Sharp LC-40L550M, LC-40L650M Service manual

Name: Sharp LC-40L550M
Brand: Sharp
SKU: 5056698
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LC-40L550/650M

SERVICE MANUAL

No. S80I8LC40L65M

LCD COLOUR TELEVISION

LC-40L550M

MODELS

In the interests of user safety (required by safety regulations in some countries) the set should be restor ed to its original condition and only parts identical to those specified should be used.

LC-40L650M

OUTLINE

This model is based on the LC-40L500M and partially modified. For the contents not covered in this Service Manual, accordingly, please refer to the LC-40L500M (No. S60G6LC40L50M) Service Manual.

CONTENTS

OUTLINE AND DIFFERENCES FROM BASE MODEL

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

DIFFERENCES FROM BASE MODEL...............i

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION...........................................................ii PRECAUTIONS FOR USING LEAD-FREE

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

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS...................4-1

CHAPTER 5. OVERALL WIRING/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM......................5-1 [2] SYSTEM BLOCK DIAGRAM (LC-

40L550M) ......................................................5-2

[3] SYSTEM BLOCK DIAGRAM (LC-

40L650M) ......................................................5-3

MAJOR SERVICE PARTS

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

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.

CHAPTER 6. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM............................................................6-1

[2] MAIN Unit ......................................................6-2

Parts Guide

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

LC-40L550/650M



LC40L550M

OUTLINE AND DIFFERENCES FROM BASE MODEL

ServiceManual

OUTLINE

This model is based on the LC-40L500M and partially modified. For the contents not covered in this Service Manual, accordingly, please refer to the LC-40L500M (No. S60G6LC40L50M) Service Manual.

DIFFERENCES FROM BASE MODEL

LIST OF CHANGED PARTS (LC-40L550M)

Ref. No. Description LC-40L500M LC-40L550M Note

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit (except Philippines) DUNTKF541FM02 DKEYMF541FM06 Changed N MAIN Unit (for Philipines) DUNTKF541FM12 DUNTKF541FM16 Changed N R/C, LED Unit DUNTKF573FM01 DUNTKF573FM02 Some parts changed N POWER Unit RDENCA408WJQZ ← —

LCD PANEL N LCD Panel Module Unit R1LK400D3LWL0W ← —

R/C, LED Unit D103 Diode RH-PXA194WJQZY RH-PXA192WJQZY Changed R108 Resistor VRS-CY1JF181JY VRS-CY1JF182JY Changed

MAIN Unit, CABINET PARTS, SUPPLIED ACCESSORIES, PACKING PARTS (NOT REPLACEMENT ITEM), SERVICE JIGS (USE FOR SERVICING) Please refer to a Parts list.

LIST OF CHANGED PARTS (LC-40L650M)

Ref. No. Description LC-40L500M LC-40L650M Note

PRINTED WIRING BOARD ASSEMBLIES N MAIN Unit (except Philippines) DUNTKF541FM02 DKEYMF541FM08 Changed N MAIN Unit (for Philipines) DUNTKF541FM12 DUNTKF541FM18 Changed N R/C, LED Unit DUNTKF573FM01 DUNTKF573FM02 Some parts changed N POWER Unit RDENCA408WJQZ ← —

LCD PANEL N LCD Panel Module Unit R1LK400D3LWL0W R1LK400D3GW20W Changed

R/C, LED Unit D103 Diode RH-PXA194WJQZY RH-PXA192WJQZY Changed R108 Resistor VRS-CY1JF181JY VRS-CY1JF182JY Changed

MAIN Unit, CABINET PARTS, SUPPLIED ACCESSORIES, PACKING PARTS (NOT REPLACEMENT ITEM), SERVICE JIGS (USE FOR SERVICING) Please refer to a Parts list.

LC-40L550/650M



LC40L550M

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.

BEFORE RETURNING THE RECEIVER (Fire &

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 0.74 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.

