LG 21FJ4AB/RB Service Manual Download Page 2 | Manualshive

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SERVICE MANUAL

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Pagination sheet

P/NO . MFL31479115
Total pages : 28 pages

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Inside

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3854VA0196B-S1

3854VA0196B-S1
2005.8.16

P/N : 3854VA0196B-S1

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Summary of Contents for 21FJ4AB/RB

Page 1: ...tion Changes 3 REV NO MM DD YY SIGNATURE CHANGE NO CHANGE CONTENTS 1 4 5 6 8 7 SUFFIX KIM S H 06 12 22 21FJ4AB TH LG MFL31479115 9 10 Product Name SVC Manual KDRLCEY 2 3 NOTE This part contain Eco hazardous substances Pb Cd Hg Cr6 PBB PBDE etc within LG standard level Details should be followed Eco SCM management standard LG 56 A 2524 Especially Part should be followed and controlled the following...

Page 2: ...7 33 2 2 40 67 40 Punching spec Schematic diagram 9 unit mm Pagination sheet P NO MFL31479115 Total pages 28 pages Front Cover EN EN 2 EN 3 EN 4 EN 26 27 Back Cover EN MAIN Front Cover Inside Back Cover Inside 3854VA0196B S1 3854VA0196B S1 2005 8 16 P N 3854VA0196B S1 ...

Page 3: ...COLOR TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 059B MODEL 21FJ4AB RB MODEL 21FJ4AB RB TH website http biz LGservice com ...

Page 4: ...TENTS 2 SAFETY PRECAUTIONS 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 6 ADJUSTMENT 8 PRINTED CIRCUIT BOARD 13 TROUBLE SHOOTING 14 BLOCK DIAGRAM 18 EXPLODED VIEW 20 EXPLODED VIEW PARTS LIST 21 REPLACEMENT PARTS LIST 22 ...

Page 5: ...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 6: ...on 4 EYE option switches the eye function on or off 5 D D E E Programme Up Down selects 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 7 PSM Picture Status Memory recalls your preferred...

Page 7: ...he programme table 14 SLEEP sets the sleep timer 15 SSM Sound Status Memory option recalls your preferred sound setting 16 SURROUND º º option selects surround sound No function COLOURED BUTTONS These buttons are used for teletext only TELETEXT models or programme edit POWER MUTE 1 2 3 4 5 6 7 8 9 MENU INDEX TV AV 0 EYE Q VIEW LIST I II PR PR OK VOL VOL PSM SSM SLEEP PICTURE SOUND TURBO FAVOURITE ...

Page 8: ...eceiver must be operated for about 20 minutes prior to the adjustment V Test Method 1 Performance LGE TV test method followed 2 Demanded other specification CCC Safety IEC60065 6 A General specification SPECIFICATIONS Note Specification and others are subject to change without notice for improvement Item Receiving System Available Channel Input Voltage Market Screen Size Aspect Ratio Display Metho...

Page 9: ...Monitor out 1 Front Power Vol F G PR E D MENU OK Turbo Picture Sound LG Code NEC System Storage Normal Turbo Storage System Channel Fine Search Name Copy Move Delete Skip 8 Channel Dynamic Standard Mild Game User Contrast Brightness Color Sharpness Tint NTSC M Only Flat Music Movie Speech User 0 100 100 400 1K 4K 10K Off On Pr 1 VOL 30 Off On On Off English Russia English Indonesia Thai Vietnam TV...

Page 10: ...s the ADJ key on LINE SVC remote control changes to screen adjustment mode 3 Adjust the Screen Vol of FBT to appear Horizontal Line and adjust the Screen Vol of FBT at disappear point Horizontal Line Press the Enter A key to exit SVC mode 5 Purity and Convergence Adjustment 5 1 Purity Adjustment 1 Adjustment Preparation 1 Receive Red Raster Pattern for purity adjustment 2 Demagnetize the CPT and C...

Page 11: ...and BRIGHTNESS b Adjust X data of High light with R DRIVE VP7 and Y data with B DRIVE VP9 to have the color temperature as shown below c Make the picture luminance 4 5Ft L by changing the CONTRAST and BRIGHTNESS d Adjust X data of low light with R BIAS VP4 and Y data with B BIAS VP6 to have the color temperature as shown below e Repeat steps a d until both low and high light have same readings as ...

Page 12: ... TABLE 3 OPTION 1 DVD TURBO ME V CURVE V MUTE EYE FLAT SND MUTE GAME OPTION2 TURBO ARC 200PR BLUEBACK TURBO AT HOTEL SHARP DVDN OPTION3 FM TRANS FM HIGH NTSC AV PSEU SYNC KI A2 SW LNA SWOOFER OPTION 4 SYSTEM SND MODE AV LOC KEY COLOR T PLL DIV MTS LEV OPTION 5 FM PRE NICAM PRE SCART PRE A2 FM TH FIRST TH ZWT TH INITIAL 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 1 0 0 1 1 1 0 0 0 4 1 2 1 1 31 22 6 13 0 5 15 2 R...

Page 13: ...at Bright ABL Threshold RGB Temp SW Coring Gain Select Pre shoot Adjustment Over shoot Adjustment Y Gamma start point Select DC Restoration Select Black Stretch Start Point Select Black Stretch Gain Select C Bypass C Kill On C Kill Off Color Killer Operational Point R B Gain Balance R B Angle B Y DC Level R Y DC Level Video Level OVER MOD SW OVER MOD LEVEL Tint Through Range 0 63 0 31 0 15 0 127 0...

