MITSUBISHI WD73827 Service Manual

MITSUBISHI WD73827 Service Manual
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Service Manual for MITSUBISHI WD73827, downloadable as a PDF file.

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· Design specifications are subject to change without notice.

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Road, Irvine, CA 92618-1904

CAUTION:

Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and

"PRODUCT SAFETY NOTICE" contained in this manual.

Ser

Service

vice

Manual

2005

MITSUBISHIELECTRIC

DLP PROJECTION HDTV

V29 / V30 / V30+ / V31 CHASSIS

SPECIFICATIONS

· Power Input

: AC 120V, 60Hz

· Power Usage

: See table on page 5

· Light Engine

: DLPTM (1920 x 1080 pixels)

· Light Source

: 120W [V29,V30(52"&62")]

: 150W [V30(73"),V30+,V31]

· Channel Range

: Air VHF - 2~13, UHF - 14~69

Analog Cable - 1~25

Digital Cable - 1~35

· Antenna Input

: 2 RF 75

unbalanced

· Tuning (V29,V30)

: 1 NTSC/ATSC/QAM

1 Out of Band for CableCARDTM

1 NTSC for PIP

· Tuning (V30+, V31)

: 2 NTSC/ATSC/QAM

1 Out of Band for CableCARDTM

2 NTSC for PIP

· Cabinet Dimensions

: See Table on page 5

· Weight

: See table on page 5

· Speakers (8 Ohms 10W)

: Two 1.5" Round

Two 5.5"x2.2" Oval

· Input Level

: VIDEO IN JACK (RCA Type)

1.0Vp-p 75

unbalanced

: AUDIO IN JACK (RCA Type)

-4.7dBm 43k

unbalanced

S-VIDEO IN JACK

(Y/C separate type)

Y:1.0 Vp-p C:0.286Vp-p(BURST)

unbalanced

: COMP / Y, Cr, Cb (RCA Type)

Y: 1.0 Vp-p Cr, Cb: 700mVp-p

· Output Level

: VIDEO OUT JACK (RCA Type)

1.0Vp-p 75

unbalanced

: AUDIO OUT JACK (RCA Type)

-4.7dBm 4.7k

unbalanced

· Digital

: IEEE-1394 I/O Jacks

: Digital Audio Output

(RCA Type)

: HDMITM

MonitorLinkTM RS-232 Control

: Memory Card Reader

: Lead-Free solder PWBs

WD-52327

V29 Chassis

WD-52627

WD-62627

V30 Chassis

WD-52628

WD-62628

WD-73727

WD-52527

Pb Solder

WD-62827

V30+ Chassis

WD-62827

WD-73827

V31 Chassis

WD-62927

WD-73927

MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927

Page 3

INTRODUCTION ................................................................................................................................5

Model Dimensions and Weight Specifiations ................................................................................... 5

PRODUCT SAFETY NOTICE ............................................................................................................. 5

SAFETY PRECAUTIONS ................................................................................................................. 6

DISASSEMBLY ................................................................................................................................. 7

Front Disassembly (WD-52627 / WD-52628 / WD-62627 / WD-62628 ............................................. 7

Front Disassembly (WD-62827) ...................................................................................................... 8

Front DisassembLY (WD-62927) ................................................................................................... 11

Front Disassembly (WD-73727 / WD-73827) ................................................................................. 15

Front Disassembly (WD-73927) ....................................................................................................17

Rear Disassembly ........................................................................................................................ 19

Chassis Disassembly & Accessing PWBs ................................................................................... 20

Out of Cabinet Chassis Operation ................................................................................................. 26

52" & 62" Models Optical Engine Replacement ............................................................................. 29

73" Models Optical Engine Replacement ...................................................................................... 34

DIAMOND SHIELDTM Removal ........................................................................................................ 38

SERVICING THE LENTICULAR LENS AND FRESNEL SCREEN ..................................................... 39

Removal of the Lenticular Screen and Fresnel Lens ...................................................................... 39

Installation of the Lenticular Screen and Fresnel Lens ................................................................... 40

ADJUSTMENTS ............................................................................................................................... 41

