LG CT-29M30N Service Manual Download Page 26

JW1A

MAIN PWB ASSY

P602

P601

P181

PV01

P05A

P01

P03B

P05B

P402A

PP802

P401

P03A

P802

P801

CPT PWB

PP803

PP801

SPEAKER CONNECTOR   

 D-COIL           

CABINET

WIRING DIAGRAM

VCD PROCESSOR

VDP3120

AUDIO AMP

LA4282 

IC601

H/P

ICN02

TDA2822M

S-Video

IN

Y/V3 C

AV3-IN

A3

V3

 (R,L)

R      L

HP Amp.

3

34/37/38/39

31

60/61/62/63/64

59

32

50

45/46/47/48

4

RF/V1/V2/V3

SDA

SCL

EXT.RGB_IN

Y/C IN & V1/2/3/4

EW

H-out

Va

VM & RGB

EEPROM

24C16

IC02

CPT DRIVE AMP.

TDA6101Q * 3

IC901/2/3

LOCAL KEY

EYE 

SENSOR

PRE-
AMP.

IR

TILT

HIC181

SDA
SCL

IF1

TUNER

5V

33V

AGC

L/L    S/W

SAW 

±

SAW 

SAW I

IF2

Sound Processor

MSP3410D/3460G  ICN01

  VIF/SIF 

IC101  TDA4470

27

28

1

2

23

3

13

24

25

7

6

14

SiF1

SiF2

S_SW V_SW

V_SW

ViF

FM

AM

47

44

30 31 42 41

27 28 40 39

38

37

24/25

21/22

A1_OUT A1_IN

A2_IN

A2_OUT

A3_IN

1

3

2

6

1

3

2

6

AV1_SCART/PHONE

AV2_SCART/PHONE

R(0) L(0) R(I) L(I)

R(0) L(0) R(I) L(I)

5V   

OTHER L (M)

AM

FM

RGB
OUT

A/V S/W

CXA2040Q

SCREEN

FOCUS

V/M

V_DY

VERTICAL AMP

LA7845/40 IC301

FBT

T402

DYNAMIC

FOCUS

HDT

KIA4558

210V

H / T

HV

14V

-14V

VA

H-OUT

POWER CTL.

STR-F6656

IC801

ST_BY(2W)

POWER

(OPTION)

AC_IN

110~240V

5V REG

IC851

ST-BY 5V

K3958M / K6263K(w/M)

L9654M

K9350M / K9253M(w/M)

13V

LA7016

GAME

SOUND

SOUND BOARD

D-FOCUS

 BOARD

RGB

V2(MNT) OUT

RF OUT

V1(TV) OUT

TVTXT(MICOM + TEXT)

SDA5555/5521  IC01

TXT RGB

38/39/40/41

CVBS

12

41/42/43/44

TXT RGB

SDA0
SCL0

SDA
SCL

SDA0
SCL0

EXT.
RGB

PIP IC

SDA9489

PIP or VCD 

BOARD

5V REG

IC854/5

9V REG

IC852/3

3.3 V REG

IC04

13V

9V

5V

TUNER 33V

SOUND Vcc

B+

28 S-VIDEO SEL.

BLOCK DIAGRAM

TROUBLESHOOTING GUIDE

C804

F(P)801, SW(P)801, T1111, 

T801, R802, DB801.

pin4

T802, R809, D802.

18V

ICP(V)01.

ICP(V)01.

Q401, Q402, T401.

(OPTION)

33V

F854, D861, R405.

D850, L853, T402.

3V

pin 32 of IC01.

3.3V

0V

IC01, FR403, FR413, 

D405, D406, IC301, 

ICP(V)01.

IC852(3), IC854(5), FR406, 

D408, D858, Q856.

Q05, IC851, IC802(3), IC856.

37~39

12

ICP(V)01, Q124

CPT PCB ASSY.

ICP(V)01.

ICP(V)01.

ICP(V)01.

P901.

Q2902~2910, VM COIL.

FR403, FR413, D405, D406.

ICP(V)01.

ICP(V)01.

IC301, D301.

ICP(V)01.

ICP(V)01.

IC302.

R408.

Q302, Q303.

D401, D402, C405.

FR402, D404, IC302.

ICP(V)01, QP(V)04~06.

at pin 44 of ICP(V)01.

at pin 12 of IC01.

at pin 41~43 of ICP(V)01.

ICP(V)01.

QP(QV)02, ICP(V)01.

3V

P502A.

'

pin 10 of IC601(SOUND AMP).

F851, FB853, D850.

IC601.

8

ICN01.

ICN01.

Check the Waveform

at pin 44 of ICN01.

