LG KT-17LZ21 Service Manual Download Page 1

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Digital LCD Combi TV

SERVICE MANUAL

CAUTION

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

CHASSIS : ML-027B

MODEL : KT-17LZ21

website:http://biz.LGservice.com

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

Summary of Contents for KT-17LZ21

Page 1: ...D Combi TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS ML 027B MODEL KT 17LZ21 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...DUCT SAFETY 3 SPECIFICATION 4 DESCRIPTION OF CONTROLS 7 ADJUSTMENT INSTRUCTION 11 TROUBLE SHOOTING 14 BLOCK DIAGRAM 15 PRINTED CIRCUIT BOARD 16 EXPLODED VIEW 19 EXPLODED VIEW PARTS LIST 20 REPLACEMENT PARTS LIST 21 SVC SHEET ...

Page 3: ...n 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 measured resistance should be between 1MΩ and 5 2MΩ When the exposed metal has no return path to the chassis the reading must be infinite Any oth...

Page 4: ...ject to change without notice for improvement 4 General Specification TV 1 2 3 4 5 6 7 8 9 Video input applicable system Receivable broadcasting system RF input channel Input voltage Picture size Tuning system Operting environment Storage environment Display 1 PAL D K B G I 2 NTSC M 3 PAL I 4 SECAM NTSC 4 43 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L 5 NTSC M 6 PAL N M 7 NTSC M VHF E2 E12...

Page 5: ... Pr 7 Line1 Ready 9 LINE2 11 LINE3 13 Line3 Ready 2 Y GND 4 Pb GND 6 Pr GND 8 LINE1 10 Line2 Ready 12 SWITCH GND 14 SWITCH 1 Rising Time 12 17 13 23 2 Fall Time 13 17 12 23 Item Specification Remark Unit No 10 Digital GND Japan only LED Green Red Amber 23 inch 17 inch 23 inch 17 inch 23 inch 17 inch H V Sync ON ON OFF ON ON OFF Video Active OFF OFF Power consumption 67 17 90 23 3 0 W W W W ms ms T...

Page 6: ...10 Video Audio read decoding and converting applicable system Mechanism Maximum storage capacities Protections Input voltage Video out Audio out Dimension Operating Environment Storage Environment DVD Video Single Double layer DVD R RW DVD R RW Video CD CVD SVCD CD R RW CD Audio MP3 Audio CD Digital Audio CD TEXT 1 Slim Dimensional DVD loader 2 Disc loading mororized 3 Electronics anti vibration s...

Page 7: ...PIP BUTTONS option PIP switches the sub picture on or off PR selects a programme for the sub picture SWAP alternates between main and sub picture INPUT selects the input mode for the sub picture SIZE adjusts the sub picture size STILL freezes motion of the sub picture POSITION relocates the sub picture in up down or left right direction SCAN switches on the programme scan mode through 3 12 sub pic...

Page 8: ...NS controls a LG DVD player For further details see the DVD Operation section 20 ARC select your desired picture format Note In teletext 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 batterie...

Page 9: ...LAY illuminates brightly when the set is switched on POWER STANDBY indicator MONO indicator STEREO indicator DUAL indicator DPM indicator 9 STOP Stops playback 10 PLAY PAUSE Start or pause playback 11 SKIP SCAN Starts playback from the selected chapter or track 12 REPEAT Repeat playback 13 OPEN CLOSE Open or close the disc tray Note When DISC TRAY doesn t work press the OPEN CLOSE button on the si...

Page 10: ...T 7 HEADPHONE SOCKET Connect the headphone plug to this socket 8 AUDIO VIDEO IN SOCKETS AV Connect the audio video out sockets of external equipment to these sockets S VIDEO AUDIO IN SOCKETS S VIDEO Connect the video out socket of an S VIDEO VCR to the S VIDEO socket Connects the audio out sockets of the S VIDEO VCR to the audio sockets as in AV Back panel Side panel ANT IN 75 Ω PC SOUND DVD OUT O...

Page 11: ...narily before adjustment if there is no specific designation Heat Run must be performed with the full white signal or TV noise signal in the internal part of the set The time for Heat Run can be changed owing to production plan 3 PC Input Mode Adjustment 3 1 Required Test Equipment 1 MSPG 925LTH or A pattern generator Gray pattern of 16 tones 2 A adjustment communicator 3 2 Preparation for Adjustm...

Page 12: ... 628 28 4 POS 23 1 SVGA 72 800 600 72 1040 240 120 POS 64 56 48 077 50 0 666 66 6 POS 23 37 Mode H_Display V_Display V_Frequency H_Total H_Blanking H_Sync H_Polarity H_Vp H_Fp H Freq KHz Clk MHz V_Total V_Blanking V_Sync V_Polarity V_Bp V_Fp SVGA 75 800 600 75 1056 256 80 POS 160 16 46 875 49 5 625 25 3 POS 21 1 SVGA 85800 600 85 1048 248 64 POS 152 32 53 674 56 25 631 31 3 POS 27 1 XGA 60 1024 76...

Page 13: ...k 100 Program 200 Program TEXT Off TEXT On CH Sound Non Memory CH Sound Memory TOP OFF TOP ON SCART OFF SCART ON FM Stereo Dual FM Mono GB I DK M GB I DK L Reserved Reserved OSD Lang HDEV VOL ACMS PIP Text Option Code 0 1 0 1 0 1 0 1 0 1 2 3 4 Function Remark PIP Text PIP Text not display ACMS On ACMS Off OFF Middle Asia Vol On HDEV Off HDEV ON Eng only Eng Deut Fran Ital Esp 2 6 EU5 Netherlands 4...

