LG 21FB7RB/RG Service Manual Download Page 2

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CONTENTS

CONTENTS ............................................................................................................. 2

SAFETY PRECAUTIONS....................................................................................3

DESCRIPTION OF CONTROLS.......................................................................4

SPECIFICATIONS ..................................................................................................7

ADJUSTMENT........................................................................................................9

PRINTED CIRCUIT BOARD .............................................................................14

BLOCK DIAGRAM ...............................................................................................17

EXPLODED VIEW................................................................................................22

EXPLODED VIEW PARTS LIST.....................................................................23

REPLACEMENT PARTS LIST ....................................................................... 24

Summary of Contents for 21FB7RB/RG

Page 1: ...E MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MC 059A MODEL 21FB7RB RG MODEL 21FB7RB RG TD website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...club2007 com www eclub2007 com 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 DESCRIPTION OF CONTROLS 4 SPECIFICATIONS 7 ADJUSTMENT 9 PRINTED CIRCUIT BOARD 14 BLOCK DIAGRAM 17 EXPLODED VIEW 22 EXPLODED VIEW PARTS LIST 23 REPLACEMENT PARTS LIST 24 ...

Page 3: ...he receiver to the customer always 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 t...

Page 4: ...a menu 4 EYE option switches the eye function on or off 5 D E Programme Up Down selects a programme or a menu item switches the set on from standby scans programmes automatically F 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 pic...

Page 5: ...on selects the sound output 13 LIST displays the 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 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 TV AV 0 EYE Q VIEW LIST I II PR PR OK VOL VOL PSM SSM SLEEP PI...

Page 6: ...amme 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 8 EYE option adjusts picture according to the sur rounding conditions 9 TV AV option selects TV or AV mode clears the menu from the screen s...

Page 7: ...art number in accordance with BOM 5 The receiver 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 K60065 7 A General specification SPECIFICATIONS Note Specification and others are subject to change without notice for improvement Item Receiving System Available Channel Input Voltage Market...

Page 8: ...f Special Language Input Child lock Etc Sleep Review Specification 2 AV 1 2 1 Monitor out 1 Front Power Vol F G PR E D MENU OK 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 Flat Music Movie Speech User 0 100 0 100 Off On Pr VOL 30 Off On On Off English Indonesia Tha...

Page 9: ... in order to prevent error 4 Screen Voltage Adjustment 4 1 Adjustment of Screen Manually Using ADJ Remote Control 1 Receive the PAL SECAM signal into RF mode regardless of channel 2 If you press 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 t...

Page 10: ...the INSTART key 3 Use the CHD CHE Key to choose adjustment item 4 Use the VOLF VOLG Key to change item data 5 Adjustment Procedure a Make the picture luminance 45Ft L by changing the CONTRAST 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 BRIGHTN...

Page 11: ...PTION 4 SYSTEM SND MODE AV LOC KEY COLOR T PLL DIV MTS LEV OPTION 5 FM PRE NICAM PRE SCART PRE SCART1 VO SCART2 VO 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 23 13 2 4 56 REMARK DVD function 1 Yes 0 No T P T S function in MENU Display or not VOLUME CURVE 1 HIGH 0 LOW VIDEO MUTE EYE function 1 Yes 0 No CPT SECTION SOUND MUTE at no signal yes or not GAME function 1 Yes 0...

Page 12: ... Control Bright ABL Defeat Bright Mid Stop Defeat 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 ...

Page 13: ...ill Vertical Kil SVO or fsc Output Gray Mode Cross B W Half Tone Blank Defeat C Ext CbCr IN Audio SW VOL FIL FM Mute IF AGC Defeat A MONI SW De emphasis TC FM Gain VOLUME S Trap Test C Trap Test Auto Flesh OSD Contrast OSD Contrast Range 0 1 0 3 0 3 0 3 0 3 0 3 0 3 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 3 0 3 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 127 0 7 0 7 0 1 0 3 Initial setting 0 1 0 0 0 0 0 1 ...

Page 14: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 14 PRINTED CIRCUIT BOARD MAIN ...

Page 15: ... FR825 E2 FR932 B1 HIC211 A4 HIC291 C4 IC02 C4 IC04 D1 IC301 E4 IC501 A4 IC601 A3 IC661 D2 IC662 D2 IC701 C3 IC751 D4 IC801 G2 IC802 F3 IC803 D2 IC804 E2 IC805 E3 IC806 E1 L3 E1 L102 A4 L211 C5 L212 C5 L213 C5 L216 C1 L217 C1 L218 C1 L221 D5 L222 D5 L223 D5 L224 D5 L225 C5 L230 B1 L231 B1 L232 B1 L233 B1 L280 D5 L281 D5 L401 G4 L402 F4 L501 A5 L502 C3 L503 C3 L662 C2 L802 E3 L804 E3 L901 A1 L902 B...

Page 16: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 16 CONTROL SIDE A V ...

