Sharp LC-40LX814E, LC-46LX814E, LC-40LU824E, LC-46LU824E Schematic

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LC-40/46LX814E, LC-40/46LU824E

SERVICE MANUAL

No. S00N840LX814E

LCD COLOUR TELEVISION

LC-40LX814E LC-46LX814E LC-40LU824E

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-46LU824E

OUTLINE

This Service Manual covers the differences from LC-40/46LE814E, LC-40/46LE824E. For other technical information, refer to the LC-40/46LE814E, LC-40/46LE824E (No. S90K840LE814E) Service Manual.

CONTENTS

OUTLINE AND DIFFERENCES FROM BASE MODEL

OUTLINE.................................................................... i

DIFFERENCES FROM BASE MODEL

(LC-40LX814E) .......................................................... i

DIFFERENCES FROM BASE MODEL

(LC-46LX814E) .......................................................... i

DIFFERENCES FROM BASE MODEL

(LC-40LU824E) ......................................................... ii

DIFFERENCES FROM BASE MODEL

(LC-46LU824E) ......................................................... ii

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY

PRECAUTION...........................................................iii

Precautions for using lead-free solder ..................... iv

End of life disposal.................................................... v

OUTLINE

MAJOR SERVICE PARTS ....................................... vi

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-40/46LX814E, LC-40/46LU824E

OUTLINE AND DIFFERENCES FROM BASE MODEL

Service Manual

OUTLINE

This Service Manual covers the differences from LC-40/46LE814E, LC-40/46LE824E.

For other technical information, refer to the LC-40/46LE814E, LC-40/46LE824E (No. S90K840LE814E) Service Manual.

DIFFERENCES FROM BASE MODEL (LC-40LX814E)

Ref No. Description

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit DKEYDF455FM11 ← — No change N ICON Unit DUNTKF493FM03 ← — No change N R/C, LED Unit DUNTKF494FM02 ← — No change N POWER/LED CONTROL Unit RUNTKA685WJQZ ← — No change N TOUCH SENSOR Unit RUNTKA692WJQZ ← — No change N LCD CONTROL Unit RUNTK4512TPZC ← — No change

LCD PANEL MODULE N 40” LCD Panel Module Unit R1LK400D3LWF2Y ← — No change

CABINET PARTS 1 Front Cabinet Ass'y CCABAC527WJ1A CCABAC527WJ1C D Changed

LC-40LE814E

(No. S90K840LE814E)

LC-40LX814E

(No. S00N840LX814E)

Interchangeability Note

DIFFERENCES FROM BASE MODEL (LC-46LX814E)

Ref No. Description

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit DKEYDF455FM11 ← — No change N ICON Unit DUNTKF493FM03 ← — No change N R/C, LED Unit DUNTKF494FM02 ← — No change N POWER/LED CONTROL Unit RUNTKA686WJQZ ← — No change N TOUCH SENSOR Unit RUNTKA692WJQZ ← — No change N LCD CONTROL Unit RUNTK4512TPZG ← — No change

LC-46LE814E

(No. S90K840LE814E)

LC-46LX814E

(No. S00N840LX814E)

Interchangeability Note

LCD PANEL MODULE N 46” LCD Panel Module Unit R1LK460D3LWG2Y ← — No change

CABINET PARTS 1 Front Cabinet Ass'y CCABAC528WJ1A CCABAC528WJ1C D Changed

DIFFERENCES FROM BASE MODEL (LC-40LU824E)

LC-40/46LX814E, LC-40/46LU824E

Ref No. Description

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit DKEYDF455FM12 ← — No change N ICON Unit DUNTKF493FM03 ← — No change N LOGO Unit DUNTKF493FM04 ← — No change N R/C, LED Unit DUNTKF494FM02 ← — No change N POWER/LED CONTROL Unit RUNTKA685WJQZ ← — No change N TOUCH SENSOR Unit RUNTKA761WJQZ ← — No change N LCD CONTROL Unit RUNTK4512TPZC ← — No change

LCD PANEL MODULE N 40” LCD Panel Module Unit R1LK400D3LWF0Y ← — No change

CABINET PARTS 1 Front Cabinet Ass'y CCABAC621WJ12 CCABAC621WJ13 D Changed

LC-40LE824E

(No. S90K840LE814E)

LC-40LU824E

(No. S00N840LX814E)

Interchangeability Note

DIFFERENCES FROM BASE MODEL (LC-46LU824E)

Ref No. Description

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit DKEYDF455FM12 ← — No change N ICON Unit DUNTKF493FM03 ← — No change N LOGO Unit DUNTKF493FM04 ← — No change N R/C, LED Unit DUNTKF494FM02 ← — No change N POWER/LED CONTROL Unit RUNTKA686WJQZ ← — No change N TOUCH SENSOR Unit RUNTKA761WJQZ ← — No change N LCD CONTROL Unit RUNTK4512TPZG ← — No change

LC-46LE824E

(No. S90K840LE814E)

LC-46LU824E

(No. S00N840LX814E)

Interchangeability Note

LCD PANEL MODULE N 46” LCD Panel Module Unit R1LK460D3LWG0Y ← — No change

CABINET PARTS 1 Front Cabinet Ass'y CCABAC612WJ12 CCABAC612WJ13 D Changed

Interchangeability

Completely interchangeableA:

Interchangeable from

OLD to NEW

NEWOLD

Interchangeable from

NEW to OLD

Not interchangeableD:

NEW OLD

OLDNEW

LC-40/46LX814E, LC-40/46LU824E

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:

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

• 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 1.05 V peak (this corresponds to 0.7 mA peak AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

40 inch model: F7000, F7001 (3.15A/250V) 46 inch model: F7000, F7001 (5A/250V)

DVM

 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 220~240 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.

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

TO EXPOSED METAL PARTS

SAFETY NOTICE

Many electrical and mechanical parts in LCD colour 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.

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

iii

LC-40/46LX814E, LC-40/46LU824E

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:

L Fa

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

L F a/a

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

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-40/46LX814E, LC-40/46LU824E

End of life disposal

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