LG GOLD STAR CI21Q20ET, Manual

Page 1: ...al is at least 1mV 60dBu the picture will be noise free in any area NOTE AGC must be adjusted when the tuner was changed O Screen Voltage Adjustment 1 Tune the TV set to receive a digital pattern 2 Press PSM RED button on remote controller standard picture 3 Connect the probe of oscilloscope to the RK Red Cathode of CPT Board 4 Adjust Screen Volume of FBT so that the waveform is the same as below ...

Page 2: ...izontal Shift Adjust so that the vertical center line of a digital circle pattern is in accord with geometric vertical center of the CPT EW Horizontal Width Adjust to that a digital circle pattern looks like exact circle EP East west Parabolar Adjust so that middle portion of the outermost left and right vertical line looks like parallel with vertical lines of the CPT EC East west Coner Adjust so ...

Page 3: ...FF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF Function Remark BG LL BG DK BG Only II Only TOP OFF TOP ON LIST OFF LIST ON EYE OFF EYE ON D K NICAM OFF D K NICAM SYSTEM OPTION Data SYSTEM TOP LIST EYE DK NICAM 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48...

Page 4: ...rk Amplify Y signal GAIN 6dB 14 OSD LANG 5 OSD LANG ACMS OFF ACMS ON Headphone Off Headphone On OPTION Data GAI 5LANG ACMS HP 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON ...

Page 5: ...ltage of C827 Check Replace D808 811 T803 Check Replace Q104 Q802 RL801 IC842 Check Replace D805 806 IC803 IC801 Does the square waveform from pin40 of IC501 appear Check Replace IC501 No No No No 110Vdc Open OK 254 380V 0V 10 14Vdc 0V Lower than 18V Normal 110Vdc 0V OK Yes Yes Yes Yes Check the voltage 8V Line Check Replace D816 D821 IC841 D824 Is the waveform of collector of Q401 normal Check I2...

Page 6: ...in24 25 of ICN01 normal Check Replace XN01 ICN01 Check the Audio signal of pin25 of IC604 normal Check the Audio signal of pin44 of ICN01 normal Check Replace IC604 Check AM line Are the Audio signal of pin1 9 of IC601 normal Check RO LO lines Are the Audio signal of pin4 6 of IC601 normal Check Replace Q601 IC101 Q602 D601 D602 R612 R614 Check the voltage of Q601 Base Check the voltage of pin7 of...

Page 7: ...PICTURE Block NO SOUND Blcok Check Replace ZD102 5V 33V power lines Check Replace IC501 NO RASTER SOUND OK Normal Normal Abnormal Normal Abnormal Abnormal Check the Heater pulse of HT of T406 Check the voltage of HT of CPT Board Check Replace Connector FR915 Check the voltage of HV G2 of CPT Check Replace P901A P901B ZD904 IC901 D902 904 P901 Check Replace T406 Check Replace T406 Check Replace TU1...

Page 8: ...ignal pin9 of IC701 Check the 5V line to be correct Check video signal at the pin38 of IC501 Check the voltage 5V of pin1 of IC805 Check Replace IC501 Check Replace IC701 X701 L701 R702 C713 Check Replace Q506 Q1101 C709 Check I2C BUS lines SDA SCL Check pin16 17 18 20 of IC701 Check Replace D505 508 C516 518 Check Replace IC502 Check 12V line R Y B Y line Are R G B signal of pin19 20 21 of IC501 ...

Page 9: ...udio AMP A1 OUT SCART2 A1 IN TV OUT TO SCART1 A2 IN H P TDA2822M AV3 IN SAW I K3953M SAW II L9454M 1 2 SAW III K9260M TDA4565 CTI option 8 7 SDA SCL EXT RGB Y V3 C3 TEXT DECODER SAA5281 SCL SDA EEPROM 24C16 SCL SDA SCL SDA 5V POWER ON OFF AC IN 200 250Vac 13V ST12V VERTICAL AMP TDA8350Q Va Vb E W 15V 45V HDT H OUT H DY V DY ST 5V 12V IR PRE AMP KEY TV AV ROTATE TUNER V1 V2 ST BY Power Supply Optio...

Page 10: ...PRINTED CIRCUIT BOARD MAIN CPT ...

Page 11: ...Service Sheet of PC 99DA CVBS Composite Video Croma Audio Waveform P N 3854VA0044B S DATE 1999 7 22 ...

Page 12: ... 1 EXPLODED VIEW 913 170 150 153 112 520 540 120 300 330 320 310 400 943 530 124 123 315 700 P801 ...

