Sharp LC-52D62U,LC-46D62U Service Manual

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LC-46D62U/LC-52D62U

SERVICE MANUAL

No. S86V8LC52D62U

LCD COLOR TELEVISION

LC-46D62U

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

inal condition and only parts identical to those specified should be used.

LC-52D62U

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION ............................................................i

PRECAUTIONS A PRENDRE LORS DE

LA REPARATION............................................... ii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ........................................................... iii

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL .................................. 2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ................................................ 3-1

CHAPTER 7. MAJOR IC INFORMATIONS

[1] MAJOR IC INFORMATIONS .........................7-1

CHAPTER 8. OVERALL WIRING DIAGRAM/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM ......................8-1

[2] SYSTEM BLOCK DIAGRAM .........................8-3

[3] MAIN BLOCK DIAGRAM............................... 8-5

CHAPTER 9. PRINTED WIRING BOARD

[1] R/C, LED UNIT PRINTED WIRING

BOARD.......................................................... 9-1

[2] KEY UNIT PRINTED WIRING BOARD .........9-2

[3] MAIN UNIT PRINTED WIRING BOARD........9-3

[4] TERMINAL UNIT PRINTED WIRING

BOARD........................................................ 9-11

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS

(LC-46D62U).................................................. 4-1

[2] REMOVING OF MAJOR PARTS

(LC-52D62U).................................................. 4-6

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE ....................... 5-1

CHAPTER 6. TROUBLE SHOOTING TABLE

[1] TROUBLE SHOOTING TABLE...................... 6-1

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

CHAPTER 10. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM.......................................................... 10-1

[2] SCHEMATIC DIAGRAM ..............................10-2

Parts Guide

This document has been published to be used for after sales service only. The contents are subject to change without notice.

LC-46D62U/LC-52D62U

LC-46D62U

Service Manual

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRECAUTION

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

3. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

4. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

5. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 120 volt AC outlet.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.

All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.)

Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

SAFETY NOTICE

Many electrical and mechanical parts in LCD color television have special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features

are identified by " " and shaded areas in the Replacement Parts List and Schematic Diagrams.

For continued protection, replacement parts must be identical to those used in the original circuit.

The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

F701 (250V 8A), F702 (250V 1A) F4702 (250V 4A), F4701/F4703 (250V 3A 127

DVM

AC SCALE

1.5k ohm 10W

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

0.15µF

TEST PROBE

LC-46D62U/LC-52D62U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

De nombreuses pièces, électriques et mécaniques, dans les téléviseur ACL présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les pièces électriques qui présentent ces particularités sont identifiées par la marque " " et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques.

Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas les mêmes caractéristiques que les pièces recommandées par l'usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.

AVERTISSEMENT

•

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

N'entreprendre aucune modification de tout circuit. C'est dangereux.

Débrancher le récepteur avant toute réparation.

Inspecter tous les faisceaux de câbles pour s'assurer que les fils ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistancecapacité, les isolateurs mécaniques, etc.

S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la fuite de courant, de la facon suivante:

Brancher le cordon d'alimentation directem-ent à une prise de courant de 120V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre.

Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension en travers de la résistance.

Toucher avec la sonde d'essai les pièces métalliques exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) La tension de pointe mesurèe ne doit pas dépasser 0.75V (correspondante au courant CA de pointe de 0.5mA). Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE

F701 (250V 8A), F702 (250V 1A) F4702 (250V 4A), F4701/F4703 (250V 3A ~ 127

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.

DVM

ECHELLE CA

1.5k ohm 10W

0.15

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

LC-46D62U/LC-52D62U

iii

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

Example:

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper.

PARTS CODE

PRICE

RANK

PART

DELIVERY

DESCRIPTION

ZHNDAi123250E BL J φ0.3mm 250g (1roll) ZHNDAi126500E BK J φ0.6mm 500g (1roll) ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

LC-46D62U/LC-52D62U

1 – 1

LC-46D62U

Service Manual

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Digital cable

(64/256 QAM)

1-135ch (non-scrambled channel only)

Emergency alert messages via Cable are unreceivable.

• As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

LCD panel

Number of dots

TV Function

TV-standard (CCIR)

Receiving Channel

VHF/UHF

CATV

Digital Terrestrial Broadcast (8VSB)

Audio multiplex

Audio out

Terminals

Rear

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

ANTENNA

DIGITAL AUDIO OUTPUT

OUTPUT

OSD language

Power Requirement

Power Consumption

Weight (approx.)

