Lg 21sa1rl Rg Rlx-l4 Chassis Cw81b

March 24, 2018 | Author: Bastian Brito | Category: Amplifier, Cathode Ray Tube, Electrical Connector, Vacuum Tube, Electrical Wiring
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Internal Use OnlyNorth/ Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com COLOR TV SERVICE MANUAL CHASSIS : CW81B MODEL : 21SA1RL/RG/RLX MODEL : 21SA1RL/RG/RLX-L4 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL42466416 Aug., 2009 Printed in China ............... Plastic ABBREVIATIONS: Used in this book ADJ ................................................................ Automatic Gain Control AMP ..........12 EXPLODED VIEW .........................................................................................................................F.................. -2- LGE Internal Use Only ..................................................... 14¡ ›125 CATV(125) ..........................................................................................................................................................................Inc.Automatic Picture Control BM ....................................................................................I...........3 ADJUSTMENT INSTRUCTIONS .......................................................................................................................... Second Audio Program BPF ................................................................................ : A51QGV991X001(D) SOUND OUTPUT ........................................................................................................................................................................................................................................................................................................................................................... Stereo LPF .VHF/UHF 75 ohm Balanced CHANNEL RANGE VHF .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Oscillator SEP.B+ Tuning Copyright©2009 LG Electronics............................................................. 2-13 UHF .................................................I................. High Voltage OSC............................................................CONTENTS SAFETY PRECAUTIONS ............................................................................................4 TROUBLE SHOOTING................... Only for training and service purposes. Phase Locked Loop APC ...........................................................................................................................................................................................................................................................................................................................................................25 MHz Color Sub-carrier frequency ............................................................... PRINTED CIRCUIT BOARD.......................................................................................................................................................................................................V ...F .................................................Automatic Frequency Control AGC....... Detector FBT........................................................................................................................................................................Cathode Ray Tube DEF ............................ 42................... IC-Solid state chassis PICTURE TUBE .............................................................................................Video Intermediate Frequency H .................. 7W or 10W CABINET ........................................................................................................................................................ Flyback Transformer H..............................................45............01.............................................................Vertical IC ...........Intergrated Circuit OSD .......................................................................................................................................................................................................................................... Type No...............................................On-Screen Display SAP .............................................................44 MHz CHASSIS CONSTRUCTION ................................................................................................. Deflection DET..................................................................................B+ Main BT ...................................................................................Low Pass Filter DP .................................................41........................ 14-69 ›13............ Synchronization S..............................Amplifier CRT ..........................................................................................85W ANTENNA INPUT IMPEDANCE ............................................................................................................................16 SCHEMATIC DIAGRAM ................................................................................................... 