LG RT-52 Service Manual Download

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ON/OFF

TV/AV

VOL

LCD Projection TV
SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : MB-03CB

MODEL : RT-52/60SZ31RB/RP

website:http://biz.LGservice.com

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

Oct.,2003

Printed in Korea

P/NO : 3828VD0133Z

Summary of Contents for RT-52

Page 1: ...RVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MB 03CB MODEL RT 52 60SZ31RB RP website http biz LGservice com e mail http www LGEservice com techsup html Oct 2003 Printed in Korea P NO 3828VD0133Z ...

Page 2: ...RECAUTIONS 3 SERVICING PRECAUTIONS 4 CONTROL DESCRIPTIONS 6 SPECIFICATIONS 10 ADJUSTMENT INSTRUCTIONS 14 BLOCK DIAGRAM 20 PRINTED CIRCUIT BOARD 25 EXPLODED VIEW 34 36 EXPLODED VIEW PARTS LIST 35 37 REPLACEMENT PARTS LIST 38 SVC SHEET ...

Page 3: ... 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 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 metall...

Page 4: ...ntegrated circuits and some fieldeffect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static by static e l e c t r i c i t y 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Al...

Page 5: ...und 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 ...

Page 6: ...on of the sub picture POSITION relocates the sub picture in clockwise direction 5 SWAP returns to the previously viewed programme 6 MENU selects a menu 7 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 8 NUMBER BUTTONS switches the set...

Page 7: ...om any menu 16 SSM Sound Status Memory recalls your preferred sound setting 17 LIST displays the programme table 18 ARC Aspect Ratio Control changes the picture format Note In teletext mode the PR SWAP and INPUT buttons are used for teletext function 1 2 3 4 5 6 7 PSM SSM 8 0 POSITION STILL MIX I II ARC REVEAL TIME LIST MODE STOP REC P STILL REW FF PLAY 9 POWER MULTIMEDIA TV AV MUTE SLEEP PIP TEXT...

Page 8: ...s the set on from standby 7 OPERATION INDICATOR Refer to p 7 8 LAMP INDICATOR Refer to p 7 9 TEMPERATURE INDICATOR Refer to p 7 10 REMOTE CONTROL SENSOR Note There might be a faint white trace on the center of the screen according to the position This is normal and is a characteristic of the screen Front panel ON OFF ON OFF TV AV MENU OK VOL PR TV AV MENU OK VOL PR 2 3 4 5 6 7 8 9 1 10 Lamp indica...

Page 9: ... port is used to upgrade the software version and debug without changing the hardware Be careful not to use this port Just contact your dealer or service centre DTV DVD INPUT SOCKETS PC DTV INPUT SOCKETS CENTER SPEAKER MODE IN SOCKETS AV1 2 MONITOR OUT AUDIO VIDEO S VIDEO INPUT SOCKETS VARIABLE AUDIO OUT SOCKETS S VIDEO INPUT SOCKET AV3 INPUT SOCKET Off Power cord is not connected Red Power Cord i...

Page 10: ...ed in B O M PARTS SPEC or drawings 5 Follow each drawing or spec for spec and performance of parts based upon P N of B O M 6 Warm up TV set for more than 30min before the measurement Specification PAL B G D K I M N SECAM B G D K NTSC M 4 43 1 VHF E02 E12 UHF E21 E69 CATV S01 S20 HYPER S21 S41 110 240V 50H 60Hz Non EU 52 60 inch 16 9 wide 0 20 10 Remark RB Teletext RP W O Teletext option Model Name...

Page 11: ... Input RGB Audio L R Input Center Speaker Mode Input Component Audio R L Input Component Input AV Input S Video Input Monitor out Variable Audio out Serial Port Local key Picture EZ Video mode Picture User Control Display mode Sound EZ Sound mode Sound Stereo Dual PIP POP Mode SSC Split Screen Mode Teletext Timer OSD Language At Room Temperature At 10 C 1 2 3 4 5 6 7 8 Power ON OFF operation Stari...