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 110-240 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.

• 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.

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

TO EXPOSED METAL PARTS

DVM

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

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.

LC-40L550/650M

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-40L550/650M



LC40L550M

MAJOR SERVICE PARTS

ServiceManual

MAJOR SERVICE PARTS

PWB Unit

Ref No. Part No. Description

N DKEYMF541FM06 MAIN Unit (except Philippines) (LC-40L550M) N DUNTKF541FM16 MAIN Unit (for Philippines) (LC-40L550M) N DKEYMF541FM08 MAIN Unit (except Philippines) (LC-40L650M) N DUNTKF541FM18 MAIN Unit (for Philippines) (LC-40L650M) N DUNTKF573FM02 R/C, LED Unit N RDENCA408WJQZ POWER Unit

OTHER Unit

Ref No. Part No. Description

N R1LK400D3LWL0W LCD Panel Module (LC-40L550M) N R1LK400D3GW20W LCD Panel Module (LC-40L650M)

IC FOR EXCLUSIVE USE OF THE SERVICE

Ref No. Part No. Description Q'ty IC508 RH-iXD172WJQZS IC PC EDID 1 IC1503 RH-iXD173WJQZS IC HDMI-1 EDID 1 IC1504 RH-iXD175WJQZS IC HDMI-3 EDID 1 IC1505 RH-iXD174WJQZS IC HDMI-2 EDID 1

SERVICE JIGS

Ref No. Part No. Description Q'ty

N QCNW-L078WJQZ Extension Cable, Main to LCD Control (LW) (LC-40L550M) 1 N QCNW-L079WJQZ Extension Cable, Main to LCD Control (LW) (LC-40L650M) 1 N QCNW-K814WJQZ Extension Cable, Power to Inverter (PI) 1 N QCNW-G445WJQZ Extension Cable, Main to Speaker (SP) 1

LC-40L550/650M



LC40L550M

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Item Model LC-40L550M LC-40L650M

LCD panel

Resolution

Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60

TV Function

Viewing angles H : 176º V : 176º

Audio amplifier

Speakers

Terminals Antenna input

TV-Standard PAL: B/G, D/K, I SECAM: B/G, D/K, K/K

Receiving Channel

TV-Tuning System Auto Preset 99 ch

STEREO/BILINGUAL NICAM: B/G, I, D/K A2 stereo: B/G M: MTS

INPUT 1 HDMI (HDMI input) (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz,

INPUT 2

INPUT 3

INPUT 4 S-VIDEO in, VIDEO in, AUDIO in

INPUT 5 VIDEO in, AUDIO in

INPUT 6 AUDIO in, COMPONENT in (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz,

INPUT 7 (PC input)

USB USB

RS-232C 9 pin D-sub male connector

VHF/UHF 44.25 — 863.25 MHz

CATV S1 — S41ch (including Hyperband)

DIGITAL AUDIO OUTPUT

OSD language English/Simplified Chinese/Arabic/French/Portuguese/Russian/Persian/Thai/

Power Requirement AC 110 — 240 V, 50/60 Hz

Power Consumption 169 W (0.9 W Standby) 171 W (0.9 W Standby)

Dimensions

Weight without stand (with stand) 15.5 kg (16.5 kg)

Operating Temperature 0°C — 40°C

As a 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.

without stand (mm)

with stand (mm)

40" (1016 mm) Advanced Super View & BLACK TFT LCD

2,073,600 pixels (1920 x 1080)

10 W x 2

9x5cm 2pcs

UHF/VHF 75

1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz), AUDIO in (㱢 3.5 mm jack)

HDMI (HDMI input) (480I, 576I, 480P, 576P, 720P/50Hz, 720P/60Hz, 1080I/50Hz, 1080I/60Hz, 1080P/50Hz, 1080P/60Hz, 1080P/24Hz)