02¡ INTERMEDIATE FREQUENCIES Picture I-F carrier frequency................................................................................................................................... BLOCK DIAGRAM....... AC100-240V~50/60Hz POWER CONSUMPTION ................................Differential Group PLL .................................................................................Band Pass Filter ST ............................................... Differential Phase DG ..17 MHz Center frequency ......................................................................................................................................................................... SPECIFICATIONS POWER INPUT ...................................Adjustment or Adjust AFC ..................................................................................................................................................................................................................................................................................... All right reserved................ Separator SYNC .......................... Sound Intermediate Frequency V.............................................................75MHz Sound I-F carrier frequency ................Horizontal V ......................................................... b. With the instrument AC switch first in the on position and then in the off position. with an AC voltmeter measure between the chassis and a known earth ground. For continued implosion protection. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and. 6. and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components. parts. Components. 3.5mA) + - EARTH GROUND e. conduit. or high voltage. Also. Always inspect in all areas for pinched.Do not alter or add to the mechanical or electrical design of this TV receiver. near sharp edges. 7. they are serviced. These chassis can be safely serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source. b. Any design alterations or additions will void the manufacturer's warranty and will make you. horizontal deflection. if necessary. metal cabinet. plug the AC line cord directly into a 120 V AC outlet. circuit modifications and the addition of items such as auxiliary audio and/or video output connections. if applicable. take corrective action to remove any potential safety hazard. High voltage is maintained within specified limits by close-tolerance safety-related components/adjustments in the high-voltage circuit. the AC supply. Only for training and service purposes. All right reserved. Such openings include. the X-radiation protection circuit specifications given on instrument labels and in the Product Safety & Xradiation Warning note on the service data chassis schematic. Additionally. remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground. to the coaxial connector. near thermally hot parts. install. c. but are not limited to.Inc. or by on schematics and parts lists. control shafts. fire.) to all exposed metal parts of the instrument (antennas. do not try to remove such "permanently attached" yokes from the picture tube. or frayed wiring. high voltage.7). Design alterations and additions. b.0 V is obtained. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement parts might create shock. the replacement picture tube must be the same type as the original. High voltage must be measured each time servicing is done that involves B+. (2) When reinstalling the chassis and/or other assemblies in the cabinet. especially any exposed metal parts that offer an electrical return path to the chassis. Leakage Current Hot Check-With the instrument completely reassembled. If high voltage exceeds specified limits. (50. Check the AC power cord for damage. Product safety is under review continuously and new instructions are issued whenever appropriate. Picture Tube Implosion Protection Warning-The picture tube in this receiver employs integral implosion protection. Take extra care to assure correct lead dress in the following areas: a. To confirm that the AC power plug is inserted correctly. etc. Before returning an instrument to the customer. -3- LGE Internal Use Only . Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. AC Leakage Test DEVICE UNDER TEST TEST ALL EXPOSED MET AL SURFACES 2-WIRE CORD ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED) LEAKAGE CURRENT TESTER (READING SHOULD NOT BE ABOVE 0. handle bracket. PRODUCT SAFETY NOTICE Some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410. and isolation resistor/capacitor networks. Correct operation of the X-radiation protection circuits also must be reconfirmed each time Copyright©2009 LG Electronics. and between components and the printed circuit board. 4. but not limited to. d. always make a safety check of the entire instrument. because of potential hazard. Repeat this test with the instrument AC switch in the off position. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. etc. People not so equipped must be kept safely away while picture tubes are handled. Observe original lead dress.be sure that leads and components do not touch. they must be correctly in place. (1) Protective shields are provided on this chassis to protect both the technician and the customer. d. for both personnel and test equipment protection. c.0 megohm or greater than 5. or wiring that meet original specifications.") Read and apply the high voltage limits and. but not limited to.2 megohm. Parts that have special safety characteristics are identified by shading. Be sure that no built-in protective devices are defective and/or have been defeated during servicing. and e. 2. Antenna Cold Check-With the instrument AC plug removed from any AC source. Do not handle the picture tube by its neck. c. Some TV receiver chassis normally have 85 V AC (RMS) between chassis and earth ground regardless of the AC plug polarity. metallic overlays. X-Radiation and High Voltage Limits-Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers. on the receiver chassis. replace the picture tube only with one of the same type and number. including.). and/or other hazards. and (3) an improperly fitted and/or incorrectly secured cabinet back cover. but not limited to. