Lg Rz-15la31 User manual

LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : ML-012A

MODEL : RZ-15LA31

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

Nov., 2002

Printed in KoreaP/NO : 3828VD0131C

- 2 -

CONTENTS

Contents .................................................................................................. 2

Safety Precautions ..................................................................................3

Servicing Precautions ............................................................................ 4

Description of Controls .......................................................................... 6

Adjustment Instruction ............................................................................9

Troubleshooting .....................................................................................15

Exploded View ...................................................................................... 16

Exploded View Parts List.......................................................................17

Replacement Parts List ........................................................................ 18

SVC. Sheet .................................................................................................

- 3 -

SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in

the Schematic Diagram and Replacement Parts List.

It is essential that these special safety parts should be replaced with the same components as recommended in this manual to

prevent X-RADIATION, Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

General Guidance

An lsolation Transformer should always be used during

the servicing of a receiver whose chassis is not isolated from

the AC power line. Use a transformer of adequate power rating

as this protects the technician from accidents resulting in

personal injury from electrical shocks.

It will also protect the receiver and it's components from being

damaged by accidental shorts of the circuitary that may be

inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,

replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film

Resistor, over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Due to high vacuum and large surface area of picture tube,

extreme care should be used in handling the Picture Tube.

Do not lift the Picture tube by it's Neck.

X-RAY Radiation

Warning:

To determine the presence of high voltage, use an accurate

high impedance HV meter.

Adjust brightness, color, contrast controls to minimum.

Measure the high voltage.

The meter reading should indicate

23.5 !1.5KV: 14-19 inch, 26!1.5KV: 19-21 inch,

29.0!1.5KV: 25-29 inch, 30.0 !1.5KV: 32 inch

If the meter indication is out of tolerance, immediate service

and correction is required to prevent the possibility of

premature component failure.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed

metallic parts of the cabinet, such as antennas, terminals, etc.,

to be sure the set is safe to operate without damage of

electrical shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source,

connect an electrical jumper across the two AC plug prongs.

Place the AC switch in the on positioin, connect one lead of

ohm-meter to the AC plug prongs tied together and touch other

ohm-meter lead in turn to each exposed metallic parts such as

antenna terminals, phone jacks, etc.

If the exposed metallic part has a return path to the chassis, the

measured resistance should be between 1MΩ and 5.2MΩ.

When the exposed metal has no return path to the chassis the

reading must be infinite.

An other abnormality exists that must be corrected before the

receiver is returned to the customer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor

between a known good earth ground (Water Pipe, Conduit, etc.)

and the exposed metallic parts.

Measure the AC voltage across the resistor using AC

voltmeter with 1000 ohms/volt or more sensitivity.

Reverse plug the AC cord into the AC outlet and repeat AC

voltage measurements for each esposed metallic part. Any

voltage measured must not exceed 0.75 volt RMS which is

corresponds to 0.5mA.

In case any measurement is out of the limits sepcified, there is

possibility of shock hazard and the set must be checked and

repaired before it is returned to the customer.

Leakage Current Hot Check circuit

The source of X-RAY RADIATION in this TV receiver is the

High Voltage Section and the Picture Tube.

For continued X-RAY RADIATION protection, the

replacement tube must be the same type tube as specified in

the Replacement Parts List.

1.5 Kohm/10W

To Instrument's

exposed

METALLIC PARTS

Good Earth Ground

such as WATER PIPE,

CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

- 4 -

CAUTION: Before servicing receivers covered by this service

manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONS

on page 3 of this publication.

NOTE:

If unforeseen circumstances create conflict between the

following servicing precautions and any of the safety

precautions on page 3 of this publication, always follow the

safety precautions. Remember: Safety First.

General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC

power source before;

a. Removing or reinstalling any component, circuit board

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug

or other electrical connection.

c.

Connecting a test substitute in parallel with an electrolytic

capacitor in the receiver.

CAUTION: A wrong part substitution or incorrect

polarity installation of electrolytic capacitors may result

in an explosion hazard.

d. Discharging the picture tube anode.

2. Test high voltage only by measuring it with an appropriate

high voltage meter or other voltage measuring device (DVM,

FETVOM, etc) equipped with a suitable high voltage probe.

Do not test high voltage by "drawing an arc".

3. Discharge the picture tube anode only by (a) first connecting

one end of an insulated clip lead to the degaussing or kine

aquadag grounding system shield at the point where the

picture tube socket ground lead is connected, and then (b)

touch the other end of the insulated clip lead to the picture

tube anode button, using an insulating handle to avoid

personal contact with high voltage.

4. Do not spray chemicals on or near this receiver or any of its

assemblies.

5. Unless specified otherwise in this service manual, clean

electrical contacts only by applying the following mixture to

the contacts with a pipe cleaner, cotton-tipped stick or

comparable nonabrasive applicator; 10% (by volume)

Acetone and 90% (by volume) isopropyl alcohol (90%-99%

strength)

CAUTION: This is a flammable mixture.

Unless specified otherwise in this service manual, lubrication

of contacts in not required.

6. Do not defeat any plug/socket B+ voltage interlocks with

which receivers covered by this service manual might be

equipped.

