LG DT-50PY10, Service Manual

Page 1: ...A TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS AF 046A MODEL DT 50PY10 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...ONS 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 8 ADJUSTMENT INSTRUCTIONS 9 TROUBLE SHOOTING GUIDE 12 BLOCK DIAGRAM 26 EXPLODED VIEW 28 EXPLODED VIEW PARTS LIST 29 REPLACEMENT PARTS LIST 30 SCHEMATIC DIAGRAM PRINTED CIRCUIT BOARD ...

Page 3: ... 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 metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measur...

Page 4: ... Ratio Control changes the picture format TEXT These buttons are used for teletext For further details see the Teletext section switches the subtitle on or off in Digital mode Note In teletext mode the PIP PR SWAP and PIP INPUT buttons are used for teletext function VOL Volume Up Down increases decreases sound level PR Programme Up Down selects a programme switches the set on from standby FAVOURIT...

Page 5: ...If OSD is dis played selects menu item switches the set on from standby MENU displays on screen menus one by one exits the current menu memorizes menu changes 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 Power Standby Indicator Illuminates red in standby mode Illuminates green when the ...

Page 6: ...INPUT RGB INPUT PC DTV Connect the monitor output socket of the PERSONAL COM PUTER to this socket Note If you want to use RGB DVI audio we strongly recom mend that you use the cable that has a core or the EMI Filter core along with separate cable 5 COMPONENT INPUT Connect DVD video outputs to Y PB PR of COMPONENT INPUT and audio outputs to Audio sockets of AUDIO INPUT 6 AUDIO VIDEO IN SOCKETS A V ...

Page 7: ...acket Wall mounting bracket Only DT 60PY10 series Tilt wall mounting bracket Only DT 60PY10 series Tilt wall mounting bracket 40 42 50 40 42 50 Ceiling mounting bracket 40 42 50 42 40 2 TV brackets 2 Wall brackets option Secure the TV assembly by joinning it to a wall by using the TV Wall brackets Joinning the TV assembly to the wall to protect the set tumbling After the set must be mounted on s d...

Page 8: ...N Typ Max Unit No Item Remark V Application Range This spec is applied to the 42 50 60 PDP TV used AF 046A Chassis V Specification Each part is tested as below without special appointment 1 Temperature 25 5 C 77 9 F 2 Relative Humidity 65 10 3 Power Voltage Standard Input voltage 100 240V 50 60Hz Standard Voltage of each product is marked by models 4 Specification and performance of each parts are...

Page 9: ...rogrammer click icon 5 End after confirming 4 POWER PCB Assy Voltage Adjustment Va Vs Voltage Adjustment 4 1 Test Equipment D M M 1EA 4 2 Connection Diagram for Measuring Refer to Fig 1 1 Va Adjustment 1 After receiving 100 Full White Pattern Heat Run over 10min 2 Connect terminal of D M M to Va pin of P805 and connect terminal to GND pin of P805 3 Adjust RV601 voltage to match that of the label o...

Page 10: ...stment errors 5 After adjustment is complete exit the adjustment mode by pressing the ADJ KEY 7 Adjustment of White Balance 7 1 Required Equipment 1 Color analyzer CA 100 or similar product 2 Automatic adjustor with automatic adjustment hour necessity and the RS 232C communication being possible 3 AV Pattern Generator 7 2 Connection Diagram of Equipment for Measuring Automatic Adjustment PDP SET 0...

Page 11: ...ic 5 After attaching sensor to center of screen select 2 White Balance of Ez Adjust by pressing the ADJ KEY on the Service R C Then enter adjustment mode by pressing the Right KEY G 6 Adjust the High Light using R Gain B Gain 7 Adjust using Volume KEY G Gain 127 DT 42PY10X R Offset 50 B Offset 48 B Offset 50 DT 50PY10 R Offset 52 B Offset 45 B Offset 60 DT 60PY10 R Offset 55 B Offset 50 B Offset 5...

Page 12: ...signal Doesn t the high tension output come out Doesn t the VSC signal Vs ON come out Yes Yes High tension output voltage Drop it occurs When remove the Y B D Module Input Connector output voltage Drop it occurs When remove the Y Z B D Module Input Connector Power Board high tension output voltage Drop it occurs Yes No No 9 Check the Power Board Output high tension circuit Yes 10 Check the Z B D M...