Dimension*

(WxHxD)

Operating temperature

6,220,800 dots (1920x1080x3 dots)

American TV Standard ATSC/NTSC System

VHF 2-13ch, UHF 14-69ch

1-135ch (non-scrambled channel only)

2-69ch

BTSC System

15Wx2

AV in, COMPONENT in

S-VIDEO in, AV in

Audio in, HDMI in with HDCP

HDMI in with HDCP

75 Unbalance, F Type x 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)

Optical Digital audio output x 1 (PCM/Dolby Digital)

Audio out

English/French/Spanish

AC 120 V, 60 Hz (FOR NORTH AMERICA) AC 110-240 V, 50/60 Hz (FOR OTHERS)

+32°F to +104°F (0°C to +40°C)

Item

Model: LC-46D62U Model: LC-52D62U

46" Advanced Super View & BLACK TFT LCD

52" Advanced Super View & BLACK TFT LCD

with stand

w/o stand

with stand

270 W (0.7 W Standby with AC 120V) 302 W (0.7 W Standby with AC 120V)

72.8 lbs./33.0 kg

81.6 lbs./37.0 kg

/8x317/64x1211/64inch

83.8 lbs./38.0 kg

92.6 lbs./42.0 kg

/64x3125/32x459/64inch

/64x347/32x1211/64inch

/8x2843/64x457/64inch

LC-46D62U/LC-52D62U

2 – 1

LC-46D62U

Service Manual

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

POWER button

TV (Front)

Channel buttons

(CH /)

Volume buttons

(VOL /)

INPUT button

OPC indicator*

POWER indicator**

OPC sensor*

Remote control sensor

NOTE

*OPC: Optical Picture Control **See page 15 for TV status indicator.

SLEEP indicator**

TV (Rear)

HDMI terminal (INPUT 4)

INPUT 3 terminals

AUDIO OUTPUT terminals

HDMI terminal (INPUT 5)

DIGITAL AUDIO OUTPUT terminal

Antenna/Cable in

INPUT 1 terminals

AC INPUT terminal

AUDIO terminal (INPUT 4)

INPUT 2 terminals

LC-46D62U/LC-52D62U

2 – 2

114

11 23

13 27

Part names

1 TV POWER: Switch the TV power on or enters standby

mode.

2 DISPLAY: Display the channel information. 3 SOURCE POWER: Turns the power of the external

equipment on and off.

4 External equipment operational buttons: Operate the

external equipment.

50…9:Set the channel. 6(DOT): 7 INPUT: Select a TV input source. (TV, INPUT 1, INPUT 2,

INPUT3,INPUT4,INPUT5)

8VOL/:Set the volume. 9 SURROUND: Select Surround settings. 10 FREEZE: Set the still image. Press again to return to

normal screen.

11 EXIT: Turn off the menu screen. 12 SLEEP: Set the sleep timer. 13 AUDIO: Selects the MTS/SAP or the audio mode during

multi-channel audio broadcasts.

14 FUNCTION: Switches the remote control for TV, CBL/

SAT, VCR, DVD and AUDIO operation. Indicator lights up for the current mode.

* To enter the code registration mode, you need to press

FUNCTION and DISPLAY at the same time.

15 LIGHT : When pressed all buttons on the remote

control unit will light. The lighting will turn off if no operations are performed within about 5 seconds. This button is used for performing operations in low-light situations.

16 VIEW MODE: Select the screen size. 17 ENT: Jumps to a channel after selecting with the 0…9

buttons.

18 FLASHBACK:Return to the previous channel or external

input mode.

CH / : Select the channel. 20 MUTE: Mute the sound. 21 MENU: Display the menu screen. 22 ////ENTER: Select a desired item on the

screen.

23 RETURN: Return to the previous menu screen. 24 FAVORITE CH

A, B, C, D: Select 4 preset favorite channels in 4 different

categories.

While watching, you can toggle the selected channels by

pressing A, B, C and D.

25 FAVORITE: Register favorite channel. 26 CC: Display captions from a closed-caption source.

27 AV MODE: Select an audio or video setting. (When the

input source is TV, INPUT 1, 2 or 3: STANDARD, MOVIE,

GAME, USER, DYNAMIC (Fixed), DYNAMIC. When

the input source is INPUT 4 or 5: STANDARD, MOVIE,

GAME, PC, USER, DYNAMIC (Fixed), DYNAMIC)

Remote control unit

NOTE

When using the remote control unit, point it at the TV.

