OPERATING AND USER MANUAL Q-12 CoaXPress series
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Adimec
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APPENDIX A: CMOS SENSOR CLEANING INSTRUCTIONS
When you would like to clean the CMOS sensor because the sensor got contaminated with dust particles that
influence your image quality, this appendix describes the right procedure with the lowest chance on damage.
However, due to the high risk of sensor damage it is strongly advised to only perform cleaning when it is really
necessary and cannot be avoided.
NOTE:
Damage of the CMOS sensor due to scratches on the cover glass or ESD is not covered by warranty!
The correct working environment for cleaning is essential in order to ease cleaning and to prevent damage of the
CMOS sensor. Especially take care of the following precautions.
Precautions:
•
Take precautions to prevent ESD that can damage the CMOS sensor.
•
Never try to clean the CMOS sensor at a relative humidity lower than 30%. A relative humidity of 40% or
higher is preferred in order to minimize the chance of damage due to ESD.
•
It is advisable to use an ionizer, in order to minimize the built-up of ESD.
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Cleaning of the CMOS sensor and lens assembly is preferably performed in a clean room or clean
bench.
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Use non-fluffing Q-tips and Alcohol (or Hexane) for cleaning. De-ionized water may be necessary to
remove ionic contaminants like salts.
•
Any Q-tip should be used only once - you will otherwise move dirt from one place to another.
•
Be sure to clean the lens mount of the lens before assembly.
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Never dry rub the window. This may cause static charges or scratches that can damage the CMOS
sensor.
Cleaning instructions:
1. First try to remove the contamination by using clean, dry air. (Use an ultra-filtered, non-residue dust
remover spray). Avoid blowing air into the screw thread of the lens mount, because this may cause
contamination on the CMOS sensor due to loose particles and traces of oil or grease.
If this step does not result in an acceptable result, continue with step 2.
2. Remove the lens mount by unscrewing the 4 screws (m3x6 screws; torx10) that hold the lens mount
(see Figure A-1).
3. Clean the CMOS sensor cover glass using alcohol or hexane and a Q-tip. Gently and carefully rub the
window always in the same direction, e.g. top - down.
4. Install the lens mount back on the camera.
Make sure that the maximum tightening force may not exceed 108 cNm.