Page 14: ...nput Auto Flesh WPL operating Point VM Gain Sensitivity of sync separation G Y Amplitude Color on off on Half tone Mode Overmodulation circuit Type APC Offset current IF video level offset 5 74MHz FM Det IF VCO freerun frequency Equalizer Bell filter Equalizer circuit Bell filter adjust SECAM Killer circuit disable SECAM Killer circuit enable OSD Contrast OSD Position Range 0 3 0 3 0 3 0 3 0 3 0 3...

Page 15: ... 13 PRINTED CIRCUIT BOARD MAIN ...

Page 16: ... 14 Maneuver defectiveness Maneuver defectiveness In case of influx NOISE R C is not operate Maneuver defectiveness 1 TV FUNCTIONAL 2 TU IF SECTION 3 VIDEO PROCESSING TROUBLE SHOOTING ...

Page 17: ... 15 4 SMPS PRIMARY SECTION 5 SMPS SECONDARY SECTION ...

Page 18: ... 16 6 VERTICAL SECTION 7 HORIZONTAL SECTION ...

Page 19: ...8 SOUND PROCESSING SECTION 17 9 CPT DRIVE SECTION ...

Page 20: ... 18 BLOCK DIAGRAM HIC291 ...

Page 21: ... 19 MEMO ...

Page 22: ... 20 EXPLODED VIEW 300 330 320 310 120 504 520 112 150 170 913 153 Option 400 943 174 ...

Page 23: ...sembly 21FJ4RB TH MC059B 21 C A 1 TONE SET SY FOUANI 310 5020900052B Button MOLD ABS 380 CONTROL HF 380 6KEY LGERS LOCAL 117A DDM MBG36436501 Button Control MOLD ABS 380 6 KEY HP 380 21FJ4AB TH CONTROL LGESY 320 320 062H Spring CUTTING STSC304 COIL STSC304 330 5020900051B Button MOLD ABS 380 POWER 21FJ4RB LD ABS HF 380 1KEY LGERS 117A MBG36436401 Button Power MOLD ABS 380 21FJ4AB TH HF 380 POWER 1...

Page 24: ...M 1000uF 20 25V 1 3 RH UP050 B102K B B 1nF 10 50V Y5P SMS5 0TP10VB100M 100uF 20 10V 157MA LOCA NO PART NO DESCRIPTION IC02 IC301 IC501 IC601 IC801 IC802 IC803 IC804 Q840 Q10 Q101 Q102 Q111 Q16 Q241 Q301 Q401 Q402 Q403 Q501 Q801 Q813 Q901 Q902 Q903 D111 D301 D302 D303 D403 D405 D501 D502 D505 D601 D801 D802 D803 D813 D815 D826 D834 D902 0IAL241610B 0IPRPSA006B 0ICTMSA007B 0IPMGSA024A 0IPMGSK016A 0I...

Page 25: ...B471K B B 470pF 10 50V Y5P LOCA NO PART NO DESCRIPTION C582 C602 C603 C604 C606 C608 C611 C612 C802 C803 C804 C805 C809 C810 C811 C813 C814 C815 C817 C818 C818 C819 C821 C826 C828 C831 C833 C835 C839 C843 C847 C850 C853 C901 C902 C904 C907 C908 R226 R511 R552 R904 C115 J101 L102 L221 L225 L401 L402 L501 0CN3320F569 0CE336DF618 0CE475DK618 0CQ5621N519 181 007C 0CE106DF618 0CE476DH618 181 007C 0CQZV...

Page 26: ...04 R406 R407 R408 R409 R41 R410 R413 R414 R416 R42 R421 R423 R424 R43 R430 R502 R504 R505 R506 R507 R508 R509 R510 R512 R513 R514 R515 R516 R519 R521 R522 R523 0RD5100F609 0RD0752F609 0RN1502F409 0RD6200A609 0RD0201A609 0RD0201A609 0RN1202F609 0RD8202F609 0RD6801F609 0RD4302F609 0RD6801F609 0RN6801F409 0RD0101A609 0RD3002F609 0RD1502F609 0RN4702F409 0RS2700H609 0RD0472A609 0RD2001A609 0RD1500F609 ...

Page 27: ... 96T1J2K70 2 7KOHM 5 1 6W 3 2X1 8 RD 96T1J47R0 47OHM 5 1 6W 3 2X1 8MM RD 96T1J1K00 1KOHM 5 1 6W 3 2X1 8MM RN 96T1F22K0 22KOHM 1 1 6W 3 2X1 8M RD 96T1J39K0 39KOHM 5 1 6W 3 2X1 8M RN 96T1F4K70 4 7KOHM 1 1 6W 3 2X1 8 RD 96T1J1K00 1KOHM 5 1 6W 3 2X1 8MM LOCA NO PART NO DESCRIPTION R883 R884 R902 R905 R905 R906 R908 R912 R915 R915 R916 R917 R918 R919 R920 R921 R922 R923 SW11 SW12 SW13 SW14 SW15 SW16 SW...

Page 28: ...P NO 3854VA0196B S1 2005 8 16 ...

Page 29: ...SVC SHEET 3854VA0196B S ...

Page 30: ...Dec 2006 Printed in Korea P NO MFL31479115 ...

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