Service 2009 - JustAnswerww2.justanswer.com/uploads/teccar/2012-06-23_120817_mitsu_ln52249.pdf ·...

• Design specifications are subject to change without notice.

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.9351 Jeronimo Road, Irvine, CA 92618-1904

Copyright © 2009 Mitsubishi Digital Electronics America, Inc.All Rights Reserved

CAUTION:Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and"PRODUCT SAFETY NOTICE" contained in this manual.

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20092009200920092009

MITSUBISHI ELECTRIC

LCD FLAT PANEL TELEVISIONVLP41 / VLP41+ / VLP41++ CHASSIS

• Analog Output : AUDIO / SUBWOOFER OUT JACK Level (RCA Type)

-4.7dBm 4.7kΩ unbalanced

• Analog Input : VIDEO IN JACK (RCA Type) Level Y - 1.0Vp-p, Cr, Cb - 700mVp-p

75Ω unbalanced

• Digital : HDMITM 1.3 Inputs Inputs/Outputs 480i, 480p, 720p, 1080i (60Hz)

1080p(24Hz, 30Hz, 60Hz)

: Digital Audio Input (AC-3, PCM): Digital Audio Output (AC-3, PCM): USB Input: Direct IR Input/NetCommand Ouput

(V41+, V41++): RS-232c (V41++): Ethernet Wired Internet Connector

(V41++)

• HDMITM Digital PC Compatibilty: 640 x 480, 898 x 480, 800 x 600,

1064 x 600, 1024 x768, 1280 x 720,1365 x 768, 1280 x 1034 @ 60Hz,1920 x 1080 @ 24Hz, 30Hz, 60Hz

VLP41 ChassisLT-40151LT-46151LT-52151

Pb Solder

VLP41++ ChassisLT-46249LT-52249

SPECIFICATIONS• Power Input : AC 120V, 60Hz

• Power Usage : See table on page 5

• Dimensions : See table on page 5& Weight

• LCD Panel : Resolution - 1920 x 1080: Refresh Rate - 120 Hz

• Tuning : Digital/Analog Tuner (NTSC/ATSC/QAM)

• Tuning Range : Analog Cable - 1~125 Digital Cable - 1~135

• Antenna Input : 1 RF 75 Ohms unbalanced

• Speakers : 2W x 16 (V41/V41+): 2W x 16 & 20W x 2 (V41++)

VLP41+ ChassisLT-40153LT-46153LT-52153

Lead-Free solder PWBs

LT-52249

• HDMI™ is a trademark of HDMI Licensing, LLC• Dolby and Dolby Digital are registered trademarks of Dolby Laboratories.

MODELS: LT-40151 / LT-46151 / LT-52151 / LT-40153 / LT-46153 / LT-52153 / LT-46249 / LT-52249

INTRODUCTION ................................................................................................................................ 5Dimensions, Weight, etc. ............................................................................................................... 5

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

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

DISASSEMBLY & PARTS REPLACEMENT ....................................................................................... 7LCD Panel Replacement ................................................................................................................. 7Back Cover Removal ....................................................................................................................... 7LCD Stand Removal ........................................................................................................................ 7Speaker Cabinet Removal & Disassembly ....................................................................................... 8Bezel Removal & Replacement ....................................................................................................... 9Wall Mount Brackets Removal ...................................................................................................... 10Stand Mounting Bracket Removal ................................................................................................. 10Side Terminal Removal & Disassembly ......................................................................................... 10NET/ML Assembly Removal .......................................................................................................... 11PWB-ML/POWER Replacment ..................................................................................................... 11PWB-NET/ML Replacment ........................................................................................................... 12Power Assembly Removal ............................................................................................................. 12PWB-POWER Replacment........................................................................................................... 12Main Assembly Removal ............................................................................................................... 13PWB-MAIN Replacment ............................................................................................................... 13Top, Bottom & Side Brackets Removal ......................................................................................... 14Top Stay Removal ......................................................................................................................... 14LCD Panel Replacement Final Steps - Wiring and Wiring Clamps ................................................. 15

INITIALIZATION, INITIAL SETTINGS & TROUBLESHOOTING ....................................................... 19Remote Control ............................................................................................................................. 19Option Menu ................................................................................................................................. 20Reset and Initialization .................................................................................................................. 20Initial Settings ............................................................................................................................... 21A/V Reset ..................................................................................................................................... 22Backup / Restore ISF Settings ..................................................................................................... 23LED Indications & Self Diagnostics ............................................................................................... 24Error Codes .................................................................................................................................. 25Error Code Log.............................................................................................................................. 25Soun Projector Transducer Test .................................................................................................... 25

USING LEAD FREE SOLDER .......................................................................................................... 26

CHIP PARTS REPLACEMENT ......................................................................................................... 27

REPLACEMENT PARTS .................................................................................................................. 28Parts Ordering .............................................................................................................................. 28Critical and Warranty Parts Designation........................................................................................ 28Parts Tolerance Codes .................................................................................................................. 28

Quick Reference List ...................................................................................................................... 29

SERVICE PARTS LIST .................................................................................................................... 30

CONTENTS


CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 37Power Supply Overview ................................................................................................................. 375VSL Source ................................................................................................................................ 385VSL Distribution .......................................................................................................................... 39+340V Source ............................................................................................................................... 40PWB-ML-POWER ........................................................................................................................ 41OVINV, 12VS & PANEL-VCC Sources .......................................................................................... 4212VS Distribution (1/2) .................................................................................................................. 4312VS Distribution (2/2) .................................................................................................................. 44Signal Path ................................................................................................................................... 45System Control ............................................................................................................................. 46

SCHEMATIC DIAGRAMS


INTRODUCTION

This service manual provides service instructions for LCD Flat Panel TV Models and Chassis:

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 byusing 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 parts list of thisservice manual. Therefore, the replacement for any safety part should be identical in value and characteris-tics.

