Sharp LC45GD6U Service Manual

LC-45GD6U

SERVICE MANUAL

SY4B6LC45GD6U

LCD COLOR TELEVISION

MODEL

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.

OUTLINE

This model is based on the LC-45GD4U and is equipped with a redesigned speaker. This Service Manual covers the modifications alone. For the other points, refer to the LC-45GD4U Ser vice Manual.

CONTENTS

» LIST OF CHANGED PARTS ...........................................................................................................................2

» IMPORTANT SERVICE SAFETY PRECAUTION ........................................................................................3

» SPECIFICATIONS........................................................................................................................................6

» OPERATION MANUAL ................................................................................................................................7

» DIMENSIONS ............................................................................................................................................13

» REMOVING OF MAJOR PARTS................................................................................................................14

» PARTS LIST ...............................................................................................................................................20

» PACKING OF THE SET .............................................................................................................................27

LC-45GD6U

Page

SHARP CORPORATION

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

LC-45GD6U

LIST OF CHANGED PARTS

Ref.No. Description LC-45GD4U LC-45GD6U Note

PWB ASSEMBLIES

HDMI/DVI Unit DUNTKC267VJ59 DUNTKC267VJ60 No parts changed DIGITAL Unit DKEYDC307VJ37 DKEYDC307VJ38 No parts changed INVERTER-1 Unit DUNTKC471UJ05 DUNTKC471UJ06 No parts changed INVERTER-2 Unit DUNTKC472UJ05 DUNTKC472UJ06 No parts changed INVERTER-3 Unit DUNTKC473UJ05 DUNTKC473UJ06 No parts changed INVERTER-4 Unit DUNTKC474UJ05 DUNTKC474UJ06 No parts changed PC CARD Unit DUNTKC544VJ06  TOP LCD CONTROLLER Unit BOTTOM LCD CONTROLLER Unit MAIN Unit DUNTKD003VJ01 DUNTKD003VJ02 No parts changed DC/DC1 Unit DUNTKD004VJ01 DUNTKD004VJ02 No parts changed DC/DC2 Unit DUNTKD005UJ01 DUNTKD005UJ02 No parts changed AV Unit DUNTKD006VJ01 DUNTKD006VJ02 No parts changed

DUNTKD001UJ01 DUNTKD001UJ02 Parts changed DUNTKD002UJ01 DUNTKD002UJ02 No parts changed

AV SUB Unit DUNTKD007UJ01 DUNTKD007UJ02 No parts changed SP-T Unit DUNTKD008UJ01 DUNTKD008UJ02 Parts changed AC-INLET Unit DUNTKD009UJ01 DUNTKD009UJ02 No parts changed KEY_U Unit DUNTKD010UJ01 DUNTKD010UJ02 No parts changed R/C, LED Unit DUNTKD011UJ01 DUNTKD011UJ02 No parts changed POWER Unit RDENCA085WJZZ  1BIT AMP Unit B2SX4102BT 

LCD PANEL

45” Wide LCD Panel Unit RLCDTA030WJZZ 

TOP LCD CONTROLLER Unit

R2209 Metal Oxide VRS-CY1JF223JY VRS-CY1JF103JY  R2215 Metal Oxide  VRS-CY1JF223JY 

SP-T Unit

J203 Terminal, 4Pin QTANAA003WJZZ QTANAA004WJZZ 

CABINET AND MECHANICAL PARTS Please refer to a Parts list.

PACKING PARTS AND ACCESSORIES Please refer to a Parts list.

LC-45GD6U

IMPORTANT SERVICE SAFETY PRECA UTION

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

WARNING

» Use an AC voltmeter ha ving with 5000 ohm per v olt,

or higher, sensitivity or measure the A C voltage drop

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

2. Disconnect AC power before servicing.

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

A V

TYPE FUSE.

F7003 (2A, 250V),

F7004 (1A, DC 450V) F7301, F7302, F7401, F7402, F7501, F7502, F7601, F7602 (4A,250V) F7801 (8A, 250V)

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 necessar y, 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.

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

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

1. 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.

2. 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.

3. 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

TO EXPOSED METAL PARTS

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.

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DVM

AC SCALE

1.5k ohm 10W

0.15 µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

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 , w attage , etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features are identified by " å"

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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.

