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LG 21FS2ALX, Service Manual

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LG 21FS2ALX Service Manual Download Page 2

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CONTENTS

Contents ...................................................................................................................2

Safety Precautions..............................................................................................3

Control Descriptions..........................................................................................4

Specifications........................................................................................................7

Adjustment Instructions .................................................................................8

Trouble Shooting.................................................................................................12

Printed circuit board.........................................................................................16

Block Diagram ......................................................................................................18

Exploded View....................................................................................................20

Exploded View Parts List ..............................................................................21

Replacement Parts List .................................................................................22

SVC. Sheet..................................................................................................................

Summary of Contents for 21FS2ALX

Page 1: ...COLOR TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 049C MODEL 21FS2ALX RG RL RLX MODEL 21FS2ALX RG RL RLX TC ...

Page 2: ...ety Precautions 3 Control Descriptions 4 Specifications 7 Adjustment Instructions 8 T rouble Shooting 12 Printed circuit board 16 Block Diagram 18 Exploded View 20 Exploded View Parts List 21 Replacement Parts List 22 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 position connect one lead of ...

Page 4: ...amme or a menu item switches the set on from standby scans programmes automatically F F G G Volume Up Down adjusts the volume adjusts menu settings OK accepts your selection or displays the current mode 6 Q VIEW returns to the previously viewed programme 7 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 8 PSM Picture Status Memory recalls yo...

Page 5: ... on from standby 13 I II option selects the language during dual language broadcast option selects the sound output 14 LIST displays the programme table 15 SLEEP sets the sleep timer 16 SSM Sound Status Memory option recalls your preferred sound setting 17 SURROUND º º option selects surround sound No function COLOURED BUTTONS These buttons are used for teletext only TELETEXT models or programme e...

Page 6: ...our 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 6 AUDIO VIDEO IN SOCKETS AV2 option Connect the audio video out sockets of external equipment to these sockets 7 HEADPHONE SOCKET option Connect the headphone plug to this socket Note Shown is a simp...

Page 7: ...put Voltage 110 240V 50 60Hz 4 Measurement must be performed after heat run more than 20min 5 Adjusting Standard for this chassis is followed a special standard No 1 2 3 4 5 6 7 8 Item Receiving System Receiving Channel Input Voltage Market Screen Size Tuning System Operating Environment Storage Environment Remark For EU For Non EU For EU For Non EU NTSC M Multi model Non EU EU Initial Model for E...

Page 8: ...olume of FBT jack When width line is seen turn the FBT screen volume at the position of disappearance it 4 Press the TV AV button to exit SVC mode 5 White balance adjustment NOTE When adjusting white balance automatically connect the adjustment JIG in SVC mode When pressing MUTE button on remote control it changes to CPU OFF MODE and screen displays AUTO 1 Receive 100 white pattern 2 Adjust LOW Li...

Page 9: ... Width adjustment Adjust until the outmost left and right lattice of received pattern is accord with 25 of other lattice width 7 ET Trapezoidal adjustment Adjust to make the length of top horizontal line same with it of the bottom horizontal line 8 EP Pin Cushion adjustment Adjust so that middle portion of the outermost left and right vertical line look like parallel with vertical lines of the CPT...

Page 10: ...3 0 1 2 3 0 1 Function 21A 21B 21C 29F 25F 28WF 32WF 28N 34F 29N 25N BG I DK BG I DK L BG I DK M BG L RF STEREO AV STEREO MONO MONO DUAL No using Using AV2 DVD SCART1 GAME EYE TX KEY DEGAU Option Code 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Function Without AV2 With AV2 Without DVD With DVD Without SCART With SCART Without GAME function With GAME function Without EYE With EYE With PIP Without PIP 6 8 KEY ...

Page 11: ...AST EU2 CYRILLIC1 CYRILLIC2 CYRILLIC3 TURK GRE1 TURK GRE2 TURK GRE3 ARAB FRA ARAB ENG ARAB HEB1 ARAB HEB2 FARS ENG FARS FA FARS ALL AUTO WITHOUT HDEV WITH HDEV SETTING VOL MAX LNA A2_ST ECO TILT BOOST 2SCRT CHINA SSLIM Option Code 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Function Without LAN With LAN Without A2_ST With A2_ST Without SCART With SCART Without TILT With TILT Without BOOST With BOOST With 2SCR...

