Mitsubishi Electric WD-52531 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.
SerSer
SerSer
Servicevice
vicevice
vice
ManualManual
ManualManual
Manual
20062006
20062006
2006
MITSUBISHIELECTRIC
LCDPROJECTIONHDTV
V32/V32L CHASSIS
SPECIFICATIONS
• Power Input : AC 120V, 60Hz
•Power Usage : 225W
• LightEngine : 3 LCD (1280 x 720 pixels)
• Light Source : 132 Watts
•Antenna Input : 2 RF 75Ω unbalanced
• Tuning : 1NTSC/ATSC/QAM
• Cabinet Dimensions :[WD-52531]
33.1"(H) x 47.1"(W) x 16.9"(D)
: [WD-62530]
39.1"(H) x 55.9"(W) x 19.2"(D)
: [WD-62531]
39.1"(H) x 55.9"(W) x 19.2"(D))W
• Weight : [WD-52531]
82.5 lbs
: [WD-62530] [WD-62531]
99.3 lbs
•Speakers (4Ohms 10W)
: 2-5 ½ x 2 ¼ inch
• 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 : AC-3 Digital Audio Output
(RCAType)
: HDMITM
: Lead-Free solder PWBs
.
WD-52327
V32 Chassis
WD-52531
WD-62531
Pb Solder
Pb Solder
WD-52531
V32L Chassis
WD-62530
All manuals and user guides at all-guides.com
all-guides.com

All manuals and user guides at all-guides.com

Page 3
MODEL: WD-52531 / WD-62531 / WD-62530
INTRODUCTION ................................................................................................................................5
Dimensions,weight, powerusage, etc............................................................................................5
PRODUCTSAFETY NOTICE ............................................................................................................. 5
SAFETY PRECAUTIONS .................................................................................................................6
DISASSEMBLY ..................................................................................................................................7
RearCoverRemoval ........................................................................................................................7
ChassisRemovaland Disassembly ................................................................................................7
LCDEngineRemoval .................................................................................................................... 10
FrontDisassembly........................................................................................................................ 13
LenticularScreenand Fresnel LensRemovaland Replacement.................................................... 14
ADJUSTMENTS ...............................................................................................................................15
OptionMenu & RemoteControl ....................................................................................................15
DigitalSignal Strength................................................................................................................... 15
FrontPanel Initialization................................................................................................................ 16
Defaults ........................................................................................................................................ 17
A/VDefaults ................................................................................................................................. 18
LEDIndicator Diagnostics............................................................................................................. 18
ErrorCodesOperationalCheck..................................................................................................... 19
ErrorCodes List................................................................................................................... 19
Lamp Troubleshooting ................................................................................................................... 20
LampControldiagram.......................................................................................................... 21
LampTroubleshootingFlowChart ........................................................................................ 21
ServiceAdjustmentMode ............................................................................................................. 22
ServiceAdjustment Mode Operation .................................................................................... 23
Transferringdata .................................................................................................................. 23
OpticalEngineAdjustment............................................................................................................ 23
TestSignal activation ........................................................................................................... 23
Preliminary .......................................................................................................................... 23
Rotationand KeystoneDistortionAdjustment ............................................................................... 24
Aftercompleting Light EngineAdjustments .......................................................................... 24
Horizontal & Vertical Position............................................................................................... 25
USINGLEAD FREE SOLDER .......................................................................................................... 26
CHIPPARTSREPLACEMENT ......................................................................................................... 27
REPLACEMENTPARTS .................................................................................................................. 28
PartsOrdering .............................................................................................................................. 28
Criticaland WarrantyParts Designation........................................................................................28
PartsToleranceCodes.................................................................................................................. 28
QuickReference List ........................................................................................................................ 29
SERVICE PARTS LIST .................................................................................................................... 30
SCREENASSEMBLY PARTSLIST.................................................................................................. 37
CIRCUITRYBLOCK DIAGRAMS ..................................................................................................... 38
MainPower Supply ....................................................................................................................... 38
LCDLight Engine& FanPower Supplies ...................................................................................... 39
DCto DC Supplies........................................................................................................................ 39
AnalogVideo SignalPath ............................................................................................................. 40
CONTENTS
All manuals and user guides at all-guides.com