Pb SolderThe PWBs used in thischassis are constructed using Lead-Free solder. When servicing useonly recommended Lead-Free solder.

NORMAL STANDBYLT-40151 VLP41 25.1" 26.4" 36.7" 2.9" 12.9" 52.9 lbs 230W 0.4WLT-40153 VLP41+ " " " " " " " "LT-46151 VLP41 28.1" 29.4" 42" " " 62.4 lbs 280W "LT-46153 VLP41+ " " " " " " " "LT-46249 VLP41++ " " " 3" " " " "LT-52151 VLP41 31.5" 32.8" 47.7 3.5" " 80.9 lbs 295W "LT-52153 VLP41+ " " " " " " " "LT-52249 VLP41++ " " " 3.6" " " " "

Dimensions, Weight & Power Consumption

MODEL CHASSIS HEIGHT HEIGHT w base WIDTH DEPTH DEPTH

w baseWEIGHT w base

POWER USAGE


Leakage current checkBefore returning the receiver to the customer, it is recommended that leakage current be measured according to thefollowing methods.

1. Cold CheckWith the alternating current (AC) plug removed from the AC source, place a jumper across the two AC plugprongs. 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 anyexposed metal part that has a return path to the chassis. The resistance of the exposed metal parts having areturn path to the chassis should be a minimum of 1Meg Ohm. Any resistance below this value indicates anabnormal 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).

SAFETY PRECAUTIONSNOTICE: 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 thoroughlyfamiliar with the precautions necessary when working on high voltage equipment.

2. Do not install, remove or handle the LCD panel in any manner unless shatterproof goggles are worn. Peoplenot so equipped should be kept away while the panel is being handled. Keep the panel away from the bodywhile handling.

3. When service is required, observe the original lead dress. Where a short-circuit has occurred, replace thosecomponents that indicate evidence of overheating.

4. If the LCD Panel is damaged, crystalline liquid may leak from the LCD panel and broken glass may bescattered. The crystalline liquid is toxic. Avoid contact with your skin, eyes, or mouth. DO NOT touch thebroken glass or crystalline liquid with bare hands, as cuts, poisoning, and/or skin irritation may occur. DONOT let glass fragments or crystalline liquid get into your eyes or mouth. Should either contact your eyes ormouth, rinse the contacted area thoroughly with water and consult your doctor.

5. The fluorescent tubes in the panel contain mercury that is toxic and if broken should not be touched.6. DO NOT dispose of the TV with general household waste. Follow local laws and regulations for legal and

safe disposal of the TV. For disposal or recycling information, contact local authorities or the ElectronicIndustries Alliance at www.eiae.org.

GWG - Green Wire Ground(Earth Ground)

S2

S1

OPENGROUND

SUPPLY CONNECTOR GROUND

RECEIVER

INSULATED TABLE

TOUCH ALLEXPOSED

METAL PARTS

AC MAMETER

L

N


Back Cover Removal**NOTE: It is not necessary to remove the Stand for Back Cover removal.1) Remove short screws (A) and long screws (B).2) Lft the back cover from the TV.

DISASSEMBLY

Stand Removal**NOTE: The Stand can be removed either before orafter Back Cover removal.1) Lay the TV face down on a soft flat surface.2) Remove screws (C) and lift out.

NOTE: Unless noted, instructions are for all models.Illustrations may differ slightly depending upon the actual model being serviced.

LCD Panel Replacement1) Remove the parts noted with **.2) Reverse the procedure to install a replacement.

A

A

A

B

B

B

C

DISASSEMBLY & PARTS REPLACEMENT


Speaker Cabinet Removal**1) Disconnect all electrical connectors to the Speaker Cabinet.2) Remove screws (A).3) Lift the Speaker Cabinet from the TV.

Screen Size Screw Quantity52" 1046" 840" 6

Speaker Cabinet Disassembly (LT-40151, LT-46151, LT-52151, LT-46153 & LT-52153)1) GRILL-REAR - Remove screws (B).2) Preamp Assembly - Remove screw (C).3) LED Assembly - Remove screw (D).4) PLATE-LED - Remove screws (E).

DISASSEMBLY & PARTS REPLACEMENT(CONTINUED)

B

ORNAMENT

B

ENET-SP

GRILL-REARPWB-PREAMP

PLATE-IR

C

LENS-IR

PLATE-LED

D

PWB-LED

COVER-LED

GRILL-SP

SPEAKER-2WPAD-SP

SPEAKERAA

46" 40"52" A

A46"

52"CABINET

40"


Speaker Cabinet Disassembly (LT-46249 & LT-52249)1) GRILL-REAR - Remove screws (B).2) Preamp Assembly - Remove screw (C).3) LED Assembly - Remove screw (D).4) SPEAKER(S) - Remove screws (E).


