Mitsubishi Electric WD-52631 User manual

• Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351JeronimoRoad,Irvine,CA 92618-1904
Copyright © 2006 Mitsubishi Digital ElectronicsAmerica, Inc.
AllRightsReserved
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCTSAFETYNOTICE" containedinthis manual.
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MITSUBISHIELECTRIC
DLPPROJECTIONHDTV
V33 CHASSIS
SPECIFICATIONS
• Power Input : AC 120V, 60Hz
•Power Usage : See table on page 5
• LightEngine : DLPTM (1920 x 1080 pixels)
• Light Source : 150W (52, 57 & 65" models)
• Channel Range : Air VHF - 2~13, UHF - 14~69
Analog Cable - 1~125
Digital Cable - 1~135
•Antenna Input : 2 RF 75Ω unbalanced
• Tuning (V33) : 1NTSC/ATSC/QAM
1 Out of Band for CableCARDTM
(WD-57731 & WD-65731 Only)
• Cabinet Dimensions : See Table on page 5
• Weight : See table on page 5
• Speakers (4Ω 10W) : Two 5.75"x2.4"Oval
• Input Level : VIDEOINJACK(RCAType)
1.0Vp-p 75Ωunbalanced
: AUDIOIN JACK(RCAType)
-4.7dBm 43kΩunbalanced
: S-VIDEOIN JACK
(Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST)
75Ωunbalanced
: COMP/Y,Cr,Cb (RCAType)
Y: 1.0 Vp-p Cr, Cb: 700mVp-p
• Output Level : VIDEOOUTJACK (RCAType)
1.0Vp-p 75Ωunbalanced
: AUDIOOUT JACK (RCAType)
-4.7dBm 4.7kΩunbalanced
• Digital : IEEE-1394 I/O Jacks
: AC-3 Digital Audio Output
(RCAType)
: HDMITM
: DVI-I
: Lead-Free solder PWBs
WD-52327
V33 Chassis
WD-52631
WD-57731
WD-65731
WD-52527
Pb Solder
Pb Solder
WD-57731

Page 3
MODEL: WD-52631 / WD-57731 / WD-65731
INTRODUCTION ................................................................................................................................5
Dimensions,weight, powerusage, etc............................................................................................5
PRODUCTSAFETY NOTICE ............................................................................................................. 5
SAFETY PRECAUTIONS .................................................................................................................6
DISASSEMBLY ..................................................................................................................................7
RearCoverRemoval ........................................................................................................................7
ChassisRemovaland Disassembly ................................................................................................7
OpticalEngineRemoval ................................................................................................................ 11
WD-52631FrontDisassembly ......................................................................................................12
WD-57731& WD-65731 FrontDisassembly ................................................................................. 13
SERVICINGTHE LENTICULAR LENS AND FRESNEL SCREEN..................................................... 14
LenticularScreenand Fresnel LensRemovaland Replacement.................................................... 14
ADJUSTMENTS ...............................................................................................................................15
OptionMenu, Remote Controland Digital Signal Strength............................................................. 15
Initialization................................................................................................................................... 16
Defaults ........................................................................................................................................ 17
LEDIndicator Diagnostics............................................................................................................. 19
ErrorCodesOperationalCheck..................................................................................................... 19
ErrorCodes List................................................................................................................... 20
Lamp Troubleshooting ................................................................................................................... 20
LampControldiagram.......................................................................................................... 21
LampSwitch Disabling ........................................................................................................ 21
LampTroubleshootingFlowChart ........................................................................................ 22
CableCARD™Troubleshooting ..................................................................................................... 23
ServiceAdjustmentMode ............................................................................................................. 24
ServiceAdjustment Mode Operation .................................................................................... 24
Transferringdata .................................................................................................................. 25
OpticalEngineAdjustment............................................................................................................ 26
TestSignal activation ........................................................................................................... 26
Preliminary .......................................................................................................................... 26
Rotationand KeystoneDistortionAdjustment ...................................................................... 28
Aftercompleting Light EngineAdjustments .......................................................................... 28
Horizontal & Vertical Position............................................................................................... 29
USINGLEAD FREE SOLDER .......................................................................................................... 30
CHIPPARTSREPLACEMENT ......................................................................................................... 31
REPLACEMENTPARTS .................................................................................................................. 32
PartsOrdering .............................................................................................................................. 32
Criticaland WarrantyParts Designation........................................................................................32
PartsToleranceCodes.................................................................................................................. 32
QuickReference List ........................................................................................................................ 33
SERVICE PARTS LIST .................................................................................................................... 34
SCREENASSEMBLY PARTSLIST.................................................................................................. 41
CIRCUITRYBLOCK DIAGRAMS ..................................................................................................... 42
MainPower Supply ....................................................................................................................... 42
CONTENTS

Page 4
MODEL: WD-52631 / WD-57731 / WD-65731
xHD5Light Engine & Fan Power Supplies .................................................................................... 43
PWB-SIGNALVideo Path............................................................................................................. 43
PWB-DM Video Path .................................................................................................................... 44
SoundSelect Circuitry .................................................................................................................. 45
SoundSignal Path ........................................................................................................................ 46
OverallControlCircuitry ................................................................................................................ 47
CommandInputCircuitry............................................................................................................... 48
LampControlCircuitry .................................................................................................................. 49
xHD5Engine ProtectCircuitry ...................................................................................................... 50
Short Protect Circuit ..................................................................................................................... 50
AutoInput Detection ..................................................................................................................... 51
PowerDistribution......................................................................................................................... 52
SCHEMATICDIAGRAMS .....................................................................................................................
CableCARD is a trademark of Cable Television Laboratories, Inc.
Digital Light Processing, Digital Micro Mirror Device and DLP are Trademarks of Texas Instruments.
Dolby and Dolby digital are registered trademarks of Dolby Laboratories.
DTV Link is a trademark of Consumer Electronics Association
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing, LLC.

MODEL: WD-52631 / WD-57731 / WD-65731
Page 5
INTRODUCTION
This service manual provides service instructions for the V33 chassis. The specific models for this chassis type,
dimensionsand weight are listed below. Servicepersonnel should read this manualthoroughly before servicing these
chassis.
Thisservice manualincludes:
1. Assembly and disassembly instructions for cabinet and chassis components.
2. Servicingof the Lenticular Screenand FresnelLens.
3. Servicingprinted circuitboards (PCBs).
4. Electrical and Mechanical adjustments.
6. Chipparts replacementprocedures.
7. Circuitpath diagrams.
The parts list section of this service manual includes:
1. Cabinetand screen parts.
2. Electrical parts.
Schematicand block diagrams of the above listed models are included in this service manual for better understanding
of the circuitry.
PRODUCT SAFETY NOTICE
Manyelectrical and mechanical parts in television receivers have special safety related characteristics. These charac-
teristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by
usingreplacement componentsrated for higher voltage, wattage, etc.
Replacementparts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading on the schematic diagram and parts list of this
service manual, and by marking on the supplementary sheet for this chassis to be issued subsequently. Therefore,
the replacement for any safety part should be identical in value and characteristics.
MODEL CHASSIS HEIGHT WIDTH DEPTH WEIGHT POWER
USAGE
WD-52631 V33 33.3" 47.1" 17.1" 87.2 lbs 250W
WD-57731 " 36.3" 51.5" 18" 96 lbs 250W
WD-65731 " 40.8" 58.5" 19.8" 103.7 lbs 250W