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke. determine the cause of overheating and/or damage and. Place the instrument AC switch in the on position. (X-radiation protection circuits also may be called "horizontal disable" or "hold-down. If a voltage reading in excess of 1. screwheads. Design Alteration Warning. or on the picture tube. Read and comply with all caution and safety-related notes on or inside the receiver cabinet. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. (1) spacing between the picture tube and the cabinet back. Keep the picture tube away from your body.5 milliamp. This secondary ground system is isolated from the AC power line. The two ground systems are electrically separated by insulating material that must not be defeated or altered. by a ¡ . If the measured resistance is less than 1. nonmetallic control knobs. 8. measure from a known earth ground (metal waterpipe. or otherwise handle the picture tube in any manner without first putting on shatterproof goggles equipped with side shields. 5. adjustment and compartment covers/shields. Do not change spacing between components. it is specially constructed to prohibit X-radiation emissions. including. Reverse the instrument power cord plug in the outlet and repeat the test.SAFETY PRECAUTIONS 1. Correctly replace all missing protective shields. (Do not use an isolation transformer during this test. if the chassis is so equipped. Any current measured must not exceed 0. etc. an abnormality exists that must be corrected before the instrument is returned to the customer. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER. Do not remove. wattage. be sure to put back in place all protective devices. including. including any removed for servicing convenience. because the picture tube shields and mounting hardware perform an X-radiation protection function. the following items: a.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.antenna wiring. might alter the safety characteristics of this receiver and create a hazard to the user. parts. (2) excessively wide cabinet ventilation slots. insulating fishpapers. Hot Chassis Warning-a. nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage. For continued Xradiation protection. connect an electrical jumper across the two AC plug prongs. the servicer responsible for personal injury or property damage resulting therefrom. check each component specified on the chassis schematic and take corrective action. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. out-of-place. 15 ± 0.05V 2. NTSC: LG standard signal means the digital pattern 13CH (480NC) 7) If not specified. Convergency Adjustment (1) Necessary Instrument 1) Degaussing Coil 2) Convergency fixing instrument (Speical tools) Maker LGIT LGIT SANYO LGIT LGIT LGIT LGIT LGIT LGIT AGC Vol 2. it is not necessary to use an isolation transformer. APC ON is APC CLEAR (DYNAMIC) 5. 2) If the horizontal Line is inline with CPT Mark. 60Hz Taiwan market: 110V±10%. (The specified torque for fixing DY screw should be 10Kg/cm. 2) Demagnetize the CPT and Cabinet with a degaussing coil. 3.4 ± 0.3 ± 0. it must be done in following conditions. -4- LGE Internal Use Only . However. 3) Received the Cross Hatch Pattern of Convergence. 2) Using degaussing coil. 2) Press the VOL+/. Copyright©2009 LG Electronics. Purity and Convergence Adjustment 5-1. Notes 1) Because this is a cold chassis. Tuner P/N 6700NFNS11E 6700VS0002F 6700PF0006B 6870NB0026A 6700MF0014A 6700MF0018A 6700MF0018B 6700MF0018D 6700MF0018E 6) Pull the DY slowly backward and fix it when the whole screen becomes red. Purity adjustment (1) Adjustment Preparation 1) Receive Red Raster Pattern for purity adjustment (51CH).05V 2. for better productivity. 3) Turn the screen volume on the FBT clockwise until the horizontal line is visible and turn it counterclockwise until horizontal line faintly visible.05V 3. direct 2-pole magnet handle toward 6-12 o’clock direction and adjust the Horizontal Line to fall onto the mark opening the magnet at an angle. 2) All adjustment must be done in the correct sequence. TAEA-H111F TAEW-G002D 115-B-A86EL TAEA-J001F TAEW-G013D TAEA-G011D TAEA-G001D TAEA-G011D TAEA-G111D Remark Korea PAL PAL HITACHI PAL SECAM(CIS) PAL PAL SECAM(CIS) (2) Adjustment Preparation 1) Operate the unit at least 15 minutes before adjustment. However. 2) Press the “ADJ’ key of factory remote control once to make the TV set display horizontal line.05V 2.) 2.4 ± 0.15 ± 0. AGC Voltage Adjustment 3-1. you need to check the signal strength frequently in order to prevent error. Only for training and service purposes.5 ± 0. 50/60Hz 5) If not specified. (2) Adjustment 1) Pre-adjust the static convergence (STC) with the 4 and 6pole magnet.05V 2. 3) CAUTION: Since the signal strength can be easily changed by the condition of signal cable.Max Input Current : Over 1A/ Max Input Voltage : 500Vdc . All right reserved. 4. Marking). Adjustment 1) Press the “INSTART” key of factory remote control and select “VP0 (RF AGC)” adjustment mode. 480NC). 2) Connect the multi-meter to J105 (AGC Check.03% 3-2. Adjustment (Using Factory Remote Control) 1) Input in the 75Ω cable LG standard signal (Digital Pattern. Necessary Instrument .05V 2.5 ± 0. 60Hz Japan market: 100V±10%. (09ch) 4) Let the Contrast in normal luminance level. 6) Signal : Received the standard color signal (65dB±1dBuV).3 ± 0.05V 2. 