Hasselblad H3D 31MPix User Manual page 131

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2
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A
B
C
Care and maintenance of sensor unit
Handling and storage
• Always replace the protective CCD/filter cover when the sensor unit is not mounted
on your camera.
• Do not touch the exposed CCD/filter with your fingers.
• Keep all foreign objects out of the camera opening.
• Store your sensor unit away from moisture and excessive heat. Please see "Technical
Specifications" for complete operational and storage requirements.
• Protect your sensor unit from impact—do not drop it.
Cleaning the CCD Infrared Filter
If you see dark or coloured spots or lines in your images, then you may need to clean
the outer surface of sensor unit's infrared (IR) filter. In most cases, the careful use of
compressed air will be adequate though if you use canned compressed air, read the
intructions very carefully before use to avoid spraying impurities or even ice on the
filter! Sometimes, however, small particles will get stuck to the surface of the IR filter,
requiring for a more thorough cleaning, involving either fluid or wipes. For a good safe
cleaning, follow descriptions below.
Basic air-cleaning procedure / removing the sensor unit
1. Remove the FireWire if connected.
2. Remove the viewfinder (see 'Attaching and removing the viewfinder' if unsure).
3. While pushing the safety catch backwards on the sensor unit (3 illus. A) push the
lever of the sensor unit release button to the right (3 illus. B) and while maintaining
that position press the centre of the button firmly inwards towards the camera body
(3 illus. C) to finally release the magazine.
4. Clean the outside surface of IR filter by spraying it with clean compressed air (see
warning above first). If this is not enough, then use one of the procedures outlined
below.
5. Reattach the sensor unit to the camera immediately after cleaning to check results.
6. If you still see spots on your shot after you have cleaned the outside of the infrared
filter, then you may have dust on either on the back side of the IR filter or on the CCD
itself.

WARNING:
Never attempt to remove the glass filter from the front of the CCD—you will probably
ruin the CCD if you do so. If dust manages to get between the IR filter and CCD, it can
only be removed at the Hasselblad factory. Contact your Hasselblad dealer for assist-
ance.
Cleaning using the HAMA cleaning fluid and tissues
Note! Hasselblad recommends HAMA Optic Cleaning Fluid 5902.
1. Carefully spray the fluid onto the IR filter at a distance of 10-15 cm (4-5 inches), so
that the fluid is applied onto the filter as a thin, even haze. 1-2 sprays are enough. If
you apply too little, the fluid will start to dry up before you start wiping the filter. As
an alternative you can spray the fluid onto the tissue first, and then apply it to the
filter as you wipe it.
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