lg lhs-a4000wa.s_ev audio

DIGITAL HOME CINEMASYSTEMSERVICE MANUALMODELS : LHS-A4000WA/LHS-A4000WD

LHS-A4000C/LHS-A4000T

MO

DE

LS

: LH

S-A

4000WA

/LH

S-A

4000WD

/LH

S-A

4000C/L

HS

-A4000T

SE

RV

ICE

MA

NU

AL

P/NO : 3829RGP019S JULY,2005

1-1

[CONTENTS]

SECTION 1.GENERAL• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

SECTION 2. ELECTRICAL

• TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

• IC VOLTAGE SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

• WIRNG DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

• BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

• SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

SECTION 3. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

SECTION 4. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

ESD PRECAUTIONS

1-21-2

Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surfacesuch as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" cangenerate electrical charges sufficient to damage ESD devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDdevices.

6. Do not remove a replacement ESD device from its protective package until immediately before you areready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).

7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.

CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALLOTHER SAFETY PRECAUTIONS.

8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generatestatic electricity sufficient to damage an ESD device).

CAUTION. GRAPHIC SYMBOLS

THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, ISINTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OFELECTRIC SHOCK.

THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.

SECTION 1. GENERAL

1-3

SPECIFICATIONS

Power supply Refer to the main label

Power consumption 60 W

Mass 10 kg

External dimensions (W x H x D) 246 x 430 x 420 mm

Operating conditions Temperature: 5°C to 35°C, Operation status: Horizontal

Frequency response (audio) 120 Hz to 20 kHz

Signal-to-noise ratio (audio) More than 75 dB (1 kHz, NOP, W/IHF-A & 20 kHz Filter)

Harmonic distortion (audio) 1.0 % (1 kHz, at 12W position) (20 kHz LPF/A Filter)

Surround mode Front: 60W + 60W (THD 10 %)

Center*: 60W

Surround*: 60W + 60W (8Ω at 1 kHz, THD 10 %)

Subwoofer*: 120W (4Ω at 250 Hz, THD 10 %)

FM

Tuning Range 87.5 - 108.0 MHz or 65 - 74 MHz, 87.5 - 108.0 MHz

Intermediate Frequency 10.7 MHz

Signal to Noise Ratio 60/55 dB

Frequency Response 140 -10,000 Hz

AM

Tuning Range 522 - 1611 kHz or 530 - 1610 kHz or 530 - 1720 kHz

Intermediate Frequency 450 kHz

Signal to Noise Ratio 37 dB

Frequency Response 140 - 25,000 Hz

Inputs AUX, COAXIAL, OPTICAL AUDIO

Model Satellite Speaker Center Speaker Active Subwoofer (LHS-A4000T) (LHS-A4000C) (LHS-A4000WA/WD)

Type 2 Way 2 Speaker 2 Way 2 Speaker 1 Way 1 Speaker

Impedance 8 Ω 8 Ω 4 Ω

Frequency Response 120 - 20,000 Hz 120 - 20,000 Hz 40 - 180 Hz

Sound Pressure Level 84 dB/W (1m) 84 dB/W (1m) 82 dB/W (1m)

Rated Input Power 60 W 60 W 120 W

Max. Input Power 120 W 120 W 240 W

Net Dimensions (W x H x D) 100 x 162 x 120 mm 225 x 102 x 120 mm 246 x 430 x 420 mm

Net Weight 0.8 kg 0.9 kg 10 kg

• Designs and specifications are subject to change without notice.

2-1

TROUBLESHOOTING GUIDE

"Hello"

SECTION 2. ELECTRICAL

2-2

• AUDIO µ-COM Circuit

TURN ON "Hello"? POWER Check or Press the ON KEY

2-3

• IC VOLTAGE SHEET

IC201(CS42516)PIN NO. Volt(V)

1. Power &Micom 2. DSP

IC801(PT6315)PIN NO. Volt(V)

5.VFD DRIVE

IC204,IC205(NJM4580M)PIN NO. Volt(V)

3. OP-AMP

IC202(CS493264)PIN NO. Volt(V)

IC501,IC502,IC503,IC504PIN NO. Volt(V)

IC700(LC87F57C8A)PIN NO. Volt(V)

IC301(PS9808)PIN NO. Volt(V)3610132229353942475665667280879194

1.8V1.8V3.3V1.8V3.3V3.3V1.8V3.3V1.8V3.3V3.3V3.3V1.8V3.3V1.8V3.3V1.8V3.3V

4. DAP

4712152122

93659

10-40V10-40V10-40V10-40V5V5V

4.9V4.96V4.876V

24 4.99V 48

-8.19V8.2V

1122334

2.41V2.41V2.41V2.387

1343

4.8V4.8V

2-4 2-5

WIRING DIAGRAM

PW901

CN801JK204

TUNER(TU201)