Page 13: ... 13 1 2 DT 42PY10X Sony Power Board Structure 1 2 3 T502 Vs Trans T702 Va Trans T101 St by Trans T103 Low Voltage Trans ...

Page 14: ... 14 1 3 DT 50PY10 Sony Power Board Structure 1 2 3 T502 Vs Trans T702 Va Trans T101 St by Trans T103 Low Voltage Trans ...

Page 15: ... 15 1 3 DT 50PY10 Sanken Power Board Structure 1 2 3 T221 Vs Trans T271 Va Trans T121 St by Trans T201 Low Voltage Trans ...

Page 16: ... 16 1 4 DT 60PY10 Power Board Structure 1 2 3 AC IN ...

Page 17: ... 17 1 2 3 PFC ...

Page 18: ... 18 1 2 3 DC DC ...

Page 19: ...wer Switch and Power Board Cable Connect the Cable Yes No Is normal the Fuse F101 on Power Board Replace the Fuse Yes No Is connected the Power Board and 7P of VSC Board Cable Connect the Cable Yes No Is connected the Power Switch and Power Board Cable After remove the cable connection to Power Board except the CN101 connection cable authorizes the AC voltage marking on manual When ST BY 5V does n...

Page 20: ...D Yes No Is normal the X Board Is normal the output voltage after remove P1 2 3 4 5 connector of X B D After remove P1 P2 P3 P4 output voltage normality Replace Right X B D After remove P6 P7 output voltage normality Replace Left X B D Yes No Yes Is normal the VSC Board Is normal the output voltage after remove P1000 P1200 After crisis COF of each board check the normality operates If in case the ...

Page 21: ...he output voltage after remove P1 2 3 4 5 connector of X B D After remove P1 P2 P3 P4 output voltage normality Replace Right X B D After remove P6 P7 output voltage normality Replace Left X B D Yes No Yes Is normal the VSC Board Is normal the output voltage after remove P1000 P1200 After crisis COF of each board check the normality operates If in case normality operates correspondence COF Fail is ...

Page 22: ...al the LVDS cable Is normal the VSC Digital Board Is connected the LVDS cable correctly Connect the cable correctly Yes No No Yes Operates the Thine IC IC1401 Replace Thine IC IC1401 No Is normal the Ctrl Board of Module Replace Ctrl B D No No Operates the IEP IC1301 Replace the IEP IC1301 Yes No Operates the Scaler IC701 Replace the Scaler IC700 Yes Replace the cable Yes Replace the VSC Digital B...

Page 23: ... mode 23 Is normal the Tuner Is normal the CXA2069Q IC301 Is connected the Tuner Cable correctly Connect the Cable correctly Yes No No Yes Is normal the VPC3230 or VPX3226 Replace the Tuner No Is normal the Input voltage IIC Communication and CVBS output Yes Is normal the Input voltage IIC Communication and HV sync No Replace the IC No Is normal the Input voltage IIC Communication and HV sync No R...

Page 24: ...o Yes Is normal the Scaler Is normal the Input voltage IIC Communication and HV sync No Replace the IC No Is normal the Sil169 IC601 Yes Is normal the Input voltage IIC Communication and HV sync No Replace the IC No Is normal the Scaler Is normal the Input voltage IIC Communication and HV sync No Replace the IC No Is correct the EDID Yes Is the latest version the Graphic card driver of the PC Inpu...

Page 25: ... SPK Yes Yes Is normal the RF Digital sound Is normal the MSP4410K IC501 No No Is normal the NSP6241 IC502 Yes Is normal the TAS5122 IC503 Is normal the Scaler IC503 Replace VSC Digital B D Yes Yes Yes Yes Is normal the RF Analog AV Component L R sound Is normal the CS5330A IC1205 MC33078 IC1206 Scaler IC701 Yes Is connected the Flat cable correctly Connect the Cable correctly No Yes No Replace th...

Page 26: ... 26 BLOCK DIAGRAM BLOCK DIAGRAM ...

Page 27: ...MEMO 27 ...

Page 28: ... VIEW 316 124 570 401 120 121 122 123 102 103 101 215 214 400 430 590 540 520 501 530 560 541 307 308 315 309 310 311 313 312 314 303 304 305 306 302 301 551 550 205 212 201 203 200 202 210 208 209 207 206 211 580 ...