LC-45GD6U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

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

AVERTISSEMENT

de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une

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

2. Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE

A V

LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE

F7003 (2A, 250V),

F7004 (1A, DC 450V) F7301, F7302, F7401, F7402, F7501, F7502, F7601, F7602 (4A,250V) F7801 (8A, 250V)

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.)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

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

Tous les courants mesurés ne doivent pas dépasser

0.5 mA. Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

1. 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.

DVM

ECHELLE CA

2. 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

1.5k ohm 10W

et de compartiment, les réseaux de résistancecapacité, les isolateurs mécaniques, etc.

3. 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

0.15 µF

SONDE D'ESSAI

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 a vec un condensateur

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AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

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

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identifiées par la marque " å " 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.

LC-45GD6U

Precautions for using lead-free solder

1 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:

L Fa

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

2 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 ser vice branch in your area.

3 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, remov e 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 allo y ed 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

Part No, ★ Description Code ZHNDAi123250E J φ0.3mm 250g(1roll) BL ZHNDAi126500E J φ0.6mm 500g(1roll) BK ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM

LC-45GD6U

SPECIFICATIONS

Item 45"LIQUID CRYSTAL TELEVISION, Model: LC-45GD6U

LCD panel 45" Advanced Super View & BLACK TFT LCD Number of dots 6,220,800 dots (1920 × 1080 × 3 dots) TV

Function

Brightness 450 cd/m Viewing angles H : 170° V : 170° Audio amplifier 10W × 2 Speakers Ø 8cm 2pcs, Ø 2.5cm 2pcs Terminals

OSD language English/French/Spanish Power Requirement

Power Consumption Weight

• As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for pr oduct 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.

TV-standard (CCIR) Receiving

Channel

Audio multiplex BTSC System

Rear

Display only with Display and

speaker with Display, speaker

and stand

VHF/UHF CATV 1-125ch

Digital Terrestrial Broadcast (8VSB)

Digital cable (64/256 QAM)

INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 Audio in, DVI-I in with HDCP ANALOG ANTENNA DIGITAL ANTENNA MONITOR OUTPUT EXTERNAL SPEAKER

CENTER CHANNEL INPUT DIGITAL AUDIO OUTPUT

i.LINK PC CARD slot CableCARD slot

DC OUTPUT

American TV Standard ATSC/NTSC System VHF 2-13ch, UHF 14-69ch

2-69ch

1-135ch

AV in, COMPONENT in AV in, COMPONENT in

S-VIDEO in, AV in

HDMI in (Type-A) with HDCP

75 Ω Unbalance, F Type for VHF/UHF/CATV in × 2, out × 1 75 Ω Unbalance, F Type for Digital Air/Cable in × 1 S-VIDEO out, AV out 4 Ω 10W (L/R)

RCA pin Optical Digital audio output × 1 (PCM/Dolby Digital)

IEEE1394 × 2 with DTCP 68 pin PCMCIA × 1 68 pin PCMCIA × 1

DC 9 V 7 W MAX

AC 120 V, 60 Hz 330 W (13.4 W Standby with AC 120 V)

60.6 lbs./27.5 kg

71.7 lbs./32.5 kg

80.5 lbs./36.5 kg

Part names

Display

Part names

POWER indicator

OPC sensor

POWER

button

INPUT

button

VOLUME buttons

(VOL / )

CHANNEL buttons

(CH / )

Remote control sensor

OPC indicator

CARD indicator

* OPC: Optical Picture Control

* Press RESET if the TV cannot return to its original

state after performing various operations.

• AV MODE resets to DYNAMIC (Fixed)

• TV channel returns to initial channel (Air:2ch, Cable:1 or 2ch)

• Twin picture resets to normal

• Audio setting initializes

• Dolby virtual resets to off

• Image position initializes

**Press SYSTEM RESET if the TV does not operate after starting up.

NOTE

• Pressing RESET will not work if the TV is in standby mode.

• Pressing RESET will not delete channel preset or secret number.

RESET*

INPUT 3

terminals

SYSTEM RESET**

ANALOG A IN terminal

ANALOG B IN terminal

ANALOG A OUT terminal

DC OUTPUT terminal

(Terminal for expanded functionality in the

near future.)