1080I/50Hz, 1080I/60Hz, 1080P/50Hz, 1080P/60Hz) 15 pin mini D-sub, AUDIO in (common use with INPUT 1) (

Optical Digital Audio Output

Vietnamese/Indonesian

986 (W) x 640 (H) x 115 (D)

986 (W) x 685 (H) x 311.8 (D)

DIN type

ServiceManual

NTSC: M

㱢

3.5 mm jack)

1 – 1



LC40L550M

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

TV (Rear)

A C

I N P

6 7

ServiceManual

OPC sensor

Remote control sensor

POWER indicator

Light off Power off

Lighted (Red) The TV is in standby mode.

Lighted (White) The TV is on.

1 POWER (On/Off) button 2MENUbutton

3 TV/VIDEO button 4 Channel up( )/down ( ) buttons 5 Volume up (+)/down (-) buttons 6 RS-232C terminal 7 INPUT 7 (PC) terminals* 8 DIGITAL AUDIO OUTPUT terminal 9 INPUT 1 (HDMI) terminal 10 Antenna input terminal* 11 INPUT 4 terminals 12 MONITOR OUT terminals 13 INPUT 5 terminals 14 INPUT 6 terminals 15 INPUT 2 (HDMI) terminal 16 USB terminal** 17 INPUT 3 (HDMI) terminal 18 Headphone jack(

• The speakers do not output volume when headphones are plugged in.

LC-40L550/650M

3.5 mm)

1211

13 14 15

* The INPUT 1 and INPUT 7 terminals can both use the same audio input terminal. However, the proper item must be

selected in the “PC audio select” menu.

**USB terminal use for USB Media Player. Please see “USB Media Player Operation Manual” in separate sheet.

• The illustrations in this operation manual are for explanation purposes and may vary slightly from the actual operations.

• The illustrations used throughout this manual are based on LC-40L550M.

2 – 1

LC-40L550/650M

Remote control unit

1 (Mute)

Press Mutes sound. Press again Restores sound. Mute will be cancelled after 30 minutes. However, the TV will not suddenly output loud sound as the volume level will be set to 0 automatically. Increase the volume level by pressingVOL +.

2 0–9

Set the channel. TELETEXT mode: Set the page.

3 (Flashback)

Press to return to the previous selected channel or external input mode.

4WIDE

Change the wide image mode.

5 VOL +/VOL -

Set the volume. (VOL +)Increase the volume. (VOL - ) Decrease the volume.

6 FREEZE

Freeze a motion picture on the screen.

7 EXIT

3 4 5

11 12

13 14

15 16

17 18

Return to the default screen.

8 Colour (Red/Green/Yellow/Blue)

TELETEXT mode: Select a page.

9 POWER (STANDBY/ON)

To switch the power on and off.

10 DISPLAY

Display the channel or input information.

11 SLEEP

Set the Sleep timer.

0hr.30min. 1hr.00min.

Off

12 AV MODE

Select an audio and video setting.

13 MPX

Select the sound multiplex mode.

14 TV/VIDEO (INPUT SOURCE)

Select an input source.

15 CH /C H

TV input mode: Select the channel. (CH ) Increase the channel number. (CH ) Decrease the channel number. TELETEXT mode: Select the page.

16 PC

Directly select the PC terminal.

17 MENU

Display the menu screen.

18 /// (Cursor)

Select a desired item on the setting screen.

ENTER

Execute a command.

19 RETURN

MENU mode: Return to the previous menu screen.

20 (TELETEXT)

Select the TELETEXT mode. (all TV image, all TEXT image, TV/TEXT image)

(Reveal hidden for TELETEXT)

TELETEXT mode: Display hidden characters.

(SUBTITLE for TELETEXT)

To turn the subtitles on.

(Hold)

TELETEXT mode: Stop updating Teletext pages automatically. Press again to release the hold mode.

(Subpage)

Display the Teletext subpage directly when in Teletext mode.