4) Push the DY(deflection yoke) all the way to the CPT funnel. it can be change in a prepermitted range. the receiver must be operated for more than 20 minutes prior to the adjustment.05V Signal 65dBu 65dBu 65dBu 65dBu 65dBu 65dBu 65dBu 65dBu 65dBu Tuner Spec. 5) Turn the purity magnet(2-pole magnet) so that the “green” color portion of left side and the “blue” color portion on the right side have equal amount of color.) G R B R 5-2. 2-Pole magnet should direct 3-9 o’clock direction.Measurement Range : 10mV-100mVdc/ Accuracy : 0. G R B G R B 3-3. Scope of Application These instructions are applied to CW81B Chassis.(F/ G) key until the multi-meter shows reading as shown below. (3) Static Convergence (STC) Adjustment 1) Receive the Cross Hatch Pattern Convergence (09ch).ADJUSTMENT INSTRUCTIONS 1. 3) If not.Inc.0 ± 0. Temperature : 25 ± 5°C Humidity: 60% ± 10% 4) Power supply of SET for NTSC Korea market: 220V±10%. Screen Voltage Adjustment 4-1.Digital Multi-meter: 1 set . remove the stains on CPT & Cabinet. 3) Environment conditions : If not specified. Adjustment Preparation 1) Input in the 75Ω cable 65dB(±1dB) LG standard signal. (Exit screen voltage adjustment by press “Enter(A)” key of factory remote control. operating it using a transformer between the power supply line and chassis input to prevent electric shock and to protect the test instrument.05V 2. 5Ft-L by changing the “CONTRAST” and “BRIGHTNESS”. B horizontal line in unity(same line) by turning the 2 tabs of the 6-pole magnet. adjust the focus first seeing to it that the WHITE color picture quality is sharp enough. Adjust X data of High light with R-DRIVE and Y data of high light with B-DRIVE to have the color temperature as shown below. -5- LGE Internal Use Only . d. * In case there is excess RED color at screen voltage adjustment. 4) Use the VOLF. Market ALL Color Temperature 13. 8-1. 4) Converge the RED horizontal and BLUE horizontal line in unity(same line) by turning the 2 tabs of the 4-pole magnet. 7-1. 2) Change the Sub-Brightness data by pressing the VOLF. do not change the angle between the 2 tabs. Make the picture luminance 45Ft-L by changing the “CONTRAST” and “BRIGHTNESS”. Necessary Instrument 1) Automatic White Balance Meter (Low/High light Pattern generator) 2) CRTColor Analyzer. Automatic adjustment 1) Adjust using Auto White Balance Meter. b. 5) Converge the R. <Fig. G. the Screen Voltage adjustment should be finished. VOLG Key to change item data. (14CH) 2)Set the picture condition on " APC ON" (CLEAR) mode. 2) X-axis Adjustment: Adjust convergence of X-axis (horizontal) by moving the deflection yoke (DY) up and down. 3) Converge the RED vertical and BLUE vertical line in unity (same line) by changing the angle between the 2 tabs of 4-pole magnet. Adjustment Preparation Receive LG standard pattern (NTSC: Crosshatch pattern.09) and set the picture condition on “APC ON”(CLEAR) mode. CA -100: 1 set 3) Factory Remote Control (b) 6-2.000 X-AXIS 268±5 Y-AXIS 273±5 7. At this time.09 (Crosshatch pattern) refer to <Fig. e. light with B-BIAS to have the color temperature as shown below. adjust it using “volume .2) Before adjusting Static Convergence (STC). 1> In ultra NTSC model. (4) Dynamic Convergence (DYC) Adjustment 1) Y-axis Adjustment: Adjust convergence of Y-axis (vertical) by moving the deflection yoke (DY) left and right. VOLG key so that the number 1 in gray scale of mono scope pattern almost disappear . See <Fig. Adjustment Turn the focus volume on the FBT upper direction to have the best focus vertical line (Fig. Ch. 1(a)) and horizontal line (Fig. At this time. Only for training and service purposes. 2) Enter CPU OFF Mode by pressing “IN-START” & “MUTE” key of factor remote control in turn before adjustment. 3> Copyright©2009 LG Electronics. Make the picture luminance 4. 8-2. 2) Enter white balance adjustment mode by pressing “INSTART” key of factory remote control. All right reserved. <Fig. In the ultraslim . c. 1(b)) as shown below (a) 6. Repeat steps a~d until both low and high light have the same readings as shown below. do until the number "1" completely disappear. do in the signal of Ch. 5) Adjustment Procedure a. 2> 6-4. Focus Voltage Adjustment This adjustment must be done after operating the TV set receiver sufficiently. White Balance Adjustment 6-1.(F) key of factory remote control until the RED color disappear. Adjustment 1) Press the “ADJ” key of the factory remote control twice to enter to “SUB-BRIGHTNESS” adjustment mode. 7-2. do not change the angle between the 2 tabs. Adjustment Preparation Prior to this adjustment. CHE Key to choose adjustment item. 6) Converge the R. Adjustment Preparation 1) Receive LG standard Mono scope pattern. B vertical line in unity (same line) by changing the angle between the 2 tabs of the 6-pole magnet. Manual adjustment 1) Adjust using white Balance meter and factory remote control. 2> 6-3. G.Inc. Exit CPU OFF mode by press the “MUTE” key of factory remote control after adjustment finished. 3) Use the CHD. Adjust X data of low light with R-BIAS and Y data of low 8. SUB-BRIGHTNESS Adjustment This adjustment must be done after White balance adjustment. (or the remotest grid of CPT) 7) Trapezoidal Adjustment Select SVC02(EW TRAPE) and adjust so that the width of the upper part of screen is alike with the one of the lower part of the screen. 2) Vertical Position Adjustment Select SVC02(V-POS) and adjust so that the horizontal center line coincide with geometric horizontal center of the CPT. Sub-Tint adjustment This adjustment has to be done only if the picture has bad tint otherwise. 3) Press the “ADJ” key of the factory remote control three times to enter to “SUB-TINT” adjustment mode. Adjustment 1) Horizontal Position Adjustment Select SVC02(H-POS) and adjust so that the left and right vertical line are symmetrical as possible. -6- LGE Internal Use Only . For manual adjustment. 