Adjusting And Resetting The Printer - Epson LQ-2170 Service Manual

Adjustment

4.2 ADJUSTING AND RESETTING THE PRINTER

4.2.1 Platen Gap Adjustment
If you have rotated or reassembled the rear CR guide shaft or parallelism adjustment bushing, or if printing is
light or dark, even at the proper PG lever position, perform this adjustment at 3 positions: the 5th, 80th, and
130th columns.
1. Remove the printhead from the CR assembly (see Section 3.2.3).
2. Remove the ribbon mask from the ribbon mask holder using tweezers, as shown in the figure.
3. Attach the printhead to the CR assembly again, tightening the 2 CBS screws (3
4. Move the printhead to 5th column position.
5. Set the release lever to the FRICTION position.
6. Set the PG adjust lever to the second slot from rear of the printer mechanism as shown in the
following illustration.
7. Loosen the hexagon nut (standard, M4) securing the PG adjust lever while setting the PG adjust
lever to the second slot position from the rear of the printer mechanism.
P G S W
8. Insert the thickness gauge vertically between the printhead and platen.
4-2
Figure 4-1 Removing the Ribbon Mask
Figure 4-2 Setting the PG Adjust Lever
LQ-2170 Service Manual
Ribbon Mask
Ribbon Mask Holder
PG Adjust Lever
PG Adjust Slot
10, F/Zn).
Rev.A