7. Do not apply AC power to this instrument and/or any of its

electrical assemblies unless all solid-state device heat sinks

are correctly installed.

8. Always connect the test receiver ground lead to the

receiver chassis ground before connecting the test receiver

positive lead.

Always remove the test receiver ground lead last.

9.

Use with this receiver only the test fixtures specified in this

service manual.

CAUTION: Do not connect the test fixture ground strap to

any heatsink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged

easily by static electricity. Such components commonly are

called

Electrostatically Sensitive (ES) Devices.

Examples of

typical ES devices are integrated circuits and some fieldeffect

transistors and semicounductor "chip" components. The

following techniques should be used to help reduce the

incidence of component damage caused by static by static

electricity.

1. Immediately before handling any semiconductor component

or semiconductor-equipped assembly, drain off any

electostatic charge on your body by touching a known earth

ground. Alternatively, obtain and wear a commercially

available discharging wrist strap device, which should be

removed to prevent potential shock reasons prior to

applying power to the unit under test.

2. After removing an electrical assembly equipped with ES

devices, place the assembly on a conductive surface such 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

ES devices.

4. Use only an anti-static type solder removal device. Some

solder removal devices not classified as "anti-static" can

generate electrical charges sufficent to demage ES devices.

5. Do not use freon-propelled chemicals. These can generate

electrical charges sufficient to damage ES devices.

6. Do not remove a repalcement ES device from its protective

package until immediately before you are ready to install it.

(Most replacement ES devices are packaged with leads

electrically shorted together by conductive foam, aluminum

foil or comparable conductive material).

7. Immediately before removing the protective material from

the ieads of a replacement ES device, touch the protective

material to the chassis or circuit assembly into which the

device will be installed.

CAUTION:Be sure no power is applied to the chassis or

circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged

replacement ES devices. (Otherwise harmless motion such

as the bruching together of your clothes fabric or the lifting

of your foot from a carpeted floor can generate static

electricity sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and

appropriate tip size and shape that will maintan tip

temperature within the range or 500cF to 600cF.

2. Use an appropriate gauge of RMA resin-core solder

composed of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thorohly clean the surfaces to be soldered. Use a mall

wirebristle (0.5 inch, or 1.25cm) brush with a metal handle.

Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature.

(500cF to 600cF)

b. Heat the component lead until the solder melts.

c. Quickly draw the melted solder with an anti-static,

suction-type solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the

circuiboard printed foil.

6. Use the following soldering technique.

a. Allow the soldering iron tip to reach a normal

temperature (500cF to 600cF)

b. First, hold the soldering iron tip and solder the strand

against the component lead until the solder melts.

SERVICING PRECAUTIONS

- 5 -

c. Qulckly move the soldering iron tip to the junction of the

component lead and the printed circuit foil, and hold it

there only until the solder flows onto and around both the

component lead and the foil.

CAUTION: Work quickly to avoid overheating the circuit

board printed foil.

d. Closely inspect the solder area and remove any excess

or splashed solder with a small wire-bristle brush.

IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through

which the IC leads are inserted and then bent flat against the

circuit foil. When holes are the slotted type, the following

technique should be used to remove and replace the IC. When

working with boards using the familiar round hole, use the

standard technique as outlined in parapraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by

gently prying up on the lead with the soldering iron tip as the

solder melts.

2. Draw away the melted solder with an anti-static suction-

type solder removal device (or with solder braid) before

removing the IC.

Replacement

1. Carefully insert the replacement IC in the circuit boare.

2. Carefully bend each IC lead against the circuit foil pad and

solder it.

3. Clean the soldered areas with a small wire-bristle brush.

(It is not necessary to reapply acrylic coating to the areas).

"Small-Signal" Discrete Transistor

Removal/Replacement

1. Remove the defective transistor by clipping its leads as

close as possible to the component body.

2. Bend into a "U" shape the end of each of three leads

remaining on the circuit board.

3. Bend into a "U" shape the replacement transistor leads.

4. Connect the replacement transistor leads to the

corresponding leads extending from the circuit board and

crimp the "U" with long nose pliers to insure metal to metal

contact then solder each connection.

Power Output, Transistor Device

Removal/Replacement

1. Heat and remove all solder from around the transistor leads.

2. Remove the heatsink mounting screw (if so equipped).

3. Carefully remove the transistor from the heat sink of the

circuit board.

4. Insert new transistor in the circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heatsink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as

possible to diode body.

2. Bend the two remaining leads perpendicula y to the circuit

board.

3. Observing diode polarity, wrap each lead of the new diode

around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of

the two "original" leads. If they are not shiny, reheat them

and if necessary, apply additional solder.

Fuse and Conventional Resistor

Removal/Replacement

1. Clip each fuse or resistor lead at top of the circuit board

hollow stake.

2. Securely crimp the leads of replacement component around

notch at stake top.

3. Solder the connections.

CAUTION: Maintain original spacing between the replaced

component and adjacent components and the circuit board

to prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit

board will weaken the adhesive that bonds the foil to the circuit

board causing the foil to separate from or "lift-off" the board.

The following guidelines and procedures should be followed

whenever this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the

following procedure to install a jumper wire on the copper

pattern side of the circuit board. (Use this technique only on IC

connections).

