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LG PE/PL-43 Service Manual

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P/NO : 3828VD0096A
Sep.,2001
Printed in Korea
e-mail:http://www.LGEservice.com/techsup.html
COLOR TV

SERVICE MANUAL

CHASSIS : MP-015A
MODEL : PE/PL-43/48/53A82T
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CH:
MOVIE SPORTS MUSIC
MOVIE SPOR
TS MUSIC
PRO LOGIC
PRO
LOGIC
DIGITAL INDEX
L
C
R
LS
CA
CATV
RS
TV
TV /
website:http://biz.LGservice.com

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  • Page 1: Service Manual

    COLOR TV SERVICE MANUAL CHASSIS : MP-015A MODEL : PE/PL-43/48/53A82T CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MOVIE SPOR MOVIE SPORTS MUSIC TS MUSIC PRO LOGIC LOGIC DIGITAL INDEX CATV TV / Sep.,2001...

  • Page 2: Table Of Contents

    CONTENTS Contents ......................2 Safety Precautions ..................3 Servicing Precautions ..................4 Specifications ....................6 Control Descriptions ..................8 Adjustment......................11 Troubleshooting .....................18 Block Diagram ....................26 Printed Circuit Board ..................30 Wiring Diagram....................42 Exploded View ..................44,46,48 Exploded View Parts List..............45,47,49 Replacement Parts List ................50 SVC.

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORT ANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by 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.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service transistors and semicounductor "chip" components. The manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the SAFETY PRECAUTIONS on page 3 of this publication. incidence of component damage caused by static by static NOTE: If unforeseen circumstances create conflict between the electricity.
  • Page 5 c. Qulckly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it Removal/Replacement there only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board component lead and the foil.

  • Page 6: Specifications

    SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. Video input system: Power consumption : Multi 26 System 250 Wmax. (Refer to Table 1) Intermediate Frequency Tuning system : Vision IF : 38.9MHz FVS 100 Program Memory(With Teletext Model) Color IF : 34.47MHz *SECAM : 38.9-4.25MHz FVS 200 Program Memory(W/O Teletext Model)
  • Page 7 T able 1 : Receiving System (26 System) Receiving System Receiving Channel Function P P A A L L - - B B P P A A L L - - G G V V H H F F B B a a n n d d P P A A L L - - I I : : 2 2 - - 1 1 2 2 PAL/SECAM-B...

  • Page 8: Control Descriptions

    CONTROLS DESCRIPTION All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset Before you use the remote control handset, please install the bat- teries.
  • Page 9 11. LIST displays the programme table. 12. VCR BUTTONS control a LG video cassette recorder. 13. EYE switches the eye function on or off. 14. TV/AV selects TV or AV mode. POWER clears the menu / text from the screen.

  • Page 10: Location And Function Of Controls

    Location and function of controls Front panel • PT-48/53A82 series DIGITAL INDEX PRO LOGIC LOGIC MOVIE SPOR MOVIE SPORTS MUSIC TS MUSIC MENU PRO LOGIC LOGIC DIGITAL INDEX MOVIE SPOR MOVIE SPORTS MUSIC TS MUSIC MENU CATV CATV TV/AV TV/AV ON/OFF ON/OFF •...

  • Page 11: Adjustment

    ) to reset the convergence. 1. Test Equipment Signal Generator can produce DOT pattern 2. Adjustment LG Convergence assy 2. Preliminary steps Make green raster using lens cover and coincide 1) Heat run over 60 minutes. horizontal/vertical center lines of pattern with those of 2) Pre-adjust Raster slope,Raster position &...

  • Page 12: Deflection Adjustment

    High Voltage Regulation Adjustment 4) HS (Horizontal Shift) Adjust so that the horizontal center line of a digital circle pattern is in accord with geometric horizontal center of the CPT. 1. Test Equipment Digital Multi-Meter(DMM) 5) EW (East-west Width) Adjust until the outermost left and right vertical line of the 2.

  • Page 13: Convergence Adjustment

    Lens Focus & Electronic Focus Adjustment to green which of 3.5 Cross-Hatch part from picture's center toward left. 1. Preliminary steps 1) Electronic focus,Raster slope & Raster position must be pre- adjusted. 2) Heat-run over 60 minutes. 3) Receive Crosshatch pattern. 4) Adjustment must be operated in a dark room(simple dark 2) Adjust the chromatic aberration become center of purple and room) and pay attention not to touch the lens during...

