Sharp LC-70LE745U, LC-60LE745U Schematic

TopPage

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

SERVICE MANUAL

No. S12V760LE745U

LCD COLOR TELEVISION

LC-60LE745U,C7450U
LC-60LE845U,C8470U
LC-60LE847U
LC-70LE745U,C7450U
LC-70LE845U,C8470U

MODELS

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 spec if ied sho uld be used .

LC-70LE847U

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

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

PRECAUTIONS A PRENDRE LORS DE

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

PRECAUTIONS FOR USING LEAD-FREE

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

OUTLINE

MAJOR SERVICE PARTS............... .... .............iv

CHAPTER 1. SPECIFICATIONS

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

CHAPTER 2. OPERATION MANUAL

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

CHAPTER 3. DIMENSIONS

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

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS (LC-

60LE745U,C7450U)....................................... 4-1

[2] REMOVING OF MAJOR PARTS (LC-

70LE745U,C7450U)....................................... 4-7

[3] The location putting on the heat measure

sheet............................................................4-13

[4] Precautions for assembly ............................4-14

CHAPTER 5. ADJUSTMENT

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

[2]

PUBLIC MODE SETTING PROCEDURE

CHAPTER 6. TROUBLESHOOTING TABLE

[1]

Failure diagnosis by LED in front of cabinet

[2] LED flashing specification at the time of an

error (Center icon LED used) ........................6-1

[3] TROUBLESHOOTING TABLE ......................6-5

CHAPTER 7. MAJOR IC INFORMATIONS

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

CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK
DIAGRAM

[1] OVERALL WIRING DIAGRAM (LC-

60LE745U,C7450U) ......................................8-1

[2] OVERALL WIRING DIAGRAM (LC-

70LE745U,C7450U) ......................................8-2

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

Parts Guide

.......5-15

.........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.

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

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

SAFETY PRECAUTION

ServiceManual

IMPORTANT SERVICE SAFETY PRECAUTION

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

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

2. Disconnect AC power before servicing.

CAUTION: FO R C O N T I N U E D PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE.

F7001 (250V 5A)

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.

DVM

AC SCALE

1.5k ohm
10W

0.15µF

TEST PROBE

TO EXPOSED
METAL PARTS

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, 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.

i

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

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

1.

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

2.

Débrancher le récepteur avant toute réparation.

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

F7001 (250V 5A)

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.

VERIFICATIONS CONTRE L'INCEN-DIE ET LE
CHOC ELECTRIQUE

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

3.

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.

4.

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.

5.

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).

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

AUX PIECES
METALLIQUES
EXPOSEES

DVM

ECHELLE CA

1.5k ohm
10W

µ

F

0.15

SONDE D'ESSAI

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 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.

ii

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

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:

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

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

PARTS CODE

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

PRICE
RANK

PART

DELIVERY

DESCRIPTION

iii

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

OUTLINE

ServiceManual

MAJOR SERVICE PARTS

PWB Unit

No. PARTS CODE DESCRIPTION

N DKEYMF953FM01 MAIN Unit
N DUNTKF800FM53 KEY Unit
N DUNTKF975FM04 LCD CONTROL Unit (LC-60/70LE745, 60/70C7450)
N DUNTKF961FM02 LCD CONTROL Unit (LC-60LE845/847/C8470)
N DUNTKF961FM01 LCD CONTROL Unit (LC-70LE845/LE847/C8470)
N DUNTKG014FM02 ICON Unit
N DUNTKG015FM02 R/C OPC Unit
N DUNTKG017FM01 3D-IR Unit
N RUNTKA936WJQZ Wi-Fi UNIT
N RUNTKA934WJQZ POWER UNIT (LC-60LE745/845/847/C7450/C8470)
N RUNTKA935WJQZ POWER/DRIVER UNIT (LC-70LE745/845/847/C7450/C8470)
N RUNTKA944WJZZ S-LED Unit A, x2 (LC-60LE745/C7450)
N RUNTKA966WJZZ S-LED Unit A, x2 (LC-60LE845/847/C8470)
N RUNTKA945WJZZ S-LED Unit B, x2 (LC-60LE745/C7450)
N RUNTKA967WJZZ S-LED Unit B, x2 (LC-60LE845/847/C8470)
N RUNTKA943WJZZ S-LED Unit, x6 (LC-70LE745/C7450)
N RUNTKA965WJZZ S-LED Unit, x6 (LC-70LE845/LE847U/C8470)

NOTE: *1 Replace MAIN PWB Units (DKEYMF953FM01) in case of IC3103 failure.