Page 12: ... G B Video Input Level Audio Input S N Audio Input Distortion Audio Input Dynamic Range Audio Input Level Audio Input Frequency Response 0 85 3 40 0 85 0 256 0 6 0 6 40 2 0 47 0 05 1 1 0 286 0 7 0 7 0 5 1 15 1 15 0 316 0 8 0 8 2 0 6 10 Vpp MHz dB Vpp Vpp Vpp Vpp dB V Vrms kHz No Item Specification Min Typ Max Unit Remark V External Interface SDTV DVD 480I SDTV DVD 480I EDTV 480P SDTV DVD 576I EDRV...

Page 13: ... 0 BG I D 1 BG La 2 BG I DK M 0 west EU 1 East EU 1 2 East EU 2 3 Turkey EU 4 Cyrillic 1 0 west EU 1 East EU 1 2 East EU 2 3 Turkey EU 4 Cyrillic 1 5 Cyrillic 2 6 Cyrillic 3 7 Turk GRE 1 8 Turk GRE 2 9 Turk GRE 3 10 Arab FRA 11 Arab ENG 12 Arab HEB 1 13 Arab HEB 2 14 FARS ENG 15 FARS FRA 16 FARS All 1 2 3 4 5 6 7 8 Volume Curve Text Top I_II SVC Lamp_Type C_Mute system Osd Language Text Language 1...

Page 14: ...adjustment When the LCD panel load data on regular pixel using high speed charge discharge with sample holder the drain width of TFT gradually decreases and the non resistance increases and comes out regular noise on screen shows vertical line by 12 pixel 1 Required Test Equipment 1 PC Pattern generator 16 Gray Pattern 2 Fixation stand 3 Remote control of adjustment 4 Circuit thing Jig for adjustm...

Page 15: ...igure is change to green by clicking it 4 Select the program of operations 5 Check the Erase before programming and Verify menu as shown Fig4 and press the OK button f At this time the download starts The download finished after 10 seconds 6 Assembling Adjustment 6 1 Screen Tilt Keystone Adjustment 1 Required Test Equipment 1 Six angles wrench and spanner for knob adjustment or fixation 2 Remote c...

Page 16: ...h the channel key adjust Red Offset Blue Offset value with the volume key to adjust passively white Balance in Low Level adjustment limit Red Offset 2 step Blue Offset 4step 6 4 White Balance Gamma Adjustment 1 Required Test Equipment 1 CA100 1EA Measure colour of projecting screen center CA 110 name of model is possible to measure White Balance and Gamma leave it 20Cm from screen center Follow a ...

Page 17: ...nt 1 Uniformity measuring equipment Equipment which can measure chromaticity in the whole screen 2 Set stand 1EA 3 Remote controller for adjustment 1EA 4 Circuit thing Jig for Adjustment Except Driver Board Assy of adjustment model Programmed Digital Board so that the VDP Test Pattern can output white signal by 1level form 0 to 255 level 2 Equipment composition Compose the equipment as Fig 2 3 Pre...

Page 18: ... BMID2 and BMID1 value 26 BL2L Lower 9bit of MID1 brightness correction coefficient in B MID2 Change according to BMID2 and BMID1 value 27 BL3H Upper 9bit of MAX brightness correction coefficient in B MID1 Change according to BMID1 and BMAX value use it while adjusting 4 coefficient 28 BL3L Lower 9bit of MAX brightness correction coefficient in B MID1 Change according to BMID1 and BMAX value use i...

Page 19: ...ess of Main Sub screen is different 1 Receive RF 06Ch to Main Sub screen in twin picture 2 Let the screen clearly 3 Check the US06CH with naked eyes in 06Ch pattern and if there is difference adjust like this The field and the letters are distinguished 1 Adjusting Main screen Press the IN Start key on service remote to select VPC3230_Main Ł Adjust to Luma Contrast of adjustment item with Volume ke...

