SHARP LC45GD7U Service Manual

LC-45GD7U

SERVICE MANUAL

SY5Q4LC45GD7U

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-45GD5U and is equipped with a redesigned speaker. This Service Manual
covers the modifications alone. For the other points, refer to the LC-45GD5U Ser vice Manual.

CONTENTS

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

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

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

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

» DIMENSIONS ............................................................................................................................................14

» REMOVING OF MAJOR PARTS................................................................................................................15

» PARTS LIST ...............................................................................................................................................18

» PACKING OF THE SET .............................................................................................................................23

LC-45GD7U

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-45GD7U

LIST OF CHANGED PARTS

Ref.No. Description LC-45GD5U LC-45GD7U Note

PWB ASSEMBLIES

AC INPUT Unit DUNTKD154VJ03 
DIGITAL TUNER Unit DKEYDD392VJ12 DKEYDD392VJ11 No parts changed
MAIN Unit DUNTKD393VJ03 DUNTKD393VJ02 Some parts changed
AV Unit DUNTKD405UJ02 DUNTKD405UJ01 No parts changed
KEY Unit DUNTKD406UJ02 DUNTKD406UJ01 No parts changed
R/C, LED Unit DUNTKD407UJ02 DUNTKD407UJ01 Some parts changed
SPEAKER TERMINAL-L Unit DUNTKD408UJ02 DUNTKD408UJ01 No parts changed
SPEAKER TERMINAL-R Unit DUNTKD409UJ02 DUNTKD409UJ01 No parts changed
BUS CONNECT Unit DUNTKD410UJ02 DUNTKD410UJ01 No parts changed
POWER SUPPLY Unit RDENCA142WJQZ 

LCD PANEL

45” Wide LCD Panel Unit RLCUCA015WJZZ 

MAIN Unit

R2369 Metal Oxide  VRS-CY1JF223JY *Add
R2370 Metal Oxide VRS-CY1JF223JY  *Delete

R/C, LED Unit

J2401 Jack QJAKJA014WJZZ QJAKJA009WJSA *Change

CABINET AND MECHANICAL PARTS
Please refer to a Parts list.

PACKING PARTS AND ACCESSORIES
Please refer to a Parts list.

2

LC-45GD7U

2

2

2

2

IMPORTANT SERVICE SAFETY PRECA UTION

Ë

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.

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

A V

CAUTION:

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

F7003 (2A, 250V),

F7801 (8A, 250V)

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

and shaded areas in the

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.

components having such features are identified by "å"

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3

Replacement Parts List

and

LC-45GD7U

2

2

2

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ë

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.

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

A V

PRECAUTION:

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

F7003 (2A, 250V),

F7801 (8A, 250V)

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 v ec 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

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.

4

liste

LC-45GD7U

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

5

LC-45GD7U

SPECIFICATIONS

Item Model: LC-45GD7U

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

Function

TV-standard (CCIR)
Receiving

Channel

VHF/UHF

CATV 1-125ch

Digital Terrestrial
Broadcast (8VSB)

Digital cable
(64/256 QAM)

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

2-69ch

1-135ch

×

Audio multiplex BTSC System

Brightness 450 cd/m

2

Backlight Life 60,000 hours (at Backlight Standard position)
Viewing angles H : 170
Audio out 10W 2

Terminals

Rear

INPUT 1
INPUT 2

INPUT 3
INPUT 4

AV in, COMPONENT in
AV in, COMPONENT in

S-VIDEO in, AV in

HDMI in (Type-A) with HDCP

o

×

V : 170

o

INPUT 5 Audio in, DVI-I in with HDCP

Front

ANALOG ANTENNA
DIGITAL ANTENNA
MONITOR/REC OUT

G-LINK

DIGITAL AUDIO OUTPUT
i.LINK
CableCARD slot 68 pin PCMCIA 1
Headphones

75 Unbalance, F Type for VHF/UHF/CATV in 1

Ω
Ω

75 Unbalance, F Type 2 (for Digital Air 1/Digital Cable in 1)
S-VIDEO out, AV out

3.5mm jack

Optical Digital audio output 1 (PCM/Dolby Digital)
IEEE1394 2 with DTCP

×

×

3.5mm jack

OSD language English/French/Spanish/Portuguese

Power Requirement

Power Consumption

Weight

TV only

TV with speaker

TV with speaker and stand

Dimension

×

×

(W H D) (in inches)

Accessories Operation manual ( 1), Remote control unit ( 1), AC cord ( 1), "AAA" size

Operating temperature 32

AC 120 V, 60 Hz for North America
AC 110 240 V, 50/60Hz for others

_

300 W

60.6 lbs./27.5 kg

68.3 lbs./31.0 kg

79.4 lbs./36.0 kg

×

439/64 311/2 1131/32 (TV stand speaker)

××

439/64 311/2 1131/32 (TV stand)

××

439/64 293/64 431/64 (TV speaker)

9

×

43

/64 2525/32 431/64 (TV only)

×

×

×

battery ( 2), Cable clamp ( 1), G-LINK cable ( 1), Cable tie ( 1)

++ +

×× ××

o

F to 104oF (0oC to 40oC)

×

×

××

×

×

++
+

+

××

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.