B

ORNAMENT-SP

PWB-PREAMP

LENSIR

PLATEIR

B

C

D

SPEAKER

GRILL-SP

GRILL-REAR

NET-SP

SPEAKER-2WPAD-SP

LENS-LED

PWB-SBL

PLATE-LED

PWB-LED

E

HOLDER-SP

BEZEL-FRONT Removal**1) Remove the Speaker Cabinet.2) Release the clips arond the sides and top of the Bezel and lift away from the front of the LCD Panel .

BEZEL-FRONT Replacement (LT-40153, LT-46153, LT-52153, LT46249, LT-52249)1) Apply double faced adhesive tape along the inside top, bottom and sides of the Panel-Front.2) Use even pressure to mate the Panel-Front to the Bezel.

DF-ADHESIVE-TAPE

PANEL-FRONT


Wall Mount Brackets Removal**1) Remove screws (A).2) Lift off the Wall Mount Brackets.

Stand Mounting Bracket Removal**1) Remove screws (D).2) Lift off the Stand Mounting Bracket.


AC Power Jack Removal**1) Remove screws (B) and (C).2) Disconnect electrical connector.3) Lift off the AC POWER JACK.

Side Terminal Removal**1) Disconnect all electrical connectors to the Side Terminal.2) Slide the Side Terminal out of the TV.

Side Terminal Disassembly1) HDMI Cable - Remove screws (E).2) PWB-SIDE & BUTTON-SIDE - Remove screws (F).

A A WALL MOUNTBRACKETS

A STAND

BRACKETMOUNTING

D

BC AC POWERJACK

E

USB CABLEPWB-SIDE BUTTON-SIDE

SIDE TERMINAL

F


NET/ML Assembly Removal** (LT-46249 & LT-52249 Only)1) Disconnect all electrical connectors from PWB-NET/ML and PWB-ML-POWER.2) Remove screws (A).3) Lift Net/ML Assembly up and off.

PWB-ML-POWER Replacement (LT-46249 & LT-52249 Only)NOTE: Removal of the NET/ML-Assembly is not required for PWB-ML-POWER replacement.1) Disconnect all electrical connectors from PWB-ML-POWER.2) Remove screws (B).3) Lift away the PWB-ML-POWER.4) Reverse the procedure for installation.


A

A

NET/MLASSEMBLY

PWB-NET/MLPWB-ML-POWER

B

PWB-ML-POWER


PWB-NET/ML Replacement (LT-46249 & LT-52249 Only)1) Remove the NET/ML- ASSEMBLY..2) From the reverse side, remove screws (C).3) Lift away the PWB-NET/ML.4) Reverse the procedure for installation.

Power Assembly Removal**1) Remove the NET/ML-ASSEMBLY. (LT-46249 & LT-52249 Only).2) Disconnect all electrical connectors from PWB-POWER.3) Remove screws (A).4) Lift off the Power Assembly.

PWB-POWER ReplacementNOTE: Removal of the POWER-ASSEMBLY is not required for PWB-POWER replacement.1) Disconnect all electrical connectors from PWB-POWER.2) Remove screws (B).3) Lift off the PWB-POWER.4) Reverse the procedure for installation.


C

PWB-NET/ML

A

A

POWERASSEMBLY

PWB-POWER

B


Main Assembly Removal** /PWB-MAIN ReplacementNote: The PWB-MAIN is replaced as an assembly that includes the shield.1) Remove the NET/ML-Assembly. (LT-46249 & LT-52249 Only).2) Disconnect all electrical connectors from PWB-MAIN.3) Remove screws (A).4) Lift off the Main Assembly.5) To install a replacement PWB-MAIN, reverse the procedure


A

A

MAIN-ASSEMBLY

PWB-MAIN



Top, Bottom & Side Brackets Removal**Top Stay Removal** (52” Models)

1) 40” and 46” models - Remove screws (A) & (B).52” models - Remove screws (A) (B) & (C).

A40" & 46" MODELS

BRACKET-SIDE BRACKET-SIDEBRACKET-TOP

BRACKET-BOTTOM

AA

A

B

C52" MODELS

BRACKET-SIDE BRACKET-SIDEBRACKET-TOP

BRACKET-BOTTOM

AA

C

B

STAY-TOP



LCD Panel Replacement Final Steps - Wiring and Wiring Clamps**1) To replace the LCD Panel, reverse the disassembly procedure.2) Install the wiring and wiring clamps as shown in the following diagrams.

WIRING/CLAMP LOCATIONS (LT-40151 & LT-40153)

CLAMP

CLAMP

CLAMP


CLAMP

CLAMP

CLAMP



WIRING/CLAMP LOCATIONS (LT-46249)

CLAMP

CLAMP

CLAMP


CLAMP CLAMP

CLAMP



WIRING/CLAMP LOCATIONS (LT-52249)

CLAMP

CLAMP

CLAMP


REMOTE CONTROL USE FOR SERVICEMany service functions and adjustments are accessed using the Remote Control.

The VLP41 uses a new version remote. Service functions and adjustments can be performed with either the old or newversions. However, several buttons have different names or labels.

The remote buttons associated with service that have been changed are shown below with the old buttons’ name inparenthesis. For full remote instructions, refer to the Owner’s Guide.

REMOTE CONTROL

ACTIVITY(INPUT or DEVICE)

LAST(QV)

PAGE UP(AUDIO)

PAGE DOWN(VIDEO)

NEW BUTTON NAME(OLD BUTTON NAME)

BACK(EXIT)


OPTION MENU1. Press the <MENU> button on the remote control.2. Press the buttons <2-4-7-0>. The screen will display the Option Menu.

