Hasselblad H4D 40 - Care, Digital Capture Unit

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H4D
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Care and maintenance of digital capture unit
Handling and storage
 • AlwaysreplacetheprotectiveCCD/ltercoverwhenthedigitalcaptureunitisnot
mounted on your camera.
 • DonottouchtheexposedCCD/lterwithyourngers.
 • Keepallforeignobjectsoutofthecameraopening.
 • Storeyourdigitalcaptureunitawayfrommoistureandexcessiveheat.Pleasesee
“TechnicalSpecications”forcompleteoperationalandstoragerequirements.
 • Protectyourdigitalcapture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 digital capture unit’s infrared (IR) lter. 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 lter!
Sometimes, however, small particles will get stuck to the surface of the IR lter, requiring
for a more thorough cleaning, involving either uid or wipes. For a good safe cleaning,
follow descriptions below.
Basic air-cleaning procedure / removing the digital capture unit
1. Remove a FireWire if connected.
2. Remove the viewnder (see ‘Attaching and removing the viewnder’ if unsure).
3. While pushing the safety catch backwards on the digital capture unit (3 illus. A) push
the lever of the digital capture unit release button to the right (3 illus. B) and while
maintaining that position press the centre of the button rmly inwards towards the
camera body (3 illus. C) to nally release the magazine.
4. Clean the outside surface of IR lter by spraying it with clean compressed air (see
warning above rst). If this is not enough, then use one of the procedures outlined
below.
5. Reattach the digital capture 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
lter, then you may have dust either on the inside of the IR lter or on the CCD itself.
WARNING:
Never attempt to remove the glass lter from the front of the CCD—you will prob-
ably ruin the CCD if you do so. If dust manages to get between the IR lter and CCD,
it can only be removed at the Hasselblad factory. Contact your Hasselblad dealer for
assistance.
Cleaning using the HAMA cleaning uid and tissues
Note! Hasselblad recommends HAMA Optic Cleaning Fluid 5902.
1. Carefully spray the uid onto the IR lter at a distance of 10-15 cm (4-5 inches), so
that the uid is applied onto the lter as a thin, even haze. 1-2 sprays are enough. If
you apply too little, the uid will start to dry up before you start wiping the lter. As
an alternative you can spray the uid onto the tissue rst, and then apply it to the
lter as you wipe it.
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