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LC-20A2H
LC-20A2M

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Содержание LC-20A2H

Страница 1: ...KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 41 Ë KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 46 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 46 L KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 50 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 52 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 53 KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK...

Страница 2: ...l may create shock fire or other hazards WARNING 1 For continued safety no modification of any circuit should be attempted 2 Disconnect AC power before servicing BEFORE RETURNING THE RECEIVER Fire Shock Hazard Before returning the receiver to the user perform the following safety checks 1 Inspect all lead dress to make certain that leads are not pinched and check that hardware is not lodged betwee...

Страница 3: ...3 LC 20A2H LC 20A2M Specifications ...

Страница 4: ...4 LC 20A2H LC 20A2M Operation Manual Main unit front view Remote control Main unit rear view ...

Страница 5: ...5 LC 20A2H LC 20A2M Dimensions Unit mm ...

Страница 6: ...he 9 pieces of tape Disconnect the connection cables Note Some pieces of tape are located below the PWBs To access such tape detach the PWBs peel off the tape and disconnect the cables 8 Disconnect the connectors from the PWBs 2 Table Stand Table Stand Cover Cabinet B Cabinet A 5 4 1 Terminal Cover 6 7 6 8 6 9 6 6 6 5 6 4 6 3 6 2 6 1 3 3 Speaker Assembly Left Speaker Assembly Right SC1201 SC1202 P...

Страница 7: ...our lock screws from the MAIN PWB 10 Remove the four lock screws from the Y C SEPARATION PWB 11 Remove the three lock screws from the INVERTER PWB 12 Remove the lock screw from the TERMINAL PWB and the lock screw from the grounding terminal Detach the reinforcement plate too 13 Remove the two lock screws from the LCD display unit 14 Remove the three lock screws from the OPERATION PWB ...

Страница 8: ...o reflection sheets 17 Detach the top and bottom fluorescent lamps 18 Remove the photoconductive plate 19 Detach the top and bottom reflection sheets 20 Detach the ITO sheet 21 Detach the diffusion sheet and reflection deflection plate Fluorescent Lamp Top KLMP 0101CEZZ Lamp Reflector PSHEP0223CEZZ LCD Display Unit Fluorescent Lamp Bottom KLMP 0102CEZZ Lamp Reflector Bottom PSHEP0224CEZZ Diffusion...

Страница 9: ...ed Check the tuner and its peripheral parts No Is input at pin 1 of IC402 as specified Check the line in question Yes Check IC402 and its peripheral parts Yes No Are pins 2 and 4 of IC402 at H and L respectively Are pins 65 and 66 of IC2001 at H and L respectively No VIDEO 1 output Yes No Is input at pin 1 of IC402 as specified Check the line in question Yes No Are pins 2 and 4 of IC402 both at L ...

Страница 10: ...on cable Replace F3701 and F3702 Check S4701 and connection cable Check the secondary side load of T701 Fluorescent lamp Yes No Does F7751 function Yes No Is Pin 34 of IC1201 at H Yes No Are the oscillation waveforms at the primary side of T7751 6 as specified Yes Replace F7751 No Is input at pin 71 of IC802 as specified Check SC3301 SC line and peripheral parts Yes Check the line IC1201 and its p...

Страница 11: ...and its peripheral parts Check the line in question IC7305 and its peripheral parts Yes Check the speakers and their peripheral parts No sound from headphone Yes No Is pin 55 of IC2001 at L Check the headphone and its peripheral parts Check Q306 J4001 and their peripheral parts No sound from output line Yes No Is pin 52 of IC2001 at L No Are outputs at pins 1 and 7 of IC902 as specified Yes Check ...

Страница 12: ...annels are skipped up to the next receivable channel Adjustments All the items can be adjusted one by one with the MENU CH and VOL keys on the set and the remote controller The MENU key serves to toggle between adjustment items the next item is selected Let s suppose that the item at the bottom line is now selected Press the MENU key and the item at the top line on the next page will be selected T...

