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LG WT-32Q81IP, Service Manual

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LG WT-32Q81IP Service Manual Download Page 19

- 19 -

Trouble Shooting

18V

Q401, Q402, T401.

(OPTION)

33V

FR848,D811,R407.

D813,L801,IC804,R811,R812.

3V

pin 2 of FBT. 

3.3V

0V

Q12,Q851,Q852,Q853,D813

Check pin 42 of IC01.

Check / Replace

Check / Replace

IC801 and the 
secondary part of
POWER circuit.

Check / Replace

D802,R801,R857.

Check / Replace

SW1101,F1101,T801,D801,R802.

Check / Replace

Check / Replace

Check / Replace

ICP(V)01

Check / Replace

Q804,Q805,R813,ZD801

Check / Replace

IC1,IC301,FR359,FR360,
D339,D349

Check / Replace

Check the voltage at

pin 9 of STR.

Check the voltage at

pin 50 of IC01.

Check the voltage at

Check the voltage of C828(+).

Check the voltage of C834(+).

pin 50 of ICP(V)01.

Check the H-OUT voltage at

135V

Summary of Contents for WT-32Q81IP

Page 1: ...ICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 006A MODEL WT 32Q82IP MODEL WT 32Q81IP website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...ty Precautions 3 Specifications 4 Control Descriptions 5 Disassembly Instructions 8 Adjustment Instructions 9 T rouble Shooting 19 Wiring Diagram 25 Exploded View 26 Exploded View Parts List 27 Replacement Parts List 28 SVC Sheet ...

Page 3: ...perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals 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 positioin connect one lead of...

Page 4: ...dio out A V in out O External In Output Audio In 0 5Vrms 3db over 10Kohm Audio Out 0 5Vrms 3db below 1Kohm Video In Out 1Vp p 3db 75ohm R G B In 0 7Vp p 3db O Feature Auto programme Manual programme SVM Scanning Velocity Modulation Digital Eye Digital Comb Filter Auto Sleep Dynamic Focus Programme Editing PSM Picture Status Memory SSM Sound Status Memory CTI Teletext 128 page Turbo Search Picture ...

Page 5: ...b picture POSITION relocates the sub picture in clockwise direction 2 12 PIP switches on or off the programme scan mode through 12 sub pictures 5 MENU selects a menu 6 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 7 NUMBER BUTTONS sw...

Page 6: ...letext mode the PR SWAP and INPUT buttons are used for teletext function Battery installation The remote control handset is powered by two AAA type batteries To load the batteries turn the remote control handset over and open the battery compartment Install two batteries as indicated by the polarity symbols and marked inside the compartment Note To avoid damage from possible battery leakage remove...

Page 7: ...IDEO VCR to the audio sockets as in AV4 6 TV AV option selects TV or AV mode clears the menu text from the screen switches the set on from standby 7 MENU selects a menu 8 OK accepts your selection or displays the current mode F F G G Volume Up Down adjusts the volume adjusts menu settings D D E E Programme Up Down selects a programme or a menu item switches the set on from standby 9 PC INPUT SOCKE...

Page 8: ...in2 Power Def Sound Amp Board 2 Remove respective 6 screws for speaker on the front cabinet Fig 2 2 CPT Removal 1 Pull out the CPT board from the CPT neck 2 Place the front cabinet on soft material not to mar the front surface or damage control knobs 3 Remove 4 screws securing the picture tube mounting brackets to the front cabinet 4 Carefully separate CPT from the front cabinet PICTURE TUBE HANDL...

Page 9: ... adjustment 1 Tune the TV set to receive an 100 white pattern 2 Press Channel UP DOWN button for desirous function Adjustment 3 Press Volume UP DOWN button to adjust the data 4 Adjust until CONTRAST and BRIGHT become 3 5 Ft_L 5 Enter the SVC mode by pressing the SVC button 6 Adjust the Y value of High Light with G DRIVE and adjust the X value with B DRIVE until they have the color coordinate of Hi...

Page 10: ...PTION 2 OPTION 3 Teletext 1 Press YELLOW button or OP1 OP2 OP3 OP4 button on SVC Remote Controller 2 Input data directly by the buttons corresponded with OPTION1 0 127 OPTION2 0 63 OPTION3 0 127 and TELETEXT 6 131 3 Select each OPTION function by the CH Up Down button and then set up each OPTION by the VOL Up Down button Table 1 OPTION 1 Function Table 2 OPTION 1 CODE Data Menu VS VA HS EW EP ET A...

Page 11: ... 2 EYE 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 OPTION Data 200 PR TSEAR I II SV TOP A2 ST SYS 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1...

