Dukane DC80A Manuel utilisateur

Document Camera Service Manual

DC80A

V1.0 05/01/2001

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

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♦

♦

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

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

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.♦

♦

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

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.

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)

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.

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)

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.

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