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This service manual provides service instructions for LCD Projection TV Models and Chassis:
                          V28 Chassis              V28+ Chassis
                          WD-52527                 WD-52528
                          WD-62527                 WD-62528
This service manual includes:
    1. Assembly and disassembly instructions for the front and rear cabinet components.
    2. Servicing of the Lenticular Screen and Fresnel Lens.
    3. Servicing down to major components, chassis, PWBs, Light Engine, Lamp Ballast, etc..
    4. Electrical adjustments.
    5. Optical Adjustments.
    6. Lead Free Soldering.
    7. Chip parts replacement procedures.
    8. Simplified circuit path diagrams.
The parts list section of this service manual includes:
    1. Cabinet and screen parts.
    2. Electrical parts.
Block diagrams of the above listed models are included in this service manual for better understanding of the circuitry.

Training Manual
Including…
Down-to-1
High Speed Troubleshooting


Introduction
About Mitsubishi Electric US ................................................................................. 1
Chapter 1... Display Technologies and PTV Product Line
Display Technologies ......................................................................................... 1-1
PTV Product Line............................................................................................... 1-3
Chapter 2... Disassembly and Service
Engines ............................................................................................................ 2-1
Identification ....................................................................................................... 2-4
Chassis ............................................................................................................ 2-4
PWBs ............................................................................................................ 2-5
Mirror Access..................................................................................................... 2-7
LCD Access for Cleaning ................................................................................... 2-8
Chapter 3... Alignment Procedures
Option Menu ...................................................................................................... 3-1
Service Mode .................................................................................................... 3-1
Mechanical Adjustments ..................................................................................... 3-2
Electrical Adjustments ........................................................................................ 3-8
Chapter 4... Down-to-1 Troubleshooting
Front Panel LEDs .............................................................................................. 4-1
Self Diagnostics................................................................................................. 4-2
Interface Troubleshooting ................................................................................... 4-3
Symptom/Cause Troubleshooting....................................................................... 4-4
Chapter 5... Circuit Block Diagrams
Power Supplies ................................................................................................. 5-1
Video Signal Path ............................................................................................ 5-11
Sound Signal Path ........................................................................................... 5-15
Control Circuitry ............................................................................................... 5-16
Lamp Control Circuitry ..................................................................................... 5-17
Protection Circuitry........................................................................................... 5-18