NOTE: If the ISF (ADV) video settings have been calibrated, see the section Backup / Restore ISF Settingsbefore performing Reset and Initialization procedures.

DIGITAL SIGNAL STRENGTH1. Tune to a Digital Channel.2. From the Option Menu, scroll down and highlight “Digital Signal Strength.”3. Press <ENTER>. The screen will display the Digital Signal Strength Menu.

SNR Recommended Levels:8VSB = 16 to 3364 QAM = 22 to 35256 QAM = 27 to 38

OPTION MENU

Option Menu<MENU><2-4-7-0>

InitializePower Restore OFFProduction Mode OFFDigital Signal Strength <1~9>NetCommand Software Vxx xxx.xxTotal hours of use 0

Digital Signal Strength Menu"Digital Signal Strength" <ENTER>

TunerFrequency(MHz) 749Signal Level <1~9>Modulation 8VSB AirCarrier Lock LockedSNR 29.09Correctable errors 0Un Correctable errors 0


Reset / Initialization Guide

RESET / INITIALIZATIONSERVICE TIP:Many customer generated symptoms, intermittent symptoms or no symptom found can be resolved by using the variousReset and Initialization options. Before visiting the customer’s home ask the customer 1st perform a System Reset bypressing the <POWER> button on the front panel and holding it for 8 seconds. If this does not resolve the issue,they can perform an A/V Reset by pressing the <ACTIVITY> + <VOL > buttons on the front panel at the same timeand holding for 10 seconds. Then, if necessary, perform a user level Initialization by pressing <MENU><1-2-3><ENTER> with the remote. The customer should be made aware when settings and/or options will be reset. For moreinformation, see the chart below.NOTE: If the ISF (ADV) video settings have been calibrated, see the section Backup / Restore ISF Settings beforeperforming Reset and Initialization procedures.

Reset Name When to use How to use Resulting ActionRemote Control TV Layer Reset

Returns the remote control TV layer to normal operation.

1) 2) 2) 3) 3)

Set the s lide 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 contrrol 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 Receiver feature has been used.

1) 2) 2) 3)

(1) Set the device control to TV position.(2) Press and hold the <POWER> button until it flashes twice then release the button.(3) Enter the code <9-9-3>< + >.

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 Memory Reset, by individual input

When the audio and or video settings for a single input seems to be incorrect.

All Audio and Video settings for the individual input are reset except for the Listen To, Language, Balance and Closed Caption settings.

A/V Reset, all inputs

To reset audio and video adjustments for all inputs to the original factory settings.

All Audio and Video settings are reset to the factory default settings. No other menu options are changed.

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 other unusual symptoms.

TV Micro Re-boots. Note: The changes made during the current TV-On period may be lost. All other previous user settings are not lost.

Initialize User Level

To reset all customer settings except V-Chip

All customer menu options and A/V settings except V-Chip are reset to factory default.

Initialize - Service Level

To reset all customer settings All customer menu options and A/V settings are reset to factory default.

V-Chip Password Bypass

If V-Chip password is not known Password will be bypassed. If in the V-Chip menu, enter a new password.

Unlock Front Panel

To unlock the front panel if it has been locked in the V-Chip Menu.

Front Panel becomes operational. Other V-Chip settings not changed. Note: Cannot be performed while in the Low Power mode and the set is Off.

<MENU><2-4-7-0>. Highlight INITIALIZE and press <ENTER>

Press < >+<9> at the same time.

Press and hold the front panel <ACTIVITY> button for 8 seconds.

MENU --> Audio/Video--> AV Reset

While viewing the TV, press the front panel buttons <ACTIVITY> + <VOL > at the same time and hold for 10 seconds.

Press the <POWER> button on the front panel and hold it for 8 seconds.

Press <MENU><1-2-3><ENTER>


RESET / INITIALIZATION (Continued)INITIAL SETTINGSAudio/Video Initial MenuSettings Language (idioma) EnglishVideo Clock

Picture Mode Bright Time 12:00PMContrast 63 Date 1/01/09Brightness 31 Time Zone EasternColor 31 Daylight Savings OffTint 31 TimerSharpness 31 Timer OffColor Temperature High Day DailyVideo Noise (Off-Low-Mid-High) Medium Time 12:00PMSharp Edge On Input ANT-1Deep Field Imager (VLP41+/++) On Channel 2Backlight 40" (39) 46" & 52" (35) Channel Management Ant Air

Audio ScanBass 31 EditTreble 31 Channel in Memory All AddedBalance Off Sound ProjectorSound Mode Surround TV Location CenterListen To (Analog only) Stereo TV Wall Length 16 feetLanguage (Digital only) English Other Wall Length 0 feetLevel Sound Off TV to sofa 12 feet

Global Custom ---Video Mute On Inputs Menu StandardAudio only screen saver On Name

Film Mode Off Antenna On Smooth 120 Film (VLP41/41+) Standard Input-1 Gray out Smooth 120 Film (VLP41++) 5 Input-2 Gray out Blue Glow (VLP41+ only) On Input-3 Gray out Test Picture --- HDMI-1 Gray outPicture Plus HDMI-2 Gray out

PerfectColor 31(All colors) HDMI-3 Gray outPerfectTint 31(All colors) HDMI-4 Gray out

Advanced Picture --- Learn (VLP41+/41++) Gray outCaptions Menu A/V Receiver (VLP41+/41++) Gray outServices Learn Gray out