1. Carefully remove the damaged copper pattern with a sharp

knife. (Remove only as much copper as absolutely

necessary).

2. carefully scratch away the solder resist and acrylic coating

(if used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and

carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away

copper pattern and let it overlap the previously scraped end

of the good copper pattern. Solder the overlapped area and

clip off any excess jumper wire.

At Other Connections

Use the following technique to repair the defective copper

pattern at connections other than IC Pins. This technique

involoves the installation of a jumper wire on the component

side of the circuit board.

1. Remove the defective copper pattern with a sharp knife.

Remove at least 1/4 inch of copper, to ensure that a

hazardous condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the

pattern break and locate the nearest component that is

directly connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of

the nearest component on one side of the pattern break to

the lead of the nearest component on the other side.

Carefully crimp and solder the connections.

CAUTION: Be sure the insulated jumper wire is dressed so

the it does not touch components or sharp edges.

DESCRIPTION OF CONTROLS

- 6 -

0

231

564

897

POWER

MENU/INDEX

PR+PR-

LIST/

INPUT

TEXT/MIX

SIZE

HOLD

POSITION

TIME REVEAL

PIP SLEEP

I/II

SSMPSM

Q.VIEW

PR

OK

VOL VOL

PR

TV/AV/PC

MUTE

M

i

All the functions can be controlled with the remote control handset.

Some functions can also be adjusted with the buttons on the side

panel of the set.

Remote control handset

Before you use the remote control handset, please install the bat-

teries. See the next page.

1. POWER

switches the set on from standby or off to standby.

2. NUMBER BUTTONS

switches the set on from standby and selects a programme.

3. MENU (or INDEX)

selects a menu.

selects an index page in the teletext mode (only TELETEXT

models).

4. DD/ EE(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

FF/ GG(Volume Up/Down)

adjusts the volume.

adjusts menu settings.

OK

accepts your selection or displays the current mode.

5. Q.VIEW

returns to the previously viewed programme.

6. TELETEXT BUTTONS (option)

These buttons are used for teletext.

For further details, see the ‘Teletext’ section.

7. I/II (option)

selects the language during dual language broadcast.

selects the sound output (option).

8. PSM (Picture Status Memory)

recalls your preferred picture setting.

9. SSM (Sound Status Memory)

recalls your preferred sound setting.

1

2

3

4

5

6

7

8

9

10

14

12

13

11

- 7 -

10. MUTE

switches the sound on or off.

11. TV/AV/PC

selects TV, AV or PC monitor mode.

clears the menu from the screen.

switches the set on from standby.

12. PIP BUTTONS (option) (PC mode only)

PIP

switches the sub picture on or off.

PR +/

-

selects a programme for the sub picture.

INPUT

selects the input mode for the sub picture.

POSITION

relocates the sub picture in up/down or left/right direction.

13. LIST

displays the programme table.

14. SLEEP

sets the sleep timer.

Note : In teletext mode, the PR+/-, Q.VIEW and LIST buttons are

used for teletext functions.

Battery installation

The remote control handset is powered by two AAA type batteries.

To load the batteries, turn the remote control handset over and

open the battery compartment. Install two batteries as indicated by

the polarity symbols ( and ) marked inside the compartment.

Note : To avoid damage from possible battery leakage, remove the

batteries if you do not plan to use the remote control handset for an

extended period of time.

+

-

0

2 31

5 64

8 97

POWER

MENU

PR+PR-

LIST/

INPUT

POSITION

PIP SLEEP

I/II

SSMPSM

Q.VIEW

PR

OK

VOL VOL

PR

TV/AV/PC

MUTE

1

2

3

4

5

7

8

9

10

14

12

13

11

- 8 -

1. MAIN POWER (ON/OFF)

switches the set on or off.

2. TV/AV/PC

selects TV, DVD, AV or PC monitor mode.

clears the menu from the screen.

switches the set on from standby.

3. MENU

selects a menu.

4. OK

accepts your selection or displays the current

mode.

5. FF/ GG(Volume Up/Down)

adjusts the volume.

adjusts menu settings.

6. DD/ EE(Programme Up/Down)

selects a programme or a menu item.

switches the set on from standby.

7. POWER/STANDBY INDICATOR (rr)

illuminates brightly when the set is in standby

mode.

dims when the set is switched on.

8. REMOTE CONTROL SENSOR

9. HEADPHONE SOCKET

Connect the headphone plug to this socket.

10. AUDIO/VIDEO IN SOCKETS (AV)

Connect the audio/video out sockets of exter-

nal equipment to these sockets.

S-VIDEO/AUDIO IN SOCKETS (S-Video)

Connect the video out socket of an S-VIDEO

VCR to the S-VIDEO socket.

Connects the audio out sockets of the S-

VIDEO VCR to the audio sockets as in AV.

Side panel

Back panel

6

S-VIDEOH/P

RLVIDEO

AV

AUDIO

(MONO)

9

PR VOL OK MENU TV/AV/PC ON/OFF

5

4

3

2

1

7

8

10

- 9 -

1. Application Object

This instruction is for the application to the LCD TV.

2. Notes

(1) This set uses an adapter, so connect the adapter and the

set correctly before adjustment.

