Sharp LC-80LE632U Service manual

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LC-80LE632U(A)

SERVICE MANUAL

No. S62W880LE632A

LCD COLOR TELEVISION

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 specified should be used.

LC-80LE632U(A)

CONTENTS

SAFETY PRECAUTION OUTLINE CHAPTER 1. SPECIFICATIONS

CHAPTER 2. OPERATION MANUAL

CHAPTER 3. DIMENSIONS

CHAPTER 4. REMOVING OF MAJOR PARTS

CHAPTER 5. ADJUSTMENT

CHAPTER 6. TROUBLESHOOTING TABLE

CHAPTER 7. MAJOR IC INFORMATIONS

CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK DIAGRAM

Parts Guide

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-80LE632U(A)

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

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

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

...............................

..... 1-1

..... 2-1

..... 3-1

CHAPTER 6. TROUBLESHOOTING TABLE

[1] Failure diagnosis by LED in front of cab-

i.........................................................NOITUAC

inet

........................................

[2] LED flashing specification at the time of

an error (Center icon LED used)

[3] TROUBLESHOOTING TABLE

CHAPTER 7. MAJOR IC INFORMATIONS

[1] MAJOR IC INFORMATIONS

APTER 8. OVERALL WIRING/SYSTEM BLOCK

CH DIAGRAM

[1] OVERALL

[2] SYSTEM BLOCK DIAGRAM

WIRING DIAGRAM

........................................

..........................

..... 6-1

........................................

..... 8-1

.. 6-1

. 6-4

... 7-1

... 8-2

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS

[2] Precautions for assembly

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE

[2] PUBLIC MODE SETTING PROCE-

DURE

......................

..............................

.........................

..... 4-1

... 4-33

..... 5-1

... 5-15

Parts Guide

LC-80LE632U(A)

LC52LE640U

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.

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

F7001 (250V 5A) :

LC-52/60/70LE640U/C6400U

F7003 (250V 6.3A) :

LC-80LE632U(A)

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.

LC-80LE632U(A)

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.

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ

AVERTISSEMENT

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

Débrancher le récepteur avant toute réparation.

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

F7001 (250V 5A) :

LC-52/60/70LE640U/C6400U

F7003 (250V 6.3A) :

LC-80LE844U,LC-60LE632U(A)

• 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.

Inspecter tous les faisceaux de câbles pour s'assurer que les fils

3. 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

4. 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

5. 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

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.

LC-80LE632U(A)

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 ?0.3mm 250g (1roll) ZHNDAi126500E BK J ?0.6mm 500g (1roll) ZHNDAi12801KE BM J ?1.0mm 1kg (1roll)

PRICE RANK

PART

DELIVERY

DESCRIPTION

iii

LC-80LE632U(A)

LC52LE640U

OUTLINE

Service Manual

MAJOR SERVICE PARTS

PWB Unit

Ref No. Parts No. Description

N DKEYMF733FM82 MAIN Unit N DUNTKF800FM53 KEY Unit N DUNTKF975FM07 LCD CONTROL Unit

N DUNTKF770FM02 ICON Unit N DUNTKF494FM01 R/C OPC Unit N RUNTKA936WJQZ Wi-Fi Unit N RUNTKA903WJN1 POWER/LED DRIVE Unit

NOTE:

• LC-80LE632U(A)

*1 Replace MAIN PWB Units (DKEYMF733FM**) in case of IC8401, IC3303, IC8455 or IC5803 failure.

OTHER Unit

Ref No. Parts No. Description

N R1LK800D3GW10Z 80" LCD Panel Module Unit

IC For Exclusive Use Of The Service

Ref No. Parts No. Description Q’ty

IC2001 RH-iXD241WJNSQ IC R5F21368CNFP (Monitor Microprocessor)

Service Jigs

Ref No. Parts No. Description Q'ty

N QCNW-C222WJQZ Connecting Cord L=1000mm 80pins, LCD Control to LCD Panel, x2 2

N QCNW-M580WJQZ

N QCNW-L795WJQZ

N QCNW-Q405WJQZ Connecting Cord L=1000mm 4pins, Main to LCD Control(PL)

Connecting Cord L=1000mm 41pins, Main to LCD Control (LW)

Connecting Cord L=1000mm 24pins, Main to Power (PD)

LC-80LE632U(A)

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

LC-80LE632U

1 – 1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

• LC-80LE632U(A)

LC-80LE632U(A)

2 – 1

LC-80LE632U(A)

2 – 2

LC-80LE632U(A)

2 – 3

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

LC-80LE632U(A)

3 – 1

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS

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

1. Remove the 4 lock screws and detach the Stand Unit .

2. Remove the 10 lock screws and 26 lock screws and detach the Rear Cabinet .

2Stand Unit

LC-80LE632U(A)

[Precautions when mounting and removing the rear cabinet]

If the rear cabinet is removed with the set upright, the speakers may fall; it results in connector disconnection. Therefore, never remove the rear cabinet with the set upright.

Be sure to remove the rear cabinet with the screen side down.

Rear Cabinet

Tighten together with the Rear Cabinet Ass'y.