LC-46D62U/LC-52D62U

2 – 3

Removing the stand

Before detaching (or attaching) stand, unplug the AC cord from the AC INPUT terminal.

CAUTION

Do not remove the stand from the TV unless using an optional wall mount bracket to mount it.

Before attaching/detaching stand

Before performing work make sure to turn off the TV. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.

Setting the TV on the wall

CAUTION

This TV should be mounted on the wall only with the AN-52AG1 (SHARP) wall mount bracket. The use of other wall mount brackets may result in an unstable installation and may cause serious injuries. Installing the TV requires special skill that should only be performed by qualified service personnel. Customers should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or mounting that results in accident or injury.

Using an optional bracket to mount the TV

You can ask a qualified service professional about using an optional AN-52AG1 bracket to mount the TV to the wall. Carefully read the instructions that come with the bracket before beginning work.

Hanging on the wall

AN-52AG1 wall mount bracket. (See the bracket instructions for details.)

Vertical mounting

About setting the TV angle and height adjustment

Unfasten the four screws used to secure the stand in place.

Detach the stand from the TV. (Hold the stand so it will not drop from the edge of the base area.)

Appendix

NOTE

To attach the stand, perform the above steps in reverse order.

Angular mounting

5/0/ 5 cm (canbemoved 5cmupor down)

0/5/10/15/20°

NOTE

Detach the cable clamps on the rear of the TV when using the optional mount bracket.

Angle of TV

Height Adjustment

Hex key

LC-46D62U/LC-52D62U

2 – 4

Troubleshooting

Possible Solution

Is the volume too low? Is "Variable" selected in "Output Select"? Haveyou pressed MUTE on the remote control unit?

Cautions regarding use in high and low temperature environments

Appendix

Problem

No power

Unit cannot be operated.

Remote control unit does not operate.

Picture is cut off/with sidebar screen.

Strange color, light color, or color misalignment

Power is suddenly turned off.

No picture

No sound

Check if you pressedTV POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV. IstheACcorddisconnected? Has the power been turned on?

External influences such as lightning, static electricity, may cause improper operation. In this case, operate the unit after first turning on the power of the TV or unplugging the AC cord and replugging it in after 1 or 2 minutes.

Is the FUNCTION set correctly? Set it to the TV setting position. Are batteries inserted with polarity (+,-) aligned? Are batteries worn out? (Replace with new batteries.) Are you using it under strong or ”uorescent lighting? Is a fluorescent light illuminated near the remote control sensor?

Is the image position correct? Are screen mode adjustments such as picture size made correctly?

Adjust the picture tone. Is the room too bright? The picture may look dark in a room that is too bright. Check the input signal setting.

Is the sleep timer set? Check the power control settings. The unit's internal temperature has increased. Remove any objects blocking vent or clean.

Is connection to other components correct? Is correct input signal source selected after connection? Is the correct input selected? Is picture adjustment correct? Is "On" selected in "Audio Only"? Is a non-compatible signal being input?

When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed.. This is not a malfunction, and the unit will recover when the temperature returns to normal. Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction. Storage temperature: -4°F to +140°F (-20°C to +60°C)

Troubleshooting-Digital broadcasting

The error message about reception of broadcast

Failed to receive broadcast.

E203 Check the broadcast time in the program guide.

The example of an error message displayed on a screen

No broadcast now.

Error code

E202

Possible Solution

Check the antenna cable. Check that the antenna is correctly setup.

LC-46D62U/LC-52D62U

2 – 5

PC format compatibility chart

DDC is a registered trademark of Video Electronics Standards Association. Power Management is a registered trademark of Sun Microsystems, Inc. VGA and XGA are registered trademarks of International Business Machines Co., Inc.

31.5 kHz

37.9 kHz

37.5 kHz

35.1 kHz

37.9 kHz

48.1 kHz

46.9 kHz

48.4 kHz

56.5 kHz

60.0 kHz

47.7 kHz

64.0 kHz

640x480

720x400

VGA

800x600SVGA

XGA 1024 x 768

WXGA 1360 x 768

SXGA 1280 x 1024

70 Hz

60 Hz 72 Hz 75 Hz 56 Hz 60 Hz 72 Hz 75 Hz 60 Hz 70 Hz 75 Hz 60 Hz 60 Hz

O O O O O O O

O O O

PC Horizontal Frequency VESA StandardResolution Vertical Frequency

It is necessary to set the PC format correctly to display XGA and WXGA signal. Refer to OPERATION MANUAL to set PC input signals.

