Mitsubishi Electric WD-52327, Service Manual

Page: 3 / 51

MODEL: WD-52327 / WD-62327
Page 3
INTRODUCTION ............................................................................................................................... 5
PRODUCT SAFETY NOTICE ........................................................................................................... 5
SAFETY PRECAUTIONS ................................................................................................................. 6
DISASSEMBLY
WD-52327 & WD-62327
Front Cabinet Components .................................................................................................... 7
Rear Cabinet Components ..................................................................................................... 8
CHASSIS REMOVAL
Chassis removal procedure .................................................................................................... 9
Shield Removal .................................................................................................................... 10
Chassis PWB locations ....................................................................................................... 11
Accessing the Lamp Ballast ................................................................................................ 12
OPTICAL ENGINE REPLACEMENT
Optical Engine Mounting ...................................................................................................... 13
Removing the Optical Engine ............................................................................................... 14
Removing DMD Heat Sensor ................................................................................................ 15
Removing Bottom Plate & Black Support Bracket. ............................................................... 15
Installing the Optical Engine ................................................................................................ 16
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
Removal of the Lenticular Screen and Fresnel Lens ............................................................. 17
Installation of the Lenticular Screen and Fresnel Lens .......................................................... 19
ELECTRICAL ADJUSTMENTS
Equipment .................................................................................................................................... 20
Initial Setup (Option Menu) ............................................................................................................ 21
Main Menu Defaults ...................................................................................................................... 21
A/V Memory Defaults .................................................................................................................... 22
LED Indications ............................................................................................................................ 22
LED Dignostic Check .................................................................................................................... 23
Circuit Adjustment Mode ............................................................................................................... 23
Adjustment Items List ................................................................................................................... 25
Activating Internal Test Patterns .................................................................................................... 26
Adjustment Procedures ................................................................................................................ 27
Main & Sub Y level adjustments .......................................................................................... 27
Main & Sub Color level adjustments ..................................................................................... 27
White Balance Adjustments ................................................................................................. 28
Horizontal & Vertical Position adjustments .......................................................................... 28
Mechanical Adjustments ............................................................................................................... 29
Required Front Disassembly ................................................................................................ 29
Required Rear Disassembly ................................................................................................. 29
Picture Rotation Adjustment ............................................................................................... 30
Horizontal & Vertical Keystone Distortion adjustments ......................................................... 31
QUICK REFERENCE PART LIST ..................................................................................................... 32
Service Parts List ........................................................................................................................... 33
Screen Parts List ............................................................................................................................ 41
CIRCUITRY BLOCK DIAGRAMS
Standby power Supplies ....................................................................................................... 42
Switched Supplies ............................................................................................................... 42
CONTENTS