Mitsubishi WD-73927, WD-73827, WD-73727, WD-62627, WD-62827 User Manual
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20052005
2005
20052005
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MITSUBISHI ELECTRIC
ManualManual
Manual
ManualManual
DLP PROJECTION HDTV
V29 / V30 / V30+ / V31 CHASSIS
V29 Chassis
WD-52627
WD-52327
WD-52527
WD-62827
WD-62627
V30+ Chassis
WD-62827
WD-73827
Pb Solder
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
SPECIFICATIONS
• Power Input : AC 120V, 60Hz
• Power Usage : See table on page 5
• Light Engine : DLP
• Light Source : 120W [V29,V30(52"&62")]
• Channel Range : Air VHF - 2~13, UHF - 14~69
• Antenna Input : 2 RF 75Ω unbalanced
• Tuning (V29,V30) : 1 NTSC/A TSC/QAM
• T uning (V30+, V31) : 2 NTSC/A TSC/QAM
TM
(1920 x 1080 pixels)
: 150W [V30(73"),V30+,V31]
Analog Cable - 1~25
Digital Cable - 1~35
1 Out of Band for CableCARD
1 NTSC for PIP
1 Out of Band for CableCARD
2 NTSC for PIP
TM
TM
• Input Level : VIDEO IN JACK (RCA T ype)
1.0Vp-p 75Ω unbalanced
: AUDIO IN JACK (RCA T ype)
-4.7dBm 43kΩ unbalanced
: S-VIDEO IN JACK
(Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST)
75Ω unbalanced
: COMP / Y , Cr, Cb (RCA T ype)
Y: 1.0 Vp-p Cr, Cb: 700mVp-p
• Output Level : VIDEO OUT JACK (RCA T ype)
1.0Vp-p 75Ω unbalanced
: AUDIO OUT JACK (RCA T ype)
-4.7dBm 4.7kΩ unbalanced
V30 Chassis
WD-52628
WD-62628
WD-73727
V31 Chassis
WD-62927
WD-73927
• 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
• Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2005 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
• Digital : IEEE-1394 I/O Jacks
: Digital Audio Output
(RCA T ype)
TM
: HDMI
:
MonitorLinkTM RS-232 Control
: Memory Card Reader
Pb Solder
: Lead-Free solder PWBs
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
CONTENTS
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
Optical Engine Replacement......................................................................................................... 29
DIAMOND SHIELD
SERVICING THE LENTICULAR LENS AND FRESNEL SCREEN..................................................... 35
Removal of the Lenticular Screen and Fresnel Lens ...................................................................... 35
Installation of the Lenticular Screen and Fresnel Lens................................................................... 36
ADJUSTMENTS ............................................................................................................................... 37
Option Menu & Defaults ................................................................................................................37
LED Indicator Diagnostics............................................................................................................. 38
Error Codes Operational Check..................................................................................................... 39
Remote Operational Mode ............................................................................................................ 40
Service Adjustment Mode ............................................................................................................. 40
Service Adjustment Mode Operation ....................................................................................40
Resetting Data to factory values and Transferring data ......................................................... 41
Optical Engine Adjustment............................................................................................................ 42
T est Signal activation ........................................................................................................... 42
Preliminary .......................................................................................................................... 42
Locking Screw ..................................................................................................................... 42
Trapezodial Distortion Adjustment........................................................................................ 43
Rotation Adjustment.............................................................................................................43
Hortizontal & V ertical Position.............................................................................................. 44
USING LEAD FREE SOLDER .......................................................................................................... 45
TM
Removal ........................................................................................................ 34
CHIP P ARTS REPLACEMENT .........................................................................................................46
REPLACEMENT P ARTS .................................................................................................................. 47
Parts Ordering .............................................................................................................................. 47
Critical and Warranty Parts Designation........................................................................................47
Parts T olerance Codes..................................................................................................................47
Quick Reference List .................................................................................................................... 48
SERVICE PARTS LIST .................................................................................................................... 49
SCREEN ASSEMBL Y PARTS LIST.................................................................................................. 60
WD-52627 / WD-52628 / WD-62627 / WD-62628.......................................................................... 60
WD-62827 / WD-62927 ................................................................................................................. 71
WD-73727 / WD-73827 / WD-73927 ............................................................................................. 62
Page 3
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 63
Main Power Supply....................................................................................................................... 63
Lamp Ballast DC Supply............................................................................................................... 64
Fans Power Supply....................................................................................................................... 64
Optical Engine Power Supply........................................................................................................ 65
HDD Power Supply ((V30+ & V31 Only)........................................................................................65
Analog Video Signal Path .............................................................................................................66
Digital Video Signal Path ..............................................................................................................67
HDD Record Signal Path...............................................................................................................68
Sound Signal Path ........................................................................................................................ 69
Command Input Circuitry............................................................................................................... 70
Serial Data Control Lines ..............................................................................................................70
Lamp Control Circuitry ..................................................................................................................71
Lamp, Engine and Fan’s Protect circuitry ..................................................................................... 72
TV Guide On Screen®...................................................................................................................72
SCHEMA TIC DIAGRAMS .....................................................................................................................