Q601, IC01.

Z102, IC101.

Z102, Z103, IC101.

XN01, ICN01.

IC601, QN01~02, P605(6)A.

5V

0V

Check/Replace

XN01, ICN01.

Check the voltage

at pin 3 of IC101.

NO

* AM Sound(for FRENCH)

NORMAL

ICN01.

ICN01.

1, 3

ICN02.

ICN02.

P605(6)A, 

No

No

Yes

Yes

Abnormal

Abnormal

Normal

Normal

Is there video signal at

pin 13 of ICP101?

Check/Replace ICP101.

Check I

2

C Bus.

Is there video signal at

pin 28 of ICP102?

Check pins15~18

of ICP102.

NO PIP 

Check CP131.

Check/Replace ICP102.

Check I

2

C BUS.

Check pins45~48 

of ICP01.

Check RP108, 109, 110, 112, 114, 

CP17~19.

Check/Replace

ICP01.

'

9

7

12

L102

F854, D861, R104, ZD101.

ICP(V)01

IC01

15

Check/Replace IC01, IC02.

Check I

2

C BUS.

ICP(V)01, Q124.

Service Sheet of MC-007A
P/N: 3854VA0071A-S2
2000.06.15

Summary of Contents for CT-29M30N

Page 1: ...CE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 007A MODEL CT 29M30N X PT MODEL CT 29M32 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...NTS Contents 2 Safety Precautions 3 Specifications 4 Control Descriptions 5 Disassembly Instructions 8 Adjustment Instructions 9 Exploded View 14 Exploded View Parts List 15 Replacement Parts List 16 SVC Sheet ...

Page 3: ...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...

Page 4: ...t 1 Full A V in out Scart 2 Half Audio out A V in out External In Output Audio In 0 5Vrms 3db over 10Kohm Audio Out 0 5Vrms 3db below 1Kohm Video In Out 1Vp p 3db 75ohm R G B In 0 7Vp p 3db Feature Auto programme Manual programme SVM Scanning Velocity Modulation Digital Eye Digital Comb Filter Auto Sleep Dynamic Focus Programme Editing PSM Picture Status Memory CTI Double Window Teletext TOP FLOF ...

Page 5: ...o cassette recorder 6 SSM Sound Status Memory recalls your preferred sound setting 7 PSM Picture Status Memory recalls your preferred picture setting 8 EYE option switches the eye function on or off 9 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 10 MUTE switches the sound on or off 11 ARC Aspect Ratio Control changes the picture format 12...

Page 6: ... in clockwise direction 9 4 PIP switches on or off the 9 or 4 sub pictures 17 SLEEP sets the sleep timer 18 SWAP or Q VIEW returns to the previously viewed programme COLOURED BUTTONS These buttons are used for teletext only TELETEXT models or programme edit Battery installation The remote control handset is powered by two AAA or AA type bat teries To load the batteries turn the remote control hand...

Page 7: ...Connect the audio video out sockets of exter nal equipment to these sockets S VIDEO AUDIO IN SOCKETS S AV option Connect the video out socket of an S VIDEO VCR to the S VIDEO socket Connect the audio out sockets of the S VIDEO VCR to the audio sockets as in AV3 11 HEADPHONE SOCKET option Connect the headphone plug to this socket 12 EYE option adjusts picture according to the surrounding conditions...

Page 8: ... CPT Removal 1 Pull out the CPT board from the CPT neck 2 Place the front cabinet on soft material not to mar the front surface or damage control knobs 3 Remove 4 screws securing the picture tube mounting brackets to the front cabinet 4 Carefully separate CPT from the front cabinet PICTURE TUBE HANDLING CAUTION Due to high vacuum and large surface area of picture tube great care must be exercised ...

Page 9: ...e 2 4 0 05Vdc RF AGC Automatic Gain Control Adjustment 1 Input PAL B G 05 CH 2 Connect Multimeter to TP2 J15 AGC adjustment point 3 Adjust VR121 until the voltage of Multimeter becomes 2 5 0 1V Screen Voltage Adjustment 1 Tune the RF Modulator to receive a PAL or SECAM signal 2 Press MIX button on remote controller for Service to get into the Screen Adjust Mode 3 Adhere the Color Analyzer on the W...

Page 10: ...that a digital circle pattern looks like exact circle EP East west Parabolar Adjust so that middle portion of the outermost left and right vertical line looks like parallel with vertical lines of the CPT EC East west Coner Adjust so that the vertical line at every 4 corners of the screen looks like parallel with the vertical lines of the CPT ET East west Trapezium Adjust to make the length of top ...