(2) The adjustment must be performed under the correct

sequence.

(3) The adjustment must be performed in the circumstance of

25!5cC of temperature and 65!10% of relative humidity if

there is no specific designation.

(4) The input voltage of the receiver must keep 100~220V,

50/60Hz in adjusting.

(5) The set must be operated for 30 minutes preliminarily

before adjustment if there is no specific designation.

[‘Heat Run’ must be performed with the full white signal or TV

noise signal in the internal part of the set.

[ The time for ‘Heat Run’ can be changed owing to production

plan.

3. PC Input Mode Adjustment

3-1. Required Test Equipment

(1) A pattern generator being in proportion to VG819 ; Pattern

of 11 tones

(2) A Service remote control

3-2. Preparation for Adjustment

(1) Perform ‘Heat Run’ for more than 30 minutes in white

pattern.

(2) Connect the signal of pattern generator with LCD TV.

(3) Apply the gray signal of XGA(1024X768) 11 tones by

using VG819.

(4) In VSC mode,adjust the Auto gay from 0 to 1 by using

Vol(+) button.

ADJUSTMENT INSTRUCTION

- 10 -

3-3. Position of Mode Adjustment

Timing of Mode Table * H[dot]/V[line]

Mode

H_Total

H_Display

H_Blanking

H_Sync

H Polarity

H_Bp

H_Fp

H-Freq[KHz]

/Clk[MHz]

V_Total

V_Display

V_Blanking

V_Sync

V Polarity

V_Bp

V_Fp

VGA-60

800

640

160

96

NEG.

48

16

31.469

25.175

525

480

45

2

NEG

33

10

VGA-67

864

640

224

64

NEG.

96

64

35.0

30.24

525

480

45

3

NEG

39

3

VGA-72

832

656

176

40

NEG.

120

16

37.861

31.5

520

496

24

3

NEG

20

1

VGA-75

840

640

200

64

NEG.

120

16

37.5

31.5

500

480

20

3

NEG

16

1

VGA-85

832

640

192

56

NEG.

80

56

43.269

36.0

509

480

29

3

NEG

25

1

SVGA-56

1024

800

224

72

POS

128

24

35.156

36.0

625

600

25

2

POS

22

1

SVGA-60

1056

800

256

128

POS

88

40

37.879

40.0

628

600

28

4

POS

23

1

SVGA-72

1040

800

240

120

POS

64

56

48.077

50.0

666

600

66

6

POS

23

37

Mode

H_Total

H_Display

H_Blanking

H_Sync

H Polarity

H_Bp

H_Fp

H-Freq[KHz]

/Clk[MHz]

V_Total

V_Display

V_Blanking

V_Sync

V Polarity

V_Bp

V_Fp

SVGA-75

1056

800

256

80

POS

160

16

46.875

49.5

625

600

25

3

POS

21

1

SVGA-85

1048

800

248

64

POS

152

32

53.674

56.25

631

600

31

3

POS

27

1

XGA-60

1344

1024

320

136

NEG

136

160

48.363

65.0

806

768

38

6

NEG

29

3

XGA-70

1328

1024

304

136

NEG

144

24

56.476

75.0

806

768

38

6

NEG

29

3

XGA-75

1312

1024

288

96

POS

176

16

60.23

78.75

800

768

32

3

POS

28

1

MAC-75

1152

832

320

64

NEG

224

32

49.725

57.283

667

624

43

3

NWG

39

1

XGA-85

1376

1024

352

96

POS

208

48

68.677

84.997

808

768

40

3

POS

36

1

VGA350-70

800

640

160

96

POS

48

16

31.468

25.17

449

350

99

2

NEG

60

37

VGA350-85

832

640

192

64

POG

96

32

37.86

31.47

445

350

95

3

NEG

60

32

VGA400-70

800

640

160

96

NEG

48

16

31.46

25.17

449

400

49

2

POS

35

12

VGA400-85

832

640

192

64

NEG

96

32

37.86

31.5

445

400

45

3

POS

41

1

4. EDID(The Extended Display Identification Data)

EDID Table

5. Option1 data(200PR~A2 ST:1bit,SYS:2bit)

- 11 -

00

10

20

30

40

50

60

70

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00

14

81

01

26

00

FF

0B

50

40

01

30

32

FF

01

54

81

01

18

55

FF

01

BF

80

01

88

1E

FF

78

E8

01

36

46

FF

1F

80

01

00

0D

FF

17

31

10

01

0E

00

70

59

0E

01

C3

0A

30

E8

3B

01

F9

01

10

20

E5

C3

D9

01

15

01

00

20

D7

A0

45

01

64

00

20

3A

A3

59

01

19

1E

20

01

54

61

01

00

20

00

4C

59

01

40

00

20

00

97

71

01

41

00

24

59

01

00

FD

C8

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

0

1

0

1

0

1

0

1

0

1

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

SCART

0

1

0

1

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

SCART

0

1

0

1

- 12 -

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

SCART

0

1

0

1

0

1

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

SCART

1

0

1

0

1

0

1

- 13 -

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

SCART

1

0

1

0

1

0

1

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

01

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

0

1

2

3

SCART

1

0

1

0

1

0

- 14 -

OPTION

Data 200PR

TEXT

I/II SV TOP A2 ST SYS

248

249

250

251

252

253

254

255

1

0

1

0

1

2

3

0

1

2

3

SCART

1

6. Option2 data(ACMS~BBACK:1bit,LANG:3bit)

7. Option3 data(IIC AFT~CH+AU:1bit)

OPTION

Data ACMS VOL

0

1

2

3

4

5

6

7

0

1

0

1

0

1

HIDEV

0

1

0

1

0

1

0

1

OPTION

Data IIC AFT MD SAVE

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

0

1

0

1

0

1

MONO CH+AUS

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

8 No sound Defective Reset IC of IC603 1) Check volume and speaker

- Speaker Defective MSP340D of IC601 - Sound comes out only when being inputted into Audio

