LG 21FS2BLX, Service Manual

Page 1: ...R TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS CW62B MODEL 21FS2CLX 21FS2BLX MODEL 21FS2CLX ZV 21FS2BLX ZV website http biz lgservice com Oct 2006 Printed in China ...

Page 2: ...cautions 3 Control Descriptions 4 Specifications 7 Adjustment Instructions 8 SVC Remocon 13 Trouble Shooting 14 Printed circuit board 17 Block Diagram 19 Exploded View 19 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: ...ally F G Volume Up Down adjusts the volume adjusts menu settings OK accepts your selection or displays the current mode 5 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section 6 SLEEP sets the sleep timer 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 pict...

Page 5: ...12 I II selects the language during dual language broadcast selects the sound output option 13 Q VIEW or SWAP returns to the previously viewed programme 14 LIST or INPUT displays the programme table No function COLOURED BUTTONS These buttons are used for teletext only TELETEXT models or programme edit Without TELETEXT PIP PR PR OK VOL VOL With PIP Without TELETEXT PR PR OK VOL VOL Q VIEW LIST 1 2 ...

Page 6: ...urrent mode F F G G Volume Up Down option adjusts the volume adjusts menu settings D D E E Programme Up Down option selects a programme or a menu item switches the set on from standby 6 AUDIO or AUDIO L R VIDEO IN SOCKETS AV IN2 option Connect the audio video out sockets of external equipment to these sockets 7 EYE option adjusts picture according to the surrounding conditions Note Shown is a simp...

Page 7: ...z Middle East Africa AC 230V 50 60Hz EU CIS 4 Follow each drawing or spec for spec and performance of parts based upon P N of B O M 5 Warm up TV set for more than 20min before the measurement No 1 2 3 4 5 6 7 8 Item Receiving System Available Channel Input Voltage Market Screen Size Tuning System Operating Environment Storage Environment Remark EU Non EU OPTION Non EU EU NTSC M Non EU EU PAL 200 P...

Page 8: ...e the signal of red raster 3 Unfasten DY and push DY to FUNNEL direction 4 Make R Land be centered as cross Purity Magnet That time 4 6 pole magnet should keep free gauss status 5 Make uniform RED Raster as moving DY Check there is purity problem or not on R G B white Raster Then fix screw of DY At this time be careful about inclination and DY should be fixed keeping horizontality 6 Check the TV s...

Page 9: ...ent model so please refer to the model adjust TABLE 7 Deflection setting Data Adjustment 7 1 Adjustment preparation 1 TV set to receive an Digital pattern PAL E5ch NTSC US 12 2 Deflection data setting used remote 3 press the LINE SVC MODE IN START KEY into SERVICE MENU Choice SERVICE2 to adjustment mode 4 Press CH CH KEY chooice adjust item 5 Press VOL VOL KEY increase or decrease DATA 7 2 Adjustm...

Page 10: ...ing 13 V SCROLL Adjust the center vertical line of the geometrical with the CPT center vertical line same 14 V ZOOM fixed VERTICAL ZOOM 15 WBR fixed Timing of wide Blanking 16 WBF fixed Timing of wide Blanking 17 V SYNSLI fixed Vertical slicing level 18 OVRVOLIN fixed Over voltage input mode 19 V GUARD fixed Vertical guard mode 8 initial data for deflection Table 4 Initial data for deflection by m...

Page 11: ...EU 1 1 0 1 2 2 2 2 8 37 1 1 18 18 3 3 10 EU 1 1 0 1 2 0 2 2 8 37 1 1 Refer PIP data Description WHITE STRETCH BLACK STRETCH BLACK STRATCH DEPTH DYNAMIC SKIN CONTROL VIDEO DEPENDENT CORING PEAKING FREQUENCY DELAY RATION POSITIVE NEGATIVE PEAKS RATION PRE AFTER SHOOT PEAK WHITE LIMITER DAC IF DEMODULATIOR CHROMA SENSITIVITY AUTO COLOR LIMITING Clamping delay 50 Clamping delay 60 Clamping Pulse Lengt...

Page 12: ... 55 60 Mild 60 55 55 50 Game 50 55 60 50 11 OPTION Adjustment PAL 1 OPTION Adjustment need by Model name used the remote controller press the IN START KEY and start adjust Choice OPTION 1 2 3 4 5 adjust one by one 2 OPTION1 0 255 OPTION2 0 255 OPTION3 0 250 OPTION4 0 337 OPTION5 0 252 12 SOUND PRE SCALER This SVC data settin by every buyer s spec so can t change it W he 6Xe eW2 f V X V W Y f V XfW...

Page 13: ... 13 SVC REMOCON ...

Page 14: ...k the waveform at pin 4 12 of IC601 Check Replace Q603 NO OK Check the waveform at pin 6 of IC601 Check Replace IC601 NO OK Check the waveform at pin 1 2 14 15 of IC601 Check Replace R823 D826 Check the Heater voltage of CPT 6 6 4 Vrms Check R G B out of CPT board Check IC901 P402A Check 190V line of CPT Board if no problem check and Replace Check the Heater pulse of FBT T402 Check RF901 P903C P90...

Page 15: ...11 Check T401 each pin voltage Check Q401collect waveform Check Replace T402 Check the voltage pin4 of IC810 Check Replace IC810 IC802 Q830 Check Fuse and Diode of secondary Load of SMPS trans T802 Check the B at D829 cathode OPEN Check Replace DB801 NO Check Replace Fuse and IC810 NO OK NO Normal Abnormal Check Replace Q402 Check Replace T401 Check Replace Q401 Check Q402 collector waveform Check...