Page 20: ... Y C SDA5550 VPC3230 _M IC104 TXT_R G B TXT_Y Cb Cr ReaeyII D_Y Cb Cr D_Y Cb Cr CH_A CH B DTV_HS VS LPF_CTL2 H 30MHz L 6MHz AV3 V Y C Tuner Main Tuner Sub CXA2119 TXT_FB SC R G B SC R G B Component Board Tuner AV Digital Board Main Board CX2069 Switching LPF AD9883A ADC 16 3 3 3 3 5 1 Video Input Path BLOCK DIAGRAM ...

Page 21: ...HS VS DTV Component Board Tuner AV Digital Board Main Board 74HC4053 CTL A RGB_HS VS PC Comp RGB DTV HS VS S V Comp_Y XC95144XL CPLD AV HS S V Y TXT HS VS HS VS_VDP_S M V M Y HS VS_VDP_M HS VS_ADC FID_VDP_S FID_VDP_M H Comp RGB DTV L RGB PC 74VHC123 AV VS V_sync R C LPF 2 Syns I O Path ...

Page 22: ...2003 04 30 CXA2069 Tuner M Tuner AV MAIN MSP3411G LA4282 SIF L R1 L R3 L R2 L R TV L R COM2 L R COM1 L R PC Main L R L R out Main R Lout L R Var Component CTR Center IN KA4558D Audio Mute 3 Audio Input Path ...

Page 23: ... SDATA ATC24C16 IIC0 General Control Signal Control IIC1 Communication Btwn V3 and SDA550 IIC2 Communication Btwn V3 and M37272 IIC3 Key Board LED Control IICX Driver Control Driving Bias Generator Line for adjustment SCLK SDATA PURPOSE OF IIC M62320 M62320 L S IIC3 3 3 IIC3 5 IIC3 5 Voltage Level In IICn M 2 5 2 5 V 5 5V 3 3 3 3V What is M L S IIC1 5 IIC1 3 3 Tuner AV COM PC Main Digital Driver K...

Page 24: ... 24 5 General Control Signal ...

Page 25: ... 25 PRINTED CIRCUIT BOARD MAIN TOP ...

Page 26: ... 26 MAIN BOTTOM ...

Page 27: ... 27 COMPONENT TOP COMPONENT BOTTOM SIDE A V PRE AMP LED AC INPUT ...

Page 28: ... 28 LCD DRIVER TOP CONTROL ...

Page 29: ... 29 LCD DRIVER BOTTOM ...

Page 30: ... 30 DIGITAL TOP DIGITAL BOTTOM ...

Page 31: ... 31 TUNER TOP TUNER BOTTOM ...

Page 32: ... 32 SMPS POWER S W INTERFACE BALLAST ...

Page 33: ...MEMO 33 ...

Page 34: ... 34 EXPLODED VIEW 52 430 690 410 420 120 121 300 310 640 650 630 303 590 307 304 302 305 301 306 123 308 620 670 621 610 611 600 612 124 125 520 550 560 503 502 530 122 174 540 501 680 570 580 401 660 ...

Page 35: ...3B FRAME RU 60SZ10 CHASSIS SMPS AB 00EA 503 4811V00021E BRACKET ASSEMBLY REAR AV RT 52SZ30RP NB03JA 520 6871VMMP50D PWB PCB ASSEMBLY MAIN MB 03CB RT 52SZ31RB 530 6871VPMA14C PWB PCB ASSEMBLY POWER SMPS MB 03CB M I 540 6871VSMU54E PWB PCB ASSEMBLY SUB TUNER MB03CB M I 550 6871VSMU56D PWB PCB ASSEMBLY SUB DIGITAL MB03CB M I FOR NON EU 560 6871VSMU55C PWB PCB ASSEMBLY SUB MB03CB M I COMPO 570 6871VPM...

