Dukane DC80A Manuel utilisateur
Document Camera Service Manual
DC80A
V1.0 05/01/2001
1
Introduction............................................................................................................3
Package Check.......................................................................................................3
Installation..............................................................................................................3
Control Button Description....................................................................................5
Some Using Tips....................................................................................................5
Tip 1: How to avoid the hot spot....................................................................5
Tip 2: How to control the camera to get best picture.....................................5
Tip 3: How to avoid a shadow image on document.......................................5
Tip 4: How to avoid image flicking...............................................................5
Maintenance...........................................................................................................6
Replacing the mainboard and CCD board.....................................................6
Replacing the Hinge.......................................................................................8
Replacing the internal slide of the arm........................................................10
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Document Camera Service Manual
Introduction
This Document Camera is equipped with the most advanced RGB progressive CCD to
capture the details of documents and output the high quality RGB signal. Also provide
some easy but useful functions such as flip image, adjust the brightness and digital
zoom to let your presentation successful
Package Check
The Document Camera comes with the parts listed below. Check if all parts are
included. If anything is missing, contact your authorized dealer or service center.
Note : The power adapter is a safety related part. Please contact your authorized
dealer or service center for replacement.
Document Camera♦
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User’s Manual
VGA Cable
Power Adapter
Lamp
Power Cord
Diffusion Film
Installation
Place the Document Camera on a sturdy table and avoid a lamp just overhead to
get shadow image or Hot spot. Connecting as Fig.1
Note : Be sure the power switch is set in OFF position.
Figure 1: System Configuration of Document Camera
3
Figure 2: Front side view of Document Camera
Figure 3: Rear Side View of Document Camera
(1)FocusRing (7)LampPower
(2) Height Adjust Column (8) Lamp
(3) Angle Adjust Column (9) DC12V In
(4)ControlPanel (10)VGAIn
(5)LED (11)VGAOut
(6) Power Switch
DIP switch description
Switch Description
SW1 ON:SVGA output format ; OFF:XGA output
format
SW2 ON :Flickerless Disable ;OFF: Flickerless enable
SW3 ON:50 Hz AC power ; OFF: 60Hz AC power
SW4 ON:AE Disable ; OFF:AE enable
4
Note : The DIP switch setting will be taken effect only when you re-power on the
camera
Control Button Description
Source
Select Source selection : computer VGA or
camera
Digital
Zoom Zooming from 100% to 300%
Image
Type Photo , Text , Invert or Mono
Flip Rotate the image 180 degrees
Decrease
Brightness Decrease picture brightness
Increase
Brightness Increase picture brightness
Some Using Tips
Tip 1: How to avoid the hot spot.
Glassy paper will result serious reflection of environment light and the
lamp. If the document paper is glassy, you can take measures to
overcome this problem.
Change the camera location to avoid the overhead light source.♦
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Turn off the lamp.
Put the diffuse film on the paper to prevent a direct reflection.
Tip 2: How to control the camera to get best picture
Turn on the lamp to get more light for better S/N ratio.
Select the proper image type setting to get the best quality.
Photo: Color picture, such as photo, color catalog ..
Text : Text rich document , such as report, text book
Invert : Negative film
Mono: Gray only picture.
Adjust the focus ring to get sharpening picture.
Put the document as flatten as possible.
Tip3: How to avoid a shadow image on document
Don’t place your camera just beneath the lamps. You can turn off the
room’s light and turn on the lamp.
Tip 4: How to avoid image flickering
The image flickering is caused by fluorescent lamp with power AC
frequency 60Hz/50Hz light flickering. Please check your power system
frequency and set the DIP switch accordingly to remove the flickering
problem.
Note : The DIP switch setting will be taken effect only when you re-power on
the camera
5
Maintenance
Replacing the mainboard
1.There are four screws on the CCD Box Cover.
2.Loosen four screws and open the CCD Box Cover. The mainboard and CCD
board are under the iron sheet.
3.Remove the CCD lens unit and detach the flat cable. Loosen one screw and
thentake the mainboard and the CCD Board.
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4.There is a screw securing the mainboard and CCD Board.
5.Detach the mainboard and CCD board carefully and then get each one of
them.
6. The same applies to the CCD housing and arm joint (which has no spring).
(0.7kgf-cm)
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ReplacingtheHinge
1. There are four screws under the rubber foot. Loose them and open the Top
Base Cover.
2. Remove the screw and spring used to fasten the hinge.
3. Detach the flat cable.
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4. Remove two screws that keep the hinge in place.
5. Replace the hinge, and repeat the above steps in reverse order. (3.5kgf-cm)
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Replacing the internal slide of the arm
1. Detach the arm from the base as steps shown above.
2. Remove the 17 screws that keep the lower arm in place, and remove the
cover. You now have access to the interior.
3. Detach the slide, and replace it with the new part. Then, repeat the above
steps in reverse order.
10
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