Page 11: ... 0 1FFH 0 1FFH 0 01FF 0 01FF 00C8 0190 0065 000B 0007 0008 0005 0003 0001 00F0 0158 Range 29 Flat 29 S Flat Menu FP NP SP S1 VOL S2 VOL 0 127 0 127 0 127 0 127 0 127 0011 0045 001E 0042 0042 Range DATA Mode CONTRAST BRIGHT COLOR SHARPNESS 90 50 50 50 100 55 60 60 60 60 40 40 50 60 40 30 STANDARD DYNAMIC MILD GAME Menu CR CG CB RG GG BG 0 511 0 511 0 511 0 511 0 511 0 511 50 50 50 370 370 370 Range...

Page 12: ...V MONO VOL H PH DGS TILT 200PRO AV2 HOTEL KEY SYS M VOL OSD T LAN 1 GAME TEXT TOP China Australia EYE Turbo Search SCART STEREO I II MONO Middle East Africa India VOL H Phone Degaussing TILT China Only Back JACK 2EA HOTEL 0 X X X Australia Only X X X X X X Normal VOL X X Back JACK 1EA X Option 1 Option 2 Option 3 Option 4 Menu ...

Page 13: ... 13 MEMO ...

Page 14: ... 14 112 170 913 150 153 510 943 400 600 120 121 300 310 320 330 P801 540 530 520 EXPLODED VIEW ...

Page 15: ...E 510 6871VSM728A PWB ASSY CPT 007A W O SVM STV5109 SET 6871VSM820C PWB ASSY CPT 007A MT 520 6871VMM618V PWB ASSY MAIN CT 29M30PT 6871VMM618U PWB ASSY MAIN CT 29M30N 6871VMM612P PWB ASSY MAIN CT 29M30N LGEAP 6871VMM736A PWB ASSY MAIN CT 29M30X RANKINE 6871VMM612R PWB ASSY MAIN CT 29M32 NAGHI 6871VMM736P PWB ASSY MAIN CT 29M30N LGEMT 530 6871VSM588C PWB ASSY W PIP SCART OPT 6871VSM819B PWB ASSY W O...

Page 16: ...CRIPTION D850 ICP01 ICN01 ICV01 IC01 IC02 ICP02 ICN02 ICV02 IC03 ICN03 IC04 ICN05 ICP101 IC101 IC102 HIC181 ICP102 ICP103 IC301 IC302 IC601 IC801 IC802 IC803 IC851 IC853 IC855 IC856 IC901 Q07 Q08 D01 D02 D03 D04 D101 D121 D122 D301 D302 D401 D402 D403 D404 D405 D406 0ISK100300A 0IIT312000A 0IIT341000J 0IIT340050A 0IIT312000A 0ICTMIH002B 0ICTMIH001A 0IAL241610B 0IFA754207A 0ISG282200A 0IFA754207A 0...

Page 17: ...TP 5 10000P 16V M Y TA52 LOCA NO PART NO DESCRIPTION C03 C04 C05 C06 C08 C09 C10 C11 C14 C17 C18 C19 C20 C21 C22 C24 C25 C26 C27 C29 C30 C31 C32 C33 C34 C101 C103 C104 C105 C106 C108 C109 C110 C112 C113 C114 C115 C121 C122 C123 C124 C125 C126 C127 C128 C129 C130 C131 C132 C134 C135 C136 0CX6200K409 0CX6200K409 0CN1030F679 0CE107DD618 0CN1030F679 0CN1030F679 0CE106DK618 0CE106DK618 0CN1040K949 0CN1...

Page 18: ...02 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C802 C803 C804 C806 C807 C808 C809 C811 C813 C814 C815 C817 C854 C855 C856 C857 C858 C859 C860 C861 C862 C863 C864 C866 C867 C870 C871 C872 C873 C901 0CE228DF618 181 010B 0CK2710W515 0CE106DR618 0CQ1531N509 0CQ1531N509 0CQ1531N509 0CN1030F679 0CE107DH618 0CE684DK618 0CQ5621N509 0CE107DH618 0CE684DK618 0CQ5621N509 0CE107DH618 0CQ1041N50...

Page 19: ...CP12 CP14 CP16 CP17 CP18 CP19 CP20 CP22 CP29 CP31 CP32 CP36 CP38 CP40 CP41 CP44 CP45 CP108 CP109 CP110 CP111 CP112 CP121 CP123 CP125 CP128 CP130 CP131 CP139 CP140 CP142 CP143 CP145 CP146 CP148 CV06 CV10 CV11 CV12 CV14 CV16 CV20 CV29 CV31 CV36 CV38 CV40 0CX5600K409 0CE107DF618 0CE106DF618 0CE335DK618 0CQ3321N509 0CQ3331N509 0CE106DF618 0CE335DK618 0CN2230H949 0CN2230H949 0CN2230H949 0CE106DF618 0CE...