OTHER Unit

No. PARTS CODE DESCRIPTION

N CLCDTA256WE01 60" LCD Panel Module Unit (LC-60LE745/C7450)
N CLCDTA256WE03 60" LCD Panel Module Unit (LC-60LE845/847/C8470)
N CLCDTA255WE01 70" LCD Panel Module Unit (LC-70LE745/C7450/847)
N CLCDTA255WE03 70" LCD Panel Module Unit (LC-70LE845/LE847/C8470)
N R1LK600D3HB70Z 60" Panel Unit (LC-60LE745/C7450) (LK600D3HB70Z)
N R1LK600D3HB80Z 60" Panel Unit (LC-60LE845//847/C8470) (LK600D3HB80Z)
N R1LK695D3GV00E 70" Panel Unit (LC-70LE745/C7450) (LK695D3GV00E)
N R1LK695D3GV00D 70" Panel Unit (LC-70LE845/70LE847/C8470) (LK695D3GV00D)

IC For Exclusive Use Of The Service

No. PARTS CODE DESCRIPTION Q'ty

IC2004 RH-iXD241WJNUQ IC (Monitor Microprocessor) 1

Service Jigs

No. PARTS CODE DESCRIPTION Q'ty

N QCNW-C222WJQZ Connecting Cord L=1000mm 80pins, LCD Control Unit to LCD Panel Unit 2
N QCNW-M580WJQZ Connecting Cord L=1000mm 41pins, Main to LCD Control Unit (LV) 1
N QCNW-M539WJQZ Connecting Cord L=1000mm 24pins, Main to POWER Unit (PD) 1

iv

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

CHAPTER 1. SPECIFICATIONS

ServiceManual

[1] SPECIFICATIONS

LC-70845U/847U/C8470U

LC-60845U/847U/C8470U

1 – 1

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

ServiceManual

2 – 1

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

2 – 2

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

LC-70LE745U/C7450U/845U/847U/C8470U LC-60LE745U/C7450U/845U/847U/C8470U

2 – 3

/845U/847U/C8470U

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

CHAPTER 3. DIMENSIONS

ServiceManual

[1] DIMENSIONS

LC-70LE745U/C7450U/845U/847U/C8470U

LC-60LE745U/C7450U/845U/847U/C8470U

3 – 1

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

CHAPTER 4. REMOVING OF MAJOR PARTS

ServiceManual

[1] REMOVING OF MAJOR PARTS (LC-60LE745U,C7450U,845U,847U,C8450U)

1. Removing of Stand Unit and Rear Cabinet Ass’y.

1. Remove the 2 lock screws and detach the Stand Cover .

2. Remove the 4 lock screws and detach the Stand Base Ass’y .

3. Remove the 1 lock screw and detach the AC Cord Cover .

4. Disconnect AC Wire and detach the AC Cord .

5. Remove the 4 VESA Covers , 5 lock screws , 18 lock screws and 11 lock screws and detach the Rear Cabinet Ass’y .

12Rear Cabinet Ass'y

11

10

AC Cord Cover

7AC Cord

9

6

5

2Stand Cover

3

[AC]

8

VESA
Cover

10

9

10

1

4 Stand Base Ass'y

4 – 1

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

Pus h

Pus h

Pus h

Pus h

CAUTION

Set it so that there may not be a clearance between Front Cabinet Ass'y and Rear Cabinet Ass'y.

[Precautions for assembly]

4 – 2

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

2. Removing of Bottom Cover Ass’y, Speaker Unit (Woofer),Speaker Unit (L/R) and KEY Unit.

1. Remove the 2 lock screws and detach the Bottom Cover Ass’y .

2. Detach the Speaker Unit (Woofer) .

3. Disconnect the SB wire.

4. Remove the 2 lock screws and detach the KEY Unit Ass’y .

5. Disconnect the KM wier.

6. Detach the KEY Unit from Key Buttom .

7. Detach the Speaker Unit (L/R) .

8. Disconnect the SP wire.

3Speaker Unit (Woofer)

[SB]

[SP]

[SP]

[SB]

64KEY Unit

[KM]

7

8 Speaker Unit (L/R)

21Bottom Cover Ass'y

5

KEY Unit
Ass'y

Key Button

4 – 3

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

3. Removing of Connectors

1. Disconnect the following connectors from the MAIN Unit. (PD, LV, RA, UB)

2. Disconnect the following connectors from the LCD CONTROL Unit. (PL, LV)

3. Disconnect the following connectors from the POWER Unit. (PD, L1)

4. Disconnect the following connectors from the S-LED Unit A/B (L1) of LCD Panel Module Unit.

LCD Panel
Module Unit

POWER Unit LCD CONTROL Unit

[L1]