4) Press the VOLF. Adjustment (21'' Superslim. 2) Press “IN-START” key on factory remote control continuously to enter to Deflection Adjustment mode. 9) BOW Adjustment Select SVC02(HP BOW) and adjust so that the vertical line in the four corners become straight line. 1) Receive LG standard pattern signal (SMPTE. it can be omitted if the picture has good tint. B DRIVE F 6 0 0 1 8F B BIAS C 7 0 0 1 8C B AMP B CUT G AMP G CUT 3 3 3 3 9-3.Inc. 3) Press the CHD.0 column) 6) Parabora Adjustment Select SVC02(EW PARAB) and adjust so that the vertical line of the remotest grid at the left or right side of the screen will be parallel to the vertical line of the center of screen. Deflection setting data adjustment These adjustment will be done by automatic adjustment Equipment. the left and right and the remotest grid will correspond to the effective boundary surface. (The remotest grid PAL: within 0~25%.5~3. Only for training and service purposes. Adjustment Preparation 1) Deflection setting data adjustment can be done only with remote control. E key to select adjustment item. 2) Vertical linearity Adjustment Select SVC02(V-LIN) and adjust so that the size of the upper circle is alike with the one of the lower circle at LG standard pattern (PAL: EU05CH. 3) Vertical Size Adjustment Select SVC02(VA) and adjust so that the middle circle of the Digital Pattern(480NC. 4) Change the Sub-Tint data by pressing the VOLF. VOLG key until the upper and lower CYAN color becomes same color. NTSC: within 2. 11. it is also possible by the following procedure. 9. 5) Horizontal Size Adjustment Select SVC02(EW WIDTH) and adjust so that the outer line of Copyright©2009 LG Electronics. IIC BUS SUB Adjustment Data Table OSD SUB-BRIGHTNESS SUB-TINT Range 0 ~ 100 -20 (R) ~ +20 (G) PAL 40 R5 NTSC Secam 40 40 R1 R5 9-1. G key to change the data. EW LOCOR) and adjust so that the vertical line in the four corners become straight line. 13CH) coincide with the effective screen of CPT. 8) EW UPCOR / LOCOR Adjustment Select SVC02(EW UPCOR. 10. All right reserved. 4) Horizontal Position Adjustment Select SVC02(H-POS) and adjust so that the left and right vertival line are symmetrical as possible. 13CH) coincide with the effective screen of CPT.0 1 2 3 4 5 6 7 8 9 Gray Scale Color Bar <Fig. 2CH) 2) Set the picture condition on “APC ON” (CLEAR) mode. NTSC: 13CH) 3) Vertical Size Adjustment Select SVC02(VA) and adjust so that the middle circle of the Digital Pattern(480NC. Auto Adjustment Preparation Setting Table SLave ADD VCD R DRIVE Sub Add Start Bit Stop Bit Masking Direction EEPROM Sub Add SpeedPlus Step/Data D 6 0 0 1 8D R BIAS A 7 0 0 1 8A VIDEO IC BA TV EEPROM A0 Speed 1 Delay 5 PC 9-2. Ultra S/S Model) 1) Vertical Position Adjustment Select SVC02(V-POS) and adjust so that the horizontal center line coincide with geometric horizontal center of the CPT. 3> MONO SCOPE Patter Signal 8-3. 1: AV STEREO. 1: AV1.TINT:02CCH).12. 0: Without 1: With Sound Mute(no signal). EEPROM OPTION TABLE (ULTRA SLIM / NTSC) You can find the EEPROM Option Data if entering the IN-START key of the adjustable remote control and then pressing the MENU key. 1:Normal/Flat 1: With. 0: Without 1: With. 2: ARABIC 3: FARSI 0 SND MODE AV LOC KEY TXT LANG 0/1/2 0/1/2 0/1/2 0/1/2/3 2 1 1 3 <Table 1> Copyright©2009 LG Electronics. 0: SYNC KILL=0 (no signal) Opción 4 LANGUAGE CODE 0 1 2 0: ENG (ENG) Observación Inicial REMARK 1: ARAB (ENG/FRE/ARAB/URUD) 2: FARSI (ENG/FARSI) 0: MONO. See <Table 1> Opción 1 CPT XD MENU TURBO SND V-CURVE V-MUTE SND MUTE SUB ADJ AV MULTI CODE 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0: Slim/Ultra. 0: Without Observación Inicial 0 0 0 0 0 REMARK 1: With Blue Back. 1: 6 KEY.FIX(SUB:14CH. 0: Without 1: With Game Module . 0: Without 1: With.Inc.CH. 2: AV1 2 0: 4 KEY. 0: Without Observación Inicial 1 1 REMARK 1: SYNC KILL=1(no signal). 2: 8 KEY 0: EU WEST. 2: RF STEREO 0: NO AV. 0: Without Opción 2 DVD EYE GAME X-WAVE COLOR T CODE 0/1 0/1 0/1 0/1 0/1 1: With DVD input. 0: Without Observación Inicial 1 1 1 0 0 1 0 0 REMARK 1: Volume Curve high. Only for training and service purposes.0: Without(no signal) 1: SUB ADJ. 0: - Opción 3 AUTO DE SYNC KiI CODE 0/1 0/1 1: With NTSC system. 0: Without X-WAVE 1: Color+10 STEP. 1: EU EAST. 0: Without 1: With. All right reserved. -7- LGE Internal Use Only . 0: Volume Curve low 1: With Video Mute. All right reserved. V POS 0 ~ 255 0 ~ 127 0 ~ 127 0 ~ 127 0 ~ 15 0~7 0 ~ 60 0 ~ 15 EW PARAB 0 ~ 127 26 22 EW TRAPE 0 ~ 127 18 12 EW UPCOR 0 ~ 31 13 16 EW COR 0:normal mode 1:corner pin gain up mode 0 Copyright©2009 LG Electronics.Inc. Only for training and service purposes. OSD POS.<TABLE 2 > SVC Register RF AGC R BIAS G BIAS Range 0 ~ 63 0 ~ 255 0 ~ 255 Initial(NTSC) 28 100 90 127 100 100 85 100 7 5 38 4 5 4 3 V LIN 0 ~ 31 18 17 17 18 VA 0 ~ 127 38 53 12 18 H POS 0 ~ 31 24 28 24 20 SVC 02 EW WIDTH 0 ~ 127 58 100 Remark Necessary Necessary Others CPT IRICO CPT Unnecessary Necessary Necessary Unnecessary Necessary Unnecessary Unnecessary Unnecessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Unnecessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Ultra 2 LG CPT Ultra HF CPT FLAT HF CPT FLATIRICOCPT FLAT LG CPT Necessary Unnecessary SVC 01 B BIAS R DRIVE G DRIVE B DRIVE Y-DELAY OSD CONT. -8- LGE Internal Use Only . 1: Output by LPF 0: FBP/EXT RGB IN. 1: 107%. 1: MODE-A (-3dB). 1: Stereo INT) MONO Mode: 1 (0: MONO CH1.58MHz symmetrical. 1: MONO CH2. 1: 4. 2: Wide mode. 1: MONO CH4) 0: Surround OFF. 1: 3. 