- Earphone Defective B+(8V,5V) of IC604,605. L/R

2) Check after replacing IC603

3) Replace IC601

4) Check and replace B+ of IC604,605.

9 Video color beat noise Earphone shield case being touched

Check the mould of shield and JA203, Replace shield case

Soldering IC301 and IC912 Re-soldering

1 Soft touch doesn’t Defective speaker wire 1) Make some space between the speaker wire and

function properly and inverter wire the Soft touch Board by sticking the speaker wire

to the guide hole of the cabinet.

2) Arrange working state of A1. correct working state of

the Shield case.

2 Soft touch doesn’t 1) Broken components and 1) Check Soft touch with eyes

function soldering of them Check and repair soldering

2) P2 connector error 2) Check and repair the P2 connector

3 No screen Input error of inverter connector 1) Bend the pin legs of P1 connector -> recheck them

2) Check and repair the IC804,805 SI4925

P502 and Pin 21 connector 1) Check and fix P902 connector

being slipped out 2) Check and fix the components at P902 LCD module

and at main board.

3) Check Pin21.

Cracked components and 1) Check and repair tuner board and main board

soldering at tuner board 2) Solder Q101,102.

4 Dark screen 1) Defective LCD lamp 1) Replace the inverter

2) Defective inverter 2) Replace the LCD lamp

3) Input error of inverter connector 2) Check the connector input.

- 15 -

TROUBLESHOOTING

1. General Features

2. PC Mode

No. Symptom Cause Check Point

Check Point

5 Screen noise Clock or phase being 1) Resettig is needed according to the video card of each

not able to be adjusted PC

2) Horizontal noise : adjust phase until no horizontal

noise occurres

3) Vertical noise : adjust clock in menu until no vertical

noise occurres

6 Screen position error Screen position error 1) Play the Auto Configure in Menu.

horizontally or vertically 2) Adjust horizontal and vertical position until the screen

displayes normally

7 Color beat noise Soldering D-SUB Jack of JA202 Recheck adn repair JA202,IC202

and IC202.

3. TV and external input

No. Symptom Cause

- 16 -

EXPLODED VIEW

P801

112

540

500

541

300 121

120

A4

400 430

420

410

530

310

560330

- 17 -

112 6304FLP006B LCD MODULE,LC151X01-C3P1 LG PHILPS TFT COLOR NON

120 6400VA0017A SPEAKER,T401SX-095K14 LG C&D 8 OHM 1.0/1.5W 81DB

121 4950V00067A METAL,SUPPORTER EGI SPEAKER HOLDER

300 3091V00A15L CABINET ASSEMBLY RZ-15LA31 NON ML012A FLATRON

310 5020V00552F BUTTON,CONTROL ABS, HF-380 7KEY #155

330 5020V00553D BUTTON,POWER NON 1 KEY SET

400 3809V00273S BACK COVER ASSEMBLY RZ-15A31 NON SET

3809V00A72C BACK COVER ASSEMBLY UK

410 4811V00015A BRACKET ASSEMBLY STAND 15LA30 NON .

420 4950V00063B METAL,SUPPORTER SUS HINGE FIXER

430 3581V00033A DOOR ASSY

3141VMNP15A CHASSIS ASSY,MAIN ML012A LGEIS (Italy) LGEES (Spain)

3141VMNP15C CHASSIS ASSY,MAIN ML012A LGEUK (UK)

3141VMNP15D CHASSIS ASSY,MAIN ML012A LGESW (North Europe)

500 3141VMNP15F CHASSIS ASSY,MAIN ML012A Video Lux (Bulgaria)

3141VMNP15H CHASSIS ASSY,MAIN ML012A LGEFS (France) LGEPT (Portugal)

3141VMNP15J CHASSIS ASSY,MAIN ML012A LGEMK (Hungary)

3141VMNP15N CHASSIS ASSY,MAIN ML012A LGEDG (Germany)

530 6871VSMA12A PWB ASSY,CONT

540 6633VA0003K INVERTER ASSEMBLY,12VOLT VOLT ECT ALPS4LAMP

541 4814V00228A SHIELD,CASE LCD 15INCH NON ET INVERTER(400CD)