Page 36: ...36 EXPLODED VIEW 60 302 305 301 306 307 430 690 410 121 300 303 420 120 304 123 620 670 610 600 124 125 502 530 122 174 520 550 540 501 680 570 580 503 560 308 660 611 621 612 310 640 650 630 590 309 401 ...

Page 37: ...FRAME RN 52SZ10H CHASSIS DIGITAL 502 3210V00073B FRAME RU 60SZ10 CHASSIS SMPS AB 00EA 503 4811V00080A BRACKET ASSEMBLY BOARD RT 60SZ30RP MB03CA REAL AV 520 6871VMMP50F PWB PCB ASSEMBLY MAIN MB 03CB BOTTOM M I 530 6871VPMA14D PWB PCB ASSEMBLY POWER SMPS MB 03CB M I RT 60SZ31RB 540 6871VSMU54G PWB PCB ASSEMBLY SUB TUNER MB03CB M I 550 6871VSMU56F PWB PCB ASSEMBLY SUB DIGITAL MB03CB DIGITAL M I 560 6...

Page 38: ...5S ALY KEC CHIP 2SC3875S ALY KEC CHIP 2SC3875S ALY KEC LOCA NO PART NO DESCRIPTION IC01 IC02 IC1 IC101 IC102 IC103 IC104 IC105 IC1100 IC1100 IC1101 IC1102 IC1103 IC1104 IC1105 IC1106 IC1107 IC120 IC1200 IC1200 IC1202 IC1202 IC1203 IC1300 IC1301 IC1302 IC1303 IC1304 IC1305 IC1400 IC1401 IC1402 IC1403 IC1404 IC1405 IC1500 IC1501 IC1502 IC1503 IC1504 IC1505 IC1601 IC1602 IC2 IC208 IC301 IC302 0IMI623...

Page 39: ...PART NO DESCRIPTION Q1601 Q2 Q201 Q202 Q203 Q204 Q205 Q206 Q207 Q208 Q209 Q210 Q213 Q3 Q301 Q302 Q304 Q400 Q501 Q510 Q511 Q601 Q602 Q810 Q841 Q842 Q851 D01 D02 D03 D1 D100 D101 D102 D1200 D1602 D1603 D1605 D2 D200 D201 D3 D300 D4 D400 D402 D402 D403 D403 D404 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR150400BA 0TR15040...

Page 40: ...1101 C1102 C1103 C1104 C1105 C1106 C1107 C1108 C1110 C1111 C1112 C1114 C1116 C1118 C1122 C1125 C1133 C1134 C1138 C1139 C114 C1143 C119 C120 C1200 C1201 C1202 C1204 C1205 C1206 C1207 C1208 C1209 C1210 C1216 C1217 C1218 C1219 C1226 C1234 C1237 C124 0CE476VF6DC 0CE476VF6DC 0CE476VF6DC 0CE226SF6DC 0CE476VF6DC 0CE476VK6DC 0CE476VF6DC 0CE476VK6DC 0CE226VF6DC 0CK103CK56A 0CE476VH6DC 0CK103CK56A 0CK103CK5...

Page 41: ...SMD 47UF MV 25V 20 R TP SMD SMD 0 01UF 1608 50V 10 R TP X7R LOCA NO PART NO DESCRIPTION C1511 C1513 C1519 C1520 C1521 C1522 C1524 C1525 C1529 C1535 C1536 C1541 C158 C159 C1601 C1602 C1603 C1604 C1605 C1606 C1607 C1608 C1609 C1610 C1611 C1612 C1613 C1614 C1615 C1616 C1618 C1620 C1621 C1630 C1631 C168 C172 C173 C175 C183 C185 C186 C187 C188 C190 C191 C192 C193 C194 C195 C198 C2 0CK103CK56A 0CK103CK5...