[L1]

[PD]

[PL]

[LV]

[L1]

MAIN Unit

[PD]

MAIN Unit

[L1]

[L1]

[LV]

[RA]

[UB]

4 – 4

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

4. Removing of POWER Unit, MAIN Unit, LCD CONTROL Unit.

1. Remove the 6 lock screws and detach the POWER Unit .

2. Detach the Power Insulation .

3. Remove the 3 lock screws and detach the Side Terminal Angle and the Terminal Angle Width .

4. Remove the 5 lock screws and detach the MAIN Unit .

5. Remove the 6 lock screws , 2 Ferrite Cores and the LCD CONTROL Unit .

1

5Side Terminal Angle

4

7

2POWER Unit

8MAIN Unit

9

11 LCD

3Power Insulation

CONTROL
Unit

4

10 Ferrite Core

6

Terminal Angle
Width

4 – 5

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

5. Removing of 3D-IR Unit, R/C OPC Unit, Wi-Fi Unit, ICON Unit, Decoration Cover Ass’y.

1. Remove the 9 lock screws and detach the Decoration Cover Ass’y .

2. Detach the 3D-IR Unit .

3. Disconnect the IR wire.

4. Detach the R/C OPC Unit .

5. Disconnect the RA wire.

6. Detach the Wi-Fi Unit .

7. Disconnect the UB wire.

8. Detach the ICON Unit .

9. Disconnect the CI wire.

10.Remove the 12 lock screws and detach the 2 Stand Angles .

11.Remove the 6 lock screws , 12 lock screws and detach the 2 Center Angle Ass’ys .

Stand Angle

10

9

9

10

11 Center Angle Ass'y

7

11Center Angle Ass'y

8

9

7

Stand Angle

8

9

Cover
Ass'y

2Decoration

1

[IR]

[RA]

3 3D-IR Unit

[CI]

[UB]

5 Wi-Fi Unit

4 R/C OPC Unit

6 ICON Unit

4 – 6

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

[2] REMOVING OF MAJOR PARTS (LC-70LE745U,C7450U,845U,847U,C8450U)

1. Removing of Stand Unit and Rear Cabinet Ass’y.

1. Remove the 2 lock screws and detach the 2 Stand Covers .

2. Remove the 4 lock screws and detach the Stand Base Ass’y .

3. Remove the 1 lock screw and detach the AC Cord Cover .

4. Disconnect AC wire and detach the AC Cord .

5. Remove the 4 VESA Covers , 11 lock screws , 9 lock screws and 17 lock screws and detach the Rear Cabinet Ass’y .

12Rear Cabinet Ass'y

9

11

VESA Cover

7AC Cord

6AC Cord Cover

5

8

[AC]

3

2Stand Cover

11

11

4 Stand Base Ass'y

10

1

4 – 7

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

Pus h

Pus h

Pus h

Pus h

Pus h

Pus h

Pus h

Pus h

[Precautions for assembly]

CAUTION

1. Set it s o that there m ay not be a clearance between CAB-A and CAB-B.

4 – 8

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

2. Removing of Bottom Cover and KEY Unit.

1. Remove the 1 lock screw and detach the KEY Unit Ass’y .

2. Disconnect the KM wire.

3. Detach the KEY Unit from Key Button .

4. Detach the 2 Bottom Covers .

3 KEY Unit

1

[KM]

4 Key Button

2

5 Bottom Cover

KEY Unit
Ass'y

4 – 9

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

3. Removing of Connectors

1. Disconnect the following connectors from the MAIN Unit. (PD, SB, SP, LV, RA, UB)

2. Disconnect the following connectors from the LCD CONTROL Unit. (PL, LV)

3. Disconnect the following connectors from the POWER Unit. (PD, L1)

4. Disconnect the following connectors from the S-LED Unit (L1) of LCD Panel Module Unit.

LCD Panel
Module Unit

POWER Unit LCD CONTROL Unit

[L1]

[L1]

[L1]

[PD]

[PL]

[LV]

[L1]

[L1]

MAIN Unit

[PD]

[SB]

[SP]

[LV]

MAIN Unit

[L1]

[L1]

[RA]
[UB]