560 6871VSMA13F PWB ASSEMBLY,POWER ML012A

6410VEH003A POWER CORD,M2511A-001 VOLEX VDE/SEMKO 1800MM BLACK

P801 6410VBH003A POWER CORD,MP5004 VOLEX BSI 1800MM

6410VAH002A POWER CORD,MP231 VOLEX IMQ 1800MM

EXPLODED VIEW PARTS LIST

No. PART NO. DESCRIPTION

REPLACEMENT PARTS LIST

LOCA. NO PART NO DESCRIPTION

Q105

Q106

Q107

Q1101

Q211

Q212

Q213

Q214

Q3

Q301

Q4

Q603

Q604

Q605

Q801

Q901

Q903

Q904

C101

C105

C107

C1101

C111

C113

C114

C115

C17

C20

C209

C21

C214

C216

C222

C223

C24

C25

C281

C302

C323

C334

C335

C336

C347

C354

C361

C362

C363

0TR387500AA

0TR150400BA

0TR387500AA

0TR150400BA

0TR387500AA

0CE476DH618

0CE106DK618

0CE687DD618

0CE107DD618

0CE227DD618

0CE105DK618

0CE476DF618

0CE107DF618

0CE107SF6DC

0CE225VK6DC

0CE106SF6DC

0CE476SF6DC

0CE227DD618

0CE226VF6DC

0CE107SF6DC

0CE227VF6DC

0CE106SF6DC

0CE476SF6DC

0CE106SF6DC

0CK224DF56A

0CE105CK636

TR,CHIP 2SC3875S(ALY) KEC

TR,CHIP 2SA1504S(ASY) KEC

TR,CHIP 2SC3875S(ALY) KEC

TR,CHIP 2SC3880S(ALY) KEC

TR,CHIP 2SC3881S(ALY) KEC

TR,CHIP 2SA1504S(ASY) KEC

TR,CHIP 2SC3875S(ALY) KEC

47UF STD 25V 20% FL TP 5

10UF STD 50V M FL TP5

680UF STD 10V 20% FL TP 5

100UF STD 10V M FL TP5

220UF STD 10V M FL TP5

1UF STD 50V M FL TP5

47UF STD 16V M FL TP5

100UF STD 16V M FL TP5

100UF MVG 16V M SMD R/TP

2.2UF MV 50V 20% R/TP(SMD) SMD

10UF MVG 16V 20% R/TP(SMD) SMD

47UF MVG 16V M SMD R/TP

220UF STD 10V M FL TP5

22UF MV 16V 20% R/TP(SMD) SMD

100UF MVG 16V M SMD R/TP

220UF MV 16V 20% R/TP(SMD) SMD

10UF MVG 16V 20% R/TP(SMD) SMD

47UF MVG 16V M SMD R/TP

10UF MVG 16V 20% R/TP(SMD) SMD

220000PF 2012 16V 10% R/TP X7R

1UF SHL,SD 50V M FM5 BP(D) TP

LOCA. NO PART NO DESCRIPTION

IC1

IC2

IC201

IC202

IC204

IC210

IC3

IC301

IC302

IC601

IC602

IC603

IC604

IC605

IC801

IC901

IC902

IC903

IC904

IC905

IC906

IC907

IC908

IC909

IC914

Q1

Q2

D1

D2

D601

D602

D801

D802

D805

LD1101

ZD101

IC913

IC802

IC803

IC804

IC805

Q101

Q102

0IZZVC0042C

0IAL241610B

0IAL242110A

0IPH740800M

0IPH860100B

0IKE780800B

0IFA752700A

0IIT323000D

0IHY100100A

0IMCRMN011D

0ISA428200A

0IKE704200J

0IMCRFA009A

0IMCRFA008A

0ITC786000A

0IMCRG2004B

0IPH806520A

0IPH743730E

0IZZVC0041B

0ISS416162C

0IPH740400G

0IAL241610A

0IMCRFA020A

0IMCRTH001A

0IFA270000A

0DD181009AB

0DL112100AB

0DZ330009BA

0TF492509AA

0TFVI80001A

0TFVI80005A

0TF492509AA

0TR150400BA

0TR387500AA

SDA555XFL 52P,DIP ST ML012A

AT24C16A-10PI-2.7 8PIN DIP ST EEPROM

AT24C21-10SI-2.5 8P,SOP TP 1K EEPROM

74F08D 14P SOIC R/TP QUAD 2-INPUT

TDA8601T 16P-SOP BK FAST BLANKING

KIA78L08BP(TA) TO-92 8V,150MA - - - -

KA75270Z 3 TP RE-SET IC MC-007

VPC3230D QA B4 80P QFP TRAY SOUND

LGTV1001 64P QFP BK PROGRESSIVE H-

MSP3410G QA B8 V3 MICRONAS 80P QFP

LA4282 12S 2CHX10W AUDIO AMP

KIA7042AF SOT-89 TP 4.2V VOLTAGE DETECTOR

KA78M08RTM, FAIRCHILD 2P D-PAK, R/TP REGULATOR IC

KA78M05RTM, FAIRCHILD 2P D-PAK, R/TP REGULATOR IC

SI786 28SSOP TP DUAL-OUTPUT POWER

JAGASM A4 SAGE 352BALL TRAY HIGHLY

80C652 40 PLCC ST 8-BIT

74HCT373D 20SOP R/TP ADDRESS LATCH

M27C512_10F1 DIP BK 512K ML012A

K4S161622E-TC80 50TSOP R/TP SDRAM

74HC04D HEX INVERTER 14P,SOP TP .