Page 12: ...k The voltage At pin of IC821 IC822 Q807 Check Replace C821 IC822 Q807 Check The Voltage At pin 2 19 20 21 24 of IIC11 Check Replace TU 101 Check Replace F806 D828 D805 OK OK OK OK OK OK NO NO NO NO NO NO No Raster Sound OK 1 2 Check the Heater voltage of CPT 6 6 4Vrm s Check HV Screen Voltage of CPT Check the Heater pulse of FBT T402 Check R G B out of CPT Board Check FBT T402 Check 185V line of ...

Page 13: ...Check T401 each pin voltage Check Replace T402 Check the Voltage Of C803 Check the Voltage Pin 4 OF IC801 Check Replace IC801 IC802 IC826 Check Fuse and Diode of secondary Load of SMPS trans T803 Check Replace IC11 Check Replace IC11 Check Replace Q402 Check Replace T401 Check Replace Q401 Check Replace Fuse Check Replace DB801 Check Replace Fuse IC801 NO OK OK OK NO Open NO 18 20V Normal Yes Yes ...

Page 14: ...p Check 1 8V 3 3V 5V DC Voltage Check SMPS Trans Secondary Voltage Check pin18 Reset Voltage Check IC13 Reset IC Check pin57 58 SCL SDA Check IC12 EEPROM SCL SDA Line RelaceIC11 Q501 Q503 Q504 R G B out of IC11 Check Replace CPT Board com ponent Go to No Sound Picture OK OK OK OK OK NO NO NO NO NO NO 3 3V DC OK OK 3 3V DC Check receiving system in MENU execute Auto Program ...

Page 15: ...age Of pin2 19 20 21 24 of IC11 Check the signal line of SPK L R Check pin 55 m ute of IC11 Check the waveform At pin2 4 of IC601 Check the waveform At pin6 of IC601 Check the waveform At pin8 9 11 12 of IC601 Check thevpltage At pin7 5 of IC601 Check Replace D828 D805 F806 Check the connection of side or Front AV Board P603A Replace IC601 AV OK OK OK OK NO NO OK OK NO NO NO NO Correct the Board N...

Page 16: ... 17 SIDE A V ...

Page 17: ...301 TDA4863A 14V 14V VA H OUT 35V H Vc c TU 33V S Vc c 6 5 V 12V B SAW FILTER Z101 PIP_BOARD SDA9489X S1117 18 IC825 S1117 33 IC853 KIA78S06P IC824 KA78R33 KA78R05C ST 5V ST 3 3V ST 1 8V 3 3V GAME HIC HIC01 190V VB H FLB IIC 33V 5V TV MONITOR OUT SCART RGB IN Y Cb Cr IN AV IN H Vc c 5V S Vc c PIP RGB PIP VIDEO IIC VS H FLB 5V ST 5V ON OFF DATA CLOCK RESET VIDEO AUDIO 190 V EW AMP IC302 28V ...

Page 18: ...MEMO 19 ...

Page 19: ... 20 EXPLODED VIEW 112 913 170 150 153 943 400 300 520 P801 330 310 320 600 121 120 105 ...

Page 20: ...ABS HF 380 1KEY SUPERSLIM 400 3809900167B BACK COVER ASSEMBLY 21FS2RLX 1PHONE SUPER SLIM LGESY LOCAL 3809V00621A BACK COVER ASSEMBLY 21FS2R 1PHONE SUPER SLIM 3809V00621D BACK COVER ASSEMBLY 21FS2RLX TC DVD 1PHONE CIS SUPER SLIM 3809V00621E BACK COVER ASSEMBLY 21FS2RLX TC DVD 1PHONE SUPER SLIM MC049C 3809V00621M BACK COVER ASSEMBLY21FS2RL TC DVD 1PHONE SUPER SLIM MC049C 520 68719MMU50E PWB PCB ASSE...

