Table of Contents
Advertisement
Quick Links
COLOR TV
SERVICE MANUAL
CHASSIS : MP-015A
MODEL : PT-53A83T
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
RS
CATV
CA
TV
TV /
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
Advertisement
Table of Contents
Related Manuals for LG PT-53A83T
Summary of Contents for LG PT-53A83T
-
Page 1: Service Manual
COLOR TV SERVICE MANUAL CHASSIS : MP-015A MODEL : PT-53A83T 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 /... -
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 Exploded View Parts List................45 Replacement Parts List ................46 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
7. NUMBER BUTTONS switches the set on from standby or directly select a number. 8. PSM (Picture Status Memory) recalls your preferred picture setting. 9. VCR BUTTONS (With TELETEXT) control a LG video cassette recorder. - 8 -... -
Page 9: Battery Installation
10. TV/AV selects TV or AV mode. clears the menu / text from the screen. switches the set on from standby. 11. TURBO PICTURE BUTTON POWER selects Turbo picture. I/II TV/AV 12. TELETEXT BUTTONS (option) These buttons are used for teletext. TURBO SOUND PICTURE... -
Page 10: Front Panel
Front panel • PT-48/53A83 series MUTE MENU MUTE MENU TV/AV TV/AV ON/OFF ON/OFF • PT-43A83 series MUTE MENU TV/AV ON/OFF (Side panel) 1. MAIN POWER (ON/OFF) 8. REMOTE CONTROL SENSOR switches the set on or off. 9. EYE (option) (Volume Up/Down) adjusts picture according to the surrounding adjusts the volume. -
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
X=0.280 and Y=0.300 (Deviation : ! 0.01). 3. Pattern Position Adjustment 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 - 44 -... -
Page 45: Exploded View Parts List
SPRING,KNOB 5020V00393B BUTTON,POWER WHITE 6871VSM741D PWB ASSY,CONTROL 5020V00458A BUTTON,CONTROL 4KEY 4810V00328G BRACKET,CONTROL 60HR 6871VSM756A PWB ASSY,PSW 3091V00258J CABINET ASSY,LG.100HZ 4980V00132A SUPPORTER,CRT&LENS ETC . 3809V00182D BACK COVER ASSY 3809V00190D BACK COVER ASSY,UPPER 5018V00017A MIRROR,PLASTIC(53N) 4810V00221C BRACKET,MAIN 4810V00327M BRACKET,REAR A/V NO SCART... -
Page 46: Replacement Parts List
REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC891 0ILI817000G IC,LTV817M-VB 4P,DIP BK PHOTO COU IC901B 0IPH611190A IC,TDA6111Q 9SIP RGB AMP IC001 0IAL241610B IC,AT24C16-10PC-2.7 8PIN DIP ST E IC,TDA6111Q 9SIP RGB AMP IC901G 0IPH611190A IC001 0ISM555000A IC,SDA5550 MQFP100 BK MICOM TXT M IC901R... - Page 47 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D435 0DS113379BA DIODE,SWITCHING 1SS133 T-72 TP ROHM D931 0DD060009AC DIODE,TVR06J 0.6A/600V 250NS TP G.I D437 0DS113379BA DIODE,SWITCHING 1SS133 T-72 TP ROHM D932 0DD060009AC DIODE,TVR06J 0.6A/600V 250NS TP G.I DIODE,SWITCHING 1SS133 T-72 TP ROHM DIODE,TVR06J 0.6A/600V 250NS TP G.I D600 0DS113379BA...
- Page 48 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION ZD1006 0DZ620009BB DIODE,ZENER MTZJ6.2B TP ROHM-K DO34 0.5W Q214 0TR387500AA TR,CHIP 2SC3875S(ALY) KEC ZD1007 0DZ620009BB DIODE,ZENER MTZJ6.2B TP ROHM-K DO34 0.5W Q215 0TR387500AA TR,CHIP 2SC3875S(ALY) KEC TR,CHIP 2SC3875S(ALY) KEC ZD1008 0DZ620009BB DIODE,ZENER MTZJ6.2B TP ROHM-K DO34 0.5W Q216...
- Page 49 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 50 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 51 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 52 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 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 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 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 FR886 125-022K FILTER,FERRITE 1UH TAPING ACCESSORIES FILTER,FERRITE 1UH TAPING L217 125-022K L218 125-022K FILTER,FERRITE 1UH TAPING 3828VA0288F MANUAL,OWNERS AP/A83 LG EN 049PTX 395 L501 6210TCE001G FILTER,HH-1M3216-501 CERATEC 3216MM 6710V00049P REMOTE CONTROLLER L503 125-022K FILTER,FERRITE 1UH TAPING MISCELLANEOUS FILTER,HH-1M3216-501 CERATEC 3216MM...
- Page 63 (WIDE)
-
Page 68: Svc. Sheet
SVC. SHEET : 3854V A0094A-S1 SVC. SHEET : 3854V A0094A-S2 SVC. SHEET : 3854V A0094A-S3 SVC. SHE... - Page 69 Oct.,2001 P/NO : 3828VD0096E Printed in Korea...