EXTERNAL

SPEAKER terminals

AC INPUT

terminal

RS-232C

terminal

INPUT 2 terminals

INPUT 1

terminals

INPUT 5

terminals

INPUT 4 terminal

DIGITAL

AUDIO

OUTPUT

terminal

CENTER

CHANNEL

INPUT

terminal

MONITOR OUTPUT

terminals

i.LINK

terminals

CableCARD

slot

DIGITAL IN

terminal

OPERATION MANUAL

LC-45GD6U

Part names

Remote control unit

Where to place the TV

Preparation

117

824

925

10 26

11 28

1TV POWER: Switches the Liquid Crystal Television

power on or Standby.

2 DISPLAY: Displays the channel information.

3 SOURCE POWER: Turns the power of the external

equipment on and off.

4 External equipment operational buttons: Operates

the external equipment.

50 – 9: Sets the channel.

6 A-ANALOG-B: Each button selects the corresponding

antenna.

7VOL /: Sets the volume.

8 CARD: Switches to card mode.

9 INFO: Displays the program information screen.

Virtual: Selects Virtual Dolby Surround settings.

11 EXIT: Turns off the menu screen.

12 SELECT: Selects the active screen.

13 TWIN PICTURE: Sets the twin picture mode.

Press again to return to normal screen.

14 SLEEP: Sets the sleep timer.

15 AUDIO: Selects the MTS/SAP or the audio mode during

multi-channel audio broadcasts.

16 i.LINK: Displays the i.LINK panel.

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

SAT, VCR, DVD and AUDIO operation. Indicator lights

up for the current mode.

: When pressed all buttons on the r emote 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.

19 VIEW MODE: Selects the screen size.

20 FLASHBACK: Returns to the previous channel or input

external mode.

21 INPUT: Selects a Liquid Crystal Television input source.

(TV, INPUT 1, INPUT 2, INPUT 3, INPUT 4, INPUT 5,

i.LINK, Card)

22 DIGITAL: Receives digital broadcasts.

23 CH / : Selects the channel.

24 MUTE: Mutes the sound.

25 CH LIST: Displays the channel list screen.

26 MENU: Displays the menu screen.

27 ////ENTER: Selects a desired item on the

screen.

28 RETURN: Returns to the previous menu screen.

29 FAVORITE CH

A, B, C, D: Selects four preset favorite channels in four

different categories.

While watching, you can toggle the selected channels

by pressing A, B, C and D.

30 FREEZE: Sets the still image. Press again to return to

normal screen.

31 CC: Displays captions during closed-caption source.

32 EDIT: Registers favorite channel.

33 AV MODE: Selects an audio or video setting.

(AV mode: STANDARD, MOVIE, GAME,

USER, DYNAMIC (Fixed), DYNAMIC. PC mode:

STANDARD, USER.)

• When using the remote control unit, point it at the Liquid

Crystal Television.

Setting the TV in place

Handling the Display

CAUTION

• Do not remove the stand and speaker from the Display unless

using an optional bracket to mount it.

• Keep enough space above and behind the Display.

• When you move the TV, carry it by two or more people.

• When you move the Display, hold the side portion of the Display,

not the speaker.

First select the location where to place the TV.

Selecting the location of the TV

• Select a place with good ventilation.

Display

4 inches

(10 cm)

or more

CAUTION

Adjust the screen with both

hands. Put one hand on the

Display and rotate the

screen while steadying the

stand with your other hand.

Please note that you cannot

adjust the screen vertically

with this model.

LC-45GD6U

Preparation

Setting the TV

Removing speakers

Display (rear view)

After putting the Display in place, connect the AC cord. Use the cable clamp for bundling the cables.

Connecting the AC cord to the Display

Removing the terminal cover

Bundling the cables with the clamp

CAUTION

• TO PREVENT RISK OF ELECTRIC SHOCK, DO NOT TOUCH UN-INSULATED PARTS OF ANY CABLES WITH THE

AC CORD CONNECTED.

Press down the hooks

to remove the cover

toward you.

AC cord (with

Ferrite core)

Cable clamp

Insert the cable clamp in the hole on the Display as shown.

NOTE

• To attach the speakers, perform the steps in reverse order.

CAUTION

• Do not remove the stand and speaker from the Display unless using an optional bracket to mount it.

• Before performing work spread cushioning over the base area to lay the Display on. This will prevent it from

being damaged.

Unfasten the screw used to secure the speaker

bracket.

Unfasten the screws.

Take off the speaker terminal cover.

Disconnect the cable from the speaker.

+ 19 hidden pages