Page 20: ...P01 LP02 LP03 LP04 LP05 LP102 LP104 LP105 LP106 LP107 LV01 LV02 LV03 LV05 T401 T402 T802 P605B P901 P902 P1203 F851 F854 F855 FR401 FR402 FR403 FR406 FR413 J70 R01 R02 R03 R04 R05 R06 R07 R08 R09 0LA0472K119 0LA0472K119 0LA0472K119 0LA0102K119 0LA1000K119 0LA1000K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0471K119 0LA0102K119 0LA0471K119 0LA0472K119 0LA0102K119 0LA0102K119 ...

Page 21: ... OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 00 TA52 4 7K OHM 1 6 W 5 00 TA52 4 7K OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 00 TA52 100 OHM 1 6 W 5 00 TA52 LOCA NO PART NO DESCRIPTION 0RD0332F609 0RD0512F609 0RD0512F609 0RS5600H609 0RD2202F609 0RD1002F609 0RS0102J607 0RD2201F609 0RD4702F609 0RD5601F609 0RD5601F609 0RD1001F609 0RD5601F609 0RD5601F609 0RD4702F609 0...

Page 22: ... R610 R611 R612 R801 R802 R803 R804 R805 R806 R807 R808 R809 R821 R822 R852 R858 R860 R862 R863 R864 R865 R866 R867 R868 R869 R870 R901 R902 R903 R904 R905 R906 R907 R908 R912 R913 R914 R915 R916 R917 R918 R919 R920 R921 R922 R924 0RD1001F609 0RF0331H609 0RD6802F609 0RD1500F609 0RD1001F609 0RKZVTA001K 180 822M 0RD0561H609 0RD4701F609 0RD1001F609 180 A01B 0RK8204H609 0RKZVTA001C 0RD3001F609 0RS4702...

Page 23: ...1 6 W 5 00 TA52 1K OHM 1 6 W 5 00 TA52 330 OHM 1 6 W 5 00 TA52 EVN DJAA03 B103 SEMI FIX H TA SPARK GAP AG20PT 152F L3N S 23 SPARK GAP AG20PT 152F L3N S 23 SPARK GAP AG20PT 152F L3N S 23 SPARK GAP AG20PT 152F L3N S 23 SWITCH TACT SKHV17910B NON 12V SWITCH TACT SKHV17910B NON 12V SWITCH TACT SKHV17910B NON 12V SWITCH TACT SKHV17910B NON 12V SWITCH PUSH SDKEA3 IEC 250V 8A HORIZO FILTER CIRC XT565M FI...

Page 24: ...Video Audio C P No 3854VA0071A S1 2000 06 15 ...

Page 25: ...P01 C2 P101 A5 P181 A3 P601 A2 P602 A1 P02A F1 P03A C1 P04A C1 P05A B1 P06A B1 P401A F4 P401B F4 P401C F4 P401D F4 P402A F5 P403A E5 P404A F5 P502A A3 P503A B3 P504A C3 P603A D5 P604A D5 P605A A2 P606A A3 P801A G1 P801B G1 P802A E1 P802B E1 PA02 F1 Q02 B3 Q03 C3 Q04 C3 Q05 D1 Q06 E1 Q07 B1 Q08 A1 Q101 B5 Q102 B5 Q103 A5 Q121 B5 Q122 C4 Q123 C4 Q124 C5 Q125 A4 Q126 B4 Q127 A4 Q201 B5 Q221 D5 Q301 D...

Page 26: ...P or VCD BOARD 5V REG IC854 5 9V REG IC852 3 3 3V REG IC04 13V 9V 5V TUNER 33V SOUND Vcc B 28 S VIDEO SEL BLOCK DIAGRAM TROUBLESHOOTING GUIDE C804 F P 801 SW P 801 T1111 T801 R802 DB801 pin4 T802 R809 D802 18V ICP V 01 ICP V 01 Q401 Q402 T401 OPTION 33V F854 D861 R405 D850 L853 T402 3V pin 32 of IC01 3 3V 0V IC01 FR403 FR413 D405 D406 IC301 ICP V 01 IC852 3 IC854 5 FR406 D408 D858 Q856 Q05 IC851 I...

Page 27: ...SVC SHEET 3854V A0071A S1 SVC SHEET 3854V A0071A S2 ...

Page 28: ...Apr 2001 Printed in Korea P NO 3828VD0077Q ...

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