AT24C16N-10SI 8P SOIC ST EEPROM

RC1587DT_36 FAIRCHILD 3P TO252 DPAK R/TP 2.5V 3A

THC63LVDM83R THINE ELECTRONICS 56

P

2N7000TA TO-92, 3P TP LEVEL SHIFT 60V/0.2A

DIODE,SWITCHING KDS181 TP KEC - 85V 300MA

LED,SM3411(DL-11S2GN1) BK Y-GREEN -

DIODE,ZENER,HZT33(TP) HITACHI

FET,SI4925DY TP TEMIC 30V 6.1A SO-8

TR,VISHAY SI4808DY R/TP SO-8 30V 7.5A

TR,VISHAY SI4963DY R/TP SO-8 -20V 6.2A

FET,SI4925DY TP TEMIC 30V 6.1A SO-8

TR,CHIP 2SA1504S(ASY) KEC

TR,CHIP 2SC3875S(ALY) KEC

IC

DIODE

- 18 -

TRANSISTOR

CAPACITOR

For Capacitor & Resistors, the

charactors at 2nd and 3rd digit

in the P/No. means as follows;

CC, CX, CK, CN : Ceramic

CQ : Polyestor

CE : Electrolytic

RD : Carbon Film

RS : Metal Oxide Film

RN : Metal Film

RF : Fusible

- 19 -

LOCA. NO PART NO DESCRIPTION

C364

C365

C406

C418

C493

C494

C495

C610

C614

C618

C619

C620

C621

C622

C631

C632

C633

C635

C638

C639

C640

C643

C644

C645

C647

C648

C649

C650

C651

C652

C653

C654

C655

C801

C802

C803

C804

C805

C806

C807

C808

C814

C815

C817

C902

C904

C906

C909

C911

C915

C935

C939

0CE105CK636

0CK224DF56A

0CE476SF6DC

0CE107SF6DC

0CE106SF6DC

0CE107SF6DC

0CE107DF618

0CK224DF56A

0CE476DF618

0CE106DF618

0CE335DK618

0CE107DF618

0CE477DF618

0CE107DF618

0CE107DH618

0CE225DK618

0CQ1031N509

0CE477DF618

0CE476DF618

0CQ1031N509

0CE107DF618

0CK224DF56A

0CE476DK618

0CE477DF618

0CE687DD618

0CE227DH618

0CE107DH618

0CE475DK618

0CE106SF6DC

0CE107SF6DC

0CE106SF6DC

0CE107SF6DC

0CE476SF6DC

1UF SHL,SD 50V M FM5 BP(D) TP

220000PF 2012 16V 10% R/TP X7R

47UF MVG 16V M SMD R/TP

100UF MVG 16V M SMD R/TP

10UF MVG 16V 20% R/TP(SMD) SMD

100UF MVG 16V M SMD R/TP

100UF STD 16V M FL TP5

220000PF 2012 16V 10% R/TP X7R

47UF STD 16V M FL TP5

10UF STD 16V M FL TP5

3.3UF STD 50V 20% FL TP 5

100UF STD 16V M FL TP5

470UF STD 16V 20% FL TP 5

100UF STD 16V M FL TP5

100UF STD 25V M FL TP5

2.2UF STD 50V 20% FL TP 5

0.01U 100V K POLY TP

470UF STD 16V 20% FL TP 5

47UF STD 16V M FL TP5

0.01U 100V K POLY TP

100UF STD 16V M FL TP5

220000PF 2012 16V 10% R/TP X7R

47UF STD 50V M FL TP5

470UF STD 16V 20% FL TP 5

680UF STD 10V 20% FL TP 5

220UF STD 25V M FL TP5

100UF STD 25V M FL TP5

4.7UF STD 50V 20% FL TP 5

10UF MVG 16V 20% R/TP(SMD) SMD

100UF MVG 16V M SMD R/TP

10UF MVG 16V 20% R/TP(SMD) SMD

100UF MVG 16V M SMD R/TP

47UF MVG 16V M SMD R/TP

LOCA. NO PART NO DESCRIPTION

C946

C970

JA202

P1

P1101

P1101A

P1102

P1103

P2

P202

P3

P601

P602

L102

L1101

L802

L803

T801

JA201

JA203

JA206

SJ205

R219

R220

RA901

RA902

RA903

RA904

RA905

RA906

RA907

RA908

RA909

RA910

RA911

RA912

RA926

RA927

RA928

RA929

RA930

RA931

0CE476SF6DC

0CE107SF6DC

6630VGA001B

6630VF01810

6631V20014E

366-922F

366-921F

6631V25049H

6602V20005L

6602V25004C

366-932E

366-932C

366-932B

0LA0272K139

0LA0222K119

6140VB0004B

6140VB0004A

6170VTCA30A

6612VAH001A

6613V00008F

6612VCH003B

381-091B

0RD1200H609

0RRZVTA001A

47UF MVG 16V M SMD R/TP

100UF MVG 16V M SMD R/TP

CONNECTOR (CIRC),68114-1522 15PIN 2.29MM

CONNECTOR (CIRC),YEONHO 10P 1.25MM

CONNECTOR ASSY,12P 2.0MM 300MM H-B UL1061

CONNECTOR (CIRC),2.5MM 7P GIL-G LG CABLE

CONNECTOR ASSY,4P 2.5MM 200MM H-B

CONNECTOR (CIRC),2.0MM 12P GIL-S LG CABLE

CONNECTOR (CIRC),GT250 LGC 4 2.5 .

