Platen Gap Adjustment; Figure 4-5. Pg Lever Operation; Figure 4-6. Confirmation Method - Epson Stylus 820 Service Manual

Stylus Color IIs / Stylus 820

4.1.4 Platen Gap Adjustment

This adjustment is required when the carriage unit is removed from the main unit or replaced. Adjust the
distance between the printhead nose and the paper surface to 1.18 mm.
1. Remove the upper case, and place a thickness gauge (commercially available) on the paper guide plate at
the adjustment position on the left side of the printer , as shown in the figure below:
2. Move the carriage unit manually onto the thickness gauge.
1.18 mm
Table 4-1. Gap and Adjustment Direction
Gap between Head Nose
and Gauge Surface
Too narrow
Too wide
3. Rotate the parallelism adjustment bushing, attached to the left and right ends of the carriage guide shaft
until the black or color printhead contacts the thickness gauge.
4. After placing the printheads against the gauge surface, verify the gap between the carriage flag and the
front frame. (See Figure 4-6.)
Front Frame
Rev. A

Figure 4-5. PG Lever Operation

Clockwise (CW)
Counterclockwise (CCW)
Carriage Flag

Figure 4-6. Confirmation Method

1.18 mm
Move
Left Bushing
Thickness Gauge
Adjustments
Move
Right Bushing
Counterclockwise (CCW)
Clockwise (CW)
Head
4-7