Page 42: ... 33UF MVG 6 3V M SMD R TP LOCA NO PART NO DESCRIPTION C372 C401 C402 C403 C403 C404 C405 C406 C406 C407 C408 C409 C410 C411 C411 C412 C412 C417 C426 C427 C428 C429 C430 C433 C434 C435 C436 C437 C450 C453 C456 C456 C456 C5 C507 C508 C509 C510 C515 C6 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C653 C7 0CE226SF6DC 0CE107VF6DC 0CE107VF6DC 0CE107SF6DC 0CE107VF6DC 0CE107VF6DC 0CE476VK6DC 0CE226SF...

Page 43: ...503 AT1504 AT1505 AT1506 AT1507 L01 L02 L03 L1 L101 L101 L102 L103 L103 L104 L106 L107 L108 L109 L110 L1100 L1101 L1102 L1103 L1104 L1105 380 404A 6612VMH003A 6612VMH003A 6612VMH003A 6612BBBHN6A 6612VMH003A 6612VMH003A 6612BBBHN6A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0LCCE00018A 0...

Page 44: ...P001A P001B P001C P002A P003A P003B P003B P003C P1 P100 P101A P102A P103A P110 P1101 P1102 P111 P1300 P1400 P1500 P1600 P1601 P2 P201A P202A P204B P301 P4 P400 P401 P402 P403 P404 P5 P500 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 0LCCE00017A 6170VMCA03D 6170VMCA37B 6170VS0001B 6630VGA001B 6602V12001D 366 169J 366 169J 66...

Page 45: ...1 16 W 1608 5 22 OHM 1 16 W 1608 5 22 OHM 1 16 W 1608 5 22 OHM 1 16 W 1608 5 LOCA NO PART NO DESCRIPTION AR1204 AR1205 AR1206 AR1207 AR1208 AR1209 AR1210 AR1211 AR1212 AR1213 AR1214 AR1215 AR1216 AR1217 AR301 AR302 AR303 AR304 AR305 AR306 D812 R1 R104 R106 R1253 R1606 R1609 R1615 R1616 R2 R3 R4 R402 R409 R425 R426 R5 R801 R801B R802B R803 R803 R803B R805 R805B R806 R806 R807 R807 R808 R809 R811 0R...

Page 46: ...123A 150 F06T 150 F06T 150 F06T 150 F06T 0IZZVF0022B 6200JB8009Q 6200VJT006A 6200VJT006A 6200VJT006A 6200C000012 6200C000012 6200QJ3001A 6200VJT006A 6200QJ3001A 6200VJT006A 6200QJ3001A 6200VJT006A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200QJ3001A 6200VJT006A 6200VJT006A...

Page 47: ...L HC49U 18 432MHZ 30PPM MANUAL OWNERS MB03CA NEU LG EN 100E TX REMOTE CONTROLLER NB03JA MONO FUSE SLOW BLOW5000MA 250 V 5 2X20 SOCKET CIRC IC822473 3 AMP 32PIN 2 54MM TRANSFORMER IRON 15 120UH THERMISTOR KL15L2R5 SSANSHIN 15 125V THERMISTOR KL15L2R5 SSANSHIN 15 125V REMOTE CONTROLLER RECEIVER TSOP1238RF1 TUNER TAUD Z240D LG MULTI FS 4SYS 2IN1 MAIN TUNER TAFD Z241P LG MULTI FS 4SYS 2 IN 1 SUB VARIS...

Page 48: ...P No 3854VA0117C S1 1 2 2003 10 8 ...

Page 49: ...P No 3854VA0117C S1 2 2 2003 10 8 ...

Page 50: ...P No 3854VA0117C S2 1 2 2003 10 8 ...

Page 51: ...P No 3854VA0117C S2 2 2 2003 10 8 ...

Page 52: ...S VC SHEET 3854V A0117C S1 S VC SHEET 3854V A0117C S2 S VC SHEET ...

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