Page 4
MODEL: WD-52531 / WD-62531 / WD-62530
Digital Video Signal Path .............................................................................................................. 41
SoundSignal Path ........................................................................................................................ 42
OverallControlCircuitry ................................................................................................................ 43
CommandInputCircuitry............................................................................................................... 44
LampControlCircuitry .................................................................................................................. 44
LCDEngine ProtectCircuitry ........................................................................................................ 45
Short Protect Circuit ..................................................................................................................... 45
AutoInput Detection ..................................................................................................................... 46
SCHEMATICDIAGRAMS .....................................................................................................................
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.
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 5
INTRODUCTION
Thisservice manual provides service instructions for LCD ProjectionTV Models WD-52531 and WD-62531 using the
V32 chassis, and WD-62530 using the V32L chassis.
Thisservice manualincludes:
1. Assembly and disassembly instructions for the front and rear cabinet components.
2. Servicingof the Lenticular Screenand FresnelLens.
3. Servicing down to major components, chassis, PWBs, Light Engine, Lamp Ballast, etc..
4. Electrical adjustments.
5. OpticalAdjustments.
6. LeadFree Soldering.
7. Chippartsreplacement procedures.
8. Simplified circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinetand 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
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 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.
Pb Solder
The PWBs used in the V32 chassis are constructed using Lead-Free solder. When servicing use
only recommended Lead-Free solder (refer to page 26).
All manuals and user guides at all-guides.com

Page 6
MODEL: WD-52531 / WD-62531 / WD-62530
SAFETY PRECAUTIONS
NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the
receiverchassis.
WARNING:
1. Operationof this receiver outside the cabinetor withthe coverremoved presentsa shockhazard
fromthe receiver's power supplies. Work onthe receiver should not beattempted by anyone who is
notthoroughly familiar withthe precautionsnecessary when workingon highvoltage equipment.
2. Whenservice is required,observe theoriginal leaddress. Extraprecaution shouldbe taken to
assure correct lead dress in the high voltage area. Where a short-circuit has occurred, replace those
componentsthatindicateevidence of overheating.
Leakage current check
Before returning the receiver to the customer, it is recommended that leakage current be measured according to the
followingmethods.
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 shafts, 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
abnormalconditionand requires correctiveaction.
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 devicesof thereceiver intheir operatingpositions, measurethe leakagecurrent 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).
WARNING ... RISK OF EYE INJURY
Do not look into the light source, lens or mirror when operating the TV
All manuals and user guides at all-guides.com
all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 7
BACK-COVER Removal
1) Remove2 screws (A) to removethe LampCover
2) Remove12 screws (B).
3) Pull the COVER-BACK from the cabinet.
NOTE: To operate theTV the Lamp Cover must be reinstalled after the back cover is removed.
Chassis Removal
1) Remove2 screws (C).
2) Disconnect all cables connected to the
chassis.
3) Carefully slide the chassis from the
cabinet
C
C
All manuals and user guides at all-guides.com

Page 8
MODEL: WD-52531 / WD-62531 / WD-62530
Rear Plate & PWB-INTERFACE Removal
1) Remove4 screws(a) and pulloff the rear plate.
2) Remove3 screws (b) to removethe PWB-INTERFACE
PWB-POWER & Power Bracket
Removal
1) Remove 4 screws (A) and lift PWB-
POWER from the chassis.
2) Remove8 screws(B) toremove the
PowerBracket.
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 9
PWB-SIGNAL Removal
1) Remove6 screws(c).
2) Unplugall connecting cables.
3) RemovePWB-SIGNAL
Exhaust Fan Replacement
1) Remove7 screws(A) to
removethe lampduct rear
cover.
2) Slide the Exhaust Fan from
the duct and unplug the JF
connector. Removethe
rubberfan holders, they do
not come with the replace-
mentfan.
3) Wheninstalling the fan
insert the fan in the re-
movedcoverfirst.
4) Insure the leads come out
the bottom of the fan and
the label on the fan is
facingupwards.
PWB-DM Removal
1) Remove 6 screws (D).
2) Unplug all connecting cables.
3) Lift PWB-DM from the chassis.
If PWB-DM is replaced, see page 22 to
perform "Copy Light Engine E2PROM to DM"
If PWB-SIGNAL is replaced, see page 22 to
perform "Download WB Data to FMT"
AAA
A
A
A
A
All manuals and user guides at all-guides.com