1: YC-C/DVD-Y/CR-IN/CB-IN SVC 02 SVC 03 Initial(NTSC) 18 16 16 7 18 7 7 24(55) 0(1) 4 4 0 1 1 0 0 0 0 1 33 0 0 0 33 0 1 18 0 1 63 7 1 0 1 0 1 0 2 0 0 0 3 1 0 Remark Necessary Ultra HF CPT Necessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary SVC 04 DC REST BS START BS GAIN C TRAP C BPF GAMMA GA GRAY MDE YCMIX TXT CC VIN/XRGB 1 5 0 0 0 0 0 1 Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Copyright©2009 LG Electronics. 1: Gray (15%) 0: YC_C. 1: MODE input mode 0 ~ 127 0: 0dB. 1: Boost 0 ~ 63 0: Pseudo Stereo OFF. 3: Low operating point 0: Low operating point.43MHz symmetrical 0: Chroma trap ON (composite video mode) 1: Chroma trap OFF (YCbCr mode and YC mode) 0: Coring OFF. 1: Boost 0 ~ 63 0 (min) ~ 7 (max) 0: Sound trap OFF mode (need external trap). 1: Black Stretch ON (Starting Point=501RE) 2: Black Stretch ON (Starting Point=601RE) 3: Black Stretch OFF 0 (min) ~ 2 (max) 0 (min) ~ 7 (max) 0 (min) ~ 3 (max) 0 (min) ~ 3 (max) 0: White (70%).43MHz Trap.74MHz mode need to set SIF system=1 0: 4.Inc. 1: 75us 0: 500mVrms@± 50KHz. 1: 5. All right reserved.5MHz. 1: -6dB 0: Cut. 1: Disable FM output 0: Filter OFF.2V_DC 0: Output without LPF. 1: 2. 0: MONO CH3. 2: High operating point. 1: CH converter measure mode at India 0: Enable FM output. 3: 4.286MHz Trap 0: 3. 1: Pseudo Stereo ON 0: Cut. 2:Middle operating point.SVC Register HP BOW HP ANGLE HS COMP V SC V COMP HS COMP V DC VBLK SW H BLK L H BLK R EW Cor DEEM TC FM GAIN A2 SW SIF SYS CH CONV FM MUTE VOL FIL VOLUME L AUDIO SW SURR CNT MONO VOLUME R TONE ATT T BOOST C TREBLE PSEUDO ST BBOOST C BASS GA S TRAP S TRAP SW F DDS DELAY T Y FILTER C FILTER Y APF COR GAIN P SHOOT O SHOOT WPL OPE GAMMA ST Range 0 ~ 31 0 ~ 31 0~7 0~7 0~7 0~7 0 ~ 63 0~3 0~7 0 ~7 0: Normal mode. 1: 5. Only for training and service purposes. 3: Defect 0: 100%. 2: 6.43MHz peaking. 3: 6. 1: Coring Gain 1(minimum).0MHz. PAL/SECAM: stop). 2: MODE-B (0dB). 1: Forced DDS mode (always work) Delay Test 0: 3. deviation (for PAL) 0: Normal mode.5MHz 0: Normal BPF mode. -9- LGE Internal Use Only .58MHz peaking.5MHz. 3: 129% 0: Black Stretch ON (Starting Point=401RE). 3: 4. 2: 4. 3:MODE-C(+3dB) 0: STEREO input mode. 2: Coring Gain 2(middle). 1: TV operating mode 0 ~ 127 MONO Mode: 0 (0: Stereo EXT. 1: Normal mode (sound trap ON) 0: Normal mode (NTSC: work.58MHz Trap. 3: Coring Gain 3(maximum) 0 (narrow) ~ 3 (wide) 0 (narrow) ~ 3 (wide) 0: WPL OFF. 1: High operating point. 1: Middle operating point. 2: 113%. 1: Corner pin gain up mode 0: 50us . 1: EHT 0: PAL/NTSC/4. ?h@@?5 ?h@@Y7J? ? ?h@@&W ?h@&W? ?h&W ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?ehY0@4V? ?h?Y ? ?hY.43 NTSC (AUTO). 1: ±150KHz (4. 1: Tint control set center value (cann't control tint) 0: Easy to become NTSC.OK6'? ?h5JW? ?h@? ?h@? ?h@?4V ?h1@@'I? ?hX))@ ?h?X ?ehX6@@ ?fh@@ Y7 ?eh@@@? ?M(J ? ?g?@@@ ?g?@@@@@@? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?h@@@@@@@? ? ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@ ?eh?@@@@? ? ?eh?@ ?eh?@O? ? ? ? ? ? ? ? ? ? ? ? ? Remark Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary SVC 06 SVC 07 Copyright©2009 LG Electronics. 1: Audio Mute ON 0: Video Mute OFF. 3: Crosshatch pattern 0: Blanking ON (normal mode).5v change) Initial(NTSC) 1 70 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 35 1 0 8 0 0 0 1 3 0 0 0 0 0 0 0 7 4 2 1 0 8 10 16 12 10 0 0 0 0 0 1 4 0 0 0 100 0 0 15 ? ? ? ? ?h@@ ?h@@ ? ?h@@ ?h@@ ?h@@@@@@@@ ?g@@@@ ?g@@@@@@?Y@@ ?h@@e@@@@ ?h@@e.75MHz 0~7 0: APC Voltage sample holde circuit type. 1: Enforce low gain mode (non-standard) 0: About 4us ~ 8us. 1: Easy to become PAL 0~7 0: Normal mode. killer circuit is not in operation 0 ~ 7 (-30dB ~ -40dB) 0 ~ 7 (Auto green off ~ level high) 0: Normal mode. 1: Digital OSD mode 0 ~ 15 0: -1VBE. . 1: about 8us ~ 12us 0: TV operating mode. SUB BIAS V TRANS DIG OSD RGB CONT RGB TEMP ACL DEF.5v change). 1: 38. ACL SW ABL DEF.0 MHz. 1: Enforce killer ON when color control is min 0: TV in operation.1: VXO Standby mode 0: Normal mode.SVC SVC 05 Register T DISABLE H FREQ AFC G A MUTE V MUTE SYN KILL V KILL VSEP V RES T HLVDET V SYN CD MODE FBPBLK AFC NST AFC2SW CROSS BW BLK DEF. 1: TV operating normally 0 ~ 63 0: Automatic mode. 3:±50KHz (4. 3: 45. 1: CbCr 0: Internal composite video signal. 1: Transmission between vertical retrace period 0: Analogue OSD mode. 1: Sensitivity up mode 0: Normal mode. 1: ACL Defect ON 0: High sentivity.WO? ?h@@?YY. 1: Bypass ON (used in Y/C mode) 0: Automatic mode (TV in operation). 1: Test mode.5v change). 1: VCO free run mode 0: FSC OUT. 1: Sensitivity up mode 0: If H-Lock is not defect. 1: Flat 0: ACL Defect OFF. 1: Defeat the vetical output 0: Normal mode. 1: Black pattern. 1: Low sentivity 0: ABL Defect OFF. 1: SAO mode at external audio input mode 0: ±200KHz (4.10 - LGE Internal Use Only . 2: 39.9MHz. 6: 4.5v change) 2: ±100KHz (4. Only for training and service purposes. 1: PAL-M/PAL-N/NTSC(AUTO) 2: PAL. 1: Enforce high gain mode 0: Audio Mute OFF. 1: APC detector stop type 0: Normal mode. 5: NTSC.5-0. 1: Over modulation measure circuit ON 0 ~ 15 0 ~ 255 0: Normal mode (de-empasis FM detector). 1: Minimize the gain of VIF amplifier 0: Internal Video out mode.5MHz. 1: Color OFF 0: Normal mode.5-0. 7: Not available 0 ~ 15 0 ~ 15 0 ~ 31 0 ~ 31 0 ~ 15 0: Color ON. 1: Selected External video output mode 0: 38..1: VXO free run mode 0: Normal mode. MID STP ABL TH VXO ADJ CrCb IN C EXT C BYPASS C KI ON C KI OFF C KI OPE GRN ADJ TINT TH ID KILL CVCO ADJ VCO CNTR FSC/STOP C SYS RY BY GA RY BY AN R-Y LEVEL B-Y LEVEL GY AMP HTNo CIr VXO Free VXO Stby IF AGC SVO SW VIF SYS V LEVEL OM TYPE OM SW OM LEVEL VCO FREQ AMONI SW AFT SENS VCO ADJ Range 0: Test mode. 4: PAL-N.Inc. stop vertical sync detection 1: V sync system always working 0~7 0~1 0: Normal mode. 2: White pattern. 