LC-46D62U/LC-52D62U

2 – 6

Picture

Audio

Option

Power Control

Digital Setup

Picture

Audio

Option

Power Control

Menu items for TV/INPUT 1/2/3

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black Fine Motion 3D-Y/C Monochrome Film Mode Range of OPC

EZ Setup CH Setup Antenna Setup-DIGITAL Input Skip Input Label Parental CTRL Position Language Reset

Treble Bass Balance Surround

Audio Only Digital Noise Reduction Input Select Output Select Color System Caption Setup Program Title Display Favorite CH

No Signal Off No Operation Off

Audio Setup

Menu items for HDMI (INPUT 4/5)

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

Color Temp. Black Fine Motion Monochrome Film Mode Range of OPC

Input Skip Input Signal Input Label Position Language Reset

Treble Bass Balance Surround

Audio Only Digital Noise Reduction HDMI Setup Output Select

No Signal Off No Operation Off

NOTE

Some menu items may not be displayed depending on the selected input source.

Basic adjustment settings

Setup

LC-46D62U/LC-52D62U

3 – 1

LC-46D62U

Service Manual

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

2563/64(660)

(449)

443/8(1127)

/64(309)

/8(98)

/64(124)

(100)

77/8(200)

(200)

(728)

(790)

(62)

407/32(1021.4)

(575.4)

2563/64(660)

/64(309)

/64(1263)

/64(1155.0)

(651.0)

(489)

325/32(96) 459/64(125)

(100)

(807)

(869)

77/8(200)

(200)

(62)

Unit: inch/(mm)

LC-46D62U

LC-52D62U

LC-46D62U/LC-52D62U

4 – 1

LC-46D62U

Service Manual

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS (LC-46D62U)

1. Detach the SD Card Cover .

2. Remove the 4 lock screws and detach the Stand.

3. Remove the 5 lock screws .

4. Remove the 13 lock screws and detach the Rear Cabinet.

SD Card Cover

Rear Cabinet

Stand

LC-46D62U/LC-52D62U

4 – 2

5. Remove the 8 lock screws and detach the Brige Angle and Chassis Fix Angle.

6. Remove the 8 lock screws 8 lock point and detach the Stand St Cover-R

7. Remove the 4 hook and detach the Stand assist Holder.

8. Remove the 8 lock screws and detach the Stand Fix Angle.

9. Remove the 7 lock screws and detach the Main Shield.

Lock point

Stand St Cover-R

Stand Fix Angle

Stand Assist Holder

Chassis Fix Angle

Brige Angle

Hook

Lock point

Hook

Main Shield

LC-46D62U/LC-52D62U

4 – 3

10.Disconnect all the connectors from all the PWBs.

11.Remove the 2 lock screws and detach the KEY PWB.

KEY PWB

Top Cover

LC-46D62U/LC-52D62U

4 – 4

12.Remove the 7 lock screws and detach the Tray Chassis.

13.Disconnect the 3 connectors (MA, FC, SA) , and COAXIAL Wire.

14.Remove the 2 lock screws , 3 lock screws and detach the Terminal Angle.

15.Remove the 7 lock screws and detach the POWER SUPPLY Unit.

16.Remove the 4 lock screws and detach the TERMINAL PWB.

17.Remove the 5 lock screws , rivet and detach the Heat Sink and MAIN PWB.

18.Disconnect the 2 connectors , and detach the Speaker-L and R.

19.Remove the 2 lock screws and detach the R/C, LED PWB.

Tray Chassis

POWER SUPPLY PWB

MAIN PWB

Heat Sink

TERMINAL PWB

Terminal Angle

Speaker-R

Speaker-L

R/C, LED PWB

MA FC SA

COAXIAL Wire

LC-46D62U/LC-52D62U

4 – 5

20.Remove the 4 lock screws and detach the LCD Panel Module.

21.Remove the 8 lock screws and detach the Chassis Fix Angle T/B.

