3. Open the window when prompted by the front panel.
4. Look at the ESP Sensor as directed by the front panel, and press OK if it is emitting light
downwards onto the platen (as it should be); press Cancel if you see no light.
5. Close the window when prompted by the front panel.
The Carriage moves to the left bump of the printer in order to close the ESP shutter, then moves
back to the same location to the right of the scan axis.
6. Open the window again when prompted by the front panel, and check again for light from the
ESP Sensor.
This time, you should see no light, because the shutter should be closed. Any light indicates a
problem with the shutter mechanism: either something is broken in the shutter itself, or the shutting
mechanism does not work.
7. If you saw the light the first time and not the second time, the shutter is working correctly, and the
test ends.
ENWW
Service utilities
115
Service tests and
utilities
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