6

Part names

TV (Front)

TV (Rear)

POWER button

INPUT button*

Volume buttons (VOL / )

Channel

buttons**

(CH / )

* INPUT button works as

ENTER in TV Guide On

Screen

** Channel buttons work as

/ in TV Guide On

Screen

POWER indicator

OPC sensor

Remote control sensor

OPC indicator

DL indicator

SLEEP indicator

Headphone jack

* 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)

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.

INPUT 2

terminals

MONITOR OUT/

REC OUT terminals

i.LINK terminals

CableCARD

TM

slot

G-LINK terminal

DIGITAL AIR

IN terminal

RESET*

INPUT 3

terminals

SYSTEM

RESET**

ANALOG IN

terminal

AC INPUT terminal

RS-232C terminal

INPUT 1

terminals

INPUT 5 terminals

INPUT 4 terminal

DIGITAL AUDIO

OUTPUT terminal

DIGITAL

CABLE IN

terminal

LC-45GD7U

OPERATION MANUAL

7

LC-45GD7U

P Using external equipmentart names

Remote control unit

2

3

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

117

4

5

6

7

8

9

11

12

13

14

15

16

10

6AIR: Receives air signal.

7 CABLE: Receives cable signal.

8VOL /: Sets the volume.

9

Virtual: Selects Virtual Dolby Surround settings.

10 INFO:

Displays the program information screen.

11 RECORD:

Records the program to equipment (capable of

recording).

In TV Guide On Screen, initiates the recording process.

12 EXIT: Turns off the menu screen and TV Guide On

Screen.

13 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.

DAY /DAY : In TV Guide On Screen, moves forward

or backward in 24 hour increments in the listing grid.

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

multi-channel audio broadcasts.

15 SLEEP: Sets the sleep timer.

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.

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

FUNCTION and DISPLAY at the same time.

18 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.

19 VIEW MODE: Selects the screen size.

20 ENT: Enters a channel selection when choosing with

the 0-9 buttons.

21 FLASHBACK: Returns to the previous channel or

external input mode.

22 INPUT: Selects a Liquid Crystal Television input source.

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

INPUT 5, i.LINK)

If the CableBox is set up in the TV Guide On Screen

setting menu, the CableBox option appears.

23 CH / : Selects the channel.

In the TV Guide On Screen, moves one page up or one

page down in the LISTINGS grid.

24 MUTE: Mutes the sound.

25 TV GUIDE: Displays TV Guide On 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 FREEZE: Sets the still image. Press again to return to

normal screen.

30 CC: Displays captions when receiving closed-caption

signals.

31 EDIT: Registers favorite channel.

32 AV MODE: Selects an audio or video setting.

(AV mode: STANDARD, MOVIE, GAME,

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

STANDARD, USER.)

1TV POWER: Switches the Liquid Crystal Television

power on or enters Standby mode.

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.

5 0 9/ (DOT): Sets the channel.

_

You can connect many types of external equipment to your TV, like a DVD player, VCR, Digital TV tuner, PC,

HDMI equipment, game console and camcorder. To view external source images, select the input source from

INPUT on the remote control unit or on the TV.

CAUTION

To protect all equipment, always turn off the TV before

connecting to a DVD player, VCR, Digital TV tuner, PC,

HDMI equipment, game console, camcorder or other

external equipment.

NOTE

Please refer to the relevant operation manual (DVD player,

PC, etc.) carefully before making connections.

Each time INPUT is pressed, the input source toggles.

Refer to your external equipment operation manual for

the signal type.

Displaying an external equipment image

Explanation here is for the setting when connecting

DVD to INPUT1 terminal.

To watch a DVD image, select "INPUT1" fr

om "INPUT

SOURCE" menu using INPUT on the remote control

unit or on the TV.

INPUT SOURCE

TV

CableBox [TV]

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5INPUT5

i.LINK

1

MENU

[

Option

...

Input Select

]

Auto

COMPONENT

VIDEO

For INPUT1 signal

Select the desired signal type.

The setting is stored and can be selected on the

"INPUT SOURCE" menu.

Press MENU and the MENU screen displays.

2

3

Press / to select "Input Select", and then

press ENTER.

4

Press / to select "Option".

MENU

[

Option

...

Input Select

]

Option

Input Select

Digital Noise Reduction

Output Select

Audio Only

Quick Shoot

[Fixed]

[Auto]

[Low]

[Off]

Caption Setup

Program Title Display

[No]

NOTE

If the image does not come in clearly, you may need to

change the input signal type setting on the "Input Select"

menu.

Selecting the INPUT signal

8