Option Menu & Defaults ................................................................................................................ 41

LED Indicator Diagnostics ............................................................................................................. 42

Error Codes Operational Check ..................................................................................................... 43

Remote Operational Mode ............................................................................................................ 44

Service Adjustment Mode ............................................................................................................. 44

Service Adjustment Mode Operation .................................................................................... 44

Resetting Data to factory values and Transferring data ......................................................... 45

Optical Engine Adjustment ............................................................................................................ 46

Test Signal activation ........................................................................................................... 46

Preliminary ................................................................................................................................... 46

Accessing Mechanical Adjustments ............................................................................................. 47

Models WD-52627 / 62627 / 52628 / 62628 ......................................................................... 47

Models WD-63827 & WD-62927 .......................................................................................... 48

Models WD-73727 / 73827 &WD-73927 ............................................................................... 49

Locking Screws & Wedge Removal .............................................................................................. 50

Rotation Adjustmentt ........................................................................................................... 51

Keystone Distortion Adjustment ........................................................................................... 51

After Adjustment .................................................................................................................. 51

Hortizontal & Vertical Position .............................................................................................. 51

USING LEAD FREE SOLDER .......................................................................................................... 52

CHIP PARTS REPLACEMENT ......................................................................................................... 53

REPLACEMENT PARTS .................................................................................................................. 54

Parts Ordering .............................................................................................................................. 54

Critical and Warranty Parts Designation ........................................................................................ 54

Parts Tolerance Codes .................................................................................................................. 54

Quick Reference List .................................................................................................................... 55

CONTENTS

MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927

Page 4

SERVICE PARTS LIST .................................................................................................................... 56

SCREEN ASSEMBLY PARTS LIST .................................................................................................. 67

WD-52627 / WD-52628 / WD-62627 / WD-62628 .......................................................................... 67

WD-62827 / WD-62927 ................................................................................................................. 68

WD-73727 / WD-73827 / WD-73927 ............................................................................................. 69

CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 71

Main Power Supply ....................................................................................................................... 71

Lamp Ballast DC Supply ............................................................................................................... 72

Fans Power Supply ....................................................................................................................... 72

Optical Engine Power Supply ........................................................................................................ 73

HDD Power Supply ((V30+ & V31 Only) ........................................................................................ 73

Analog Video Signal Path ............................................................................................................. 74

Digital Video Signal Path .............................................................................................................. 75

HDD Record Signal Path ............................................................................................................... 76

Sound Signal Path ........................................................................................................................ 77

Command Input Circuitry ............................................................................................................... 78

Serial Data Control Lines .............................................................................................................. 78

Lamp Control Circuitry .................................................................................................................. 79

Lamp, Engine and Fan's Protect circuitry ..................................................................................... 80

TV Guide On screen® ................................................................................................................... 80

SCHEMATIC DIAGRAMS .....................................................................................................................

PCB LAYOUT DIAGRAMS ...................................................................................................................

MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927

Page 5

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.

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.

CableCARD is a trademark of Cable Television Laboratories, Inc.

TV Guide On Screen is a registered trademark of Gemstar Development Corp.

HDMI is a trademark of HDMI Licensing, LLC.

MODEL

CHASSIS

HEIGHT

WIDTH

DEPTH

WEIGHT

POWER

USAGE

WD-52627

V29

34 in.

49.6 in.

18.6 in.

121 lbs.

295W

WD-52628

V30

"""

WD-62627

V29

40.5 in.

58.3 in.

20.3 in

133 lbs.

WD-62628

V30

"""

WD-62827

V30+

60.3 in.

310W

WD-62927

V31

330W

WD-73727

V30

44.8 in.

69.9 in.

21.5 in.

165 lbs.

335W

WD-73827

V30+

350W

WD-73927

V31

69.8 in.

"""

Dimensions/Weight

INTRODUCTION

This service manual provides service instructions for DLP Projection TV Models and Chassis:

Pb Solder

The PWBs used in the V28 and V28+ chassis are constructed using Lead-Free solder. When

servicing use only recommended Lead-Free solder (refer to page 48).

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