

Figure 3-10. Head Cable Removal

FPC Board

Figure 3-9. Ribbon Cartridge Removal

Figure 3-10. Head Cable Removal

Step 4: Unlock the two head cable cover latches by pressing them with your fingers, then remove the cover by sliding it to the right. Remove the cable protection sheet, too.

Figure 3-11. Head Cable Cover Removal

Step 5: Disconnect the narrow FPC cable from white connector (lock-type).

Step 6: Move the carriage to around 90th column, remove the two CP(S-P1)(M4X7) screws securing the printhead and remove the CP(S-P1)(M3X6) screw securing the ground FPC, then remove the printhead.

Narrow FPC Cable CP(S-P1)(M3X6)

Printhead _

Narrow FPC Cable CP(S-P1)(M3X6)

Printhead _

Carriage

Figure 3-12. Printhead Removal

Carriage

Figure 3-12. Printhead Removal

Step 7: Disconnect the white connector for the paper width (PW) sensor on the ribbon mask. Step 8: Remove the two shafts securing the ribbon mask to the carriage using a hexagon head screw wrench, then remove the ribbon mask.

Shafts

Ribbon Mask

Ribbon Mask

Figure 3-13. Ribbon Mask Removal

PW Sensor Connector

Figure 3-13. Ribbon Mask Removal

Step 9: Install the new printhead, ribbon mask, and cable protection sheet by following Steps1 to 9 in the reverse order.

Step 10: Replace the ribbon mask with a new one. Set the cable of the paper width sensor as shown in

Figure 3-13. After installation, check that the ribbon mask is a little loose. Step 11: Install the new printhead (torque the screws to 12 + 1 kg cm). Replace the head cable protection sheet with a new one, then connect the head cables to the connector.

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