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CONTENTS

CONTENTS .............................................................................................. 2

PRODUCT SAFETY ..................................................................................3

SPECIFICATION ........................................................................................4

DESCRIPTION OF CONTROLS .............................................................. 5

ADJUSTMENT INSTRUCTION .................................................................8

TROUBLE SHOOTING ............................................................................11

BLOCK DIAGRAM...................................................................................12

PRINTED CIRCUIT BOARD ....................................................................13

WIRING DIAGRAM ..................................................................................17

EXPLODED VIEW .................................................................................. 18

EXPLODED VIEW PARTS LIST ..............................................................19

REPLACEMENT PARTS LIST ............................................................... 20

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

Содержание RZ-23LZ20

Страница 1: ... ST DUAL LCD TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS ML 027C MODEL RZ 23LZ20 website http biz LGservice com e mail http www LGEservice com techsup html ...

Страница 2: ...FETY 3 SPECIFICATION 4 DESCRIPTION OF CONTROLS 5 ADJUSTMENT INSTRUCTION 8 TROUBLE SHOOTING 11 BLOCK DIAGRAM 12 PRINTED CIRCUIT BOARD 13 WIRING DIAGRAM 17 EXPLODED VIEW 18 EXPLODED VIEW PARTS LIST 19 REPLACEMENT PARTS LIST 20 SVC Sheet ...

Страница 3: ... on position 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 Any o...

Страница 4: ...200 Program Option O Speaker impedance 8 ohm O External In Output Audio In Out 0 5V 0 1 Video In Out 1Vpp 0 15 R G B In 768 pixel Vertical 1280 pixel Horizontal O Feature Funtion Teletext TOP FLOF LIST 10 page Remocon NEC code AV Input 2 Side and Rear S AV Input 1 Side Component Input 1 Rear option PERI TV Connector Full Scart 1 Rear option EU RGB INput 1 D sub 15 pin D Sub Audio Input 1 Stereo 2 ...

Страница 5: ...table 4 EXIT exits from each mode 5 D D E E Programme Up Down selects a programme or a menu item switches the set on from standby F F G G Volume Up Down adjusts the volume adjusts menu settings OK accepts your selection or displays the current mode 6 NUMBER BUTTONS switches the set on from standby and selects a programme 7 SSM Sound Status Memory recalls your preferred sound setting 8 PIP BUTTONS ...

Страница 6: ...Note If you turn on the TXT in PIP some PIP keys such as POSI TION PIP INPUT or PIP PR etc will work as TXT keys Battery installation 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 POWER MUTE TV AV TV PC I II LIST PR PR VOL OK 1 2 3 4 5 6 7 8 9 SSM PSM 0 VOL EXIT MENU ARC PIP TEXT POSITION ...

Страница 7: ...CONTROL SENSOR 8 LED Light Emitting Diode DISPLAY illuminates brightly when the set is switched on POWER STANDBY indicator MONO indicator STEREO indicator DUAL indicator DPM indicator 9 HEADPHONE SOCKET Connect the headphone plug to this socket 10 AUDIO VIDEO IN SOCKETS AV3 Connect the audio video out sockets of exter nal equipment to these sockets S VIDEO AUDIO IN SOCKETS S VIDEO Connect the vide...

Страница 8: ...narily 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 MSPG 925LTH or A pattern generator Gray pattern of 16 tones 2 A adjustment communicator 3 2 Preparation for Adjustm...

Страница 9: ... 1040 240 120 POS 64 56 48 077 50 0 666 66 6 POS 23 37 Mode H_Display V_Display V_Frequency H_Total H_Blanking H_Sync H_Polarity H_Vp H_Fp H Freq KHz Clk MHz V_Total V_Blanking V_Sync V_Polarity V_Bp V_Fp SVGA 75 800 600 75 1056 256 80 POS 160 16 46 875 49 5 625 25 3 POS 21 1 SVGA 85800 600 85 1048 248 64 POS 152 32 53 674 56 25 631 31 3 POS 27 1 XGA 60 1024 768 60 1344 320 136 NEG 136 160 48 363 ...

Страница 10: ...rk 100 Program 200 Program TEXT Off TEXT On CH Sound Non Memory CH Sound Memory TOP OFF TOP ON SCART OFF SCART ON FM Stereo Dual FM Mono GB I DK M GB I DK L Reserved Reserved OSD Lang HDEV VOL ACMS PIP Text Option Code 0 1 0 1 0 1 0 1 0 1 2 3 4 Function Remark PIP Text PIP Text not display ACMS On ACMS Off OFF Middle Asia Vol On HDEV Off HDEV ON Eng only Eng Deut Fran Ital Esp 2 6 EU5 Netherlands ...

Страница 11: ...heck and repair tuner board and main board soldering at tuner board 2 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 11 TROUBLESHOOTING 1 General Features 2 PC Mode No Symptom Cause Check Point No Symptom Cause Check Point Check Point 1 Screen noise Clock or phase being 1 Resettig i...

Страница 12: ...BLOCK DIAGRAM 12 ...

Страница 13: ... 13 PRINTED CIRCUIT BOARD MAIN TOP ...

Страница 14: ... 14 MAIN BOTTOM ...

Страница 15: ... 15 POWER TOP POWER BOTTOM ...