Page 10
MODEL: WD-52531 / WD-62531 / WD-62530
Light Engine Replacement
Light Engine and Associated Components
The picture below shows the LCD Engine without added components, and the bottom picture shows the added
components and the Engine mounted on the Engine Plate.
LCD panel
area.
Two induction
fans.
Side hole for
lamp cooling.
Polarized
Beam
Splitter
Induction
cover
LCD Engine
LCD Engine on engine plate
Engine
Plate
PWB-MTR-DRIVE
(Relay Board)
Note: The Engine has no individual
service parts available. Attempting
to disassemble the Engine may void
the warranty.
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 11
Light Engine & Engine Plate removal from the Cabinet
Preliminary
Refertothe chassis removalprocedure and removethe BACK-COVER.
Removal Procedure
1) Remove the 2 locking screwss (A).
2) Loosenone (B) adjustment screw.
(With only one (B) screw loose less
adjustmentis requiredwhen
installing a new Engine.)
3) Partially slide the Engine and
bottom plate out of the cabinet.
4) Loosenscrew (C)and unplug the
DVI cable from the Engine.
5) Disconnect all leads to the Engine,
Lamp Box and Ballast.
6) Carefullyslide theEngine and
bottom plate from the cabinet.
(c)
(D)
Light Engine removal from the
Bottom Plate
1) Remove2 screws (D) secure the support plate
to the Engine.
All manuals and user guides at all-guides.com
all-guides.com

Page 12
MODEL: WD-52531 / WD-62531 / WD-62530
2) Toremove theEngine from
thebottom plate, remove3
screws (a), and carefully lift
the Engine from the bottom
plate.
3) Toremove theCOVER-
INDUCTIONfromtheEngine
5 screws (b).
Light Engine removal from the Bottom Plate (continued)
Light Engine Inst
CABLE
CLAMP
allation
1) Reverse the removal procedure to
install a new light engine.
2) Tighten the DVI cable screw to 2-4 kgfcm.
3) Route the DVI cable and the KA-CN201
leads through the cable clamp as shown on
the right.
If Light Engine is replaced, see page 22 to perform
"Copy Light Engine E2PROM to DM"
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 13
Front Disassembly
Screen Frame Removal
1) Pull off the Speaker Grill.
2) Remove all screws (B) from the upper rear cover (except one screw at a upper corner). The remaining screw
supportsthe screen frame while removing the front screws.
3) Removeall screws (A) from the front of the screen frame.
4) Carefully pull the Screen Frame from the TV and disconnect the ES and LE connectors.
All manuals and user guides at all-guides.com

Page 14
MODEL: WD-52531 / WD-62531 / WD-62530
Screen Replacement
CAUTION: Wear gloves when handling the LenticularScreen and Fresnel Lens.
This prevents cuts and finger prints. Do not place Fresnel Lens in the sun.
Thismay cause fire and heat related injuries.
Lenticular Screen and
Fresnel Lens Replacement
1) Apply LENS-TAPE along the rear top edge of the Lenticular Screen.
2) Place the Fresnel Lens on top of the Lenticular Screen, and apply pressure along the top edge.
3) Place the screens in the screen frame and reinstall the cushions, top, bottom and side rails.
NOTE:The Lenticular Screen label must face the front
and the Fresnel Lens label face the rear.
4) Reversethe Screen RemovalProcedure andinsert the
screens in the Bezel.
Lenticular Screen and Fresnel Lens Removal
1) Remove28 screws (A) to remove the top, bottom and side HOLDER-SCREEN rails and theirSPACERS from
the Screen Frame. (36 screws in the 62” model)
2) Lift the screens as a single
unitfrom the frame.
3) Separatethe LenticularScreen
andFresnel Lens.
Note: When separating the Lenticular
Screenfrom the FresnelLens, usecaution
while prying the Screen and Lens apart.
Use a slot type screw driver, and
removethepressure sensitive doublesided
tape.
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 15
OPTION MENU
1. Press the MENU button on the remote hand unit.
2. Press the buttons 2, 4, 7 and 0 in order.
(The screen will change to the option menu.)
V32/V32L REMOTE CONTROL
SNR Recommended Levels:
VSB = 15 to 35
64 QAM = 22 to 34
256 QAM = 27 to 37
Digital Signal Strength
1. Tune to a Digital Channel
2. From the Option menu scroll down and highlight Digital
Signal Strength
3. Press Enter
Example using on ANT1
Signal Quality
Index (0-100)
Signal Noise
Ratio
Tuner 0 Tuner 1 OOB Tuner
Frequency(MHz): 597 0
Signal Level: 8 0
Modulation: 256 QAM Unknown
Carrier Lock: Locked Unknown
SQI: 100 0
SNR: 34.3 0
Correctable errors: 0 0
UnCorrectable errors: 0 0
Previous Model Name
New Name
HOME EXIT
PIP/POP SPLIT
SQV FAV
DEVICE INPUT
V32/v32L Remote Button Name Changes
All manuals and user guides at all-guides.com

