Epson Stylus COLOR 3000 Service Manual - Page 110

Platen Gap Adjustment, Adjustment, Rev.

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Adjustment 4.1.1 Platen Gap Adjustment This adjustment is performed to obtain the appropriate gap between the head nozzle surface and the platen. It must be adjusted after reinstalling or replacing the CR guide shaft, CR unit or parallelism adjust bushing. The specified value range for the platen gap is 1.26 ± 0.02 mm. 1. Set the right and left parallelism adjust bushings to the middle of the adjusting range. 2. Place the thickness gauges at the illustrated positions in Figure 4-1. Figure 4-1. Thickness Gauge Placement 3. (See the flowchart in Page 4-3.) Turn the left parallelism adjust bushing to make the gap as follows: Wide enough to insert a 1.24 mm-thick gauge Too narrow to insert a 1.28 mm-thick gauge (Table 4-2 shows the direction for moving the parallelism adjust bushing to make the platen gap from wide to narrow or vice versa.) Table 4-2. Direction for turning the Parallelism Adjust Bushing Platen gap To narrow To widen Left parallelism adjust bushing Clockwise Counterclockwise Right parallelism adjust bushing Counterclockwise Clockwise 4. Apply the same procedure for the right parallelism adjust bushing. CAUTION Be sure to place the thickness gauge under the both black and color printheads. Before moving the CR unit, set the PG adjust lever to "+" to open the platen gap. 4-2 Rev. A

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Adjustment
Rev. A
4-2
4.1.1 Platen Gap Adjustment
This adjustment is performed to obtain the appropriate gap between the head nozzle surface and the
platen. It must be adjusted after reinstalling or replacing the CR guide shaft, CR unit or parallelism adjust
bushing.
The specified value range for the platen gap is 1.26
±
0.02 mm.
1. Set the right and left parallelism adjust bushings to the middle of the adjusting range.
2. Place the thickness gauges at the illustrated positions in Figure 4-1.
3. (See the flowchart in Page 4-3.)
Turn the left parallelism adjust bushing to make the gap as follows:
Wide enough to insert a 1.24 mm-thick gauge
Too narrow to insert a 1.28 mm-thick gauge
(Table 4-2 shows the direction for moving the parallelism adjust bushing to make the platen gap from
wide to narrow or vice versa.)
Platen gap
Left parallelism adjust
bushing
Right parallelism adjust
bushing
To narrow
Clockwise
Counterclockwise
To widen
Counterclockwise
Clockwise
4. Apply the same procedure for the right parallelism adjust bushing.
Be sure to place the thickness gauge under the both black and color printheads.
Before moving the CR unit, set the PG adjust lever to “+” to open the platen gap.
Thickness Gauge
Figure 4-1. Thickness Gauge Placement
Table 4-2. Direction for turning the Parallelism Adjust Bushing
CAUTION