CONNECTOR (CIRC),2.5MM 6P GIL-G LG CABLE

CONNECTOR (CIRC),2.5MM 4P GIL-G LG CABLE

CONNECTOR (CIRC),2.5MM 3P GIL-G LG CABLE

INDUCTOR,AXIAL LEAD 27UH K 4X10.5 TP

INDUCTOR,AXIAL LEAD 22UH K 2.3*3.4 TP

COIL,CHOKE 26UH 1UEWPHY 22.5TURN

COIL,CHOKE 9.5UH 1UEWPHY 13.5TURN

TRANSFORMER,SMPS EPC 13-Z 320UH DC-DC CONV.

JACK,PHONE HEC3900-010110 HOSIDEN DC (7) BK

JACK ASSY,PMJ014F E/P(ST)+S-VHS+3P H6.5 GOLD COLOR

JACK,PHONE PEJ012C H=6.5 STEREO 1P W/O S/W WHITE

JACK,SCART S-091B UGCOM SCART 21

120 OHM 1/2 W 5.00% TA52

MNR-14-E0A-J-101 R OHM 100 OHM 5% CHIP 100 OHM*4

For Capacitor & Resistors, the

charactors at 2nd and 3rd digit

in the P/No. means as follows;

CC, CX, CK, CN : Ceramic

CQ : Polyestor

CE : Electrolytic

RD : Carbon Film

RS : Metal Oxide Film

RN : Metal Film

RF : Fusible

COIL & TRANSFORMER

JACK

CONNECTOR

RESISTOR

- 20 -

LOCA. NO PART NO DESCRIPTION

SW1101

SW1102

SW1103

SW1104

SW1105

SW1106

SW1107

L101

L103

L104

L106

L107

L2

L201

L202

L204

L205

L206

L207

L209

L210

L211

L212

L276

L277

L3

L301

L302

L303

L304

L601

L602

L603

L604

L801

L804

L805

L901

L902

L904

L905

L908

L911

L913

L917

L918

X1

6600VM1001A

140-313A

6210TCE001G

6210TCE001A

6210TCE001G

6210TCE001A

6210TCE001G

6210TCE001A

6210TCE001G

156-A01L

SWITCH,PUSH SDKLA1 UL/CSA 250V 5A VERTICAL 460G

SWITCH,TACT 2LEAD 100G(TA) 5V 0.001A

SWITCH,TACT 2LEAD 100G(TA) NON 5V 0.001A

FILTER(CIRC),HH-1M3216-501 CERATEC 3216MM

FILTER(CIRC),HB-1S2012-080JT CERATEC 2012MM

FILTER(CIRC),HH-1M3216-501 CERATEC 3216MM

FILTER(CIRC),HB-1S2012-080JT CERATEC 2012MM

FILTER(CIRC),HH-1M3216-501 CERATEC 3216MM

FILTER(CIRC),HB-1S2012-080JT CERATEC 2012MM

FILTER(CIRC),HH-1M3216-501 CERATEC 3216MM

FILTER(CIRC), HH-1M3216-501 CERATEC 3216MM

FILTER(CIRC),HH-1M3216-501 CERATEC 3216MM

RESONATOR,CRYSTALHC49U 6.000MHZ 30PPM 16PF

LOCA. NO PART NO DESCRIPTION

X301

X601

X901

A1

A2

A4

PA1101

6202VDT002E

156-A02M

6202VDT002B

3828VA0335D

3828VA0335F

3828VA0335G

6710V00061U

6634B00043B

6726VV0006D

6700PF0002A

6700MF0003A

RESONATOR,CRYSTAL SX-1SMD 20250000HZ 30PPM 16PF

RESONATOR,CRYSTAL18.432MHZ 30PPM 10PF

RESONATOR,CRYSTALMSX-1SMD 14.318MHZ 30PPM 16PF

MANUAL,OWNERS UK/WTY LG EN 061U TX

MANUAL,OWNERS IS/REG LG IT 061U TX

MANUAL,OWNERS ES/PT LG SP/PO 061U TX 025A/B/C/016C 026C

REMOTE CONTROLLER FULL SPEC

ADAPTER,AC-DCMSAD6012SE 12V 5.0A 60W

REMOTE CONTROLLER RECEIVER 38.0KHZ

TUNER,TAFH-S321D LG PAL FS 4SYS

TUNER,TAFH-Z342D LG MULTI FS

MISCELLANEOUS

ACCESSORIES

CRYSTAL & FILTER

For Capacitor & Resistors, the

charactors at 2nd and 3rd digit

in the P/No. means as follows;

CC, CX, CK, CN : Ceramic

CQ : Polyestor

CE : Electrolytic

RD : Carbon Film

RS : Metal Oxide Film

RN : Metal Film

RF : Fusible

SWITCH

LG RZ-15LA31 User manual

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