Mitsubishi Electric WD-52531 Service Manual page 3

INTRODUCTION ................................................................................................................................ 5
Dimensions, weight, power usage, etc. ........................................................................................... 5
PRODUCT SAFETY NOTICE ............................................................................................................. 5
SAFETY PRECAUTIONS ................................................................................................................. 6
DISASSEMBLY .................................................................................................................................. 7
Rear Cover Removal ........................................................................................................................ 7
Chassis Removal and Disassembly ................................................................................................ 7
LCD Engine Removal .................................................................................................................... 10
Front Disassembly ........................................................................................................................ 13
Lenticular Screen and Fresnel Lens Removal and Replacement .................................................... 14
ADJUSTMENTS ............................................................................................................................... 15
Option Menu & Remote Control .................................................................................................... 15
Digital Signal Strength ................................................................................................................... 15
Front Panel Initialization ................................................................................................................ 16
Defaults ........................................................................................................................................ 17
A/V Defaults ................................................................................................................................. 18
LED Indicator Diagnostics ............................................................................................................. 18
Error Codes Operational Check ..................................................................................................... 19
Error Codes List ................................................................................................................... 19
Lamp Troubleshooting ................................................................................................................... 20
Lamp Control diagram .......................................................................................................... 21
Lamp Troubleshooting Flow Chart ........................................................................................ 21
Service Adjustment Mode ............................................................................................................. 22
Service Adjustment Mode Operation .................................................................................... 23
Transferring data .................................................................................................................. 23
Optical Engine Adjustment ............................................................................................................ 23
Test Signal activation ........................................................................................................... 23
Preliminary .......................................................................................................................... 23
Rotation and Keystone Distortion Adjustment ............................................................................... 24
After completing Light Engine Adjustments .......................................................................... 24
Horizontal & Vertical Position ............................................................................................... 25
USING LEAD FREE SOLDER .......................................................................................................... 26
CHIP PARTS REPLACEMENT ......................................................................................................... 27
REPLACEMENT PARTS .................................................................................................................. 28
Parts Ordering .............................................................................................................................. 28
Critical and Warranty Parts Designation........................................................................................ 28
Parts Tolerance Codes .................................................................................................................. 28
Quick Reference List ........................................................................................................................ 29
SERVICE PARTS LIST .................................................................................................................... 30
SCREEN ASSEMBLY PARTS LIST .................................................................................................. 37
CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 38
Main Power Supply ....................................................................................................................... 38
LCD Light Engine & Fan Power Supplies ...................................................................................... 39
DC to DC Supplies ........................................................................................................................ 39
Analog Video Signal Path ............................................................................................................. 40
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MODEL: WD-52531 / WD-62531 / WD-62530
CONTENTS
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