Chassis Fix Angle T/B

LCD Panel Module

LC-46D62U/LC-52D62U

4 – 6

[2] REMOVING OF MAJOR PARTS (LC-52D62U)

1. Detach the SD Card Cover .

2. Remove the 4 lock screws and detach the Stand.

3. Remove the 5 lock screws .

4. Remove the 18 lock screws and detach the Rear Cabinet.

Rear Cabinet

Stand

SD Card Cover

LC-46D62U/LC-52D62U

4 – 7

5. Remove the 8 lock screws and detach the Brige Angle and Chassis Fix Angle.

6. Remove the 8 lock screws 8 lock point and detach the Stand St Cover-R

7. Remove the 4 hook and detach the Stand assist Holder.

8. Remove the 8 lock screws and detach the Stand Fix Angle.

9. Remove the 7 lock screws and detach the Main Shield.

Brige Angle

Main Shield

Brige Angle

Chassis Fix Angle

Stand St Cover-R

Stand Assist Holder

Stand Fix Angle

Lock point

Hook

LC-46D62U/LC-52D62U

4 – 8

10.Disconnect all the connectors from all the PWBs.

11.Remove the 2 lock screws and detach the KEY PWB.

KEY PWB

Top Cover

LC-46D62U/LC-52D62U

4 – 9

12.Remove the 7 lock screws and detach the Tray Chassis.

13.Disconnect the 3 connectors (MA, FC, SA) , and COAXIAL Wire.

14.Remove the 2 lock screws , 3 lock screws and detach the Terminal Angle.

15.Remove the 7 lock screws and detach the POWER SUPPLY Unit.

16.Remove the 4 lock screws and detach the TERMINAL PWB.

17.Remove the 5 lock screws , rivet and detach the Heat Sink and MAIN PWB.

18.Disconnect the 2 connectors , and detach the Speaker-L and R.

19.Remove the 2 lock screws and detach the R/C, LED PWB.

16 17

MAIN PWB

Heat Sink

Tray Chassis

POWER SUPPLY PWB

TERMINAL PWB

Terminal Angle

Speaker-R

Speaker-L

R/C, LED PWB

COAXIAL Wire

MA FC SA

LC-46D62U/LC-52D62U

4 – 10

20.Remove the 4 lock screws and detach the LCD Panel Module.

21.Remove the 8 lock screws and detach the Chassis Fix Angle T/B.

Chassis Fix Angle T/B

LCD Panel Module

LC-46D62U/LC-52D62U

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LC-46D62U

Service Manual

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE

The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following.

When replacing the following units, make sure to prepare the new units loaded with updated software.

MAIN Unit: DUNTKD934FM01 (LC-46D62U) / DUNTKD934FM02 (LC-52D62U)

2. Upgrading of each microprocessor software

CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.

Otherwise the system may be damaged beyond recovery.

2.1. Software version upgrade

The model employs the following software.

•Main software

• Monitor microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card.

The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.

2.2. Main software version upgrade

2.2.1 Get ready before you start

• SD memory card of 32MB or higher capacity

• PC running on Windows 98/98SE/ME/2000/XP operating system

• SD memory card reader/writer with USB connectivity

• SD memory card formatting software

(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)

2.2.2 Preparations

To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start. Follow the steps below and create the SD card for version upgrade.

1. Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format]. (When you have the drive options, select the drive where the SD card is inserted before you proceed.)

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2. When the formatting is over, the following window appears. Click [OK].

3. Click [Exit] to finish the formatting.

NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

4. Copy the binary image file DA60UAxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive.

NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade.

Now the SD card for version upgrade is ready.

2.2.3 Upgrading the software

1. Turn off the AC power (Unplug the AC power cord).

2. Insert the upgrading SD card (prepared as instructed above) into the service slot.

NOTE: Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.

3. Turn on the AC power (Plug in the AC power cord).

4. A couple to dozen seconds after the set starts, the upgrade screen below shows up.

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5. If any of the procedures fails, the following upgrade failure screen shows up. For the failing procedure, the “NG” marking turns red.

NOTE: In such case, try to upgrade the software again. If it still fails, the hardware may be in trouble.

6. When all the procedures are complete, the following upgrade success screen shows up. The new software version can be confirmed on screen. The version number appears when each item has been successfully upgraded. Finally the main version number appears on screen.

7. Turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card.

8. Now the software has been upgraded.

NOTE: Then get the set started and call the process adjustment screen 1/26 to check the main software version.

CAUTION: 1) Do not take out and put in the SD memory card during formatting.

2) With the SD formatted, all the data stored on the medium will be deleted.