Digital On if Mute Assign Device Gray outAnalog On if Mute HDMI ControlAnalog Background Gray CEC Device Off as per discovery

Effects Assign ActivityFont Default Assign Activity for ANT Watch TVFont Size Large Format (Press MORE, 0)Font Color White Ant-1 (HD Digital) 16:9 StandardFont Opacity Translucent Ant (NTSC) Input-1, 2, 3 StretchBackground Color Black HDMI-1, 2, 3, 4 (Video or PC) StandardBackground Opacity Translucent USB Photo (VLP41++) --

Lock Menu TV Volume 16Lock Off

TV Rating Gray until OnMovie Rating Gray until On

TimeLock by Time OffLock Time 12:00PMUnlock Time 12:00PM

Front PanelSide Button Lock Off


A. A/V MemoryEach of the external inputs has it’s own Audio/Video Memory. A change in an A/V setting at a specific input isstored in memory for that specific input.

B. A/V Reset1. Press the side panel <ACTIVITY> and <VOL > buttons at the same time and hold for 10 seconds to

initialize the A/V Settings for all Inputs and Modes.2. The AV Reset in the user’s menu initializes only the A/V Memory for the currently selected input.

RESET / INITIALIZATION (Continued)

RETAIL HOME GAME PC ADV1Picture Mode Brilliant Bright Natural Natural NaturalContrast Max (63) Max (63) Max (63) Max (63) -50Brightness Center (31) Center (31) Center (31) Center (31) Center (31)Color Center (31) Center (31) Center (31) Center (31) Center (31)Tint Center (31) Center (31) Center (31) Center (31) Center (31)Sharpness Center (31) Center (31) Center (31) Center (31) Center (31)Color Temperature High High High High Low (f ixed)Video Noise Mid Mid Off (grey out) Off OffSharpEdge (VLP41++) On On On Off OffDeepFieldImager (VLP41+) On On On Off OffSmooth120 Film Motion Off Off Off Off OffFilm Mode Off Off Off Off OffH-Position ---- ---- ---- ---- 31V-Position ---- ---- ---- ---- 31Super Resolution ---- ---- ---- ---- OffGamma ---- ---- ---- ---- 2.4 (default)Red Gain ---- ---- ---- ---- 1023 (default)Green Gain ---- ---- ---- ---- 1023 (default)Blue Gain ---- ---- ---- ---- 1023 (default)Red Cutoff ---- ---- ---- ---- 0Green Cutoff ---- ---- ---- ---- 0Blue Cutoff ---- ---- ---- ---- 0Red Adjustment ---- ---- ---- ---- R=15; G,B=0Green Adjustment ---- ---- ---- ---- G=15; R,B=0Blue Adjustment ---- ---- ---- ---- B=15; G,R=0Yellow Adjustment ---- ---- ---- ---- G,R=15; B=0Cyan Adjustment ---- ---- ---- ---- G,B=15; R=0Magenta Adjustment ---- ---- ---- ---- R,B=15; G=0

MODEVIDEO SETTINGS

HDMI(Video)

Bass Center Center Center CenterTreble Center Center Center CenterBalance Center Center Center CenterSound mode Stereo Stereo Stereo StereoListen To Stereo n/a n/a n/aLevel Sound Off Off Off n/a

Language (Digital only) English n/a n/a n/a

AUDIO SETTINGS Ant INPUT COMP


BACKUP / RESTORE ISF SETTINGSIf the customer has calibrated the ISF (ADV) video settings, the settings data can be backed up on a USBmemory device. If the settings are lost due to a Reset or Initialization procedure, PWB-MAIN replacement orother reasons, the settings data can be restored.

Backup ISF Settings.1. Insert a empty USB memory device into the USB slot.2. Press the <MENU> button on the remote control. The Customer Menu will appear.3. Press the <2-4-5-7> buttons. The Service Menu will appear.4. Press the <0> button. The Data Selection Menu will appear. See below.

5. Use the < > buttons to select “BACKUP AND RESTORE ISF SETTING” and press <ENTER>.6. Use the < > buttons to toggle to "Backup ISF Settings to USB” (Default).

7. While "Backup ISF Settings to USB” is displayed, press <ENTER>. The screen will flash themessage "Backup completed."

8. Remove the USB memory device and store it in a safe place.9. Press <MENU> to exit.

Restore ISF Settings.1. Insert the USB memory device with the backup data into the USB slot.2. Press the <MENU> button on the remote control. The Customer Menu will appear.3. Press the <2-4-5-7> buttons. The Service Menu will appear.4. Press the <0> button. The Data Selection Menu will appear. See above.5. Use the < > buttons to select “BACKUP AND RESTORE ISF SETTING” and press <ENTER>.6. Use the < > buttons to toggle to “Restore ISF Settings From USB.”

Warning: DO NOT press <ENTER> while "Backup ISF Settings to USB" is displayed. The data on theUSB will be overwritten and lost.

7. While “Restore ISF Settings From USB” is displayed, press <ENTER>. The screen will flash themessage "Restore completed." The TV will then turn off.

8. Remove the USB memory device before turning the TV back on.

BACKUP/RESTORE IS F S ETTING M ENU

Backup IS F S et t ings t o USB W ARNING Do Not Press ENTER

BACKUP/RESTORE IS F SETTING M ENU

Rest ore IS F Set t ings Fro m USB

Rest ore co mplet ed.