Page 16
MODEL: WD-52531 / WD-62531 / WD-62530
RESET / INITIALIZE GUIDE
Reset Name When to use How to use Resulting Action
Remote Control TV
Layer Reset Returns the remote control TV layer to normal operation. (1) (2)
(3)
(3)
Set the slide switch to TV position.
Press and hold the POWER button until it
flashes twice then release the button.
Enter the code 0 0 9 3 5.
Once the valid code has been entered
and confirmed, the remote control has
been reset.
Remote Control TV
Volume/Mute
functions
Returns the volume and mute
functions of the remote control to
TV volume and mute for TV,
Cable/Sat, VCR and DVD layers
after the audio lock for AV
Receivers feature has been used.
(1)
(2)
(3)
(3)
Set the slide switch to TV position.
Press and hold the POWER button until it
flashes twice then release the button.
Enter the code 9 9 3 VOL UP.
The remote will now operate the TV's
volume and mute when the slide switch
is in the TV, CABLE/SAT, VCR or DVD
positions.
A
/V Memor
y
Reset,
single input When the audio and or video settings for a single input seems
to incorrect
MENU --> Audio/Video--> AV Reset All Audio and Video settings for the
individual input are reset except for the
Listen To and Language, audio
Balance and Closed Caption settings.
A/V Reset, all
inputs To reset audio and video adjustments for all inputs to the
original factory settings.
While viewing the TV, press the front panel
buttons GUIDE and FORMAT at the same
time.
All Audio and Video settings including
Listen To and Language, Closed
Captions settings and Format settings
are returned to the original factory
settings.
System Reset To reset the TV when it does not
turn on or off, does not respond
to the remote control, front panel
buttons or has audio but no
video.
Press the SYSTEM RESET button on the
front panel with a pointed object such as
the point of pencil or end tip of a paperclip.
The changes you made most recently,
before using the SYSTEM RESET, may
be lost. Changes you made previously,
however, are not lost.
TV Reset To reset all customer settings Press MENU-1-2-3-ENTER All customer settings except V-Chip are
reset.
Initialize - User
Level To reset all consumer adjusted settings and memories to the
original factory defaults.
Press FORMAT and INPUT buttons on the
front control panel at the same time. All memories and settings outlined in
the Owner's Guide will need to be set
again.
Initialize - Service
Level To reset all consumer adjusted settings and memories to the
original factory defaults.
MENU + 2470. Highlight INITIALIZE and
press ENTER All memories and settings outlined in
the Owner's Guide will need to be set
again. Also erases V-CHIP password
Factory Restore To recover from data/adjustment
errors in the ISF menu MENU + 2457 + 0. Highlight RESTORE
FACTORY DEFAULTS and press ENTER All service, user, ISF data is set back to
factory defaults.
NOTE: DuringInitialization, the set will
reboot. Waituntil the PowerLED stops
flashingbefore unplugging orpowering
ON theTV.
Front Panel Initialization
While the unit is ON, pressing the FORMAT and INPUTbuttons simultaneously will immediately start the Initialization
sequence. TheTV will reboot once the initialization sequence is completed. Front Panel Initialization will resetALL
user settings to the factory setting.
SERVICE TIP:
Many customer generated symptoms, intermittent symptoms or no symptom found can be resolved by system reset
or initialization. Before visiting the customer’s home ask the customer 1st to try the System Reset button on the
control panel and if this does not resolve the issue, then they can use the front panel initialization by pressing the
FORMATand INPUT buttonssimultaneously
All manuals and user guides at all-guides.com
all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 17
TV Rating :TV-PG
Language :English FV-Fantasy/Violence --
Memorize Channels -- D-Sexual Dialog --
Ant1 Air -- L-Adult Language --
Ant1 Cable -- S-Sexual Situations --
Ant2 Air -- V-Violence --
Ant2 Cable -- Programs not rated --
Clock Movie Rating PG
Clock Setting Manual V-Chip Time
Time 12:00pm Start :12:00pm
Date 1/01/04 Stop :12:00pm
Time Zone :Eastern Lock by Time :Of
f
Daylight Savings :Applies Lock Time :12:00pm
Timer :Gray Out Unlock Time :12:00pm
Timer :Off From Button Lock :Of
f
Day :Everyday
Time :12:00pm A/V Memory Reset :Ant1
Device :Ant1 Audio/Video
Channel :2 Bass :50%
Software Version V32 xxx.xx Treble :50%
Balance :50%
Record Surround :Off
Channel :2 Listen To :Stereo
Record to -- Level Sound :Off
Duration :1 hr Language (Digital Signal Only) :English
Start Time --
V
ideo
Day -- Picture Mode :Brillant
Record List -- Bright/Natural :Bright
Default Record Device :Gray out Brillant Contrast :100%
Analog Recordings :Anamorphic Brillant Brightness :50%
Color :50%
Antenna :1 Tint :50%
Prefer Digital Sharpness :50%
Channel :2 Brillant Color Temp :High
Memory :Added Color :Manual Center
Name Video Noise :Standard
FAV
V
ideo Mute :On
Signal Strength :Digital only TV Speakers :On
TV Volume :30%
Analog Captions :On if Mute PIP Source Ant1 002
Background :Gray PIP Position :Lower Right
Digital Captions :On if Mute POP Position :Right Hal
f
Appearance :Default PIP/POP Format Double Window
Digital Settings
Font :Font 3 Ant 1 or 2 480i/480p :Stretch
Size :Large Ant 1 or 2 HD Digital :Standard
Color :White Input 1, 2, 3 :Standard
Background :Black Comp 1, 2 :Standard
Opacity :Translucent HDMI 1, 2 (Only HDMI 1 in V32L) :Standard
Backgroung Opacitry :Translucent Input 1, 2, 3 :On
V
-Chip Componet 1, 2 :On
US Ratings :Off
DEFAULTS AFTER INITIALIZATION
Parental Lock
Setup Menu
Auto Input Detect
Record
Audio/Video
Channel
Captions Menu
Format
All manuals and user guides at all-guides.com