3) Do not start the SD formatting with the memory card’s WRITE PROTECT switch still on.

4) If the SD memory card format software does not recognize the SD memory card, take out and put in the SD memory card again, and click the “UPDATE” button.

5) After checking the performance, use the set under its interface environment.

6) The SD formatting is impossible on drives that are not recognized “REMOVABLE”.

2.3. Upgrading the monitor microprocessor software

2.3.1 Kit

Have the above “Upgrading the main software” kit or equivalent at hand.

2.3.2 Preparations

As discussed in “Upgrading the main software” earlier, create the SD card for upgrading the monitor microprocessor software. For this SD card, use the monitor microprocessor upgrading binary image file.

2.3.3 Upgrading procedure

To follow the monitor microprocessor software upgrading, the monitor screen upgrade progress indicator and the flashing power LED indicator can be used.

1. Turn off the AC power (Unplug the AC power cord).

2. Insert the upgrading SD card (prepared as instructed above) into the service slot at the back of the set. Insert the SD card with its logo-printed face upward (visible). Be careful not to insert the SD card in the wrong way. Otherwise the card may come into the set and fail to come out.

3. Turn on the AC power (Plug in the AC power cord).

CAUTION: Now the monitor microprocessor software starts getting upgraded. Be very careful not to turn off the power while the software is being

upgraded. Otherwise the software will fail to upgrade itself and the set will fail to get started.

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4. A couple to dozen seconds after the set starts, the upgrade screen below shows up. The upgrade progress is indicated on screen. The power LED indicator goes out once and then starts flashing in blue. (It takes 2-3 minutes to get the monitor microprocessor software upgraded.)

5. If the procedure fails, the following upgrade failure screen shows up and the “NG” marking turns red. The power LED indicator fails to start flashing in blue. Even if the usual screen reappears in several seconds, do the procedure from Step “1” again.

NOTE: In case of failure, try to upgrade the software again. If it still fails, the hardware may be in trouble.

6. When the procedure is complete, the following upgrade success screen shows up. The new software version can be confirmed on screen. The upgrade success can also be confirmed when the power LED indicator and the OPC LED indicator start flashing alternately in blue and green, respectively. Double-check the upgrading and turn off the AC power (Unplug the AC power cord). Take out the upgrading SD card. Now the software has been upgraded.

Finally get the set started and call the process adjustment screen 1/27 to check the monitor microprocessor software version.

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3. Entering and exiting the adjustment process mode

1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.

2) While holding down the “VOL (–)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.

The letter “<K>” appears on the screen.

3) Next, hold down the “VOL (–)” and “CH ( )” keys at a time.

(The “VOL (–)” and “CH ( )” keys should be pressed and held until the display appears.)

Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode.

When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.

4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)

CAUTION: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the

settings are tampered in this mode, unrecoverable system damage may result.

4. Remote controller key operation and description of display in adjustment process mode

1) Key operation

*Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.

2) Description of display

Remote controller key Main unit key Function

CH ( / ) CH ( / )

Moving an item (line) by one (UP/DOWN) VOL (+/–) VOL (+/–) Changing a selected item setting (+1/ –1) Cursor (UP/DOWN) ————— Turing a page (PREVIOUS/NEXT) Cursor (LEFT/RIGHT) ————— Changing a selected line setting (+10/ –10) INPUT ————— Input switching (toggle switching)

(TUNER→INPUT1→INPUT2→INPUT3→INPUT4→INPUT5) ENTER ————— Executing a function

(3) Current selected input

(2) Current page title

(4) Current color system

(1) Current page/ (5) Destination

(6) LCD Panel size/Speaker type

Total pages

1/26 [INFO] INPUT5 AUTO USA 46_UNDER

MAIN Version 0.95 ( U 2006/02/02 1)

BOOT Version OLYM0.92

Monitor Version 0.88

EQ DATACHECKSUM ROM (8) Parameters

TEMPAERATURE 7B

LAMP ERROR 0

NORMAL STANDBY CAUSE

ERROR STANDBY CAUSE 1) 0 2) 0 3) 0

00H 00M 00H 00M 00H 00M

4) 0 5) 0 00H 00M 00H 00M

(7) Adjustment

process menu header

(LC-46D62U: 46_UNDER) (LC-52D62U: 52_UNDER)

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5. List of adjustment process mode menu

The character string in brackets [ ] will appear as a page title in the adjustment process menu header.