(Top/Bottom/Full)

TELETEXT mode: Set the area of magnification.

2hr.30min.

1hr.30min.

2hr.00min.

Inserting the battery

Before using the TV for the first time, insert a “AA” size battery (supplied). When the battery become depleted and the remote control fails to operate, replace the battery with new “AA” size battery.

Open the battery cover.

CAUTION

• Battery (battery pack or battery installed) shall not be exposed to excessive heat such as sunshine, fire or the like.

Insert the supplied “AA” size battery.

•

Place battery with their terminals corresponding to the (+) and (-) indications in the battery compartment.

Close the battery cover.

2 – 2

LC-40L550/650M

Attaching the stand

• Before attaching (or detaching) the stand, unplug the AC cord from the AC outlet.

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

Confirm the screws supplied with the TV.

Screws (x4)

(used in step 3)

Insert the stand base to the stand post on

the bottom of the TV.(1) Insert and tighten the 4 screws into the 4

holes on the bottom of the stand base.(2)

NOTE

• To detach the stand, perform the steps in reverse order.

CAUTION

• Adjust the screen with both hands. Put one hand on the TV and rotate the screen while steadying the stand with your other hand.

The TV can be rotated up to 15 degrees to the right or left.

Soft cushion

Screw

Screw driver

15°

2 – 3

LC-40L550/650M



LC40L550M

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

ServiceManual

Unit: mm

3 – 1



LC40L550M

CHAPTER 4. REMOVING OF MAJOR PARTS

ServiceManual

[1] REMOVING OF MAJOR PARTS

1. Removing of the Stand and Back Cover Ass’y

1. Detach the Stand Hinge Cover .

2. Remove the 4 lock screws and detach the Stand.

3. Remove the 6 lock screws .

4. Remove the 1 lock screw and detach the Back Cover Ass’y.

LC-40L550/650M

Back Cover Ass'y

Stand Hinge Cover

Stand

4 – 1

LC-40L550/650M

2. Removing of the MAIN Shield, MAIN Unit, POWER Unit and disconnect the connectors

1. Disconnect the connectors from the MAIN Unit, POWER Unit.

2. Remove the 2 lock screws , 4 lock screws , 1 lock screw , 4 lock screws , 2 lock screws , and detach the MAIN Shield .

3. Detach the MAIN unit.

4. Remove the 5 lock screws , 2 lock screws , 4 hooks and detach the POWER Unit.

MAIN Shield

POWER Unit

(40L650M)

BtoB

Main Unit

BtoB

4 – 2

3. Removing of the Rear Cabinet

1. Remove the 9 lock screws and detach the Rear Cabinet.

LC-40L550/650M

Rear Cabinet

4 – 3

LC-40L550/650M

4. Removing of the Speaker-LR, VESA Angle, Earth Angle

1. Disconnect SP connectors . Remove the 2 lock screws and detach the Speaker-LR.

2. Disconnect the connectors from the LCD Control Unit , INVERTER Unit .

3. Remove the 8 lock screws and detach the VESA Angle .

4. Remove the 6 lock screws and detach the Fixing Metal , Earth Angle .

5. Remove the 2 lock screws and detach the Side Earth Angle and Top Earth Angle .

INVERTER

Unit

VESA Angle

LCD Control Unit

Top Earth Angle

Side Earth Angle

Speaker-L

Speaker-R

Fixing Metal

VESA Angle

Earth Angle

VESA Angle

4 – 4

5. Removing of the Center Angle, R/C, LED Unit, LCD Panel Module

1. Remove the 4 lock screws , 4 lock screws and detach the Center Angle .

2. Remove the 2 lock screws and detach the LCD Panel Module.

3. Remove the 1 lock screw and detach the Power Decoration and R/C, LED Unit.

LC-40L550/650M

Center Angle

LCD Panel Module

Center Angle

R/C, LED Unit

Power Decoration

4 – 5

+ 35 hidden pages