Page 12: ... 0 1 2 EYE 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 OPTION Data 200 PR TSEAR I II SV TOP A2 ST SYS 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 13: ... 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 3 0 1 2 EYE 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 OPTION Data 200 PR TSEAR I II SV TOP A2 ST SYS 247 248 249 250 251 252 253 254 255 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 14: ... 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 Table 4 OPTION 2 CODE Data 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 DATA ACMS VOL H PHO DVD WOOFER Q30 VGA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 15: ... 0 SAV 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 DATA ACMS VOL H PHO DVD WOOFER Q30 VGA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 16: ...1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 SAV 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 DATA ACMS VOL H PHO DVD WOOFER Q30 VGA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Page 17: ...w 2 Farsi English Farsi France Farsi all Funciton English English German French Italian Spanish English Dutch Swedish Norwegian Danish Swiss Portuguess Roman ian Polish Hungarian Czech Russian English Farsi English French Arab Urdu English Swedish Norwegian Danish Finish English Indonesian Malaysian Vietnamese English Thai English China English French Swedish Czech German Spanish Itallian Polish F...

Page 18: ... 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 400 401 402 403 404 405 LANG 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 TLAN 6 7 8 9 10 11 12 13 14 15 16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 0 1 2 3 4 5 6 7 8 DATA 406 407 408 409 410 411 412 413 414 415 416 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 600 601 602 603 604 605 60...

Page 19: ...POWER circuit Check Replace D802 R801 R857 Check Replace SW1101 F1101 T801 D801 R802 Check Replace Check Replace Check Replace ICP V 01 Check Replace Q804 Q805 R813 ZD801 Check Replace IC1 IC301 FR359 FR360 D339 D349 Check Replace Check the voltage at pin 9 of STR Check the voltage at pin 50 of IC01 Check the voltage at Check the voltage of C828 Check the voltage of C834 pin 50 of ICP V 01 Check t...

Page 20: ...T PCB ASSY Check Replace Q210 Q204 IC201 Check Replace TU101 Retrace line is Screen is black visible Check the waveform at pin 12 of P501A Check the waveform at pin 26 28 30 of IC702 Check the waveform at pin 24 of TU101 Check FBT CPT socket CPT voltage of FBT Q2902 Q2907 Q2908 Q2909 Check Replace IC702 Check Replace at pin 45 of IC702 Check the waveform Q2910 FR2948 VM coil ...

Page 21: ...waveform at pin12 of P501A DON T CATCH CHANNEL MAIN FR848 FR829 D811 R121 ZD101 Check Replace R124 IC101 IC104 Check Replace IC502 IC701 IC702 Check Replace Q211 Check Replace Check Replace Check the voltage at pin16 of TU102 PIP Check the voltage at pin13 of TU102 PIP Check the waveform at pin24 of TU102 PIP Check the waveform at pin6 of P502A FR848 FR829 D811 R121 ZD101 Check Replace R124 IC101 ...

Page 22: ... 2 of IC660 Check the waveform at pin 8 of IC660 Check the voltage at Q601 Q602 Check Replace IC660 Check Replace IC601 Check Replace NO CENTER SPEAKER SOUND BUT MAIN SOUND OK NO WOOFER SPEAKER SOUND BUT MAIN SOUND OK 0V 5V Q603 Check Replace IC601 Check Replace NORMAL NO IC650 Check Replace IC1 Q606 Check Replace 0V 3V ...

Page 23: ...ck Replace FR448 D413 IC401 Check Replace Q404 Q405 Check Replace D402 C408 Check the voltage at pin 1 6 of IC301 Check the voltage at pin 40 of IC201 Check the waveform at pin 9 10 of P503A Check Replace Check Replace IC201 Check Replace Q209 C12 Check Replace IC2 Check Replace at pin 21of IC1 Check the waveform Check Replace FR359 FR360 D339 D349 ...

Page 24: ...veform at FB882 D885 Check Replace IC601 IC602 X601 Check Replace IC610 Q604 Q605 Check Replace IC601 Check Replace P604A H P JACK Check Replace IC605 Check Replace TU101 Check Replace Q112 Q113 Check Replace IC1 Q606 Check Replace TU101 Check Replace Z103 Q111 Check Replace Check the Waveform at pin 44 of IC601 3V 0V Check Replace IC601 IC602 X601 Check the waveform at pin 21 of TU101 NO NORMAL N...

Page 25: ...2 P806 P807 D G COIL P7 C P602A P601A FRONT A V P901A P1 P601B P902A P301A P650A P806 D G COIL P806 P1103 P602A P6A P604A P802 P601A B P807 1 1 D P906 P901B P6B P1015 P905 P902B PCB P402 POWER CORD A 1 P802 P807 P1151 CONTROL PWB E 2 D LEAD TWISTER HOLDER CABLE TIES BAND 1 3 CPT EARTH LEAD 2 POWER CORD P301A P902A ...