Страница 13: ...ent to get the Y reading in the range of BB thru CA 3 Then enter the above setting if made in the NTSC TAMP adjustment in the following items in the manual mode PAL TAMP SECAM TAMP PAL M TAMP and PAL N TAMP 0 1 2 3 4 5 6 7 8 9 10 11 12 13 0 1 2 2 C N P S P P T R G B G G 3 O T A E A A V C C C 3 1 4 M S L C L L U U U 5 C A H T T T 6 B T M M N O O O B B 7 I T A P F F F 3 4 8 A A M T T T E F F F 9 S M...

Страница 14: ...789012123456789012345678901234567890121234567890123456789012345678901212 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212 012 01 23 I I å I I Ë I 012345...

Страница 15: ...15 LC 20A2H LC 20A2M ...

Страница 16: ...16 LC 20A2H LC 20A2M ...

Страница 17: ...17 LC 20A2H LC 20A2M W ...

Страница 18: ...C1201 SC1202 P753 P701 P7305 P303 P754 P755 P2001 P7102 P7101 P7301 SC3401 SC3405 SC7001 SC401 P3701 P7751 P7753 P7755 P4004 P3206 端子电路板 8 8 8 7 8 8 8 7 7 7 7 7 端子电路板支架 左侧扬声器的 连接线 胶带 胶带 胶带 胶带 胶带 胶带 右侧扬声器的 连接线 主电路板 倒相电路板 Y C 分离电路板 操作电路板 NK OK Q PK Q I I QK NM RK _ R SK SJN SJV I _ V I I _I I _ TK S V I W I I UK ...

Страница 19: ...19 LC 20A2H LC 20A2M 液晶显示装置 主电路板 端子电路板组件 操作电路板 机壳A 倒相电路板 Y C分离电路板 14 13 9 11 10 12 12 13 加强板 VK Q NMK L Q NNK P NOK N I NPK NQK P ...

Страница 20: ...ZZ 灯座反射器 上部 PSHEP0223CEZZ 液晶显示装置 荧光灯 下部 KLMP 0102CEZZ 灯座反射器 下部 PSHEP0224CEZZ 扩散薄板 导光板 反射偏振光板 反射薄板 PSHEP0186CEZZ 15 15 16 17 21 19 17 19 18 20 反射薄板 PSHEP0187CEZZ 屏蔽板 ITO薄板 液晶显示装置 前面 15 15 NK RMB OK PK QK NRK Q P I NSK NTK NUK NVK OMK fql ONK ...

Страница 21: ... 检查IC802 AV1线路以及 周围电路 调谐器引脚 6 7 9 处的 电压是否正 常 是 是 是 是 否 否 否 是 是 是 检查电源电 路 调谐器引脚 19 处的输出 信号是否正 常 检查调谐器 以及周围电 路 IC402引脚 1 处的输入信号 是否正常 检查该线路 IC402的引脚 2 与 4 是否 分别处于高电 平与低电平状 态 IC2001的引脚 65 与 66 是否 分别处于高电 平与低电平状 态 检查IC402以 及周围电路 检查该线路 IC402引脚 1 处的输入信 号是否正常 检查该线路 IC402的引脚 1 与 4 是否 处于低电平状 态 IC2001的引 脚 65 与 66 是否处于低 电平状态 检查IC402以 及周围电路 检查该线路 IC802引脚 74 处的输入 信号是否正 常 检查J3403 AV2线路以 及周围电路 检查SC3301 SY线路 SC线 路以...