4 – 10

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

4. Removing of Speaker Unit (Woofer), LCD CONTROL Unit, MAIN Unit, POWER/DRIVE Unit.

1. Detach the Speaker Unit (Woofer) .

2. Disconnect the SB wire.

3. Remove the 2 Ferrite Cores , 6 lock screws and detach the LCD CONTROL Unit .

4. Remove the 6 lock screws and detach the POWER/DRIVER Unit .

5. Detach the Power Insulation .

6. Remove the 3 lock screws and detach the side Terminal angle and the Terminal Angle Width .

7. Remove the 5 lock screws and detach the MAIN Unit .

1Speaker Unit (Woofer)

Side Terminal

6

Angle

10

9

DRIVER
Unit

Insulation

[SB]

5 LCD

7POWER/

CONTROL

12

13MAIN Unit

Unit

4

8Power

Ferrite

3

9

Core

11 Terminal

Angle
Width

4 – 11

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

5. Removing of Decoration Cover Ass’y, 3D-IR Unit, R/C OPC Unit, Fi-Fi Unit, ICON Unit, Speaker Unit (L/R),

Center Angle Ass’y.

1. Remove the 9 lock screws and detach the Decoration Cover Ass’y .

2. Detach the 3D-IR Unit .

3. Disconnect the IR wire.

4. Detach the R/C OPC Unit .

5. Disconnect the RA wire.

6. Detach the Wi-Fi Unit .

7. Disconnect the UB wire.

8. Detach the ICON Unit .

9. Disconnect the CI wire.

10.Detach the Speaker Unit (L/R) .

11.Disconnect the SP wire.

12.Remove the 12 lock screws and detach the 2 Stand Angles .

13.Remove the 8 lock screws , 20 lock screws , and detach the 2 Center Angle Ass’ys .

Stand Angle

Cover
Ass'y

10

11

10

11

12 Center Angle Ass'y

12Center Angle Ass'y

8

9

10

8

9

10

Stand Angle

2Decoration

[SP]

[UB]

[CI]

6 ICON

Unit

[RA]

4R/C

OPC
Unit

5 Wi-Fi

Unit

7 Speaker Unit (L/R)

4 – 12

[IR]

3 3D-IR Unit

1

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

Base line
carved line

PSPA Z C8 5 4 WJ K Z

[3] The location putting on the heat measure sheet

1. MAIN PWB Unit

2. LCD CONTROL Unit (for LC-60/70LE845/847/C8470)

4 – 13

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

(1) Prepare***
LANGKD145WJFW
SIDETERMINALANG

(2) Stick***
PSPAZC690W JZZ
CONDUCTR:8x255

(1) Prepare***
LANGKD146WJFW
TERM ANG W IDTH

(2) Stick***
PSPAZC691WJZZ
CONDUCTR:8x180

[4] Precautions for assembly

1. Points to be checked and precautions when servicing the unit

Mount the main PWB Ass’y on the backlight chassis and check that the EMI-prevention parts are not peeled and twisted from the access holes. (The
EMI-prevention parts, conductive nonwoven fabric gaskets, must be seen from the access holes.)

[Countermeasure]
Attach the conductive nonwoven fabric gaskets on the shielded case on the main PWB.

4 – 14

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)

The following is a drawing mounting the main PWB Ass’y on the backlight chassis. (The parts indicated by -> are the access holes for confirmation.)
(Main PWB Ass’y => State where the shielded case and RF terminal angle are mounted on the main PWB)

4 – 15

LC-60/70LE745U,C7450U,LE845U,C8470U,LE847U (1st Edition)



LC60LE745U

CHAPTER 5. ADJUSTMENT

ServiceManual

[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: DKEYMF953FM01

• When replacing the LCD control PWB, perform the VCOM adjustment.

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 (please use a software version after BSMK_632-732_xxx.USB).

• Monitor microprocessor software (please use a software version after BMSDMxxx.SMB.)

The main software, monitor microprocessor software can be upgraded by using a general-purpose USB Memory.
The followings are the procedures for upgrading, explained separately for the main software, monitor microprocessor software.

2.2. Main software version upgrade

2.2.1 Get ready before you start

• USB Memory of 128MB or higher capacity.

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

• USB Memory reader/writer or PC with a USB port.

• The file system of a USB memory is FAT. (FAT32 supports)

• Use the USB memory without other functions. (lock and memory reader...etc)

2.2.2 Preparati on s

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

1. Copy the file BSMK_632-732_xxx.USB for version upgrade to the root directory (folder) of the USB Memory.

NOTE: In the USB Memory drive, do not store other folders or unrelated files, or more than one file for version upgrade.

Now the USB Memory for version upgrade is ready.

5 – 1