  • Page 14: White Balance Adjustment

    3. Pattern Position Adjustment X=0.280 and Y=0.300 (Deviation : ! 0.01). 6) Set BRIGHT to L/Light adjustment mode and adjust CR (R 1) Change into pattern shift mode. Cut Off) and CB (B Cut Off) until color coordinate becomes (Press numeric buttons “9” & “4”) X=0.282 and Y=0.286 (Deviation : ! 0.01).
  • Page 15 SVC Adjustment mode & Initial data Range Menu Description Default DC-TR DC transmission control 1. White Blalane adjustment data (IC:CXA2100) LRGB2 RGB2 output level control Menu Description Range Default DL-PA DElay Line switching Red Drive SHPF0 Sharpness f0 Green Drive CB-F1 INput1 CB signal DC Offset Blue Drive...
  • Page 16 6.OPTION Data Adjustment Range Description Default Range Description Default 1: With Teletext 200 PRO 1: 200 Program(CHINA Only) TEXT 0: Without Teletext(CHINA) 0: 100 Program 1: RF 54% Modulation INput TSEAR 1: With TURBO Search option3 SCART 0: RF 100% Modulation INput 0: Without TURBO Search 1: China+AUST.Channel Table I/II SV...
  • Page 17 State Language Funciton Default 0:E Only English 1:EU 5EA English/German/French/Italy/Spanish 2:EU ETC Pol./Hungary/Czecho/Russia/Eng 3:PARSI English/Parsi LANG 4:ARAB DUAL English/French/Arab+Urdu 5:English+Hindi English/Hindi 6:English+I+M+V English/Indonesian/Malaysian/Vietnamese 7:English+THAI English/Thai 8:English+China English/China 0:West Europe English/French/Swedish/Czech/German/Spanish/Itallian 1:East Europe Polish/Fench/Swedish/Czech/German/Slovenian/Italian/Romanian option4 2:Turkey English/French/Swedish/Turkish/German/Spanish/Itallian 3:EAST EU2 English/Hungarian/Serbian/Czech/German/Polish/Spanish/Itallian/ Romanian 4:Cyrillic 1 5:Cyrillic 2 6:Cyrillic 3...

  • Page 18: Troubleshooting

    Trouble Shooting 1. NO PICTURE ( SOUND OK ) CVBS Signal ? Check MAIN1 Q101(E) Waveform. (2Vpp) Check around Waveform of AV Board IC202 #63 ? Check Tuner(TU101) VIDEO output IC202 Waveform of AV Board Q505(E) ? Check around IC202 Waveform of VIDEO Board Check IC501 IC501 #72 ?
  • Page 19 2. NO SOUND (PICTURE OK) <AV1,2,3,DVD(480i),DVD(480p) INPUT> < RF > Waveform of Waveform of AV Board IC205 Check arround Check MAIN1 Q103 #47,48,50,51,53,54,56,57 each Jack TU101 Q104 ( SIF ) ? at each Mode ? Waveform of Check AV Board IC205 around #67 ? IC205...
  • Page 20 3. NO PIP <AV1,2,3> <RF> <SCART> Waveform of PIP Waveform of AV Board Waveform of MAIN1 Board IC502 IC202 #8,15,22,35 ? Q110(E) ? #1,2,3,7,9 ? Check JA202 Waveform of Video Board Check Video Board IC202 #44 ? Q203,IC202 Check Scart Jack JA204 Waveform of Video Board Check P212B...
  • Page 21 4. NO Teletext (Picture OK) Waveform of MAIN1 IC501 #4 ? Check Micom IC001 Micom Board Ic001 #21 ? #57~60 Check OPTION3 TEXT Code (SVC MODE) 5. NO OSD (ON SCREEN DISPLAY) Horizontal, Vertical Fly Back Input Waveform of Micom Board IC001 #29,#30 ? Check DEF.
  • Page 22 6. NO POWER ON Check input voltage of Check SMPS Board IC001#6,8,22,40,56,73,75,92 Check IC001 #52,53 Replace X001 (OSC) Replace Q003, Q004 Check IC001 #11,12 (SCL,SDA) Check Abnormnal Circuit Check IC001 #44 (ABN) HIGH Check IC001 #34 ( IR ), Check P004A connector #31~38 (Key In) - 22 -...
  • Page 23 7. NO VFD OPERATION (Option) Check AV Board IC205 #5 Check IC205sound output Sound signal. Check IC205 #3 output Check around IC205 Check IC001 #45,46 Check Q008, 007 Check IC001 #47,48,49 Check Q011, Q012 - 23 -...
  • Page 24 8.NO RASTER Check +B voltage 115V or not Is the voltage Open Check F801 at Pin 76,69 of IC501 5V ? Check 5V,9V, Check / Replace 12V lines F801,D815 IC801 Does the square waveform from Pin 17 Check the voltage of IC702 appear? of C812(+) Check IIC bus lines...
  • Page 25 9. INCORRECT CONVERGENCE Does the static convergence correct? Check the input vlotage Re-adjust static convergence at P201 by remote controller Not controlled Controlled Are there pulse signal Check pulse pin125 Check voltage on the at pin121 of IC2051 of IC2051(4Mhz) SMPS PCB Are there V,H pulse Check / Replace...