Page 26: ...530 501 800 503 540 520 510 174 122 121 120 150 170 913 112 400 943 123 300 315 125 124 600 310 330 320 610 570 550 560 EXPLODED VIEW 26 ...

Page 27: ... 3809V00231L BACK COVER ASSY 76 501 4810V00259G BRACKET MAIN 32Q82 407AF V2 503 4810V00368C BRACKET REAR A V 2PHONE SPRAY 131 132 4810V00368E BRACKET REAR A V 2PHONE 76 510 6871VSM694C PWB ASSY CPT VM LG32 520 6871VMM637K PWB ASSY MAIN 006A WT32Q80 PH PH 530 6871VDM113F PWB ASSY MAIN2 006A LG32 W 0 ST BY 540 6871VSM726A PWB ASSY WIDE RANGE 550 6871VSM617A PWB ASSY DIGIT MC006A 100HZ BOD 560 6871VS...

Page 28: ...06J TP DIODE RECTIFIER TVR06J TP DIODE RECTIFIER TVR06J TP DIODE RECTIFIER TVR06J TP DIODE RECTIFIER TVR06J TP DIODE RECTIFIER TVR06J TP LOCA NO PART NO DESCRIPTION D813 IC1 IC2 IC3 IC04 IC05 IC6 IC7 IC8 IC9 IC101 IC104 IC201 IC301 IC401 IC501 IC502 IC504 IC601 IC602 IC605 IC610 IC650 IC701 IC702 IC703 IC704 IC801 IC802 IC803 IC804 IC831 IC832 IC833 IC881 IC882 IC883 IC901 IC902 IC903 IC1251 Q109 ...

Page 29: ...S ASY KEC TR 2SA1980Y TR 2SA1980Y TR CHIP 2SA1504S ASY KEC TR 2SC5343Y TR 2SC5343Y TR 2SC5343Y TR 2SC5343Y TR 2SC5343Y LOCA NO PART NO DESCRIPTION Q209 Q210 Q211 Q212 Q308 Q401 Q402 Q404 Q405 Q501 Q503 Q603 Q604 Q605 Q606 Q607 Q701 Q702 Q703 Q704 Q705 Q706 Q707 Q708 Q709 Q710 Q711 Q713 Q714 Q715 Q801 Q802 Q803 Q804 Q805 Q851 Q852 Q853 Q881 Q882 Q900 Q1301 Q1302 Q1303 Q2902 Q2907 Q2908 Q2909 Q2910 ...

Page 30: ... FL TP5 LOCA NO PART NO DESCRIPTION C244 C245 C246 C247 C249 C266 C267 C268 C269 C270 C303 C305 C306 C307 C308 C310 C312 C313 C316 C320 C324 C332 C333 C338 C340 C348 C403 C404 C405 C406 C408 C409 C413 C414 C415 C416 C417 C418 C419 C422 C423 C426 C428 C430 C435 C438 C446 C447 C481 C482 C488 C501 181 064P 0CE225DK618 181 064P 0CE227DF618 0CN4710K519 0CE226DF618 0CE107DF618 0CE225DK618 0CE106DF618 0C...

Page 31: ... 4 100UF KME 35V M FL TP5 100UF KME 35V M FL TP5 LOCA NO PART NO DESCRIPTION C634 C635 C636 C637 C638 C639 C640 C642 C644 C645 C646 C647 C648 C649 C658 C660 C674 C677 C680 C681 C682 C683 C685 C686 C687 C688 C689 C690 C691 C692 C693 C694 C695 C697 C701 C708 C714 C715 C716 C718 C720 C724 C725 C729 C730 C738 C741 C746 C749 C753 C755 C758 0CE106DF618 0CE106DF618 0CE108DJ618 0CE108DJ618 0CK1030K945 0CE...

Page 32: ...5 4 7UF KME TYPE 250V 20 FL TP LOCA NO PART NO DESCRIPTION C905 C906 C907 C908 C910 C911 C912 C914 C915 C916 C917 C919 C925 C926 C1203 C1204 C1205 C1206 C1207 C1208 C1209 C1210 C1211 C1212 C1213 C1251 C1252 C1253 C1254 C1255 C1256 C1257 C1258 C2903 C2909 C2910 C2911 C2912 C2913 C2914 C2915 C2917 C2918 C2919 C2922 C2933 ZD01 F1101 FR849 FR851 0CK5610W515 0CN1040K949 0CN1040K949 0CE475DR618 0CE225DK...