1: Video Mute ON 0~1 0: TV operating mode.5-0. 1: ABL Defect ON 0: Enable limit operating. 3: PAL-M. 1: Disable limit operating 0~7 0: Video. 1: From pin 2 input 0: Bypass OFF. All right reserved. 1: Blanking OFF 0 ~ 127 0: Random transmission.43NTSC.5-0. Inc. 1: External. 100: Middle (normal). Only for training and service purposes. All right reserved. 1: Deinterlace mode Ext R Bias setting Ext G Bias setting Ext B Bias setting Ext R Drive setting Ext G Drive setting Ext B Drive setting DDS Band Pass Filter Secam IC Only Secam IC Only Secam IC Only Secam IC Only Secam IC Only Secam IC Only Text Only Text Only Initial(SECAM) 0 3 0 0 8 8 8 8 8 8 0 2 3 3 STE sens SAP LEVEL 0:NORMAL ~ 100:Min(Reduce DVD Volume) Only for hotel model PIP PIP PIP PIP PIP SECAM ONLY SECAM ONLY SECAM ONLY SECAM ONLY BTSC only 0:17% 1:24% BTSC only 0:38% 1:47% BTSC ONLY 0:-11dBV 1:-5. 111: High (pedestal side) 0: Normal mode.SVC SVC 08 SVC 09 Register VIDEO SW SYNC SS DinterLace OE TEST Ext RB Ext GB Ext BB Ext RDr Ext GDr Ext BDr MONI C2 DDS BPF BELL ADJ BELL MONI S KIL OPE S KIL ON S KIL OFF BellBypas Text Hpos Text VPos DE EM SW CIK STOP TEST MODE MONI cbcr IF TEST DVD VOL MAX VOL CLPDEL50 CLPDEL60 CLPLEN CLMPID PIP H S KIL ON S KIL OFF BellBypas Moni cbcr SAP sens Range 0: Internal. 3: YC-Y 000: Low (sync tip side). .5dBV 100 18 18 2 1 2 0 0 0 0 1 0 0 Remark Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Copyright©2009 LG Electronics.11 - LGE Internal Use Only . 2: DVD-Y. VIDEO PROCESSING 12511 12500 VIDEO/MICOM R/C RECEIVER PA01.R100) 11101 TUNER INPUT SECTION 5V(ZD102.R528) RGB 9V(C510.C526.Pr DVD-R DVD-L DVD L IN: L221.J108.4 12 41 9. TV FUNCTIONAL 11100 TUNER / IF 12500 VIDEO/MICOM 14400 HORZ.R20.C211.12 - LGE Internal Use Only .C30.R512.R108) TUNER Not Working TU SEARCH Problem TUNING Problem TUNER Not Working TU SEARCH Problem TU Weak Picture Signal No Video Signal No Sound Signal Sound S/N Problem Sound Noise TV system Detection Problem TV MODE Weak Picture Signal Video S/N Problem Video Noise· No 3.C523.C502.Pb.R154.L528.R82. C510 12509 KEY I/P Section SW11~SW16 R16.R515 NO PICTURE 12506 DEFLECTION SECTION • R404.C222 IN: L225.R109 .62 • C515.L503) SET Maneuver defectiveness KEY Not Working No Sound AUDIO/VIDEO No I/P.R226 IN: C210.C101.C506.R19.TROUBLE SHOOTING 1.R72.C512.C101.C517.R66 KEY Error 12500 61 ~ 64 31.R18.R150) 11102 CONTROL SECTION SDA(R514) SCL(R516) 11103 MOD.09. CONTROL SECTION AGC(C110.35.C15 POWER SUPPLY SECTION POWER ST-5V(C521.36.C507 R622. SEARCH NO PICTURE NO SOUND.R151.C107.Q10 R501.Inc.C511.R58.R60.C108.43MHz) X501.C516.C212 IN: L221. 12510 LED O/P Section LD11. O/P SET Maneuver defectiveness Clock Error OSD Not Working MENU Picture Error Copyright©2009 LG Electronics. All right reserved.R515) SET Maneuver defectiveness MENU Picture Error SET LATCH-UP IF VCC(C528.ZD103. .R621 NO SOUND 12507 R/G/B DRIVE Section R505~R510. DEFL 13100 SOUND 15300 VERT.Z111 NO CH.C544 Deflection Problem Vertical/Horizontal Line 12505 12503 OSC SECTION (4.R17.C222 1~13 04. Only for training and service purposes.C215 IN: L222.C106) 30V(C103. TU / IF SECTION 11100 TUNER 11100 2 7 8 10 3 6 9 TUNER/IF (TU101) 11 4 5 1 11104 VIDEO/SOUND BUFFER IF(Z111. R537 12504 RESET SECTION R22.C511.C547) VCC(C518.R504.40 50~64 C510.C215 R IN: L222.32 35.C28. In case of influx NOISE R/C is not operate 12508 SOUND Section 11100 TUNER R154.R532.C513 1 CHIP IC (IC501) LV762XX 46~49 17~22 12502 REAR A/V AUDIO L/R VIDEO DVD-Y. DEFL 18200 SMPS Secondary 16100 CPT 18100 SMPS Primary 2. 63V / 380mA (105V~120V) 110V D826 (RU3AMV) R833 (RS 0. Game.R839 STR NO OPR.0V / 40mA KIA78R09API NT: 398mA PAL:503mA R620 (RS 5. Vcc) EEPROM (#8. R520 (RS 620) R513 (RS 300) R529 (RS 68) R132 (RS 68) 26V 28.4.R805 STR SWITCH ON PROB. Vcc) LV76213(#49.3V Vcc) IC 501 (Main IC Hor Vcc) IC 501 (Main IC RGB Vcc) 9V 9V 9V D301 (RGP15J)) C309 (470u/35V) 112.Vcc) D-Coil Relay T/X Pre-Amp MAIN IC (#24.47V / 18mA CPT Board D505 (RGP10J)) C540 (4. All right reserved.C852 SMPS SEC LOAD REG POOR INTERMITANT NO POWER 5.R808.R810.C840 STR NO OPR.R805. NOT OPR.5V Reg.Q840.0V / 15mA 5V /75mA./NO POWER INTERMITENT NO POWER SECONDARY O/P VOLTAGE POOR INTERMITANT ST-BY MODE 18205 LOAD REG. FB SECTION IC802.D847 TO DEGAUSS COIL 18106 START RESISTOR R804.17V / 395mA 110.Inc.Vcc) IC 501 (Main IC 3.47/2W) C831 (220u/160V) L802 (82uH) FR403 (RF 1.1V 110.0V / 13mA 8. 9V 3.Vcc) LA42102 (#7.Vcc) LA42102N (#7./NO POWER EXCESSIVE I/P VOLTAGE CAUSES NO POWER/ NO OSCILLATIONS 18108 IC801(STR-W6754) SECONDARY LOAD REGULATION POOR OVER VOLTAGE PROT.97V / 10mA (28V~32V) R107 (RS 12K/2W) Tuner 30V Copyright©2009 LG Electronics.Q845. 1.3V / 10mA 5.SW801 NO POWER FUSE OPEN NO RECTIFIER DC O/P NO POWER FUSE OPEN 18104 RELAY(DEGAUSS) RL801.0V / 231mA 5. USB OPT LV76213(#9.0V / 14mA 5.R853.R804. 60mA 3.3V 1.3V Vcc) LC75024E (1.Vcc) TUNER(Vcc) IC 501 (Main IC) IC 751 (S/W IC ) IC 661 (RF STEREO NT) IC 601 (SOUND-amp) IC 807 (NICAM) SMPS Trans FBT Trans 180V 184.St-by) LC75024E (3.5W) IC806 KIA78L05BP IC04 ST-5V ST_BY 1W Option KIA78R05API IC804 ST-5V IC803 5V_1 KIA7805API NT: 360mA PAL:465mA 5.