Page 14: ... lamp 3 Input error of inverter connector 2 Check the connector input TROUBLESHOOTING 1 General Features 2 PC Mode No Symptom Cause Check Point No Symptom Cause Check Point Check Point 1 Screen noise Clock or phase being 1 Resettig is needed according to the video card of each not able to be adjusted PC 2 Horizontal noise adjust phase until no horizontal noise occurres 3 Vertical noise adjust cloc...

Page 15: ...BLOCK DIAGRAM ...

Page 16: ...PRINTED CIRCUIT BOARD MAIN TOP ...

Page 17: ...MAIN BOTTOM ...

Page 18: ...SIDE AV DVD CONTROL LED TV CONTROL ...

Page 19: ...EXPLODED VIEW 524 500 530 581 570 320 390 582 400 401 550 300 112 311 310 560 120 120 521 540 541 580 522 523 340 350 330 360 370 380 330 ...

Page 20: ...1U BACK COVER ASSEMBLY KT 17LZ21 DVD COMPONENT 411 960A NON 401 3550V00335A COVER REAR AV 17LZ20 ABS HF 380 NON 500 6871VMMQ91D PWB PCB ASSEMBLY MAIN ML 027B KT 17LZ21 MANUAL ASSY 521 4950V00168B METAL SHIELD NON FOR DVD 522 4950V00191A METAL SHIELD ET KZ 17LZ21 523 4810V00896A BRACKET REAR AV 17LZ20 NON NON 524 4950V00167G METAL FRAME EGI 530 6633VA0003V INVERTER ASSEMBLY 15V NON ECT 6LAMP 03T VE...

Page 21: ...8 100UF STD 16V M FL TP5 C993 0CE106DF618 10UF STD 16V M FL TP5 C111 0CH2472K516 4700P 50V K B 2 0X1 25 R TP C286 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C287 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C288 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C319 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C326 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C331 0CH2473K516 47000P 50V K B 2 0X1 25 R TP C354 0CH2473K51...

Page 22: ...50V 10 X7R 2012 R TP C412 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C413 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C414 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C415 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C421 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C423 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C427 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C429 0CH31...

Page 23: ...V 10 X7R 2012 R TP C841 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C891 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C894 0CH5101K416 100PF 50V 5 NP0 2012 R TP C895 0CH5101K416 100PF 50V 5 NP0 2012 R TP C901 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C903 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C906 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C909 0CH3104K5...

Page 24: ...0178A DIODE UDZS TE 17 5 1B ROHM R TP ZD4 0DZRM00178A DIODE UDZS TE 17 5 1B ROHM R TP DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION ZD5 0DZRM00178A DIODE UDZS TE 17 5 1B ROHM R TP ZD601 0DZRM00178A DIODE UDZS TE 17 5 1B ROHM R TP ZD602 0DZRM00178A DIODE UDZS TE 17 5 1B ROHM R TP ZD603 0DZRM00178A DIODE UDZS TE 17 5 1B ROHM R TP ZD801 0DZ330009BA DIODE ZENER HZT33 TAPING IC401 0IZZTS...

Page 25: ...P R1008 0RH2200D622 R 220 1 10W 5 D R TP R1010 0RH1201D622 R 1 2K 1 10W 5 D R TP R1015 0RH4701D622 R 4 7K 1 10W 5 D R TP R104 0RH1000D622 R 100 1 10W 5 D R TP DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R105 0RH1000D622 R 100 1 10W 5 D R TP R106 0RH0000D622 R 0 1 10W P TYPE TAPPING R107 0RH4701D622 R 4 7K 1 10W 5 D R TP R108 0RH0000D622 R 0 1 10W P TYPE TAPPING R109 0RH1000D622 R ...

Page 26: ...2202D622 R 22K 1 10W 5 D R TP R45 0RH1000D622 R 100 1 10W 5 D R TP R457 0RH1000D622 R 100 1 10W 5 D R TP DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R458 0RH1000D622 R 100 1 10W 5 D R TP R47 0RH1000D622 R 100 1 10W 5 D R TP R472 0RH4701D622 R 4 7K 1 10W 5 D R TP R473 0RH4701D622 R 4 7K 1 10W 5 D R TP R476 0RH1000D622 R 100 1 10W 5 D R TP R477 0RH1000D622 R 100 1 10W 5 D R TP R480 ...

Page 27: ... 100 DATE 2004 2 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION RA502 0RRZVTA001A R MNR 14 E0A J 101 R OHM 100 RA504 0RRZVTA001A R MNR 14 E0A J 101 R OHM 100 RA511 0RRZVTA001A R MNR 14 E0A J 101 R OHM 100 RA512 0RRZVTA001A R MNR 14 E0A J 101 R OHM 100 RA525 0RRZVTA001D R 22 OHM 1 16 W 1608 5 R TP RA526 0RRZVTA001D R 22 OHM 1 16 W 1608 5 R TP RA701 0RRZVTA001A R MNR 14 E0A J 101 R OHM 100 RA702 0...

Page 28: ... 2 0MM 550MM P2301 6631V20010F CONNECTOR ASSEMBLY 8P 2 0MM 350MM SW2001 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2002 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2003 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2004 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2005 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2006 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2101 140 313B SWITCH TACT TACT 2LEAD 160G TA SW2102...

Page 29: ...4450 3854VA0140A S1 1 2 03 10 07 ...

Page 30: ...3854VA0140A S1 2 2 03 10 07 ...

Page 31: ...SVC SHEET 3854VA0140A S1 ...

Page 32: ...Feb 2004 Printed in Korea P NO 3828TSL101F ...

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