Platen Gap (Pg) Adjust Mechanism; Cr Lock Mechanism - Epson Stylus COLOR 800 Service Manual

EPSON Stylus &2/25 800

2.2.5 Platen Gap (PG) Adjust Mechanism

The PG adjust mechanism, located at the left of the printer mechanism, consists of the PG lever, PF sub
lever, right/left parallelism adjust bushings, and CR guide shaft. PG adjust mechanism is equipped to keep
the proper platen gap according to the paper thickness to prevent ink from having friction. The PG lever
joins to the CR guide shaft which has an eccentricity via PG sub lever, and switching the lever from "0" to
"+" rotates the CR shaft and the platen gap changes from narrow to wide. Figure 2-6 show the PG adjust
mechanism.

2.2.6 CR Lock Mechanism

The CR lock lever, locate at the right side of the printer mechanism, is composed of the PF motor, PF
roller assembly, Stopper lever (CR lock lever) and so on. When there is no paper loaded and no data
stored, CR lock mechanism fixes the CR unit to the capping position. This operation is accomplished by
rotating the PF motor clockwise with the specified steps to set the stopper lever at the right end of the PF
roller to the left of the CR unit. The stopper lever is then release from the set position when the PF motor
rotates counterclockwise with the specified steps. The drive from the PF motor is transmitted in the
following order;
1) PF motor pinion gear
4) PF roller assembly
The figure below shows the CR lock mechanism.
2-6
Figure 2-6. PG Adjust Mechanism
2) Combination gear 14, 31.5
5) Stopper lever
Figure 2-7. CR Lock Mechanism
3) Gear 70
Rev. A