RESET / INITIALIZATION (Continued)

SOUND PROJECTOR TRANSDUCER TEST

BACKUP AND RESTORE ISF SETTINGSRED ONLY AND GREEN ONLY

BACKUP/RESTORE ISF SETTING MENU

Backup ISF Settings to USB

BACKUP/RESTORE ISF SETTING MENU

Backup ISF Settings to USB Backup completed.


SELF DIAGNOSTICSTo activate, press the side panel <ACTIVITY> + <CH > buttons at the same time and hold for 5 seconds.The STATUS LED will then flash denoting a two digit code.

• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.• The flashing then pauses for approximately 1/2 second.• The LED then flashes indicating the value of the LSD (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.

Note: The TV must be in “Shut Down” and the LED will probably be indicating an abnormal condition.If the TV is switched Off, AC is removed, or a System Reset is performed, the code automaticallyresets to “12” No Error. See the Error Code Log to retrieve a history of errors.

Note: Use the front panel buttons, not the remote control.Note: If there is no response, the front panel may be locked by a V-Chip setting. To unlock, press and hold

<ACTIVITY> on the front panel for 5 seconds.

LED INDICATIONS AND SELF DIAGNOSTICS

The front panel Status LED provides an indication of the set’s operation and the possible cause of a malfunction.

STATUS LED Indication ConditionOff Off (standby)Green Power OnSlow Blink Green Power Off with Timer SetFast Blink Green Power On Booting

STATUS LED Indication ConditionBlinking Red Circuit Failure

NORMAL INDICATIONS

ABNORMAL INDICATIONS (For details perform Self Diagnostics procedure.)

Side Panel

ACTIVITY

ENTER

POWER

CH

VOL

STATUS

Status LED


ERROR CODE LOGThe Error Code Log may be helpful to retrieve the code for an error that occurred in the past.To access the Error Code Log: Press <MENU> <3-5-6-4>

Error Code Definitions• PAGE - Current page number• CURRENT TIME - total hours of operational use.• LAMP TIME - usage hours when the error occurred.• CODE - the specific Error Code that occurred.• STATUS: HAPPENED - Indicates an error was recorded.

Press <CANCEL> to erase the Log.

ERROR CODESError Codes, causes and the most likely failure are listed below:

ERROR CODESError Code Cause Most Likely Failure

12 Normal off No Problem detected27 INVERTER-SHORT PWB-POWER or Panel-Assembly44 LVDS Cable connection detection Loose LVDS Cable at PWB-MAIN or Panel Assembly48 PON-SHORT PWB-MAIN59 PNL12V SHORT PWB-POWER or Panel-Assembly69 T2W-PWR SHORT PWB-POWER or PWB-NET/ML (VLP41++)

***** PAGE (001/001) *****

CURRENT TIME: 01455 HOURS

LAMP TIME CODE STATUS00413 HRS 44 HAPPENED

00716 HRS 59 HAPPENED Press Up t o Previous Page

Press Down to Next Page

Press Right to Top Page

Press Left to Last Page

Press CANCEL to Init ialize

Press MENU to Exit

NOTE: The Error Code Log is intended as a reference tool and is not meant to be used as a final determinationof a defective part.

SOUND PROJECTOR TRANSDUCER TESTThis procedure will test will each of the TV’s speakers individually using an internal white noise generator.

1. Press the <MENU> button on the remote control. The Customer Menu will appear.2. Press the <2-4-5-7> buttons. The Service Menu will appear.3. Press the <0> button. The Data Selection Menu will appear. See below.

4. Use the < > buttons to select “SOUND PROJECTOR TRANSDUCER TEST” and press <ENTER>. TheSound Projector Transducer Test Menu will be displayed. The tone will automatically cycle from onespeaker to the next as indicated on screen. Follow the instructions to manually cycle the tone.

5. Press <MENU> to exit.

SOUND PROJECTOR TRANSDUCER TEST

BACKUP AND RESTORE ISF SETTINGSRED ONLY AND GREEN ONLY

Sound Projector Transducer Test

AUTO

Press AUDIO/Page UP to toggle between AUTO and MANUAL

Press Right to Next Speaker (When MANUAL)Press Left to Previous Speaker (When MANUAL)

Press 0 to end the test

6 7 8 9 101 2 3 4 5 1611 12 13 14 15


Using Lead Free SolderPb Solder

The above symbol indicates Lead (Pb) Free solder wasused during the construction of PWBs. Only LeadFree solder should be used when servicing thesePWBs.

Solder must be compatible with that used by themanufacturer. Leaded solder can not be used onPWBs manufactured with Pb-free solder. The Mitsub-ishi standard for service requires the use of Tin-Silver-Copper (Sn-96.5, Ag-3.0, Cu-0.5). It can be obtainedthrough the Parts Department.Order part number: PB FREE SOLDER

Lead Free solder has a higher melting point, and doesnot “wet” as well as leaded solder. This means it doesnot adhere as readily to the solder iron tip, and thesurface to be soldered. To counteract this, the fluxused is more corrosive.

The following cautions must be taken when using PbFree solder.

• Higher temperatures can cause the PWB towarp, detaching surface mountcomponents.

• Higher temperatures maycause thermal damage tocomponents.

• Higher temperatures can causeplastics, such as connectors,relays, LEDs electrolyticcapacitors, etc. to melt or warp.

• Higher temperatures can causesurface oxidation resulting inpoor solder spread-ability andwet-ability.

• The flux is more corrosive.

• The time required for a good solder connection maytake longer.