Page 21: ...NDE DO34 0 5W 9 1V MTZJ11B TP ROHM K DO34 500MW 11V 5MA MTZJ8 2B TP ROHM K DO34 8 2V 5UA MTZJ6 2A TP ROHM K DO34 0 5W 6 2V 150UA MTZJ5 6B TP ROHM K DO34 0 5W 5 6V 5UA LOCA NO PART NO DESCRIPTION IC11 IC11 IC12 IC13 IC301 IC302 IC601 IC801 IC802 IC821 IC822 IC824 IC825 IC826 IC853 IC901 Q104 Q11 Q301 Q302 Q303 Q401 Q402 Q403 Q404 Q405 Q501 Q502 Q503 Q504 Q505 Q507 Q508 Q510 Q601 Q801 Q802 Q803 Q804...

Page 22: ...C450 C457 C501 C501 C502 C502 C503 C504 C505 C506 C507 C508 C509 C510 C511 C512 C513 C514 C515 C515 C516 C516 C517 C518 C518 C519 C520 C521 C523 C524 C525 C526 C527 C527 C528 C528 C529 C529 C530 C531 0CK2710W515 0CE108DH618 181 009R 0CK2710W515 0CE108DH618 181 009R 0CK2710W515 0CE475DR618 0CE106BK618 181 010D 0CQ1041N509 0CQ1021N509 0CE226DK618 0CE476DK618 0CQ2231N509 0CQ3931N509 0CQ2231N509 0CQ39...

Page 23: ...20 C821 C822 C823 C824 C826 C826 C827 C828 C828 C829 C830 C831 C833 C835 C836 C837 C838 C839 C840 C843 C844 C845 C850 C868 C870 C901 C903 C904 C908 J210 J840 L101 L103 L11 L12 L202 L204 L206 L207 L208 L211 L213 L401 L402 L501 0CQZVBK002A 0CK1040K945 0CQZVBK002C 0CK1520K515 0CN1040K949 0CK4710W515 0CE477BH618 0CE477DD618 0CE108DD618 0CE108DD618 0CE477DD618 0CE108DD618 0CE477BF618 0CE477DD618 0CK471...

Page 24: ...PTION R109 R110 R111 R112 R113 R12 R124 R125 R1254 R1255 R126 R127 R13 R14 R15 R16 R17 R18 R19 R20 R202 R204 R205 R212 R213 R24 R25 R28 R29 R30 R301 R302 R303 R304 R305 R306 R307 R308 R308 R309 R31 R310 R310 R312 R313 R314 R315 R316 R317 R318 R319 R32 0RD0562F609 0RD8200F609 0RD0682F609 0RD1501F609 0RD3000F609 0RD1000F609 0RD2202F609 0RD8200A609 0RD1500A609 0RD1500A609 0RD1000F609 0RD1000F609 0RD1...

Page 25: ...3 OHM 1 6 W 5 00 TA52 LOCA NO PART NO DESCRIPTION R513 R514 R515 R516 R517 R518 R519 R520 R521 R522 R523 R524 R526 R527 R530 R532 R534 R535 R536 R539 R540 R542 R543 R545 R555 R557 R558 R563 R563 R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 R615 R616 R617 R618 R619 R620 R621 R624 R664 0RD0332F609 0RD0332F609 0RD1600F609 0RD1600F609 0RD1600F609 0RD0222F609 0RD2701F609 0RD100...

Page 26: ...GE 1 2 W 1 5K 10 PLIKOR HIGH SURGE 2 2M OHM 1 2 W 7 0 5 00 TA52 10 OHM 1 6 W 5 TA52 SKHV17910B 12V 0 05A HORIZONTAL 160G SKHV17910B 12V 0 05A HORIZONTAL 160G SKHV17910B 12V 0 05A HORIZONTAL 160G SKHV17910B 12V 0 05A HORIZONTAL 160G SKHV17910B 12V 0 05A HORIZONTAL 160G SKHV17910B 12V 0 05A HORIZONTAL 160G SDKEA3 ALPS IEC 250V 8A HORIZONTAL 480G LOCA NO PART NO DESCRIPTION FB801 FB802 FB803 FB825 T8...

Page 27: ...P NO 3854VA0204A S1 2004 12 15 ...

Page 28: ...SVC SHEET 3854V A0204A S ...

Page 29: ...Feb 2006 Printed in Korea P NO 3828VD0219D ...

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