Page 4
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
INTRODUCTION
This service manual provides service instructions for DLP Projection TV Models and Chassis:
Dimensions/Weight
MODEL CHASSIS HEIGHT WIDTH DEPTH WEIGHT
WD-52627 V29 34 in. 49.6 in. 18. 6 in. 121 lbs. 295W
WD-52628
WD-62627 V29 40.5 in. 58.3 in. 20.3 in 133 lbs. "
WD-62628
WD-62827 V30+ " 60.3 in. " " 310W
WD-62927
WD-73727 V30 44.8 in. 69.9 in. 21.5 in. 165 lbs. 335W
WD-73827
WD-73927 V31"69.8 in."""
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.
V30"""""
V30"""""
V31 " " " " 330W
V30+ " " " " 350W
POWER
USAGE
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 characteristics 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.
The PWBs used in the V29, V30, V30+ and V31 chassis are constructed using Lead-Free solder.
Pb Solder
CableCARD is a trademark of Cable T elevision Laboratories, Inc.
TV Guide On Screen is a registered trademark of Gemstar Development Corp.
HDMI is a trademark of HDMI Licensing, LLC.
Digital Light Processing, Digital Micromirror Device and DLP are trademarks of Texas Instruments.
When servicing use only recommended Lead-Free solder (refer to page 45).
Page 5
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
SAFETY PRECAUTIONS
NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the
receiver chassis.
WARNING:
1. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard
from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is
not thoroughly familiar with the precautions necessary when working on high voltage equipment.
2. When service is required, observe the original lead dress. Extra precaution should be taken to
assure correct lead dress in the high voltage area. Where a short-circuit has occurred, replace those
components that indicate evidence of overheating.
WARNING ... RISK OF EYE INJUR Y
Do not look into the light source, lens or mirror when operating the TV
Leakage current check
Before returning the receiver to the customer, it is recommended that leakage current be measured according to the
following methods.
1. Cold Check
With the alternating current (AC) plug removed from the AC source, place a jumper across the two AC plug
prongs. Connect one lead of an ohm meter to the AC plug and touch the other lead to each exposed metal part
(i.e. antennas, handle bracket, metal cabinet, screw heads, metal overlay , control shaf ts, etc.), particularly any
exposed metal part that has a return path to the chassis. The resistance of the exposed metal parts having a
return path to the chassis should be a minimum of 1Meg Ohm. Any resistance below this value indicates an
abnormal condition and requires corrective action.
2. Hot Check ...Use the circuit shown below to perform the hot check test.
1. Keep switch S1 open and connect the receiver to the measuring circuit. Immediately after
connection, and with the switching devices of the receiver in their operating positions, measure the
leakage current for both positions of switch S2.