Page 17: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 17 BLOCK DIAGRAM HIC291 ...

Page 18: ...www eclub2007 com www eclub2007 com www eclub2007 com 18 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 ...

Page 19: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 19 4 SMPS PRIMARY SECTION 5 SMPS SECONDARY SECTION ...

Page 20: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 20 6 VERTICAL SECTION 7 HORIZONTAL SECTION ...

Page 21: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 8 SOUND PROCESSING SECTION 21 9 CPT DRIVE SECTION ...

Page 22: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com 22 EXPLODED VIEW 300 P801 120 112 913 170 150 153 400 943 121 530 310 520 320 330 600 510 ...

Page 23: ...LGEIN EXPORT 117A 320 320 062H SPRING COIL 330 5020V00906B BUTTON POWER RT 21FB75V ABS HF 380 6KEY LGEIN LOCAL 400 3809V00431J BACK COVER ASSEMBLY 21FB7RG TD 1PHONE 8G068 3809V00431Q BACK COVER ASSEMBLY 21FB7RB TD 1PHONE MC059A MONO 510 6871VSN901D PWB PCB ASSEMBLY SUB M I MC059A LGEIN SVC CPT BOARD 15 17 20 21 520 6871VMM831A PWB PCB ASSEMBLY MAIN MC059A 21FB7RG M I LGEIN 6871VMM831D PWB PCB ASSE...

Page 24: ...N IC02 IC301 IC501 IC601 IC601 IC701 IC751 IC802 IC803 IC804 IC805 Q101 Q102 Q111 Q1301 Q16 Q241 Q301 Q401 Q402 Q403 Q801 Q813 Q901 Q901 Q902 Q902 Q903 Q903 D111 D301 D302 D303 D403 D405 D501 D502 D505 D601 D801 D802 D803 D813 0IMMR00010A 0IPRPSA006B 0ICTMSA003A 0IPMGSA024C 0IPMGSK016B 0IPRPSA017A 0IPRPSA018A 0IPRPKD003A 0IKE780500Q 0IMCRKE002B 0ISK110000A 0TR319709AB 0TR319809AA 0TR102009AB 0TR31...

Page 25: ...47UF D 100V 10 PE TP5 LOCA NO PART NO DESCRIPTION C534 C535 C536 C540 C541 C542 C543 C545 C602 C603 C604 C606 C608 C609 C610 C611 C612 C613 C614 C701 C702 C704 C705 C706 C707 C708 C709 C710 C711 C713 C714 C715 C716 C717 C719 C720 C721 C722 C723 C724 C725 C729 C730 C756 C757 C758 C760 C761 C763 C764 C765 C766 0CN1030F679 0CN1030F679 0CE105DK618 0CE475DR618 0CN1510K519 0CQ1831N509 0CQ2231N509 0CK223...

Page 26: ...1007 AWG26 5P 2 5MM 450MM H B UL1007AWG26 5P 2 5MM 400MM H B UL 1007 AWG 26 LOCA NO PART NO DESCRIPTION P1206A C221 C222 C232 C235 C674 FR301 FR401 FR403 FR501 FR825 J511 R101 R102 R103 R104 R105 R108 R109 R110 R1103 R111 R1116 R1117 R1118 R1119 R112 R1120 R113 R121 R1221 R1222 R1301 R1302 R1303 R1304 R132 R150 R152 R153 R154 R21 R22 R226 R23 R247 R249 R301 R302 R303 387 A06G 0RD2203F609 0RD2203F6...

Page 27: ... 6 W 5 00 TA52 33 OHM 1 6 W 5 00 TA52 LOCA NO PART NO DESCRIPTION R530 R531 R532 R534 R536 R537 R547 R550 R561 R565 R566 R601 R602 R603 R604 R605 R606 R608 R611 R618 R620 R65 R66 R69 R701 R702 R703 R704 R705 R706 R707 R708 R722 R760 R761 R803 R804 R805 R806 R807 R808 R809 R810 R812 R814 R831 R832 R835 R883 R884 R902 R902 0RD5100F609 0RD5100F609 0RD3901F609 0RD5100F609 0RD3000F609 0RD3300F609 0RD10...

Page 28: ...HM 1 2 W 7 0 5 00 TA52 1 5K OHM 1 2 W 7 0 5 00 TA52 1 5K OHM 1 2 W 7 0 5 00 TA52 100 OHM 1 6 W 5 TA52 100 OHM 1 6 W 5 TA52 430 OHM 1 6 W 5 00 TA52 430 OHM 1 6 W 5 00 TA52 18K OHM 2 W 5 00 TA62 18K OHM 2 W 5 00 TA62 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 ...

Page 29: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com P No 3854VA0196A 2005 05 26 ...

Page 30: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com SVC SHEET 3854V A0196A S ...

Page 31: ...www eclub2007 com www eclub2007 com www eclub2007 com www eclub2007 com Jun 2005 Printed in Korea P NO 3828VD0215J ...

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