Страница 16: ... 16 SIDE AV CONTROL LED ...

Страница 17: ...CABLE S STICK CONNECTOR CIRC WAFER 2 5MM 6P GIL G LG CABLE S STICK CONNECTOR CIRC WAFER 2 5MM 12P GIL G LG CABLE CONNECTOR CIRC WAFER 2MM 7PIN GIL S CONNECTOR CIRC WAFER 2 0MM 8P GIL S LG CABLE S CONNECTOR CIRC WAFER 2 0MM 12P GIL S LG CABLE STRAIGHT CONNECTOR CIRC WAFER 2 5MM 4P GIL G LG CABLE R A B TO C CONNECTOR CIRC WAFER 2 5MM 4P GIL G LG CABLE R A B TO C CONNECTOR ASSEMBLY 7P 2 0MM 400MM H B...

Страница 18: ... 18 EXPLODED VIEW 250 112 520 550 500 320 210 220 310 400 430 230 240 530 560 300 120 120 340 350 330 360 370 380 330 ...

Страница 19: ...SSY SPCC CR RZ 23LZ20 340 4810V00767A BRACKET STAND 20LA60 ML012B NON HINGE FRONT 350 4810V00768A BRACKET STAND 20LA60 ML012B NON HINGE COVER 360 4810V00766A BRACKET DECO 20LA60 ML012B NON STAND DECO 370 4810V00769A BRACKET STAND 20LA60 ML012B NON BASE 380 4950V00133A METAL STAND BASE 400 3809V00359A BACK COVER ASSEMBLY RZ 23LZ20 NON 430 3500V00068A BOARD AV RZ 23LZ20 ML027A COVER REAR 520 6871VMM...

Страница 20: ...SVC SHEET 3854VA0128A ...

Страница 21: ...1 IC502 IC503 IC504 IC510 IC555 IC600 IC601 IC603 IC604 IC701 IC702 IC801 IC803 IC804 IC805 IC806 IC807 IC808 IC888 IC915 IC940 IC950 IC951 IC954 IC955 Q1 Q2 Q830 IC804 IC805 Q101 Q102 Q103 Q104 Q106 Q107 0IZZVC0068A 0IFA752700A 0IAL242110A 0IMCRFA022A 0IPH860100B 0IAL241610B 0IIT323000E 0IIN298003A 0IMCRPW001B 0IMCRTI020A 0IMCRAL006A 0IMCRTI002A 0IMCRGN001B 0IMCRPU001A 0IMCRTI022D 0IMCRMN001C 0IM...

Страница 22: ...TION C301 C303 C305 C315 C316 C328 C332 C333 C336 C337 C338 C341 C343 C347 C349 C351 C353 C546 C583 C584 C585 C59 C6 C60 C603 C61 C613 C615 C616 C617 C619 C62 C620 C621 C622 C624 C626 C627 C628 C63 C630 C634 C643 C644 C645 C650 C662 C665 C666 C668 C677 C711 0CK224DF56A 0CK224DF56A 0CK224DF56A 0CK224DF56A 0CE107DD618 0CE106DF618 0CE476DF618 0CE107DF618 0CK224DF56A 0CE226DF618 0CE107DF618 0CK224DF56...

Страница 23: ... 82000PF 2012 50V 10 R TP X7R 100UF STD 16V M FL TP5 47UF STD 16V M FL TP5 LOCA NO PART NO DESCRIPTION C988 C989 C991 F801 F803 F805 L101 L207 L2102 L2103 L2104 L216 L217 L218 L219 L652 L653 L654 L655 L801 L805 L805 T30 JA202 P2000 P2001 P2001 P2002 P3 P3000 P3009 P499 P702 P704 P801 P802 P806 P806A P810 R2002 R2003 R536 R801 R803 0CE476DF618 0CE476DF618 0CK105DF64A 131 098B 0FT2001A86B 0FT2001A86...

Страница 24: ... L2107 L2108 L2109 L211 L222 L223 L301 L302 L303 L451 L452 L453 L454 L601 L603 L651 L699 L702 L703 L732 L800 L801 L802 L803 L808 L901 L951 140 313B 6600VR1004A 6600VR1004A 140 313B 140 313B 140 313B 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001G 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE001A 6210TCE00...

Страница 25: ...ILTER EMC HB 1S2012 080JT 2012MM FILTER EMC BK3216 4S600 3 2X1 6X0 8MM RESONATOR 6 000MHZ 30PPM 16PF BK RESONATOR 13 500000MHZ 50 PPM 14PF RESONATOR RADIAL 20250000HZ 30PPM 16PF TP RESONATOR SC14 3MHZ 30 PPM 16PF RESONATOR 18 432000MHZ 30 PPM MANUAL OWNERS DG BN LG GE EN FR NE REMOTE CONTROLLER 40 NON POWER CORD H05VV F 3G I 1800MM CABLE ASSEMBLY AUDIO TO AUDIO 2000MM PANELASSY RZ 15LA60 NON YANGW...

Страница 26: ...P No 3854VA0128A S 1 2 2003 06 18 ...

Страница 27: ...P No 3854VA0128A S 2 2 2003 06 18 ...

Страница 28: ...Jun 2003 Printed in Korea P NO 3828VD0131R ...

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