Mechanical Adjustment; Ink Mark Sensor Height Adjustment - Epson Stylus Pro 7400 Service Manual

EPSON Stylus Pro 7400/7800/9400/9800

5.2 Mechanical Adjustment

5.2.1 Ink Mark Sensor Height Adjustment

This adjustment is intended to adjust the gap between the Ink Mark Sensor and the
platen.
Required Tool
Ink Mark Sensor Position Jig (for the adjustment and verification)
Procedure
1. Set the adjustment jig on the platen at home side by putting the four legs of the
jig into the paper suction holes as shown in
Carriage Unit slowly until the Ink Mark Sensor comes on the jig.
2. Loosen the screw that secures the Ink Mark Sensor to the Carriage Unit as
shown in Figure 5-5, and adjust the position of the sensor so that it contacts
with the jig. Then tighten the screw.
3. Set the jig for verification to the position shown in
Carriage Unit slowly until the Ink Mark Sensor comes on the jig. Then check
that the sensor slightly contacts with the elevated portion of the jig.
Jig for Adjustment
Paper Suction Holes
Figure 5-4. Jig Setting Positions
Adjustment
Figure 5-4. Then move the
Figure 5-4, and move the
Jig for Verification
Paper Suction Holes
Mechanical Adjustment
Adjust the sensor position
while loosening this screw.
Jig for Adjustment
Figure 5-5. Ink Mark Sensor Height Adjustment (1)
Adjust the sensor position so that it slightly
contacts with this elevated portion.
Jig for Verification
Figure 5-6. Ink Mark Sensor Height Adjustment (2)
Revision B
301