manualshive.com logo in svg

LG RT-29FC90RB, Service Manual, Page: 15 / 44

Share
Download
LG RT-29FC90RB Service Manual Download Page 15

- 15 -

TROUBLE SHOOTING

17.8V

Q401, Q402, T401.

67V

R407,D861,FB854.

R865,R864,L853,D850,FB856.

1V

pin 2 of FBT. 

2Vp-p

0V

Q871,Q852,Q854,

IC803,IC851

Check pin 2 of P004A.

Check / Replace

Check / Replace

IC801 and the 
secondary part of
POWER circuit.

Check / Replace

R809,D802,R803,R810.

Check / Replace

SW1101,F1101,T1101,

DB814,TH810.

Check / Replace

Check / Replace

Check / Replace

IC501S.

Check / Replace

FR359,FR360,D339,D349,IC301.

Check / Replace

IC001,Q002.

Check / Replace

Check the voltage at

pin 4 of STR.

Check the voltage at

pin 10 of P004A.

Check the voltage at

Check the voltage of C404(+).

Check the voltage of C821.

pin 5 of P214A.

Check the H-DRV voltage at

135V

5.5Vp-p

0V

Summary of Contents for RT-29FC90RB

Page 1: ...ERVICE MANUAL CHASSIS MC 035B MODEL RT 29FC90RB RP website http biz LGservice com e mail http www LGEservice com techsup html PR VOL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

Page 2: ...FETY PRECAUTIONS 3 SPECIFICATIONS 4 CONTROL DESCRIPTIONS 5 ADJUSTMENT INSTRUCTIONS 8 TROUBLE SHOOTING 15 PRINTED CIRCUIT BOARD 20 BLOCK DIAGRAM 27 EXPLODED VIEW 30 EXPLODED VIEW PARTS LIST 31 REPLACEMENT PARTS LIST 32 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: ...en Mode Multi Picture Display Mode Film Mode Noise Reduction Progressive Scan Motion Detection Swivel Speaker Digital Eye Specification TOP FLOF 2000 page option LG code 4 Side or Front 1 Rear 3 2 Rear option Full SCART 1 AV1 option 1 AV1 option BG DK BG I L RZ model option BG DK BG I L RZ model option O O O O O O O option 29FB90 O No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Min 0 85 3 0 40 0 4 0...

Page 5: ...r 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 clockwise direction SCAN switches on or off the programme scan mode through 12 sub pictures 7 RESET initalize the adjusted value 8 POWER switches...

Page 6: ...V mode switches the set on from standby 21 LIST displays the programme table 22 SWAP returns to the previously viewed programme selects a favourite programme COLOURED BUTTONS These buttons are used for teletext Only TELETEXT models or programme edit Internal generator charge The communicator can be charged with the internal electric generator To charge the communicator do the followings 1 In first...

Page 7: ...onditions 8 HEADPHONE SOCKET Connect the headphone plug to this socket 9 AUDIO VIDEO IN SOCKETS AV4 Connect the audio video out sockets of exter nal equipment to these sockets S VIDEO AUDIO IN SOCKETS S AV Connect the video out socket of an S VIDEO VCR to the S VIDEO socket Connect the audio out sockets of the S VIDEO VCR to the audio sockets as in AV4 10 PC INPUT SOCKET option Connect the monitor...

Page 8: ...T manufacturing place This adjustment must follow the sequence as shown picture below 4 2 Purity Adjustment 1 Degauss the CPT and CABINET enough 2 Receive red RASTER signal PG50ch 3 Remove fixing screw of DY and stick DY to opening part CPT FUNNEL part 4 Make crossing adjustment to the Magnet of CPT and make the R land is placed on center correctly At this moment 4 pole and 6 pole magnet should be...

Page 9: ... which is specified in __clause c Change the CONTRAST BRIGHT and adjust to be 4 5 Ft_L d Adjust Y value of Low Light with GC G Cutoff and adjust X value with BC B Cutoff and make color coordinates of Low Light which is specified in __clause e Repeat the adjustment from a to d until the High Low color coordinates of _clause is satisfied f Check the adjusted color coordinates with white balance mete...

Page 10: ...rrect when checking NTSC60Hz 480P 1080I VGA Mode after finishing adjustment in PAL100Hz adjust each Mode again 8 OPTION Adjustment 8 1 Preparation for Adjustment 1 This option adjustment decides funtion in accordance with model Press the SVC TX adjustment button IN START button at SVC mode then adjust the option at OPTION 1 2 3 4 mode 2 Mark the option adjustment data like 111 11 111 11 in BOM Men...

Page 11: ...VOL ACMS Option Code 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Function Remark Without ACMS funtion With ACMS funtion NORMAL VOLUME CURVE RUSHED VOLUME CURVE Without HEADPHONE With HEADPHONE Without DVD INPUT With DVD INPUT AV3 Y C Without WOOFER With WOOFER Without VGA With VGA HIGH DEVIATION HDEV CH AU WIDE Option Code 0 1 0 1 0 1 0 1 0 1 Function Remark 4 3 TV 16 9 TV Without D K CHINA or BB sys With D K...

Page 12: ...U 5 English Other EU FARSI ARAB URDU E HINDI E I M V E THAI E CHINA West Europe East Europe Turkey EU1 EAST EU2 Cyrillic 1 Cyrillic 2 Cyrillic 3 Turkey Greek 1 Turkey Greek 2 Turkey Greek 3 Arab France Arab English Arab Hebrew 1 Arab Hebrew 2 Farsi English Farsi France Farsi all Funciton Table 4 OPTION 4 Funtion ...

Page 13: ...Mode LTI mode SYSTEM ASPECT S W SHP_CD ON OFF Sharpness Gain High F0 SYNC PHASE JUMP S W CLAMP SHIFT CLAMP PHASE CLAMP GATE VM coring level VM f0 setting VM limit level ITEM 2150 2151 ETC ITEM VM DL BLK 0 AKBOF VSAWO UP UP LO UP UP UG LO UG VASP UC PO AFC M RSTSW HB SW INPUT MAT O VFREQ SELS1 SELS2 FIX S V TC H WID HSEPS HD TC HYSW HS MA MACRO SELDU CLK S G SEL CBGAI CRGAI YGAIN HFREQ S BRI AGC L ...

Page 14: ... 14 ...

Page 15: ...OWER circuit Check Replace R809 D802 R803 R810 Check Replace SW1101 F1101 T1101 DB814 TH810 Check Replace Check Replace Check Replace IC501S Check Replace FR359 FR360 D339 D349 IC301 Check Replace IC001 Q002 Check Replace Check the voltage at pin 4 of STR Check the voltage at pin 10 of P004A Check the voltage at Check the voltage of C404 Check the voltage of C821 pin 5 of P214A Check the H DRV vol...

Page 16: ...903 Check the waveform at pin 62 63 64 of IC501S RGB out Check the waveform at pin 7 of IC901 902 903 Check FBT CPT socket CPT voltage of FBT Check Replace IC501S Check the waveform at pin 2 140 143 of IC101S Check the waveform at PIN100 of IC101S CVBS4 Check the waveform at PIN 38 41 46 of IC102S NO YES YES YES NO NO NO NO YES Check Replace IC401S FL201S 202S 203S Check Replace IC102S NO YES YES ...

Page 17: ...11 of P901B Checkthe waveform at pin10 of HIC951 Check the Vcc at pin11 135V Check the Vcc at pin4 12V NORMAL Q501 IC501S 18V D850 F851 Check the voltage at pin1 15 of IC650 SOUND AMP CHECK REPLACE IC650 2 5V 0V CHECK REPLACE Q601 Q602 L601 CHECK REPLACE TU101 Check the waveform at PIN 8 13 of IC 650 ...

Page 18: ...CE IC001 Check the voltage at pin 14 of T101 CHECK REPLACE TU101 CHECK REPLACE IC001 0V 2 5V Check Replace IC201S IC101S Check Replace Q108 C114 R119 Check Replace Check Replace Check the voltage at pin9 of TU101 Check the voltage at pin13 of TU101 5V Check the waveform at pin19 of TU101 Video Check the waveform at pin2 of P213A DON T CATCH CHANNEL MAIN R403 FB854 D861 ZD102 Check Replace IC854 F8...

Page 19: ...S From comp1 480p 1080i input Check the waveform at pin7 8 9 of IC401S From comp2 480p 1080i input YES NO DVD COMPONENT PICTURE OPTION YES NO YES NO YES NO IC501S R540 R541 IC301 D301 YES Check the voltage at pin 1 6 of IC301 Check the waveform at pin 12 of IC001 Check the waveform at pin 52 53 of IC501S Check Replace Check Replace IC201S Q206 Check Replace Check Replace FR359 FR360 D339 D349 NO p...

Page 20: ... 20 PRINTED CIRCUIT BOARD MAIN ...

Page 21: ...2 G91 D2 G92 D2 G93 D2 G94 D2 G95 D2 G96 D2 G98 F1 G99 D3 G100 F2 G101 F2 G102 C1 G103 C1 G104 C2 G105 C2 G106 G3 G107 E1 G108 F1 G109 D1 G110 D1 G111 B1 G112 B1 IC151 B1 IC190 C2 IC301 E4 IC401 C4 IC601 C4 IC603 C4 IC801 G2 IC802 F3 IC803 E3 IC851 D1 IC853 C2 IC855 B1 IC856 D3 P004 B5 P102 A5 P103 A5 P151 C1 P190 C2 P403 E3 P410 G5 P823 E1 P824 E1 P101A A4 P211A B5 P401A F4 P401B F4 P401C F4 P401...

Page 22: ... 22 100Hz TOP 100Hz BOTTOM ...

Page 23: ... 23 MICOM TOP MICOM BOTTOM ...

Page 24: ... 24 CPT CONTROL SIDE A V ...

Page 25: ... 25 SOUND POWER ...

Page 26: ... 26 BLOCK DIAGRAM 1 MAIN ...

Page 27: ... 27 2 100HZ PROGRESSIVE ...

Page 28: ... 28 3 MICOM ...

Page 29: ...MEMO 29 ...

Page 30: ...124 120 122 125 121 112 913 170 150 153 510 300 700 530 312 600 301 550 560 520 501 570 503 174 943 400 540 311 310 571 123 124 125 330 320 EXPLODED VIEW 30 ...

Page 31: ...T 3809V00492E BACK COVER ASSEMBLY RT 29FC90RB NON 035B CKD 501 4810V00379A BRACKET MAIN 32Q08D MC017A HIPS 60HR NO 4810V00379X BRACKET MAIN RE 32FZ40 MC035A HIPS 407AF A CORE 4810V00379Z BRACKET MAIN RT 32FZ40RB MC035B HIPS 40AF AHLLKG 503 4811V00024S BRACKET ASSEMBLY REAR AV RT 32FZ40 MC035B 576P 510 6871VSMQ42C PWB PCB ASSEMBLY SUB CPT MC035B 29Ó LG FLAT LGEVN8 6871VSMW06A PWB PCB ASSEMBLY SUB C...

Page 32: ... CHIP 2SC3875S ALY KEC CHIP 2SC3875S ALY KEC CHIP 2SC3875S ALY KEC CHIP 2SA1504S ASY KEC CHIP 2SC3875S ALY KEC KSA733C Y TO 92 LOCA NO PART NO DESCRIPTION D850 HIC951 IC001 IC002 IC003 IC004 IC005 IC006 IC008 IC009 IC101S IC102S IC106S IC1251 IC190 IC201S IC202S IC203S IC204S IC205S IC206S IC207S IC301 IC401 IC401S IC501S IC502 IC601 IC603 IC650 IC801 IC802 IC803 IC851 IC853 IC854 IC855 IC856 IC90...

Page 33: ...VR06J 600V 250NSEC TVR06J 600V 250NSEC TVR06J 600V 250NSEC LOCA NO PART NO DESCRIPTION D910 D950 DB814 LD01 ZD001 ZD003 ZD004 ZD101 ZD102 ZD1201 ZD1202 ZD1205 ZD1206 ZD1251 ZD1252 ZD351 ZD403 ZD601 ZD901 ZD930 C001 C007 C009 C011 C013 C018 C025 C028 C030 C034 C035 C036 C042 C045 C047 C054 C059 C062 C064 C083 C101 C102 C103 C104 C105 C106 C108 C109 C1130 C114 0DD400509AA 0DD060009AC 0DRGS00011A 0DL...