  • Page 26: Block Diagram

    BLOCK DIAGRAM(SIGNAL) - 26 -...
  • Page 27 BLOCK DIAGRAM(DEF) IC401 KIA4358 H OUT H-DRIVE DUMMY H-DF H-DRIVE Q402 H-DY TRANS Q403 IRFIBC206 T405 T401 2SC5446 FOCUS V FOCUS PACK HV OUT HVDRIVE HV DRIVE Q413 TRANS T403 BLOCK Q416 IRFIBC206 T402 2SD1887 DYNAMIC FOCUS P411 9V p-p Q433 DF TRANS SAWTOOTH...
  • Page 28 BLOCK DIAGRAM(SMPS-WIDE) - 28 -...
  • Page 29 BLOCK DIAGRAM(SMPS-NARROW) - 29 -...

  • Page 30: Printed Circuit Board

    PRINTED CIRCUIT BOARD SIGNAL - 30 -...
  • Page 31 COMPONENT LOCATION GUIDE(SIGNAL) R131 ..D4 R667 ..D1 C001..A5 C503 ..C2 E008 ..F1 J46 ..C5 J128..F3 J501 ..B1 R011..A2 R668 ..D2 C504 ..C2 F001 ..B5 J47 ..C5 J130 ..G4 L001 ..A4 R012..A2 R132..E4 C002..B5 F101 ..F5 J48 ..C5 J131..F3 L002 ..A4 R013..A2 R133..E4 R669 ..D2...
  • Page 32 MAIN2 (DEF) - 32 -...
  • Page 33 COMPONENT LOCATION GUIDE(DEF) R495..E3 R420S ..E3 G405 ..C2 G463 ..C4 J451..F1 Q409 ..D4 R427..E5 C301..E2 C457..F3 D437..F4 R428..E5 R496..E2 SG302 ..A3 DF ..A3 G406 ..B2 G464 ..C4 J452..F1 Q410 ..D4 C302..E2 C460..E4 Q413 ..E4 R429..E3 R497..E2 SG303 ..A4 C303..F2 C461 ..C5 DFGND ..A3 G407 ..B2 G465 ..B2...
  • Page 34 SMPS (WIDE) SMPS (NARROW) - 34 -...
  • Page 35 CONV-OUT - 35 -...
  • Page 36 POWER S/W PRE-AMP CONTROL SIDE AV - 36 -...
  • Page 37 VM (TOP) VM (BOTTOM) - 37 -...
  • Page 38 CONVERGENCE (TOP) CONVERGENCE (BOTTOM) - 38 -...
  • Page 39 MICOM (TOP) MICOM (BOTTOM) - 39 -...
  • Page 40 100HZ (TOP) 100HZ (BOTTOM) - 40 -...
  • Page 41 AV (TOP) AV (BOTTOM) - 41 -...

  • Page 42: Wiring Diagram

    WIRING DIAGRAM 1. ITC & DYC 761-101E 0.3g P204B R,G,B SIDE A/V P03P PRE-AMP HARMONICS PCB P880 ANODE ANODE ANODE P903B P903A P904A P901B P902B P904B GND2R GND2G GND1B SCR1R SCR1G GND1G SCR1B GND5B "R" CRT PCB "G" CRT PCB "B"...
  • Page 43 MEMO - 43 -...

  • Page 44: Exploded View

    EXPLODED VIEW(PE-43A82T) - 44 -...

  • Page 45: Exploded View Parts List

    FRAME ASSY PE- 320-062J SPRING,KNOB 5020V00393B BUTTON,POWER 6871VSM972A PWB ASSY,CONT+VFD 5020V00458A BUTTON,CONTROL 4810V00328A BRACKET ASSY CONTROL 6871VSM973A PWB ASSY,PSW 3091V00250G CABINET ASSY,LG 100HZ 4980V00139A SUPPORTER,LENS/PRT 3809V00183C BACK COVER ASSY 3809V00184A BACK COVER ASSY,LOWER 5018V00019A MIRROR,PLASTIC 3300V00062C PLATE,BACK COVER 4810V00221C BRACKET,MAIN PCB 4810V00419B...
  • Page 46 EXPLODED VIEW(PE-48A82T) - 46 -...
  • Page 47 EXPLODED VIEW PARTS LIST The components identified by mark critical for safety. Replace only with part number specified. Part No. Description 3680V00007A LENS,SEKINOS SSM-75(50) . . 4810V00395F BRACKET,BLUE LENS+COUPLER+CPT S/S 4810V00395E BRACKET,GREEN LENS+COUPLER+CPT S/S 4810V00395D BRACKET,RED LENS+COUPLER+CPT S/S 120-D38E SPEAKER,MID-RANGE 8 OHM 15/25W 87DB 6401VD0006G SPEAKER,FULLRANGE(L)WOOFER+TWEETER 6401VD0006H...
  • Page 48 EXPLODED VIEW(PE-53A82T) - 48 -...
  • Page 49 EXPLODED VIEW PARTS LIST The components identified by mark critical for safety. Replace only with part number specified. Part No. Description 3680V00007A LENS,SEKINOS SSM-75(50) 4810V00395F BRACKET,BLUE LENS+COUPLER+CPT S/S 4810V00395E BRACKET,GREEN LENS+COUPLER+CPT S/S 4810V00395D BRACKET,RED LENS+COUPLER+CPT S/S 120-D38E SPEAKER,MID-RANGE 8 OHM 15/25W 87DB 12 6401VD0006G SPEAKER,FULLRANGE (L)WOOFER+TWEETER 6401VD0006H...