2. Close switch S1, energizing the receiver . Immediately after closing switch S1, and with the
switching devices of the receiver in their operating positions, measure the leakage current for both
positions of switch S2. Repeat the current measurements of items 1 and 2 after the receiver has
reached thermal stabilization. The leakage current must not exceed 0.5 milliampere (mA).
Page 6
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
CABINET FRONT DISASSEMBLY
(WD-52627 / WD-52628 / WD-62627 / WD-62628)
SPEAKER GRILLE & BEZEL Removal
1 ) Pull the SPEAKER-GRILLE away from the cabinet to remove.
2 ) Pull the BEZEL from the cabinet.
SCREEN-ASSY Removal
1 ) Remove 10 screws (a) from the upper cabinet rear cover (3 screws on each side and 4 screws across the
top).
2 ) Remove screws (b) along the bottom of the SCREEN-ASSY (8 screws on 52 inch models, and 10 screws
on 62 inch models),
3 ) Unplug the LL connector to the front CONTROL-P ANEL.
4 ) Lift the SCREEN-ASSY up slightly and then pull away from the cabinet.
CARD READER Removal
1 ) Remove two screws (c) securing the Card
Reader.
2 ) Pull the Card Reader from the cabinet.
3 ) Disconnect the ground lead, USB and 1394
connectors to the Card Reader.
Page 7
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62827 Front Disassembly
FRONT P ANEL CAPS Removal
Pull the FRONT P ANEL CAPS from the unit.
TOP TRIM and FRONT ESCUTCHEON Removal
1 ) Remove screw (a) to remove the TOP
TRIM.
2) Pull off the
FRONT-ESCUTCHEONS.
Page 8
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62827 Front Disassembly (continued)
SIDE-TRIM Removal
1 ) Remove screws (a) and (b) on each
side of the unit.
2 ) Pull off the SIDE-TRIM on each side.
BEZEL and Card Reader/Contol Assy . Removal
1 ) Remove screws (c) to remove the BEZEL.
2 ) Remove screws (d), pull the Card Reader/
Control Assy. out the front of the unit.
3 ) Unplug the LL, CE1, J8202 and 1394
connectors to remove the Assembly completely.
Page 9
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62827 Front Disassembly (continued)
SCREEN ASSY Removal
1 ) Remove screws (e) from the top and sides of the upper rear cover.
2 ) Remove screws (d) from the bottom of the SCREEN ASSY .
3 ) Lift the SCREEN ASSY up slightly and pull away from the cabinet.
Page 10
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62927 Front Disassembly
FRONT ESCUTCHEONS, CARD READER/CONTROL Assy and PEDEST AL COVER Removal
1 ) Pull the Right and Left Front Escutcheons from the cabinet.
2 ) Pull the Pedestal Cover forward to remove.
3 ) Remove screw (a) to remove the Card Reader/Control Assembly from the front.
(T o remove the assembly completely unplug the LL, CE1 J8202 and 1394 connectors.)
Page 11
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62927 Front Disassembly (continued)
TOP, BOTTOM and SIDES TRIM Removal
1 ) Remove screws (b) to remove the T op Trim.
2 ) Remove screws (c) to remove the Bottom Trim.
3 ) Remove screws (d) on both sides to remove the Side Trim
Page 12
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62927 Front Disassembly (continued)
FRONT BEZEL Removal
1) Remove screws (e) from the FRONT-BEZEL.
2 ) Pull the FRONT-BEZEL from the cabinet.
Page 13
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-62927 Front Disassembly (continued)
SCREEN ASSEMBL Y Removal
1 ) Remove screws (f) from the upper rear cover (3 at each side and 4 acrross the ).
2 ) Remove screws (g) at the bottom of the screen.
3 ) Lift the Screen Assembly slighly and pull away from the unit.
Page 14
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-73727 / WD-73827 Front Disassembly
CARD READER REMOV AL
1 ) Pull the two P ANEL-FRONT s from the cabinet.
2 ) Remove screws ((a) from the Card Reader.