Page 33: ...OR 100UH K INDUCTOR 10UH K INDUCTOR 10UH K INDUCTOR 10UH K LOCA NO PART NO DESCRIPTION 0LA0102K119 0LA0102K119 150 C02F 150 C02F 0LA0272K139 0LA0472K119 0LA0472K119 0LA0472K119 0LA0472K119 0LA0102K119 0LA0102K119 6170VC0002A 6174Z 6005S 151 E06A 6170VMCA01Y 151 A14E 387 A03A 387 A05H 387 B10D 387 812L 366 921L 387 J12J 387 B04F 387 812L 387 A05K 387 A03G 366 921L 387 A10G 387 916K 6631V23001L 387 ...

Page 34: ...37 R238 R239 R240 R241 R246 R247 R248 R249 R250 R253 R255 R261 R262 R263 R264 R265 R266 R267 R268 R269 R270 R279 R288 R292 R311 R312 R313 R314 R318 R324 R325 R326 R327 R328 R329 R330 R332 R342 R356 R358 R359 R368 R401 R404 R405 R406 0RD2200F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD1000F609 0RD0682F609 0RD5602F609 0RD1001F609 0RD1000F609 0RD1000F609...

Page 35: ...756 R801 R802 R803 R804 R805 R806 R807 R808 R809 R810 R811 R813 R814 R815 R816 R824 R825 R831 R835 R838 R840 R841 R842 R843 R844 R849 R851 R852 R853 R854 R855 R856 R857 R862 R880 R881 R882 R883 R884 R885 R886 R887 R888 R889 R890 R891 R892 R893 R894 0RD1000F609 0RN2202F409 0RN1002F409 0RS2002K607 180 822M 0RD1802H609 0RS0152K607 0RD5100F609 0RD2001F609 0RD1001F609 180 A01D 0RKZVTA001K 0RD7501F609 1...

Page 36: ... TA52 300 OHM 1 2 W 5 00 TA52 LOCA NO PART NO DESCRIPTION R2928 R2929 R2930 R2931 R2932 R2933 R2934 R2935 R2936 R2937 R2938 R2939 R2940 R2941 R2942 R2943 R2944 R2945 R2946 R2947 R2955 R2959 R2990 C916 FB901 SG401 SG901 SG902 SG903 SG904 SW1101 SW1151 SW1152 SW1153 SW1154 SW1155 SW1156 SW1157 F501 F503 F506 F701 F704 FB301 FB403 FB801 0RD0102F609 0RD1000F609 0RD0102F609 0RD1000F609 0RD0822F609 0RD0...

Page 37: ...X 5 7X3 FILTER FERRITE 1UH FILTER BI3857 FEELUX 5 7X3 FILTER BI3857 FEELUX 5 7X3 FILTER BI3857 FEELUX 5 7X3 FILTER SQE2930 36MH 0 5PHY 105TURN FILTER SQE3535 27 5MH 0 6PHY 70TURN RESONATOR CRYSTAL SUNNY RADIAL 6 000MHZ RESONATOR CRYSTAL SUNNY RADIAL 20 250MHZ RESONATOR CRYSTAL KJE RADIAL 18 432MHZ RESONATOR CRYSTAL KJE RADIAL 27 000MHZ RESONATOR CRYSTAL CSBLA500KECZF02 B0 FILTER DSS6NZ82A103Q93A D...

Page 38: ...P N 3854VA0075A S1 1 2 Date 2001 02 01 ...

Page 39: ...P N 3854VA0075A S1 2 2 Date 2001 09 14 ...

Page 40: ...SIDE AV 32Q80 SWITCH TACT 32Q80 PRE AMP 32Q80 VGA 32Q80 SIDE AV 29Q30 CRT 29Q30 LIMIT SWITCH 29Q30 Service Sheet of MC 006A P N 3854VA0075A S2 1 2 2001 02 01 ...

Page 41: ...R97 B4 R99 A5 R100 A5 R101 G5 R102 D5 R103 D5 R104 F5 R105 F5 R107 F5 R108 F5 R109 G5 R110 E5 R113 F5 R114 E5 R115 G5 R116 E5 R117 G5 R121 F5 R122 D5 R123 A1 R124 F5 R125 E4 R127 E5 R128 E5 R129 E5 R131 D5 R132 E5 R133 E5 R140 A3 R141 B3 R142 A2 R143 A3 R144 A3 R145 A3 R146 A5 R147 A5 R149 A1 R150 A1 R151 B4 R152 B4 R153 F5 R154 F5 R155 E5 R156 E5 R157 E5 R158 D4 R159 D4 R170 B5 R171 B5 R172 B5 R1...

Page 42: ...SVC SHEET 3854V A0075A S1 SVC SHEET 3854V A0075A S2 ...

Page 43: ...May 2002 Printed in Korea P NO 3828VD0073H ...

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