Page 18
MODEL: WD-52531 / WD-62531 / WD-62530
A. A/V Memory
Each of the external inputs has its’ ownAudio/Video Memory. Achange in an A/V setting at a specific input is
stored in memory for that specific input.
B. A/V Reset
1. The front panelAV Reset (pressing the “Guide” and “Format” buttons at the same time) initializes allA/V
Memories.
2. The AV Reset in the user’s menu initializes only the selected input’sA/V Memory.
LED Indicator Diagnostics
Thefront panelLEDs provide an indication of the sets operation,and thepossible cause of a malfunction. There
are three front panel LEDs, “Power”, “Status” and “Lamp”. Which LED is lit, the color and whether it is blinking or
steady indicate the current status, or a possible malfunction.
POWER
LED STATUS LED LAMP LED Power Status Condition
Off Off Off Stby Off
Green Off Off P-0N Power On
Off Off Blinks
Green
A
fter Turn
Off Lamp Fan On for 1 minute
Blinks
Green Off Off Stby Booting after AC applied
Slow Blinks
Green Off Off Stby On Timer is set
Normal LED Indications
AV RESET DEFAULTS
A/V Memory Antenna 1&2 Input 1/2/3 Component
1/2 HDMI 1/*2
Brillant/Bright/Natural Bright Bright Bright Bright
Bright Contrast Maximum Maximum Maximum Maximum
Bright Brightness Center Center Center Center
Color Center Center Center Center
Tint Center Center Center Center
Sharpness Center Center Center Center
Color Temp. High High High High
Perfect Color Manual Center Manual Center Manual Center Manual Center
V
ideo Noise Standard Standard Standard N/A
Bass Center Center Center Center
Treble Center Center Center Center
Balance Center Center Center Center
Surround Off Off Off Off
Listen To Stereo N/A N/A N/A
Level Sound On On N/A N/A
Language** English N/A N/A N/A
* HDMI 2 in V32 only.
All manuals and user guides at all-guides.com