Page 13: ...154K BACK COVER ASSY LGEUK 3809V00154E BACK COVER ASSY LGEPL 520 6871VMM344A PWB ASSY MAIN PC 99DA 24 14 CL 6871VMM344B PWB ASSY MAIN PC 99DA 57 14 CK 6871VMM344C PWB ASSY MAIN PC 99DA 27 14 CI 6871VMM344D PWB ASSY MAIN PC 99DA 30 14 CB 530 6871VSM444A PWB ASSY POWER CONTROL 540 6871VSM443A PWB ASSY A V STEREO 6871VSM443B PWB ASSY A V STEREO 700 0IGL120104A IC CDS SENSOR MODULE 913 332 057B SCREW ...

Page 14: ...0MW DIODE ZENER MTZJ8 2B TP ROHM K DO34 500MW DIODE ZENER MTZJ8 2B TP ROHM K DO34 500MW DIODE ZENER MTZJ18B TP ROHM K DO34 500MW DIODE ZENER MTZJ7 5B TP ROHM K DO34 0 5W DIODE ZENER MTZ6 2B TP 52MM ROHM ICN01 IC01 IC02 ICN02 IC03 ICN60 IC201 IC303 IC501 IC502 IC601 IC604 IC701 IC801 IC803 IC804 IC805 IC841 IC842 IC843 IC901 D02 D101 D111 D112 D231 D301 D302 D304 D307 D403 D404 D406 D407 D408 D409 ...

Page 15: ...6V M 22UF STD 16V M DESCRIPTION LOCA NO PART NO C202 C206 C221 C222 C231 C269 C301 C302 C304 C305 C306 C307 C311 C330 C331 C401 C402 C404 C406 C407 C408 C409 C410 C412 C413 C414 C415 C416 C430 C431 C501 C502 C505 C510 C511 C520 C521 C526 C528 C529 C531 C533 C536 C538 C539 C544 C545 C550 C571 C572 C579 0CE226DF618 0CE107DF618 0CN2210K519 0CN2210K519 0CE227DF618 0CX4700K409 0CE226BK618 0CE477BJ618 0...

Page 16: ...0 C1111 C1112 C1113 CN02 CN04 CN13 CN14 CN17 CN18 CN21 CN22 CN23 CN25 CN40 CN45 CN53 CN60 CN62 CN63 CN64 CN65 CP810 FB54 FB102 FB130 FB154 FB256 FB308 FB405 FB801 FB802 FB804 FB809 FB811 FB1101 J169 L253 L258 0CE227BF618 181 442Z 181 013L 0CE106DR618 0CE106DR618 0CK12202510 0CN1030F679 0CN1030F679 0CE475DK618 0CN1810K519 0CN1810K519 0CN1810K519 0CN1810K519 0CN4710K519 0CN4710K519 0CE227DD618 0CE33...

Page 17: ...HORIZONTAL 10MM 75UH TRANSFORMER SMPS EER4215 400UH TRANSFORMER ST BY EI 35 BULK DESCRIPTION LOCA NO PART NO P102B P103B P501A P501B P901A P901B P902A P902B PJ201 PJ202 PL1101 FR210 FR413 FR414 FR579 FR802 FR803 FR804 FR915 R01 R23 R24 R26 R27 R28 R37 R55 R56 R57 R59 R63 R65 R67 R71 R72 R77 R101 R104 R105 R127 R210 R237 R257 R301 R302 R303 387 B10C 387 A08B 387 917A 387 917A 6631V25021N 6631V25021...

Page 18: ...RN09 RN18 RN19 RN60 SWP801 SW1103 SW1104 SW1105 SW1106 T101 T102 T103 T501 T502 X501 X502 180 A01E 0RD4701F609 0RS0562J607 0RD0472F609 0RD4701F609 0RD6801F609 0RD0512H609 0RD1000F609 0RD1000F609 0RD1000F609 0RS1001H609 0RS1001H609 0RS1001H609 0RD2204H609 0RD1000F609 0RD1002F609 0RD1002F609 0RD1002F609 0RD1002F609 0RD0272H609 0RD0272H609 0RD0752F609 0RD1000F609 0RD1000F609 0RD1000F609 0RD1001F609 0...

Page 19: ...TER CIRC SAW OFWL9454M 40 4MHZ FILTER DSS306 93Y5S271M MURATA 50VOLT MANUAL OWNERS DG LG GE FR MANUAL OWNERS UK LG EN 009K MANUAL OWNERS ES LG SP PO MANUAL OWNERS IS LG IT 009Q MANUAL OWNERS FS LG FR 009K MANUAL OWNERS PL LG PL EN REMOTE CONTROLLER REMOTE CONTROLLER ANTENNA ROD W ADAPTER L 650 ANTENNA 2POLE 3SECTION SOCKET CPT 29 1 PHI SINGLE PCS629 03A PRE AMP SBX1677 02F 38 0KHZ SPARK GAP AG20PT...