MP8670/8745/8755/8770 Table of Contents
Copyright
2000, 3M IPC. All Rights Reserved.
i
SECTION 1 ADJUSTMENTS
1-1
Adjustments ................................................................................................................................................ 1-1
1-2
Section Contents ......................................................................................................................................... 1-1
1-3
Machine Identification ................................................................................................................................ 1-1
1-4
Technical Tools........................................................................................................................................... 1-2
1-5
Cleaning LCD Panels.................................................................................................................................. 1-3
1-6
Convergence................................................................................................................................................ 1-4
1-7
White Balance ............................................................................................................................................. 1-6
SECTION 2 DISASSEMBLY/REASSEMBLY
2-1
Overview ..................................................................................................................................................... 2-1
2-2
Required Tools............................................................................................................................................ 2-1
2-3
Steps for Removing Projector Components................................................................................................ 2-1
SECTION 3. TROUBLESHOOTING
3-1
Troubleshooting Checkpoints ..................................................................................................................... 3-1
3-2
Power Cannot be Turned on Flowchart ...................................................................................................... 3-2
3-3
Lamp Does Not Light Flowchart ................................................................................................................ 3-3
3-4
No Picture – RGB Only Flowchart ............................................................................................................. 3-5
3-5
No Picture – Video Only (RGB-Good) Flowchart ..................................................................................... 3-6
3-6
No Picture – RGB or VIDEO Flowchart .................................................................................................... 3-7
3-7
No Sound Flowchart ................................................................................................................................... 3-8
3-8
Cannot Control Mouse or RS232C Flowchart............................................................................................ 3-9
3-9
Cannot Control USB Mouse Flowchart .................................................................................................... 3-10
3-10 Signal Waveforms of P501, P601, and P704 ............................................................................................ 3-11
SECTION 4 THEORY AND DIAGRAMS
4-1
Theory of Operation.................................................................................................................................... 4-1
4-2
Color Theory ............................................................................................................................................... 4-3
4-3
LCD Structure Theory ................................................................................................................................ 4-4
4-4
Lamp Theory ............................................................................................................................................... 4-5
4-5
Optical System Layout ................................................................................................................................ 4-6
4-6
Block Diagram ............................................................................................................................................ 4-7
4-7
Main PWB Wiring Diagram ....................................................................................................................... 4-8
4-8
Optical Unit Wiring Diagram...................................................................................................................... 4-9