Page 16: ...k pin8 12 SCL SDA Check IC12 EEPROM SCL SDA Line Check pin3 Reset Voltage Check IC11 pin 83 84 85 R G B out Check SMPS Trans Secondary Voltage Go to No sound picture OK Check the waveform pin73 H out Check IC11 pin 83 84 85 R G B out Check receiving system in MENU execute Auto Program Does the auto Program operate properly Store on manual program MENU ...

Page 17: ... 17 PRINTED CIRCUIT BOARD MAIN ...

Page 18: ... 18 SIDE A V ...

Page 19: ... 19 BLOCK DIAGRAM ...

Page 20: ... 20 EXPLODED VIEW 112 913 170 943 400 300 520 174 330 310 320 600 121 120 105 150 ...

Page 21: ...21FS2 ABS HF 380 1KEY LGEMA 5020900066B Button POWER 21FS2 LGESY LOCAL ABS H 400 3809900201C Cover Assembly 21FS2 LGEMA CW62B 21 SCART SIDE 3P NO E P 3809900167G Cover Assembly 21FS2CG TS MC059C 21 SY SET 3809900167H Cover Assembly 21FS2CLD TV CW62B 21 SY LGESY IR 520 EBR33392703 PCB Assembly Main MAIN M I CW62B 21FS2CLX ZV QUHLLCP EBR33392708 PCB Assembly Main MAIN M I CW62B 21FS2CLX ZV QUZLLCP E...

Page 22: ...G1E11G 220uF 20 10V 255MA EGR475M050T1G1C11G 4 7uF 20 50V 50MA SMS5 0TP50VB22M 22uF 20 50V 108MA CH UP050 F104Z B B Z 100nF 20TO 80 50V LOCA NO PART NO DESCRIPTION IC12 IC301 IC302 IC601 IC802 IC810 IC823 IC824 IC826 IC901 Q602 Q830 SW Q105 Q11 Q201 Q301 Q302 Q303 Q401 Q402 Q404 Q405 Q502 Q503 Q504 Q505 Q506 Q603 Q803 Q804 Q805 Q806 Q809 Q810 Q811 Q840 D101 D102 D11 D301 D302 D401 0IAL241610B 0IPM...

Page 23: ...ART NO DESCRIPTION C506 C509 C510 C512 C513 C516 C519 C520 C530 C531 C532 C533 C535 C536 C538 C540 C544 C546 C547 C548 C551 C553 C554 C556 C557 C558 C559 C561 C562 C563 C564 C569 C570 C571 C572 C576 C577 C578 C579 C580 C581 C584 C585 C586 C587 C590 C591 C592 C595 C596 C597 C599 0CQ1031N509 0CE106DF618 0CN1040K949 0CN1040K949 0CE337DD618 0CE226DD618 181 007F 0CN1040K949 0CN2220F569 0CN2230H949 0CF4...

Page 24: ... DESCRIPTION L1202 L1203 L204 L206 L207 L401 L402 L501 L503 L504 L505 L506 L507 L509 L511 L514 L548 L801 T401 T402 T802 G1 G13 G14 G19 G2 G20 G21 G22 G24 G26 G27 G29 G30 G31 G32 G36 G37 G38 G39 G42 G43 G44 G45 G47 G48 G49 G50 G51 G52 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 0LA0102K119 150 717J 6140VY0020C 0LA0121K119 0LA0121K119 0LA0121K119 0LA0121K119 0LA0121K119 0LA0121K119 0LA0102K119 0...

Page 25: ...510 R101 R103 R11 R110 R111 R112 R117 R119 R12 R120 R121 R13 R14 R15 R16 R17 R19 R203 R204 R205 R206 R207 R212 R213 R215 R225 R226 R227 R228 R23 R252 R253 R301 R303 R304 R306 R307 R308 R309 R310 R311 R313 R314 R315 R316 0RP0050H709 0RF0470K607 0RD1001F609 0RD1001F609 0RD1001F609 0RD1001F609 0RD0222A609 0RD3902F609 0RD2202F609 0RD3601F609 0RD1000F609 0RD1000F609 0RD6802F609 0RD1002F609 0RD3301F609 ...

Page 26: ...ESCRIPTION R545 R547 R548 R549 R550 R551 R552 R553 R554 R555 R556 R557 R558 R562 R563 R566 R567 R568 R569 R572 R576 R577 R580 R581 R582 R583 R584 R585 R587 R591 R592 R595 R606 R608 R611 R612 R613 R616 R617 R618 R619 R811 R812 R813 R816 R817 R819 R820 R821 R822 R823 R824 0RD0752F609 0RD1203F609 0RD2200F609 0RD3301F609 0RD1000F609 0RD1000F609 0RD1000F609 0RD1000F609 0RD1501F609 0RD6800F609 0RN3902F4...

Page 27: ...2W 6 5X2 3MM RDM92T1J470K 470KOHM 5 1 2W 6 5X2 3MM RD 96T1J220R 220OHM 5 1 6W 3 2X1 8MM THVH472GBC 1C1P 12VDC 0 05A VERTICAL THVH472GBC 1C1P 12VDC 0 05A VERTICAL THVH472GBC 1C1P 12VDC 0 05A VERTICAL THVH472GBC 1C1P 12VDC 0 05A VERTICAL THVH472GBC 1C1P 12VDC 0 05A VERTICAL THVH472GBC 1C1P 12VDC 0 05A VERTICAL SDKLA1 AC 250VAC 5A 1PCS 1C1P VERTICAL LOCA NO PART NO DESCRIPTION 152F L3N S 23 RADIAL 1 ...

Page 28: ...P No EBY31683801 2006 08 22 ...

Page 29: ...SVC SHEET EBY31683801 S ...