3 ) Slide the Card Reader and Control Assembly out the front of the TV .
(T o remove the Card Reader completely unplut the connectore LL, CE1, J8202 and 1394.)
Page 15
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-73727 / WD-73827 Front Disassembly (continued)
GRILLE-SIDE REMOV AL
1 ) Remove screw (b) in the GRILLE-SIDE
LEFT and GRILL-SIDE RIGHT
2 ) Pull the two GRILLE-SIDEs from the unit.
SCREEN-ASSY REMOV AL
1 ) Remove screw (c) along the top and sides
of the upper rear cover. (4 across the top
and 3 on each side).
2 ) Remove two screw (d) on the bottom on the
SCREEN-ASSY.
3 ) Lift the SCREEN-ASY slightly and pull it
away from the TV .
Page 16
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-73927 Front Disassembly
CARD READER REMOV AL
1 ) Pull of the right and left GRILLE-SIDEs.
2) Remove screws (a) to remove the FRONT-BOARDS.
3 ) Remove screws (b) and pull the Card Reader and Control Assembly out the front of the TV .
Page 17
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
WD-73927 Front Disassembly (continued)
SCREEN-ASSY Removal
1 ) Remove screws (f) along the top and sides of the upper rear cover . (4 across the top and 3 on each side).
2 ) Remove two screw (g) on the bottom on the SCREEN-ASSY .
3 ) Lift the SCREEN-ASY slightly and pull it away from the TV.
Page 18
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
Cabinet Rear Disassembly
BACK-COVER Removal
1 ) Remove screws (a) and (b) from the the BACK-COVER.
2 ) Pull the BACK-COVER from the set.
Accessing the MIRROR from the rear (52 and 62 inch models ONL Y)
1 ) Remove screws (c).
2 ) Pull the Rear Mirror Access panel from the unit.
Page 19
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
Chassis Disassembly / Accessing PWBs
Note: Although not individually indicated, unplug the required connectors in each
disassembly step.
Chassis Sequence of Disassembly
REMOVE
Chassis Top Cover
(Fig . 1 )
REMOVE
Assy PWB-TERMINAL
(Fig . 2 )
REMOVE
PWB-POWER
(Fig . 3 )
REMOVE
Chassis Top Shield
(Fig. 3)
REMOVE
PWBs MICRO / FMT/ RISER
(Figs. 4 & 5)
REMOVE
Chassis Rear Shield
(Fig. 6)
REMOVE
PWB-DM
(Fig. 7)
Page 20
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
Chassis Removal from the cabinet
After removing the Rear Cover:
1 ) Remove screw (a), (b) and (c) to remove the
back terminal board cover. (Figure A)
2 ) Remove screw (d) to remove the support bracket
on each side of the chassis. (Figure B)
3 ) Remove the chassis mounting screws (e) on
each side of the chassis. (Figure (C)
4 ) Unplug all connectors to the chassis and
carefully slide the chassis from the cabinet.
Figure A
Page 21
Figure B
Figure C
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
Chassis Cover Removal (Figure 1)
1 ) Remove the 3 screws (a).
2 ) Lift the Cover from the chassis.
Figure 1: Chassis Cover Removal
Assy PWB- TERMINAL Removal (Figure 2)
1 ) Remove 7 screws (b) to remove
the TERMINAL-INLA Y.
2 ) Remove 3 screws (c) to remove
the Assy PWB-TERMINAL.
Figure 2: ASSY PWB-TERMINAL Removal
Page 22
MODELS: WD-52627 / 52628 / 62627 / 62628 / 62827 / 62927 / 73727 / 73827 / 73927
PWB-POWER Removal (Figure 3)
1) Remove four screws (d).
2 ) Disconnect all connectors to PWB-POWER.
3 ) Lift PWB-POWER from the chassis.
Chassis Upper Shield Removal (Figure 3)
1) Remove seven screws (e).
2 ) Lift the Shield from the chassis.
Figure 3: PWB-POWER and Chassis Upper Shield
Page 23
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