Quantum Data 801GX Wartungshandbuch Seite 13
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3M Multimedia Projector MP8670/8745/8755/8770 Adjustments
Copyright 2000, 3M IPC. All Rights Reserved. 1-11
2
Alignment
1-7-6. Ghost Adjustment
Adjustment Preparation:
1. Make this adjustment after completing SUB H POSI.
2. Use a SVGA (MP8670) or XGA (MP8745), VESA
(60) timing signal to input a 0.7V p-p cross hatch
signal.
3. Use H-PHASE in the Adjustment Menu to adjust the
cross hatch pattern so it is most clearly visible.
Adjustment Procedure:
4. Display Ghost Test Pattern.
5. Use S/H – GHOST (R) to adjust so that the Red
Ghost is at a minimum.
- Service Manual 1
- Projector 1
- 1. Adjustments 3
- (#1 Magnetic Long Shaft) 4
- (3/16” or 1/4” Blade) 4
- 1-5. Cleaning LCD Panels 5
- 1-6. Convergence 6
- 1-6-1. Necessary Tools 6
- 1-6-2. Set Up Test Generator 6
- 1-6-3. Convergence Check 7
- 1-7. White Balance 8
- 1-7-1. Necessary Tools 8
- 1-7-3. Access Test Menu 9
- 1-7-4. S/H Timing Adjustment 11
- 2Alignment 12
- 1-7-6. Ghost Adjustment 13
- Ghost is at a minimum 14
- 1-7-7. Flicker Adjustment 16
- X = 0.280 ±± 0.005 19
- Y = 0.340 ±± 0.01 19
- Y = 0.345 ±± 0.01 20
- X = 0.270 ±± 0.03 20
- Y = 0.320 ±± 0.03 20
- No. 2 = Y2 (lux) 22
- No. 3 = Y3 (lux) 22
- 2. Disassembly/Reassembly 27
- 2-3-1. Remove Top Cover 28
- 2-3-2. Remove Main PWB Board 30
- 2-3-3. Remove Service Board 31
- 2-3-5. Remove RGB Input Board 33
- Dichroic 34
- 2-3-7. Remove Lens Assembly 35
- 2-3-8. Remove Ballast 36
- 2-3-10. Remove DC Power Fan 38
- 2-3-11. Remove Exhaust Fan 39
- 3. Troubleshooting 40
- 3-3. Lamp Does Not Light 42
- 3 Fans have Rotation Sensors 43
- 3-4. No Picture – RGB Only 44
- 3-7. No Sound 47
- RS232C PS/2 ADB Serial 48
- 4. Theory and Diagrams 52
- 4-2. Color Theory 54
- 4-2-1. Color 54
- 4-3. LCD Structure Theory 55
- 4-3-1. LCD Cells 55
- 4-3-3. Example Projection 55
- 4-4. Lamp Theory 56
- 4-5. Optical System Layout 57
- 4-6. Block Diagram 58
- 4-7. Wire Diagrams 59
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