Page Line Item Description Remarks (adjustment detail, etc.)

1 [INFO]

1 MAIN Version Main software version 2BOOT Version 3 Monitor Version Monitor software version 4 EQ DATA CHECKSUM Audio data checksum 5 TEMPERATURE CPU temperature 6 LAMP ERROR Number of termination due to lamp error 7 NORMAL STANDBY CAUSE Refer to *1 under the list for details 8 ERROR STANDBY CAUSE Refer to *2 under the list for details

2 [INIT]

1 INDUSTRY INIT (Cause) 2 INDUSTRY INIT Initialization to factory settings . 3 HOTELMODE Hotel mode 4 Center Acutime Accumulated main operation time 5 RESET Reset 6 BacklightAcutime Accumulated monitor operation time 7 RESET Reset 8 LAMP ERROR RESET Reset LAMP ERROR

9 VIC XPOS X-coordinate setting for VIC READ 10 VIC YPOS Y-coordinate setting for VIC READ 11 VIC COLOR Collected color data setting for VIC READ 12 VIC SIGNAL TYPE Signal type setting for VIC READ 13 VIC READ Picture level acquisition function Level appears in green on the upper right.

3 [N358MAIN]

1 N358 ALL ADJ CVBS and TUNER signal level adjustment

2 N358 MAIN ADJ CVBS signal level adjustment

3 TUNER DAC ADJ TUNER signal level adjustment

4 N358 MAIN CONTRAST CVBS and TUNER contrast adjustment values

5 TUNER A DAC TUNER adjustment value

4 [TUNER TEST]

1 TUNER VCHIP TEST(69ch) Tuning test and VCHIP test (69 ch)

2 TUNER VCHIP TEST(7ch) Tuning test and VCHIP test (7 ch)

3 TUNER VCHIP TEST(10ch) Tuning test and VCHIP test (10 ch)

4 TUNER VCHIP TEST(15ch) Tuning test and VCHIP test (15 ch)

5 [COMP15KMAIN]

1 COMP15K MAIN ADJ Component 15K picture level adjustment (main)

2 COMP15K MAIN CONTRAST Contrast adjustment value

3 COMP15K MAIN Cb GAIN Cb GAIN adjustment value

4 COMP15K MAIN Cr GAIN Cr GAIN adjustment value

5 COMP15K Y OFFSET Y OFFSET adjustment value

6 COMP15K Cb GAIN Cb OFFSET adjustment value

7 COMP15K Cr GAIN Cr OFFSET adjustment value

6 [HDTV]

1 HDTV ADJ Component Hi-Vision picture level adjustment

2 CONTRAST Contrast adjustment value

3 Cb GAIN Cb GAIN adjustment value

4 Cr GAIN Cr GAIN adjustment value

5 HDTV Y OFFSET Y OFFSET adjustment value

6 HDTV Cb OFFSET Cb OFFSET adjustment value

7 HDTV Cr OFFSET Cr OFFSET adjustment value

7 [M GAMMA IN]

1 MONITOR GAMMA IN 1 Standard value 1(WBI10184) Adjustment gradation setting.

2 MONITOR GAMMA IN 2 Standard value 2(WBI20352)

3 MONITOR GAMMA IN 3 Standard value 3(WBI30528)

4 MONITOR GAMMA IN 4 Standard value 4(WBI40656)

5 MONITOR GAMMA IN 5 Standard value 5(WBI50800)

6 MONITOR GAMMA IN 6 Standard value 6(WBI60928)

7 GAMMA WRITE WB adjustment data writing

8 GAMMA RESET WB adjustment data reading

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8 [M GAMMA R1]

1 MONITOR GAMMA R 1 WB adjustment Point 1, R adjustment value Parameter for six-point adjustment

2 MONITOR GAMMA G 1 WB adjustment Point 1, G adjustment value

3 MONITOR GAMMA B 1 WB adjustment Point 1, B adjustment value

4 MONITOR GAMMA R 2 WB adjustment Point 2, R adjustment value

5 MONITOR GAMMA G 2 WB adjustment Point 2, G adjustment value

6 MONITOR GAMMA B 2 WB adjustment Point 2, B adjustment value

7 MONITOR GAMMA R 3 WB adjustment Point 3, R adjustment value

8 MONITOR GAMMA G 3 WB adjustment Point 3, G adjustment value

9 MONITOR GAMMA B 3 WB adjustment Point 3, B adjustment value 10 GAMMA WRITE WB adjustment data writing 11 GAMMA RESET WB adjustment data reading