TUNINGDOWN

TUNINGUP

ST-BYON

VOLDOWN

MEMORY FUNCTION

VOLUP

CN902 CN703 CN205 CN501

PN701 PN703 PN205 PN501

2-6 2-7

BLOCK DIAGRAM

TUN

TUN

IC206

4052

IC504STA505

IC503STA515

IC501STA505

IC502STA505

22µH

22µH

22µH

IC301PS9818

2-8 2-9

SCHEMATIC DIAGRAMS1. AMP SCHEMATIC DIAGRAM

A B C D E F G H I J K L M N O P Q R S T

2-10 2-11

2. SMPS WIDE SCHEMATIC DIAGRAM


2-12 2-13

3. DSP SCHEMATIC DIAGRAM 1


2-14 2-15

4. DSP SCHEMATIC DIAGRAM 2


2-16 2-17

5. MICOM & POWER SCHEMATIC DIAGRAM


2-18 2-19

6. I/O FRONT SCHEMATIC DIAGRAMS


2-20 2-21

PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP VIEW)

2-22 2-23

1. MAIN P.C.BOARD (BOTTOM VIEW)

2-24 2-25

2. FRONT, JACK P.C.BOARD (TOP VIEW)

2-26 2-27

2. FRONT, JACK P.C.BOARD (BOTTOM VIEW)

2-28 2-29

3. SMPS P.C.BOARD

3-1 3-2

A90

961

960

958

959

953

951

950

952

954

955

957 962

300

826

956

A47W

A46W

A50W

TU201

S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS

LGEAP

DRAGON/LGESA/LGEES

A90 6401RM0198A SPEAKER ASSEMBLY F70C-D390 KEP LHS-A4000W SVC P

300 6410RKHV03A POWER CORD AU10S2 VOLEX SAA 1800MM GP390

300 6410RCHZ05C POWER CORD CE-503/KKJ-1004A(ST-HS:95MM)

826 6200JB8010K FILTER(CIRC),EMC ZCAT2132-1130-M-K TDK BK JACKE

950 3508RMP097A DECORATION LH-A4000W MOLD DECO FRONT

951 3790RCP660A WINDOW,DECO SPK LH-A4000W OTHER WINDOW FL

952 3720RMF129A PANEL,FRONT SPK LH-A4000W MOLD PANEL FRONT

953 4940RMV003A KNOB SPK LH-A4000W MOLD KNOB FUNTIO

955 3610RM0055A FOOT SPK LH-A4000W MOLD FOOT

956 3720RMM020A PANEL,AUDIO SPK LH-A4000W MOLD PANEL LEFT

958 3720RMM021A PANEL,AUDIO SPK LH-A4000W MOLD PANEL TOP

959 6400WKEM01A SPEAKER,WOOFER F70C-D390 KEP WOOFER 4OHM 120/

960 3720RMM019A PANEL,AUDIO SPK LH-A4000W MOLD PANEL RIGHT

961 3701RM0140A NET ASSEMBLY SPK LHS-A4000W NET ASSY

962 3720RCP742A PANEL,AUDIO SPK LH-A4000W PRESS PANEL BACK

954 3091RMW133A CABINET ASSEMBLY SPK LHS-A4000W CABINET ASSY

957 3550RM0037A COVER SPK LH-A4000W MOLD COVER FRONT

A50W 6871R-6351B PWB(PCB) ASSEMBLY,TOTAL LH-A4000 FRONT+JACK TOTAL ASSY

A46W 6871R-6350A PWB(PCB) ASSEMBLY,TOTAL LH-A4000 AUDIO MAIN TOTAL ASSY

A47W 6871R-6420A PWB(PCB) ASSEMBLY,TOTAL LH-A4000 SMPS TOTAL ASSY FREE

•CABINET, MAIN FRAME AND AUDIO DECK SECTION

SECTION 3. EXPLODED VIEWS

3-3 3-4

•SPEAKER SECTION

757

756

755

A70

754

753

752

751

750

S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKSA70 6401RM0197A SPEAKER ASSEMBLY F30C-D600 TOPTONE LHS-A4000C S

750 3701RM0139A NET ASSEMBLY SPK LHS-A4000C NET ASSY

751 3720RMF131A PANEL,FRONT SPK LH-A4000C MOLD PANEL FRONT

752 6400PKET01A SPEAKER,FULLRANGE NL 40-13 KEP PIEZO 0OHM 0W 0DB

753 6400FTTC08A SPEAKER,FULLRANGE F30C-D600 TOPTONE FULL-RANGE(H

754 4930RM0060A HOLDER SPK LHS-A4000T/C MOLD PREVENT

755 3610RM0058A FOOT SPK LHS-A4000T/C OTHER PHI 10X

756 3110RMP084A CASE LH-A4000C MOLD CASE REAR

757 6871RU0067A PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-A4000T/C STANDARD 2P TERMI

