HP Designjet 4500mfp HP Designjet 45XX mfp/45XX HD Scanner series - Quick Refe - Page 54

Lamp unit, Air filters, White-background platen, Glass plate

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Lamp unit Over time, the intensity of the lamp weakens. When the intensity weakens beyond a certain point, a message appears on the touch screen advising you to replace the lamp unit. It is important to replace the lamp unit when the message appears. Failure to do so will result in poor image quality. For step-by-step instructions on replacing the lamp unit, press and consult the scanner online help. NOTE: Before replacing the lamp unit, you should thoroughly clean the glass plate and the entire scanning area and see if that clears the advisory message. For more information on cleaning the glass plate and scanning area, see Clean the glass plate and the scanning area on page 47. NOTE: The lamp unit and the air filter are included in the same package and should be replaced at the same time. Air filters The air filters protect the scanner from dust and other airborne particles. Over time, they become saturated. Timely replacement of air filters reduces the need for cleaning and calibration, and helps to maintains image quality. NOTE: The lamp unit and the air filter are included in the same package and should be replaced at the same time. For step-by-step instructions on replacing the air filters, press and consult the scanner online help. White-background platen The white-background platen can become worn, discolored, warped, or otherwise damaged after long periods of use. For step-by-step instructions on replacing the white-background platen, press and consult the scanner online help. NOTE: Before replacing the white-background platen, you should thoroughly clean it. Glass plate Over time, the condition of the glass plate can deteriorate. Even very small scratches can reduce image quality. For step-by-step instructions on replacing the glass plate, press and consult the scanner online help. Maintenance 50 Chapter 3 Maintenance

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Lamp unit
Over time, the intensity of the lamp weakens. When the intensity weakens beyond
a certain point, a message appears on the touch screen advising you to replace the
lamp unit. It is important to replace the lamp unit when the message appears.
Failure to do so will result in poor image quality.
For step-by-step instructions on replacing the lamp unit, press
and
consult the scanner online help.
NOTE:
Before replacing the lamp unit, you should thoroughly clean the glass plate
and the entire scanning area and see if that clears the advisory message. For more
information on cleaning the glass plate and scanning area, see
Clean the glass
plate and the scanning area
on page
47
.
NOTE:
The lamp unit and the air filter are included in the same package and
should be replaced at the same time.
Air filters
The air filters protect the scanner from dust and other airborne particles. Over time,
they become saturated. Timely replacement of air filters reduces the need for
cleaning and calibration, and helps to maintains image quality.
NOTE:
The lamp unit and the air filter are included in the same package and
should be replaced at the same time.
For step-by-step instructions on replacing the air filters, press
and
consult the scanner online help.
White-background platen
The white-background platen can become worn, discolored, warped, or otherwise
damaged after long periods of use.
For step-by-step instructions on replacing the white-background platen, press
and consult the scanner online help.
NOTE:
Before replacing the white-background platen, you should thoroughly
clean it.
Glass plate
Over time, the condition of the glass plate can deteriorate. Even very small
scratches can reduce image quality.
For step-by-step instructions on replacing the glass plate, press
and
consult the scanner online help.
50
Chapter 3
Maintenance
Maintenance