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CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
· Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2004 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHIELECTRIC Ser
Ser
Ser
Ser
Service
vice
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Manual
Manual
Manual
Manual
Manual
2004
DIGITAL LIGHT PROCESSINGTM PROJECTION TV
V26 CHASSIS
SPECIFICATIONS
· Power Input
: AC 120V, 60Hz
· Power Usage
: 275W
· Light Engine
: DLP 0.85" 1280 x 720p
· Lamp
: 120W VIP Type
· Channel Frequencies
: Air - VHF 2 ~ 13 UHF 14 ~ 69
Analog Cable - 1 ~ 125
Digital Cable - 1 ~ 135
· Antenna Input
: 2 RF 75
unbalanced
· Tuning
: 1 NTSC/ATSC/QAM64&256
1 CableCARDTM Slot
1 NTSC for PIP
· Cabinet Dimensions
: [WD-52xxx] 37.2" x 49.6" x 17.4"
[WD-62xxx] 43.7" x 58.3" x 19.9"
· Weight
: [WD-52xxx] 132.4 lbs
[WD-62xxx] 165.5 lbs
· Speakers (10Wx2)
: 5" Coaxial x 2
· Input Level
: VIDEO IN JACK (RCA Type)
1.0Vp-p 75
unbalanced
AUDIO IN JACK (RCA Type)
500mV RMS full scale into 43k
,
unbalanced
: S-VIDEO IN JACK
(Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST)
75
unbalanced, 480i
: COMP / Y, Pr, Pb (RCA Type )
Y: 1.0 Vp-p Pr, Pb: 700mVp-p, 480i,
480p, 720p, 1080i
: DTV / Y(G), Pr(R), Pb(B), H, V (RCA
Type) Y: 1.0 Vp-p Pr, Pb: 700mVp-p,
75
, H, V: 3.0Vp-p, 480i, 480p,
720p, 1080i
: VGA / R,G,B,V,H (15 pin D) 640x480,
800x600, 1024x768, 720x1280,
60Hz
· Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO OUT JACK (RCA Type)
500mV RMS
(+/-200mV)
full scale into 4.7k
, unbalanced
· Digital
: IEEE-1394 I/O Jacks
Interface
: AC-3 Digital Audio Output (RCA
Type)
1.5V RMS
: HDMITM
: MonitorLinkTM Control/RS-232C
: 4 Memory Card Reader Inputs
WD-52525
V26
V26+
V26++
WD-52525 WD-52725 WD-52825
WD-62525 WD-62725 WD-62825
MODELS


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MODEL: WD-52525 / WD-52725 / WD-52825 / WD-62525 / WD-62725 / WD-62825
Page 3
INTRODUCTION ................................................................................................................................5
PRODUCT SAFETY NOTICE ...........................................................................................................5
SAFETY PRECAUTIONS ................................................................................................................. 6
DISASSEMBLY PROCEDURES ......................................................................................................... 7
Cabinet Front Disassembly ............................................................................................................. 7
Cabinet Rear Disassembly .............................................................................................................. 9
ELECTRICAL CHASSIS REPLACEMENT ........................................................................................ 10
OPTICAL ENGINE REPLACEMENT ................................................................................................. 13
DATA COPY PROCEDURE ............................................................................................................... 16
DIAMONDSHIELDTM REPLACEMENT.............................................................................................. 17
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS ..................................................... 18
INITIAL SETUP ................................................................................................................................ 20
FRONT PANEL LED DIAGNOSTICS ................................................................................................ 22
SERVICE ADJUSTMENTS ............................................................................................................... 24
Equipment .................................................................................................................................... 24
Circuit Adjustment Mode ............................................................................................................... 24
Adjustment Items and Initial Data Settings ................................................................................... 26
Electrical Adjustments .................................................................................................................. 27
Mechanical Adjustments ............................................................................................................... 27
REPLACEMENT PARTS .................................................................................................................. 30
SCREEN ASSEMBLY PARTS .......................................................................................................... 33
CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 35
PCB INTERCONNECT DIAGRAM
CONTENTS


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MODEL: WD-52525 / WD-52725 / WD-52825 / WD-62525 / WD-62725 / WD-62825
Page 4


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MODEL: WD-52525 / WD-52725 / WD-52825 / WD-62525 / WD-62725 / WD-62825
Page 5
INTRODUCTION
This service manual provides service instructions for PTV Models and Chassis:
V26 Chassis
V26+ Chassis
V26++ Chassis
WD-52525
WD-52725
WD-52825
WD-62525
WD-62725
WD-62825
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, Optical Engine, Lamp Ballast, etc..
4. Electrical adjustments.
5. Optical Adjustments.
6. Chip parts replacement procedures.
7. Simplified circuit path diagrams.
8. Overall PCB interconnect block diagram.
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.
PRODUCT SAFETY NOTICE
Many electrical 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
using replacement components rated for higher voltage, wattage, etc.
Replacement parts 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 by bold type in
the parts list of this service manual. Therefore, the replacement for any safety part should be identical in value
and characteristics.
Digital Light Processing, Digital Micromirror Device and DLP are trademarks of Texas Instruments.
CableCARD is a trademark of Cable Television Laboratories, Inc.
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.