Quantum Data 801GX Wartungshandbuch PDF herunterladen (Seite 3)

3M Multimedia Projector MP8620 Table of Contents

3M 1999

3-4. General/Projection Image Troubleshooting .......................................................................................3-7

3-4-1. Image is Disturbed or Unstable.............................................................................................3-7

3-4-2. No Computer Image Projected..............................................................................................3-7

3-4-3. No Video Image Projected....................................................................................................3-7

3-4-4. Mouse Does Not Work..........................................................................................................3-8

3-4-5. Image Off Center...................................................................................................................3-8

3-4-6. Cannot Get Entire Image on the Screen................................................................................3-8

3-4-7. Washed Out Image................................................................................................................3-8

3-4-8. Humming Noise. Slowly Passing Horizontal Bars ...............................................................3-9

3-4-9. No Power. Power Shuts Off During Presentation.................................................................3-9

4. T heory and Diagrams ..................................................................................................................................4-1

4-1. Overview............................................................................................................................................4-1

4-2. Theory of Operation...........................................................................................................................4-1

4-2-1. Power Supply Circuit............................................................................................................4-1

4-2-2. Video Input and AD Conversion...........................................................................................4-1

4-2-3. RGB Input and AD Conversion ............................................................................................4-2

4-3. Color Theory......................................................................................................................................4-3

4-3-1. Color......................................................................................................................................4-3

4-3-2. Electromagnetic Spectrum ....................................................................................................4-3

4-4. LCD Structure Theory........................................................................................................................4-4

4-4-1. LCD Cells..............................................................................................................................4-4

4-4-2. How Light Passes Through An LCD ....................................................................................4-4

4-4-3. Example Projection...............................................................................................................4-4

4-5. Lamp Theory......................................................................................................................................4-5

4-6. Keystone Correction...........................................................................................................................4-6

4-7. Optical System Layout.......................................................................................................................4-7

4-8. Connection Diagrams.........................................................................................................................4-8

4-9. Wiring Diagrams................................................................................................................................4-9

4-10. Internal Cabling Pinout Tables.........................................................................................................4-10

4-10-1. Interface Board Connector Locations .................................................................................4-10

4-10-2. Audio Board Connector Locations......................................................................................4-11

4-11. Computer/Video/Audio Connections...............................................................................................4-12

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