S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKSA80 6401RM0196A SPEAKER ASSEMBLY F30C-D600 TOPTONE LHS-A4000T S

850 3701RM0138A NET ASSEMBLY SPK LHS-A4000T NET ASSY

851 3720RMF130A PANEL,FRONT SPK LH-A4000T MOLD PANEL FRONT

852 6400PKET01A SPEAKER,FULLRANGE NL 40-13 KEP PIEZO 0OHM 0W 0DB

853 6400FTTC08A SPEAKER,FULLRANGE F30C-D600 TOPTONE FULL-RANGE(H

854 4930RM0060A HOLDER SPK LHS-A4000T/C MOLD PREVENT

855 3610RM0058A FOOT SPK LHS-A4000T/C OTHER PHI 10X

856 3110RMP083A CASE LH-A4000T MOLD CASE REAR

857 6871RU0067A PWB(PCB) ASSEMBLY,SUBSET(AUDIO LHS-A4000T/C STANDARD 2P TERMI

• MODEL: LHS-A4000C

857

856

855

854852

853

851

850

A80

• MODEL: LHS-A4000T

3-5 3-6

• PACKING ACCESSORY SECTION

BATTERY

INSTRUCTION ASSEMBLY

BOX

REMOCON

ANTENNA LOOP(AM)

PLUG ASS’Y 2WAY

PACKING, CASING

PACKING, CASING

PACKING, CASING

812

824

801

802

808

ANTENNA (FM)825

900

803A

803B

803C

S AL LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS801 3835RP0111C INSTRUCTION ASSEMBLY SPK LHS-A4000WA.NA2ALLP LGEAP LGEAP

LGESA

LGEES

DRAGON

LGEAP/RAGON/LGESA

LGEES

LGEES

LGEAP/RAGON/LGESA

801

801

801

3835RP0111D INSTRUCTION ASSEMBLY SPK LHS-A4000WA.NA2ALLP LGESA

3835RP0111E INSTRUCTION ASSEMBLY SPK LHS-A4000WA.NA6SLLP LGEES

3835RP0111F INSTRUCTION ASSEMBLY SPK LHS-A4000WA.NA7MDLP DRAGON

825 5010R-D002A ANTENNA,LEAD FM ANT FIA-101C KWANG SUNG L=1

825 5010R-D004A ANTENNA,RF FM ANT T15011N-1 KWANG SUNG LE

803B 3920RME174B PACKING SPK LHS-A4000 0 MID PACKING

803C 3920RME174C PACKING SPK LHS-A4000 0 BOT PACKING

808 534-008C BATTERY,MANGANESE AAAM(R03) SEOTONG 1-5 V - 1PA

812 6611R2D001A PLUG ASSEMBLY 2WAY RED/WHITE 3.0M AUDIO DOME

824 5010R-L002B ANTENNA,LOOP S0160BL-09 (LS0160BL-X000009-0

802 3890RCC171A BOX LHS-A4000W ENG DW2 .

803A 3920RME174A PACKING SPK LHS-A4000 0 TOP PACKING

803B 3920RME174B PACKING SPK LHS-A4000 0 MID PACKING

803C 3920RME174C PACKING SPK LHS-A4000 0 BOT PACKING

808 534-008C BATTERY,MANGANESE AAAM(R03) SEOTONG 1-5 V - 1PA

812 6611R2D001A PLUG ASSEMBLY 2WAY RED/WHITE 3.0M AUDIO DOME

824 5010R-L002B ANTENNA,LOOP S0160BL-09 (LS0160BL-X000009-0

825 5010R-D004A ANTENNA,RF FM ANT T15011N-1 KWANG SUNG LE

900 6710CAAK01A REMOTE CONTROLLER KIE 57KEY KIE LH-A4000 LG

900 6710CAAK01B REMOTE CONTROLLER KIE 57KEY KIE LH-A4000 LG WITH

lg lhs-a4000wa.s_ev audio

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