#4 Vcc) LA72730 (#8 Vcc) LA72702N (#19 Vcc) LA42102 (#5.7u/250V) 3.5V Vcc) FM TX.13 - LGE Internal Use Only .6/2W) LV76213(#62.07V 109.3V Reg.2/2W) FBT B+ 29. SMPS PRIMARY SECTION 18200 18105 BRIDGE RECTIFIER 18103 FILTER SECTION 18102 FUSE & VARISTOR T802(150-F06T) NO POWER POWER RADIATION SAFETY PROBLEM DB801(TS4B05G) T803 NO POWER NO STR VCCSUPPLY SO NO POWER FUSE OPEN & STR DAMAGED DUE TO CHANGE IN PRIMARY INDUCTANCE OF SMPS VD801(TVR621D) F801(T4AL250V) 18101 AC INPUT P801A/B.8V 85mA 5V 145mA. NO POWER / INTERMITANT NO POWER SWITCHING NOISE 18111 STR FEED BACK SECTION D845. Only for training and service purposes. Vcc) LV76213(#20.R810.2V / 320mA LA78040N (#2. SMPS SECONDARY SECTION STRW6554 17V 20V-(10W) (S-Vcc) D824 (SFAF504G) C831 (330u/25V) (st-by 5V) 14V / 25mA 17V LA42101 (#7. . Vcc) IC 601 (SOUND-amp) 5W MONO IC 601 (SOUND-amp) 5W+5 W ST IC 601 (SOUND-amp) 10W+10W ST 11V D813 (RU3AMV) C826 (1000u/16V) D806 (TVR06J) C838 (2200u/25V) R873 (47/0. NO POWER NO MICOM CONTROL NO DEGAUSS PURITY PROBLEM 18110 STR VCC POWER SECTION D815. C314.C322 VCT VERTICAL O/P RETRACE KINE VERT SIZE PROBLEM VERT IC O/P CAN DECIDE GAIN 15305 VERTICAL O/P DAMPING & FILTER R310.R309. VERTICAL SECTION 15300 VERTICAL IC(IC301) LA78141 V-IN PUMP VVCC -UP GND OUT V-REF 15301 VERTICAL I/P R305.C414 C412 . PROTECTION ENABLE POWER OFF 7.14 - LGE Internal Use Only .Inc.L401.D505.6.L402.FR401 X-RAY WORKING SAFETY PROB ROLLING PICT 180V VOLTAGE FBT T402 FR501. All right reserved.R315.R311.C540 HORZ LINE NO RETRACE 26V VOL MAIN VCC(110V) FR301. 47V VCC Q401.C306 15304 PUMP UP VCC C307.R401.D301 ANODE FOCUS SCREEN Copyright©2009 LG Electronics. Only for training and service purposes.C310 VERTICAL FOLDING VERTICAL ROLLING NOISE (HORZ LINE MOVING UP/DOWN) O/STAGE V E R T D Y 15306 VETICAL REFERECE SECTION C313. .D301.T403. DEF COMPENSATION SECTION H O R Z D Y HORZ DRIVE SECTION R403.D302 RETRACE LINE POWER OFF 15308 OUTPUT STAGE VCC SECTION C307 VCT VERT. DEFLECTION PROB POWER OFF STRANGE NOISE 14404 HORZ. PROTECTION ENABLE CAUSES NO POWER 15303 VCC SECTION (24V) FR301.C404 DEFLECTI0N PROB POWER OFF INEARITY ADJ NOT WORK HORZ SIZE PROBLEM STRANGE NOISE COLLECTOR 14410 HEATER VOLTAGE . HORIZONTAL SECTION 14401 H-OUT 14402 HORZ O/P SECTION Q402.C305.C303.C322 VERT SIZE PROBLEM VERT LINEARITY PROBLEM POWER OFF(PROTECTION ENABLED) FBT SEC O/P VCC FULL RASTER VERT.C309. 1 CHIP IC : 1 CHIP IC processes the input IF. Sound Amp : Sound amps(LA42102L) is and Audio Amplifier it amplifies the output sound signal from Surround ic(LC75024E) and feeds to speaker which generates Sound.C904 and C902.Inc. L903. CPT DRIVE SECTION 16100 CPT Board Circuit 11700 16101 R G B AMP CIRCUIT L901 180V R917 L902 R The CPT-BOARD assembly is composed of discrete type RGB Amplifier. IF output from Tuner is then given to 1 CHIP IC. All right reserved. R912.8. D903 17006 Heater Voltage FR932 e-GUN Dead e-GUN LIFE DECREASE SPOT & TRAY Copyright©2009 LG Electronics. Amp.R923. High Frequency compensation is made by inductance of L901. CPT Dead CPT / e-GUN 16101 R. Demodulates Picture and sound information and gives analog R G B output for Display and SPKL/R as audio output.Gain is defined by Resistance of R917. capacitance of C907. SOUND PROCESSING SECTION ANT.Q902 and Q903 is defined by R908. . this sound output is further Amplified and feed to speakers. 9.B Signal-IN L902. 13603 R923 R921 C902 LA42102L(10W*2)) TUNER : RF signal is feed to TUNER through Antenna.G. DC level of emitter of Q901. Speaker 11100 TUNER 11500 1 CHIP IC (LV762XX) 12500 NICAM IC (LC75024E) 13602 Sound Amp. L904 ONE SIGNAL (R/G/B) MISSING 180V R G > > > R915 16002 B R916 C907 R905 Q902 R906 CPT CIRCUIT VCC / GND 1 Vcc 180V 5 GND 9V R921 C902 R908 D902 C904 R922 16005 Spot Killer CIRCUIT C901. Only for training and service purposes.15 - LGE Internal Use Only . R912 Q901 Q903 G L903 R915 R916 C907 Q902 B L904 R905 R906 9V R908 D902 C904 R922 11500 VIDEO PROCESSING SECTION L901 L902 Q901 L903 L904 16100 CPT DRIVE SECTION 16004 DISCHARGE PROTECTION CIRCUIT ONE SIGNAL R/G/B) MISSING NO PICTURE. R902. All right reserved.These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION. Do not modify the original design without permission of manufacturer.16 - LGE Internal Use Only . 943 400 170 112 913 174 150 510 (option) 120 300 590 520 311 530 310 540 330 Copyright©2009 LG Electronics. or other Hazards. Only for training and service purposes.Inc. .EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics.Shock. Fire. :3854VA0196D (08.04.DIAGRAMA ESQUEMÁTICO 2009 P/NO.14) . 6 11 1 4 7 SDA SCL R/L Out 9v From IC804 5v From 9v From 9v From 5V IC301 LIN-TV 9 21 19 20 IC803 IC804 IC804 IC04 10 17 18 IC701 BTSC 12 1 2 5 V_DY 49 46~48 LA72702 2 7 62 19 9 24 Ext R/L IN 50 51 EXT Video-in RGB 9V RGB OUT IF 5V H-Vcc 5V VDD 3. All right reserved.TABLERO DE CIRCUITO IMPRESO MAIN & CPT DIAGRAMA EN BLOQUE Option Par t IIC Bus Line AC ST-BY TRANS CPT DRIVE (1W Opt) AUDIO B+ (17V/11V) INPUT (100~240V) MONO MONO SOUND AMP SOUND AMP LA42101 LA42101 STEREO.5.Inc. LA42102(N) LA42102(N) RIN-TV SDA SCL 18 2 5 9 14 15 Monitor V OUT(ST) 23 24 R610 ST-5v From SOUND SOUND 5V 5V IC751 LA72730 IC751 LA72730 (STEREO Opt) (STEREO Opt) 3.5V B+ (110/115V) 14 SOUND AMP. Sound Max Sound Max IC04 9 L-OUT R-OUT SPK1. STEREO. LGE Internal Use Only . B ST-5V V-in Q402 MD1803 JA01 DVD DVD (FLAT OPT. SPK2. Only for training and service purposes.G.6 HIC291 01+ ' 8 7 Rear_AV(1) Rear_AV(1) ( PHONE) ( PHONE) SCART SCART Game Pack(Game Opt) Game Pack(Game Opt) CONTROL CPT(option) LED & IR POWER Copyright©2009 LG Electronics. SOUND AMP.) (FLAT OPT.) EW IN IC401 TDA8145 EW OUT L401 4. 9v From IC804 IC803 IC803 5V 5V R620 R620 7.1V 33V SDA SCL R.5V 7.5V ST-5V REG IC804 9V REG SMPS 12 TRANS MONO ( ~A43K ) STEREO ( ~ A43L) 10.3V Vcc 5V 17 6 V-OUT 22 SPK L/R OUT SIF IF IN 57 56 64 61 USOC 24V 185V AFC ABL IC661 A2/NICAM 5 LA76213 LA76213 Y(G)/Cr(R)/Cb(B) 8 33 10 11 13 H-OUT 2 10 8 SIF IN 54 out EW-OUT M_R/L OUT(ST) 16 FBT 1 V-OUT (Mono) LC75024E 27 26 31 32 FB AV ID 9 HEATER Collector B+ SDA SCL IC02 EEPROM 24C04/16 3 SDA SCL TV IN(ST) (Mono) From IC804 IF 5V SAW SAW AV1(V/R/L)-IN M L-OUT 9V Z102 TUNER From USOC Audio(Game) Video(Game) Vcc HDT FBP in 5.
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