9 [M GAMMA R4]

1 MONITOR GAMMA R 4 WB adjustment Point 4, R adjustment value Parameter for six-point adjustment

2 MONITOR GAMMA G 4 WB adjustment Point 4, G adjustment value

3 MONITOR GAMMA B 4 WB adjustment Point 4, B adjustment value

4 MONITOR GAMMA R 5 WB adjustment Point 5, R adjustment value

5 MONITOR GAMMA G 5 WB adjustment Point 5, G adjustment value

6 MONITOR GAMMA B 5 WB adjustment Point 5, B adjustment value

7 MONITOR GAMMA R 6 WB adjustment Point 6, R adjustment value

8 MONITOR GAMMA G 6 WB adjustment Point 6, G adjustment value

9 MONITOR GAMMA B 6 WB adjustment Point 6, B adjustment value 10 GAMMA WRITE WB adjustment data writing 11 GAMMA RESET WB adjustment data reading

10 [SOUND 1]

1 AUDIO SELECT

2 INPUT_TRIM_SP

3 INPUT_TRIM_HP

4 CLIPPER_LEVEL

5ANGLE

6 MASTER_VOLUME

7 SCART_PRESCALE

8 FM_AM_PRESCALE

9 I2S1_PRESCALE 10 SCART1_VOLUME 11 SCART2_VOLUME

11 [SOUND 2]

1 AIN1_ADC_VOLUME

2 AIN2_ADC_VOLUME

3 AIN3_ADC_VOLUME

4 AIN4_ADC_VOLUME

5 AIN5_ADC_VOLUME

6 AIN6_ADC_VOLUME

12 [SOUND 3]

1 SUB_VOLUME_SURROUND

2SUB_VOLUME_FLAT

3 SUB_VOLUME_EQ

4 SUB_VOLUME_HP

5 SUB_VOLUME_HP_CENTERSP

6 SUB_VOLUME_CENTERSP_EQ

7 SUB_VOLUME_CENTERSP_FLAT

8 BBE_HF_ADJUST

9 BBE_LEVEL 10 BBE_MACH3_F0 11 BBE_MACH3_Q 12 BBE_MACH3_GAIN

Page Line Item Description Remarks (adjustment detail, etc.)

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13 [SOUND 4]

1EQ_MODE

2 PEQ1_F0

3 PEQ1_Q

4 PEQ1_GAIN

5 PEQ2_F0

6 PEQ2_Q

7 PEQ2_GAIN

8 PEQ3_F0

9 PEQ3_Q 10 PEQ3_GAIN 11 PEQ4_F0 12 PEQ4_Q 13 PEQ4_GAIN

14 [SOUND 5]

1 PEQ5_F0

2 PEQ5_Q

3 PEQ5_GAIN

4 EALA_GAIN

15 [M OPC1]

1 BRIGHTNESS DA0

2 BRIGHTNESS DA1

3 BRIGHTNESS DA2

4 BRIGHTNESS DA3

5 BRIGHTNESS DA4

6 BRIGHTNESS DA5

7 BRIGHTNESS DA6

8 BRIGHTNESS DA7

9 BRIGHTNESS DA8 10 BRIGHTNESS DA9 11 BRIGHTNESS DA10 12 BRIGHTNESS DA11

16 [M OPC2]

1 BRIGHTNESS DA12

2 BRIGHTNESS DA13

3 BRIGHTNESS DA14

4 BRIGHTNESS DA15

5 BRIGHTNESS DA16

6 BRIGHTNESS DA17

7 BRIGHTNESS DA18

8 BRIGHTNESS DA19

9 BRIGHTNESS DA20 10 BRIGHTNESS DA21 11 BRIGHTNESS DA22

17 [M OPC3]

1 BRIGHTNESS DA23

2 BRIGHTNESS DA24

3 BRIGHTNESS DA25

4 BRIGHTNESS DA26

5 BRIGHTNESS DA27

6 BRIGHTNESS DA28

7 BRIGHTNESS DA29

8 BRIGHTNESS DA30

9 BRIGHTNESS DA31 10 BRIGHTNESS DA32

Page Line Item Description Remarks (adjustment detail, etc.)

+ 146 hidden pages

Sharp LC-52D62U,LC-46D62U Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual