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COLOR TV

SERVICE MANUAL

CAUTION

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

CHASSIS : MC-019A

MODEL : RF-15FB50ME/MX/VE/VX

MODEL :

RF-21FB50RX/VX

MODEL :

RT-15FB50M/ME/VE

MODEL :

RT-21FB50RQ/V/VE/VQ/VX/VW

website:http://biz.LGservice.com

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

Mar,2004

Printed in Korea

P/NO : 3828VD0126N

Содержание RF-15FB50ME

Страница 1: ... THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 019A MODEL RF 15FB50ME MX VE VX MODEL RF 21FB50RX VX MODEL RT 15FB50M ME VE MODEL RT 21FB50RQ V VE VQ VX VW website http biz LGservice com e mail http www LGEservice com techsup html ...

Страница 2: ... 3 Servicing Precautions 4 Specifications 6 Description of Controls 7 Disassembly Instructions 10 Adjustment 11 Purity Convergence Adjustment 14 Block Diagram 17 Exploded View 18 Exploded View Parts List 19 Replacement Parts List 20 SVC Sheet ...

Страница 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...

Страница 4: ...s are integrated circuits and some fieldeffect transistors and semicounductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electostatic charge on your body by touching a known earth ground Alter...

Страница 5: ...the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the ...

Страница 6: ...SD On Screen Display EASY MENU O Voice coil impedance 8 ohm O Sound output 7W 2 MAX Dual Stereo A2 NICAM Option O External connection Head Phone Jack A V in 2 PERI Connector Full Scart 1 DVD in O External In Output Audio In 0 5Vrms 3dB over 10Kohm Audio Out 0 5Vrms 3dBb below 1Kohm Video In Out 1Vp p 3dB 75ohm DVD In Y 1Vp p 3dB Pb Pr 0 7Vp p 3dB O Feature Auto programme Manual programme CSM Color...

Страница 7: ...s a programme 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 selects a favorite programme 7 TELETEXT BUTTONS option These buttons are used for teletext For further details see the Teletext section ...

Страница 8: ...e used for teletext only TELETEXT models or programme edit 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 batteries as indicated by the polarity symbols and marked inside the compartment Note To avoid damage from possible battery leakage remove the batteries...

Страница 9: ...the front side panel can be received 10 HEADPHONE SOCKET option Connect the headphone plug to this socket 11 EYE option adjusts picture according to the sur rounding conditions 12 TURBO SOUND PICTURE option switches Turbo sound or Turbo picture function on or off Note Do not place any heavy objects over 4Kg on the RF RT 21FA30 31 32 series mod els ON OFF MENU OK VOL PR 1 3 4 5 9 10 ON OFF MENU VOL...

Страница 10: ...oval 1 Pull out the CPT board from the CPT neck 2 Place the front cabinet on soft material not to mar the front surface or damage control knobs 3 Remove 5 screws securing the picture tube mounting brackets to the front cabinet 4 Carefully separate CPT from the front cabinet PICTURE TUBE HANDLING CAUTION Due to high vacuum and large surface area of picture tube great care must be exercised when han...

Страница 11: ... SVC mode 2 Press the Yellow button several times to find OPTION 1 or OPTION 2 3 Input the correspond OPTION data referring to Table below with the numeric buttons 4 Press the OK V button to memorize the data Table 1 OPTION 1 Function Table 2 OPTION 2 Function Table 3 OPTION 3 Function ADJUSTMENT 21 FCD 12 FLAT 14 16 CPT 8 15 CPT 10 FLAT 20 21 CPT 12 CDL Data Remark 0 1 0 1 0 1 0 1 0 1 SCART TOP 2...

Страница 12: ...Press Channel UP DOWN button for desirous function adjustment 5 Adjust VOL or VOL button in each status of RG BG for X 272 8 Y 288 8 with color analyzer Europe Model X 288 8 Y 295 X 272 8 11 000K 7 Press the OK V button to memorize the data Test Point AGC TP C101 Adjust Remote Controller Tuner P N Marker AGC Voltage 6700VPF009G LG Innotek W S TUNER 2 7 0 05V 6700VPF016A DAEWOO W S TUNER 2 7 0 05V ...

Страница 13: ... is in accord with geometric horizontal center of the CPT VA Vertical Amplitude Adjust so that the circle of a digital circle pattern may be located within the effective screen of the CPT SC Vertical S Correction Adjust so that all distance between each horizontal lines are to be the same VS Vertical Shift Adjust so that the horizontal center line of a digital circle pattern is in accord with geom...

Страница 14: ...mpletely forward 5 Reconnect the internal degaussing coil 6 Position the beam bender locking rings at the 9 o clock position and the other three pairs of tabs 2 4 and 6 pole magnets at the 12 o clock position 7 Perform the following steps in the order given to prepare the receiver for the purity adjustment procedure a Face the receiver in the magnetic north direction b Externally degauss the recei...

Страница 15: ...e internal degaussing coil 9 Turn on the receiver connect a signal generator to the VHF antenna terminal and apply a crosshatch signal Caution During the convergence adjustment procedure be very careful not to disturb the purity adjustment tabs are accidentally move purity should be confirmed before proceeding with the convergence adjustments Note Make sure the focus is set correctly on this instr...

Страница 16: ... and blue horizontal lines Fig upper right 17 Temporarily place a rubber wedge at the 5 o clock and 7 o clock positions to hold the horizontal position of the yoke 18 Check the 3 o clock and 9 o clock areas to confirm that the red and blue vertical lines are converged If the lines are not converged slightly offset the horizontal tilt of the yoke move the temporary rubber wedges if necessary to equ...

Страница 17: ...7266 97 STEREO Sound Max SOUND AMP TDA7266 97 IC131 5V REG Option Part IIC Bus Line TDA9381 Non TXT Audio Mono TV OUT 28 33 21 22 38 Sound Trap Part Video OUT TV MNT OUT 50 42 51 53 STEREO B01K A13P MONO B01L 10 12 9 5 3 9 8 10 2 6 14V 1 ST BY TRANS 3W Opt SPK L OUT 24 25 47 44 AUDIO AM IN L L Only 30 39 31 40 28 30 14 39 8V From IC844 14 39 39 3 3V Reg 5V From IC842 3 3V 8V From IC844 IC844 8V RE...

Страница 18: ... 18 EXPLODED VIEW 913 170 150 112 153 943 400 330 320 120 300 121 310 174 520 ...

Страница 19: ... 21FB50 ABS 6KEY LGEEG 320 320 062E 320 062E SPRING COIL 330 5020V00737A 5020V00725A BUTTON POWER 330 5020V00939A BUTTON POWER 21FB50 ABS NON LGEEG 400 3809V00323A 3809V00A73B BACK COVER ASSY 3809V00323D 3809V00A73D BACK COVER ASSY 3809V00323B BACK COVER ASSY 3809V00477A BACK COVER ASSY 520 6871VMMP10E 6871VMMNA1L PWB ASSY MAIN MC019A 6871VMMS34Q 6871VMMNA1P PWB ASSY MAIN MC019A 6871VMMP10P 6871VM...

Страница 20: ...A DIODE RECTIFIERS EU1VZ LOCA NO PART NO DESCRIPTION D807 D808 D815 D824 D901 D902 D903 D904 DB801 LD01 ZD01 ZD101 ZD441 ZD442 ZD443 ZD501 ZD601 ZD901 Q01 Q102 Q103 Q211 Q212 Q213 Q214 Q215 Q216 Q301 Q402 Q442 Q551 Q552 Q553 Q554 Q555 Q571 Q621 Q651 Q653 Q671 Q672 Q801 Q802 Q806 C01 C02 C03 0DD300009AC 0DR060009AA 0DD060009AC 0DD420000BB 0DD420000BB 0DR210009AC 0DR210009AC 0DR210009AC 0DR140049AC ...

Страница 21: ...8 C509 C51 C511 C512 C513 C514 C515 C516 C517 C524 C529 C530 C532 C534 C538 C540 C541 C542 C548 C549 C551 C561 C573 C574 C593 C594 C595 C601 C602 C603 C605 C606 C607 C612 C621 C622 C623 C624 C625 0CQ2221N509 0CE105DK618 0CQ2221N509 0CE476DF618 0CE106DF618 0CN1030F679 0CE105DK618 0CN1020K519 0CN1020K519 0CQ1041N455 0CQ2231N509 0CQ2721N409 0CE106DF618 0CN1030F679 0CE225CK636 0CQ1041N509 0CE225DK618 ...

Страница 22: ...C829 C830 C831 C832 C834 C835 C841 C901 C902 C903 C904 C905 R655 J57 L04 L05 L102 L203 L205 L210 L401 L402 L501 L502 L503 L506 181 091U 0CK4710W515 0CQ1041N509 0CE337KV6A0 181 001V 0CK10201515 0CK10201515 181 506J 0CQZVBK002C 181 120K 0CE108DH618 0CE477DJ618 0CK4710W515 0CK4710W515 0CN1030F679 0CK4710W515 0CE107BH618 181 091Y 0CE227DP650 181 120N 0CK4710K515 181 091P 0CE107DF618 0CF1021047A 0CE475...

Страница 23: ...06 R07 R09 R10 R11 R13 R14 R15 R17 R18 R19 R101 R102 R103 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R12 R15 R16 R17 R19 R121 R122 R123 R124 R201 R204 R205 R206 0RD2200F609 0RD2200F609 0RD2200F609 0RD1002F609 0RD1000F609 0RD3301F609 0RD3301F609 0RD4701F609 0RD4701F609 0RD1000F609 0RD1000F609 0RD1001F609 0RD1000F609 0RD1603F609 0RD1000F609 0RD1001F609 0RD1000F609 0RD1203F...

Страница 24: ...LOCA NO PART NO DESCRIPTION R442 R444 R446 R447 R450 R451 R453 R455 R456 R501 R502 R503 R504 R505 R506 R51 R518 R52 R521 R522 R523 R524 R525 R526 R537 R538 R539 R540 R542 R544 R548 R551 R552 R553 R554 R555 R556 R557 R558 R559 0RD5100H609 0RD5100A609 0RD0392H609 0RD0392A609 0RD1001F609 0RD2401F609 0RD3001F609 0RD4701H609 0RD4701A609 0RD0392H609 0RD0822A609 0RD0822H609 0RS5602H609 0RS3302H609 0RS270...

Страница 25: ...PTION R815 R816 R903 R904 R905 R906 R907 R908 R909 R910 R911 R912 RC801 SW01 SW02 SW03 SW04 SW05 SW06 SW801 FB801 FB802 FB803 T551 T552 T553 T801 TH801 X01 X661 Z102 Z551 A1 A1 A1 A1 A2 A2 A2 A2 A2 A3 A3 0RD0751H609 0RD0751A609 0RD2001F609 0RD2200F609 0RD2200F609 0RD2200F609 0RD1000F609 0RD1000F609 0RD1000F609 0RS1501H609 0RS1501H609 0RS1501H609 0RD2204H609 0RD2204A609 180 822N 140 315A 140 315A 1...

Страница 26: ...5X7 6 FUSE SLOW BLOW 4000MA 125 V 2 5X7 6 REMOTE CONTROLLER RECEIVER TSOP2238NN JACK RCA PJ6056A 6P STEREO JACK RCA PJ6056F AV 4P MONO JACK RCA PPJ126A A V 11P SOCKET S 091A 21P JACK ASSY PJ6062 A V 3P E P WITH DOUBLE S W JACK ASSYPJ6062C 2P YL SW WH SOCKET CIRC CPT PCS030A 8PIN 14 360 THERMISTOR J503P84D140M290Q THERMISTOR J502P84D140M290Q TUNER TAEM G001D LG PAL FS TUNER TAEL G672D LG MULTI FS W...

Страница 27: ...529 D4 C530 C4 C531 C4 C532 B2 C534 C4 C535 C4 C536 C4 C538 C3 C540 C4 C541 C4 C542 C4 C543 C3 C544 C3 C545 C3 C546 C3 C548 D4 C549 C4 C551 D4 C552 D4 C553 D3 C561 C4 C573 E5 C574 E5 C593 C3 C594 C4 C595 C1 C601 B3 C602 B2 C603 B2 C604 B3 C605 B2 C606 A2 C607 B3 C611 B3 C612 B3 C621 A2 C622 A3 C623 A3 C624 B2 C625 A2 C626 A2 C631 D1 C632 D2 C633 D1 C634 C1 C635 D1 C636 C1 C637 C1 C638 C1 C639 C2 C...

Страница 28: ...SVC SHEET 3854V A0083A S SVC SHE ...

Страница 29: ...X VW Gservice com techsup html ...

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