Fix with the 80" LCD Panel Module Unit.

4 – 1

Only one side (outer) can come off.

LC-80LE632U(A)

[How to remove Rear Cabinet Ass’y]

* Please do following works by 2 persons

Do following works as ? ? ?

1) Please grasp the swelling of a speaker and pull back with pushing down.

Remove one hook under an operation.

2) Put a hand in terminal area and pulls back, and the other hand holds top side of TV set.

Remove all-right hand side hook.

4 – 2

3) Hold left side of TV set by one hand, and put the other hand between bottom cover and Rear Cabinet Ass’y.

And pull Rear Cabinet Ass’y.

Remove all-left hand side hook.

4) Two persons stand on the both sides of TV SET, and have a Front Cabinet Ass’y and a Rear Cabinet Ass’y by each hand.

Two persons pull a Rear Cabinet Ass’y horizontally back, simultaneously and remove it.

LC-80LE632U(A)

4 – 3

LC-80LE632U(A)

Push

CAUTION

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

[Precautions for assembly]

There is a gap without the fingernail fitting in completely only when covering with Rear Cabinet Ass'y.

(Front Cabinet Ass’y/Rear Cabinet Ass’y fingernail fixation place)

The fingernail is surely fixed when Rear cabinet Ass'y is firmly pushed, and the gap disappears.

4 – 4

2. Removing of Speaker (L/R) and KEY Unit.

1. Disconnect the SP wire.

2. Remove the 2 lock screws and detach the Speaker (L) , Speaker (R) .

3. Disconnect the RC wire.

4. Detach the KEY Unit Ass’y .

5. Disconnect the KM wire.

6. Remove the 2 lock screws and detach the Key Button from Key Button Cover .

7. Detach the KEY Unit from Key Button .

MAIN Unit

KEY Unit Ass'y

LC-80LE632U(A)

[SP]

KEY Unit

[RC]

[SP]

31Speaker (R) 2

Speaker (L)

[KM]

6 Key Button

[How to remove KEY Unit Ass’y]

1) When you remove KEY Unit Ass’y, please be sure to remove harness from WH, and to hold the bottom of KEY Unit Ass’y.

Key Button Cover

4 – 5

LC-80LE632U(A)

3. Removing of Connectors, 80” LCD Panel Module Unit Ass’y.

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

2. Disconnect the following connectors from the POWER/LED DRIVE Unit. (L1, L2, PD)

3. Disconnect the following connectors from the LCD Control Unit. (PL, LW)

4. Remove the 27 Hooks and detach the 80” LCD Panel Module Unit Ass’y .

5. Detach the 2 Bottom cover .

Hock

[L1] [L2]

POWER/LED DRIVE

Unit

[PD]

Hock

[PL]

LCD Control Unit

2Bottom cover

MAIN Unit

[PD]

Hock

1 80" LCD Panel

Module Unit Ass'y

[LW]

MAIN Unit

[LV]

[CI]

[UB]

4 – 6

LC-80LE632U(A)

4. Removing of LCD CONTROL Unit, MAIN Unit, POWER/LED DRIVE Unit.

1. Remove the 2 Connecting Cords (LC-80LE632U(A)) or 4 Connecting Cords (LC-80LE844U), 6 lock screws and detach the LCD CONTROL Unit .

2. Remove the 5 lock screws and detach the Shield (MAIN Unit) .

3. Remove the 3 lock screws and detach the MAIN Unit and Terminal Angle (Bottom) .

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

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

6. Remove the 16 lock screws and detach the 4 VESA Angle Ass’ys .

Ass'y

15VESA Angle

15 VESA Angle Ass'y

80" LCD Panel Module Unit

Stand Angle

POWER/ LED

DRIVE

Unit

LCD

MAIN Unit

Control Unit

Stand

Angle

Terminal Angle (Bottom)

1 FFC(LC-80LE632U(A))

FFC(LC-80LE844U)

Shield (MAIN Unit)

4 – 7

LC-80LE632U(A)

5. Removing of R/C OPC Unit, ICON Unit, Wi-Fi Unit.

1. Detach the R/C OPC Unit .

2. Disconnect the RC wire.

3. Detach the ICON Unit .

4. Disconnect the CI wire.

5. Detach the Wi-Fi Unit .

6. Disconnect the UB wire.

7. Detach the WiFi Attachment .

Front Cabinet Ass'y

4 WiFi Attachment

[CI]

[UB]

[RA]

3ICON Unit 2 Wi-Fi Unit 1 R/C OPE Unit

4 – 8

LC-80LE632U(A)

[2] 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.

PMLT-A679WJQZ

PMLT-A678WJQZ x 2 pcs

Attach the conductive nonwoven fabric gasket on the RF terminal angle. (PMLT-A680WJQZ)

State where the main PWB and shielded case are assembled

PSPAZC740WJZZ

Access hole

4 – 9

LC-80LE632U(A)

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 – 10

LC-80LE632U(A)

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: DKEYMF733FM82

 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_LE640_xxx.USB).

• Monitor microprocessor software (please use a software version after BM2SMxxx.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_LE640_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

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