  • Page 50: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC871 0ISK115000A IC,SE115N(LF12) 3P 115V ERROR AMP IC887 0ILI817000G IC,LTV817M-VB 4P,DIP BK PHOTO COU IC001 0IAL241610B IC,AT24C16-10PC-2.7 8PIN DIP ST E IC,LTV817M-VB 4P,DIP BK PHOTO COU IC891 0ILI817000G IC001 0ISM555000A...
  • Page 51 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D434 0DS113379BA DIODE,SWITCHING 1SS133 T-72 D907 0DD226239AA DIODE,SWITCHING KDS226 SOT-23 D435 0DS113379BA DIODE,SWITCHING 1SS133 T-72 D908 0DD226239AA DIODE,SWITCHING KDS226 SOT-23 DIODE,SWITCHING 1SS133 T-72 DIODE,SWITCHING KDS226 SOT-23 D437 0DS113379BA D910 0DD226239AA D600 0DS113379BA DIODE,SWITCHING 1SS133 T-72...
  • Page 52 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION ZD902G 0DZ110009AD DIODE,ZENER MTZJ11B TP ROHM-K DO34 - 11V Q203 0TR387500AA TR,CHIP 2SC3875S(ALY) KEC ZD902R 0DZ110009AD DIODE,ZENER MTZJ11B TP ROHM-K DO34 - 11V Q204 0TR387500AA TR,CHIP 2SC3875S(ALY) KEC TR,CHIP 2SC3875S(ALY) KEC ZD1001 0DZ620009BB DIODE,ZENER MTZJ6.2B TP ROHM-K DO34 0.5W...
  • Page 53 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 54 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 55 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 56 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 57 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 58 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 59 0LA0102K119 INDUCTOR,10UH K P002 366-173G CONNECTOR,2.5MM 8*2P AEPH-254 A/K R/A L308 0LA0102K119 INDUCTOR,10UH K P002A 366-921H CONNECTOR,2.5MM 9P GIL-G LG CABLE . L401 150-717J COIL,CHOKE 560UH (E/W) P003 366-173L CONNECTOR,2.5MM 12*2P AEPH-254 A/K R/N L402 6140VE0001P COIL,LINEARITY 12UH 0.1PHY 30.5TURN...
  • Page 60 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 61 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 62 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 63 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 64 For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic RN : Metal Film RF : Fusible LOCA.
  • Page 65 125-022K ACCESSORIES L217 125-022K FILTER,EMC FERRITE 1UH TAPING L218 125-022K FILTER,EMC FERRITE 1UH TAPING 3828VA0273J MANUAL,OWNERS FS LG FR 058F TX 335A , L219 125-022K FILTER,EMC FERRITE 1UH TAPING 6710V00058F REMOTE CONTROLLER EYE 43KEY FILTER,EMC HH-1M3216-501 3216MM R L501 6210TCE001G...
  • Page 66 SOCKET,CPT PCS628-03L(W/BAND)100K OHM SK902 381-226L SOCKET,CPT PCS628-03L(W/BAND)100K OHM SK903 381-226L SOCKET,CPT PCS628-03L(W/BAND)100K OHM RL801 141-018F RELAY,DG5D1-0-2 DAIICHI 5V 0.000106A TU101 6700VPF013A TUNER,TAUC-S120D LG PRECISION CO., L “ 6700VPF012A TUNER,TAUC-M130D TU102 6700VPF013B TUNER,TAFC-S120P LG PRECISION CO., L “ 6700VPF012B TUNER,TAFC-M130P VA801 164-003D...
  • Page 68 (WIDE)

  • Page 73: Svc. Sheet

    SVC. SHEET : 3854V A0094A-S1 SVC. SHEET : 3854V A0094A-S2 SVC. SHEET : 3854V A0094A-S3 SVC. SHE...

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