Page 29: ...3B SUPPORTER ASSY AL FOR 50PY10 PRESS 303 4980V01076C SUPPORTER FILTER EGI ASSY PRESS LEFT 304 4980V01074B SUPPORTER ASSY AL FOR 50PY10 PRESS 305 5230V00020C FILTER MECH DU 50PY10 LG CHEMICAL FLATRON PLASMA DELETE LG FOR AMREICA 306 4980V01075C SUPPORTER FILTER EGI ASSY PRESS RIGHT 307 3210V00241A FRAME FRONT UPPER AL DN 50PY10 PDP 308 4972V00106A FIXER FRAME AL DN 50PY10 PDP 309 4811V00090A BRACK...

Page 30: ...TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA 0TR387500AA K4S641632H TL75 54P TSOP K4S641632H TL75 54P TSOP K4S641632H TL75 54P TSOP K4S641632H TL75 54P TSOP COPY M37272EFSP6 OTP 42SDIP KIA7042AF SOT 89 TP 4 2V AT24C16A...

Page 31: ...LOCA NO PART NO DESCRIPTION C104 C104 C104 C105 C106 C1102 C1104 C1108 C1110 C123 C124 C125 C1267 C1268 C1269 C1270 C1271 C1272 C1273 C1274 C1275 C1276 C1277 C1278 C1279 C1280 C1281 C1282 C1283 C1284 C1285 C1286 C1287 C1288 C1289 C1290 C1291 C1292 C1293 C1294 C1295 C1296 C1297 C1298 C1299 C1300 C1301 C1302 C1303 C1304 0CE475SK6DC 0CE476DF618 0CE476SF6DC 0CE476DF618 0CE476SF6DC 0CE476SF6DC 0CE476SF...

Page 32: ... R TP SMD SMD LOCA NO PART NO DESCRIPTION C414 C415 C416 C417 C418 C426 C429 C431 C432 C433 C436 C438 C443 C507 C509 C511 C520 C531 C533 C544 C550 C551 C555 C556 C560 C563 C566 C567 C576 C577 C583 C597 C602 C603 C604 C607 C609 C610 C611 C612 C613 C614 C615 C616 C616 C617 C621 C623 C624 C633 C636 C637 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0CE106SF6DC 0C...

Page 33: ...R1303 AR1304 AR1305 AR1306 AR1401 AR1402 AR1403 AR1404 AR1405 AR601 AR602 AR603 AR604 AR605 AR606 AR901 AR902 R1101 R1209 R1210 R310 R801 R802 DL1601 DL1602 DL1603 DL1604 IC103 IC104 LD601 LD602 LD603 LD604 LED101 SW1101 SW201 SW202 SW203 6630VGA001C 6630GZ00724 6630VGA004B 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZVTA001D 0RRZV...

Page 34: ...L208 L209 L210 L211 L216 L217 L218 L302 L405 L407 L408 L510 L511 L514 L515 L607 L608 L609 L610 L611 L612 L613 L614 L615 L616 L617 L618 L619 L620 L801 L802 L804 R102 R103 R106 R107 R108 X201 X301 X401 X401 X402 X501 X801 X901 6210VC0006A 6210VC0006A 6210VC0006A 6210VC0006A 6210VC0005A 6210VC0005A 6210VC0005A 6210VC0005A 6210VC0005A 6210VC0005A 6200JB8010L 6200JB8010L 6200JB8010L 6200JB8010L 6210VC0...

Page 35: ...COM D3 5 E P TOTX179 OPTIC TX MODULE JACK TORX179 S PDIF OPTICAL RX JACK TORX179 S PDIF OPTICAL RX JACK PPJ122C A V 6P COMPONENT SHIELD GOLD PPJ122B A V 6P SHIELD GOLD PPJ121B A V 4P SHIELD GOLD 6046B 01S H 8 0 WITH S W SHIELD MANUAL OWNERS AF046A LG EN TX 026H REMOTE CONTROLLER MB04EA PIP POWER CORD BP3110 SAA 2800MM BRACKET WALL AP 60DA10 CABLE DVI LVDS UL20276 AWG30 500MM CABLE COAXIAL UL1365AW...

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Page 39: ...PRINTED CIRCUIT BOARD MAIN TOP POWER S W TOP SIDE A V TOP SIDE A V BOTTOM INDEX TOP INDEX BOTTOM POWER S W BOTTOM MAIN BOTTOM CONTROL TOP CONTROL BOTTOM TUNER TOP TUNER BOTTOM ...

Page 40: ...Nov 2004 Printed in Korea P NO 3828VD0193B ...