Page 34: ... NO PART NO DESCRIPTION C207 C208 C212 C213 C213 C214 C216 C217 C219 C219 C220 C220 C221 C222 C225 C227 C239 C244 C301 C303 C304 C305 C306 C306 C307 C307 C308 C308 C309 C310 C310 C313 C313 C313 C314 C316 C317 C319 C322 C323 C324 C324 C327 C328 C329 C332 C332 C333 C338 C339 C340 C348 0CE226DF618 0CE226DF618 0CN4710K519 0CE4763F618 0CN4710K519 0CN1030F679 0CE105DK618 0CE477DF618 0CE227BF618 0CE227DF...

Page 35: ... D 100V 10 4 7UF SRE SE 50V 20 LOCA NO PART NO DESCRIPTION C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C620 C621 C622 C623 C624 C625 C626 C627 C628 C629 C631 C631 C631 C632 C632 C633 C634 C635 C636 C637 C638 C639 C640 C641 C641 C642 C642 C643 C644 C645 C646 C648 C649 C649 0CN4720F569 0CN4720F569 0CN2210K519 0CN1520F569 0CE475DK618 0CE475DK618 0CN3320F5...

Page 36: ...1KV 10 10 2200UF SHL SD 63V M 470PF 500V K B TR 100UF STD 100V M 220UF STD 10V M 10UF STD 25V M LOCA NO PART NO DESCRIPTION C870 C871 C872 C873 C875 C900 C901 C902 C902 C903 C904 C905 C906 C907 C908 C910 C911 C912 C914 C915 C916 C917 C919 C925 C950 C951 C952 C953 C954 C955 C956 C957 C958 C959 C960 CP2 JA1 JA201 JA201 1 JA205 L101 L1201 L1202 L1203 L1204 L1205 L204 L205 181 091D 0CE227DP650 0CE227B...

Page 37: ...HM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 MNR 14 E0A J 101 R OHM 100 OHM 5 0 02 OHM 1 W 20 0 02 OHM 1 W 20 LOCA NO PART NO DESCRIPTION 0RP0050H709 0RP0020J809 0RF047...

Page 38: ... NO DESCRIPTION R413 R414 R415 R416 R417 R418 R419 R420 R421 R422 R423 R424 R425 R426 R430 R431 R434 R450 R451 R490 R514 R536 R601 R602 R611 R612 R613 R614 R615 R616 R617 R618 R619 R620 R621 R623 R624 R625 R628 R629 R630 R631 R632 R632 R633 R633 R634 R634 R635 R636 R641 R642 0RN4701F409 0RD3602F609 0RD3301F609 0RN4702F409 0RD4700F609 0RD2701A609 0RN1501F409 0RD1001F609 0RD0221F609 0RD1001A609 0RD2...

Page 39: ...M 1 6 W 5 2K OHM 1 6 W 5 LOCA NO PART NO DESCRIPTION R864 R865 R866 R867 R868 R870 R873 R874 R876 R877 R902 R903 R905 R906 R907 R908 R909 R910 R911 R912 R914 R915 R916 R917 R918 R921 R929 R930 R938 R946 R947 R950 R951 R952 R953 R954 R955 RC601 ZD851 SG904 SG905 SG906 SG907 SG908 SW01 SW02 SW03 SW04 0RF0161K607 0RF0161K607 0RS1002H609 0RD7502A609 0RD1002F609 0RD4702F609 0RD4701F609 0RD4701F609 0RN1...

Page 40: ...LTER EMC 62MM 1UH FILTER EMC 62MM 1UH FILTER EMC BFD3565R2F FILTER EMC 62MM 1UH FILTER B P LPF 2EA SMD TH355LSK K5214 FILTER B P LPF 1EA SMD H354LAI K5206 FILTER B P LPF 1EA SMD H354LAI K5206 FILTER EMC 62MM 1UH FILTER EMC 62MM 1UH FILTER EMC 62MM 1UH FILTER EMC 62MM 1UH FILTER EMC 62MM 1UH FILTER EMC FBMH3216 HM501NT FILTER EMC 62MM 1UH FILTER EMC FBMH3216 HM501NT FILTER EMC FBMH3216 HM501NT FILT...

Page 41: ...P N 3854VA0123A S1 1 2 DATE 2003 07 17 ...

Page 42: ...P N 3854VA0123A S1 2 2 DATE 2003 07 17 ...

Page 43: ...SVC SHEET 3854V A0123A S1 SVC SHEET SVC SHEET ...

Page 44: ...Jan 2005 Printed in Korea P NO 3828VD0155H ...

Reviews:

No comments