• Poor wet-ability can cause solder balls.• Higher temperatures can cause flux spattering.• Soldering iron tip life is shortened.• Dull finish solder joints (not shiny) can appear to be

a “cold” solder joint.

In general a tip temperature of 700° F will usually providegood results.

Displays used to indicate Pb-freePCBs will be marked, indicating the level of Pb-free con-struction. Table 1 defines the levels by phase and showsthe different symbols that will be displayed on the PCB.Additionally, a PCB constructed using Pb-free solder maybe simply marked LFS.

When possible, the indication will be placed close to thepart number that is screened onto the PCB (not the partlabel). Figure 1 is an example of a PCB showing thedisplay and its location.

Pb-Free Phase Definition Display

Short Display (When the area is too small)

Phase-1 PCB's constructed using Pb-free solder.

Phase-2 Solder, PCB surface finishing and component lead plating is Pb-free. Components may have internal Pb.

Phase-3 Solder, PCB surface finishing and components are Pb-free. (100% Pb-free)

Table 1: Pb-Free Phases and Symbols

Pb PCA

Pb Joints

Pb S

Pb J

Pb P

Pb Solder

Pb-FreeDisplay

Figure 2: Pb-Free display on PWB


CHIP PARTS REPLACEMENTSome resistors, shorting jumpers (0 Ohm resistors),ceramic capacitors, transistors and diodes are chip parts.The following precautions should be taken when replacingthese parts.

Cautions:1. Use a fine tipped, well insulated soldering iron

and tweezers.2. Melt the solder and remove the chip parts

carefully so as not to tear the copper foil fromthe printed circuit board.

3. Discard removed chips; do not reuse them.4. Do not apply heat for more than 3 (three)

seconds to new chip parts.5. Avoid using a rubbing stroke when soldering.6. Take care not to scratch, or damage the chip

parts when soldering.7. Supplementary cementing is not required.

Chip Parts Removal (Resistors, Capacitors, etc.)1. Grasp the part with tweezers. Melt the solder

at both sides alternately, and remove one sideof the part with a twisting motion.

2. Melt the solder at the other side and removethe part.


Parts OrderingTo expedite delivery of replacement parts orders, specify the following:1. Model Number/Serial Number2. Part Number and description3. Quantity

Note: Unless complete information is supplied, delay in processing of orders will result.

Critical and Warranty Parts Designation

Critical Electrical Components are indicated by Bold Type and a icon in the Parts List, and in theschematic diagrams by a red hatch and a .

Parts Tolerance CodesRefer to the following chart for tolerance characteristics of electrical components.

MARK B C D F G J K

Tolerance % ± 0.1 ± 0.25 ± 0.5 ± 1 ± 2 ± 5 ± 10

MARK M N V X Z P Q

Tolerance % ± 20 ± 30 ± 10 + 40 + 80 + 100 + 30

-20 -20 - 0 -10

MARK M N V X Z

Tolerance (pF) ± 0.1 ± 0.25 ± 0.5 ± 1 ± 2

REPLACEMENT PARTS

1234567890123456789012345678901234567890


QUICK REFERENCE

LT-40151 LT-40153 LT-46151 LT-46153 LT-46249 LT-52151 LT-52153 LT-52249LCD-MODULE 289P137020 289P138020 289P147010 289P143020 289P148020ASSY-PWB-MAIN 934C335003 934C335004 934C335001 934C335002 934C335007 934C335005 934C335006 934C335008ASSY-PWB-POWER 934C336001 934C336002 934C336003 934C336002 934C336003ASSY-PWB-SIDE 934C334001ASSY-PWB-LED 934D066001ASSY-PWB-PREAMP 934D067001 934D067002 934D067001 934D067002 934D067001 934D067002ASSY-PWB-SBL 934D076001 934D076001ASSY-PWB-NET/ML 934C339001 934C339001ASSY-PWB-MLPOWER 934C342001 934C342001REMOTE-CONTROL 290P175010 290P175020 290P175010 290P175020

[#] Model Legend: (a) LT-40151, (b) LT-40153, (c) LT-46151, (d) LT-46153, (e) LT-46249, (f) LT-52151, (g) LT-52153, (h) LT-52249

Ref # Part # Part Name & Description [#]Ref # Part # Part Name & Description [#]


TRANSISTORSConventional Transistors (By Ref #)

Ref # Part # Part Name & Description [#]Q9007 261P235010 TR - 2SC4356-T111-EQ9008 261P235010 TR - 2SC4356-T111-EQ9012 261P227010 TR - FQPF27P06Q9101 261P236010 TR - F15F50VX3M-7012 abcdfgQ9101 261P236010 TR - F15F50VX3M-7012 ehQ9102 261P236010 TR - F15F50VX3M-7012 abcdfgQ9102 261P236010 TR - F15F50VX3M-7012 ehQ9201 261P234010 TR - F11F60CPM-7112 abcdfgQ9201 261P234010 TR - F11F60CPM-7112 ehQ9202 261P234010 TR - F11F60CPM-7112 abcdfgQ9202 261P234010 TR - F11F60CPM-7112 eh