MODEL: WD-52531 / WD-62531 / WD-62530
Page 19
3. Error Code Operational Check
Note: TheTV must be in “ShutDown” andnot have been switched Off,to performthe ErrorCode Opera-
tionalCheck. When the TV is switched Off, the code automatically resets to “12” No Error.
Pressing the front panel “DEVICE” and “MENU” buttons at the same time, and holding for 5 seconds,
activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem
has occurred since the last Initialization.
Note: The front panel buttons must be used, NOTthose on the Remote Control.
•Thenumber offlashes indicatesthe valueof the MSD (tens digit) of the Error Code.
•Theflashing then pauses for approximately1/2 second.
•TheLED thenflashes indicatingthe valueof theLSD (ones digit) of the Error Code.
•The Error Code is repeated a total of 5 times.
Example: If the Error Code is “23”, the LED will flash two times, pause, and then flash three times.
4. Error Codes
TheError Code designations indicating malfunction, or no malfunction, are listed below:
Lamp Troubleshooting
UsetheaboveErrorCodeTable,and the Lamp ControlBlockdiagramandTroubleshootingflowcharton the following pages
to determine the cause of a lamp problem.
Code Description
12 No Error found
32 Lamp cover is open.
34 Lamp turns Off while the TV is playing.
36 Lamp ballast fan failed.
37 Red/Green LCD-PBS fan failed.
38 Lamp temperature abnormally high.
39 LCD Intake temperature abnormally high.
41 Standby Short Detected.
42 Exhaust (lamp) fan failed.
44 Check for disconnected DVI cable between PWB-DM and Engine.
45 BLUE LCD fan failed.
46 LCD Intake Temperature sensor not detected.
48 Engine power supply short is detected. (P-ON short)
66 Lamp did not turn on at P-ON sequence
ERROR CODES
Power/Timer
Indicator Status Indicator Lamp Indicator Condition
Temperature high – room temperature too hot.
Temperature sensor is disconnected.
Off Off Yellow Lamp usage warning (over 5000 hours)
Off Off Blinking yellow Lamp cover is open.
Off Red Lamp fails to turn on
Off Blinking Red Off Fan Stop
Circuit failure (short)
Off Red. Off DVI cable between DM and Engine disconnected
Ballast problem detected by ballast UART (temperature,
short circuit, did not ignite, low voltage)
ABNORMAL LED INDICATIONS
Off Yellow Off
All manuals and user guides at all-guides.com

Page 20
MODEL: WD-52531 / WD-62531 / WD-62530
Lamp Control
Block Diagram
Lamp Troubleshooting
Flow Chart
• Install Lamp Cover with no Lamp
• Monitor Ballast spark gap.
• Press "POWER'
• Spark gap arc?
Press
"POWER"
KA Connector
(1~4)=3.3V?
(7~8)=18V?
Ballast
DC Supply?
Replace
Lamp
• H for 5 sec.
• L for 10 sec.
• H for 1 sec>
• Stays Low
PL (1 to 5)=340V
FB pin 3=5vs Replace Ballast
• H for 4 sec.
• L for 10 sec.
• Repeats
several times
Replace
Lamp
Install Lamp
& Lamp Cover
Check
Ballast
Striking
Replace
Lamp
Check
LAMP-EN
(FC pin 23)
Yes
No
Yes Pulses
No
No Pulse
Pulses
Yes
Yes
Check
Engine
Power
Check
PWB-SIGNAL
OK
Lamp Lights
then goes out
Lamp does
not Light
Check Cable
Connections
DVI, FC &
CN101
Circuit
Problem
OK
OK
PB Connector
(1~2)=18V?
Replace
PWB-POWER
No
Check
PWBs Signal & Interface
Yes
Code 34
Code 34
Code 66
Code 66
Code 66
Code 66 Code
66
Code
66
Code 34
Code 34
All manuals and user guides at all-guides.com