INTEGRATED CIRCUITSIC1501 276P735010 IC-C-MOS - BCM7405 KFEB ehIC1502 276P742020 IC-C-MOS - PST8428NR ehIC1503 270P880010 IC - 24LC64I/SN ehIC1601 276P744010 IC-C-MOS - NT5TU64M16DG-AC ehIC1602 276P744010 IC-C-MOS - NT5TU64M16DG-AC ehIC1603 271P033020 IC - LP2996LQNOPB ehIC1702 276P545040 IC-C-MOS - NAND01GW3B2CN6E ehIC1703 271P171020 IC - MIC2040-2YMM ehIC1704 265P151010 VARISTOR - AVF16C225A000F405 ehIC1733 271P171020 IC - MIC2040-2YMM ehIC1734 265P151010 VARISTOR - AVF16C225A000F405 ehIC1902 271P251040 IC - MM1662FHBE ehIC1904 271P254010 IC - ISL6545ACBZ-TS2698 ehIC1906 271P254010 IC - ISL6545ACBZ-TS2698 ehIC1907 271P254010 IC - ISL6545ACBZ-TS2698 ehIC1908 271P254010 IC - ISL6545ACBZ-TS2698 ehIC1B01 271P171010 IC - MIC2040-1YMMIC1B02 265P151010 VARISTOR - AVF16C225A000F405IC2A01 276P726010 IC-C-MOS - SiI9287CNUIC2A51 276P742020 IC-C-MOS - PST8428NRIC3010 276P748020 IC-C-MOS - MAX9736AETJ+ ehIC3F00 276P605010 IC-C-MOS - MAS 3529H-QA-C7IC3G00 276P604020 IC-C-MOS - MAP 5401M-QB-E5IC3G01 271P326010 IC - NJM2831F08 bdeghIC3G01 271P326010 IC - NJM2831F08 acfIC3G02 271P326020 IC - NJM2831F05 bdeghIC3G03 271P319010 IC - MM1701AHBEIC3H00 276P723010 IC-C-MOS - AK4359VFIC3H50 276P723010 IC-C-MOS - AK4359VFIC3J01 276P606010 IC-C-MOS - MAX9715IC3J10 276P606010 IC-C-MOS - MAX9715IC3J20 276P606010 IC-C-MOS - MAX9715IC3J30 276P606010 IC-C-MOS - MAX9715IC3J40 276P606010 IC-C-MOS - MAX9715IC3J50 276P606010 IC-C-MOS - MAX9715IC3J60 276P606010 IC-C-MOS - MAX9715IC3J70 276P606010 IC-C-MOS - MAX9715IC3K00 271P254010 IC - ISL6545ACBZ-TS2698IC4A01 276P742020 IC-C-MOS - PST8428NRIC4A02 276P687010 IC-C-MOS - BCM3549LKFSB5GIC4F01 276P744010 IC-C-MOS - NT5TU64M16DG-ACIC4F02 271P033020 IC - LP2996LQNOPBIC4F03 276P744010 IC-C-MOS - NT5TU64M16DG-ACIC4G01 271P251040 IC - MM1662FHBEIC4L01 276P485010 IC-C-MOS - SC16C652BIB48IC4L02 276P740010 IC-C-MOS - LC4064ZE-7TN48CIC4L03 276P545070 IC-C-MOS - NAND01GW3B2BN6E-P2IC4L05 276P628010 IC-C-MOS - PL671-33-120SC-RIC5A01 276P722010 IC-C-MOS - UPD808526F1-S11-MNJ-AIC5A02 271P319010 IC - MM1701AHBEIC5A03 271P319010 IC - MM1701AHBEIC5F00 276P738010 IC-C-MOS - FRC 9459QIC5F02 276P645010 IC-C-MOS - 24FC1025 I/SMIC5F03 271P251040 IC - MM1662FHBEIC5F06 271P319030 IC - MM1701WHBEIC5L01 276P749010 IC-C-MOS - NT5TU16M16AG-25DIC5L02 276P749010 IC-C-MOS - NT5TU16M16AG-25DIC5L03 271P033020 IC - LP2996LQNOPB

TRANSISTORSCHIP Type Transistors (Listed by Part No.)

Part No. Description261P842080 2SC3052-T112-1E;F eh261P844010 RT1N436C-T112-1 eh261P845010 RT1P241C-T1112-1261P874010 FDS8896261P875010 FDS8984 eh261P876010 FDS6298261P877010 FDC655BN eh261P878010 RT3Y97M-T111-1 abcdfg261P881010 2SB1424T100R261P889010 ISA1235AC1-T112A-1E,1F

IC7A01 276P576010 IC-C-MOS - UPD78F1178GF(S)-GAT-AXIC7A02 276P325010 IC-C-MOS - MAX4232AKA+T/SOT-23+IC7A03 276P578020 IC-C-MOS - MM3376A33NREIC7E01 276P519010 IC-C-MOS - 74HC132DB bdeghIC8521 276P525010 IC-C-MOS - MAX4489ASA+T bdeghIC9001 271P142010 IC - RT9H301CIC9030 271P315010 HIC - STR-A6159IC9101 271P308010 IC - MCZ5201D-7101IC9102 271P142010 IC - RT9H301CIC9201 276P750010 IC-C-MOS - UCC28061DRIC9A01 271P254010 IC - ISL6545ACBZ-TS2698IC9A02 271P254010 IC - ISL6545ACBZ-TS2698IC9A03 271P254010 IC - ISL6545ACBZ-TS2698IC9A04 276P578020 IC-C-MOS - MM3376A33NREIC9A81 271P254010 IC - ISL6545ACBZ-TS2698IC9E01 275P989010 IC-C-MOS - MAX3223ECAP ehIC9M00 276P773010 HIC - STR-W6253MD ehIC9M01 271P142010 IC - RT9H301C eh

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