Страница 22: ...象 检查S4701以及连接电缆 T701一次侧的振荡波形是否 正常 检查T701二次侧的负载状态 检查J3701的周围电路以及连 接电缆 F7751是否正常 是 否 是 是 否 否 更换F7751 IC1201的引脚 34 是否处于 高电平状态 检查该电线 IC1201以及周围 电路 T7751 6一次侧的振荡波形是 否正常 检查Q7751 5 T7751 6以及 周围电路 更换萤光灯后 重新检查振 荡波形是否正常 无彩色 接收电视广播节目时 在电 视荧光屏上不出现色彩 演放录像带时 在电视荧光屏 上不出现色彩 使用S 录像功能时 在电视荧 光屏上不出现色彩 检查电脑调整工程中的菜单是否正确地被设定 IC802引脚 71 处的输入信号 是否正常 检查SC3301 SC线路以及周 围电路 IC802引脚 4 和 6 处的输入信 号是否正常 检查J3405 CB线路 CR线 路以及周围电路 否...

Страница 23: ...C303处的输入和 输出信号是否正 常 否 是 否 是 否 是 否 是 检查IC303以及 周围电路 IC7305引脚 11 和 16 处的输入信号 与引脚 3 和 5 处 的输出信号是否 正常 检查该线路 IC7305以及周围 电路 检查扬声器以及 周围电路 IC2001的引脚 55 是否处于低 电平状态 否 是 检查Q306 J4001以及周围 电路 检查耳机和周 围电路 IC2001的引脚 52 是否处于低 电平状态 检查LMUTE线 路 IC902引脚 1 和 7 处的输出信号 是否正常 检查IC902以及 周围电路 检查该线路 否 是 否 否 否 是 是 调谐器的引脚 16 处的输出信 号是否正常 检查调谐器的周 围电路 IC901引脚 60 处 的输入信号是否 正常 检查IC901 Q3301 Q3204 Q3205以及周围 电路 ...

Страница 24: ... a W NPs QKO W PKS I W NKM NK NJNK W bO molj fO NJOK qs OK W I hbvQ f OMMN UN hbvR f OMMN UO I L I PK L E 01234 L L E F I E F I L I L I I I N O NS N I I I L NN NO I m iLkqp L I I I MN L L I NO I I L M N V c M NO I I I L W W MN MO MP MN I L W W MO MR cS MO ...

Страница 25: ... M M M K R 11 P P P I 3 Y 12 N 13 G 14 15 16 0 0 17 0 0 18 19 20 0 0 21 0 0 22 23 1 24 1 1 2 2 2 2 0 B 25 7 9 7 7 7 7 4 0 0 0 0 5 26 第2页在屏表示画面上的调整工程菜单 Y的数据 白色75 RJQK N O O o rqlcc _ rqlcc W NM NM o rqlcc _ rqlcc I ü_ QK QJNK f OMMN UN UO I QJOK Oe QJPK OM RK RJNK H_ N H_J ag N O mPMP U RKMM MKMOs W RKMMs I RKMMs RJOK O lj _f p N O lj _f p RJPK q jm N O O __J I kqp q jm I __ P kqp q jm I m i q jm p...

Страница 26: ... LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT MAIN Unit Side A Y C SEPARATION Unit Side A MAIN Unit Side B Y C SEPARATION Unit Side B OPERATION Unit INVERTER Unit TERMINAL Unit ...

Страница 27: ...29 28 LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM ...

Страница 28: ...ce Ω is omitted K kΩ 1000 Ω M MΩ 2 All resistors are 5 unless otherwise noted J 5 F 1 D 0 5 3 All resistors are Carbon type unless otherwise noted C Solid W Cement S Oxide Film T Special N Metal Coating CAPACITOR 1 All capacitors are mF unless otherwise noted P pF mmF 2 All capacitors are Ceramic type unless otherwise noted ML Mylar TA Tantalum PF Polypro Film ST Styrol CAUTION This circuit diagra...

Страница 29: ...31 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M Ë OPERATION Unit ...

Страница 30: ...33 32 LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 1 2 JNLO ...

Страница 31: ...35 34 LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë MAIN Unit 2 2 JNLO ...

Страница 32: ...37 36 LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë TERMINAL Unit ...

Страница 33: ...39 38 LC 20A2H LC 20A2M 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë Y C SEPARATION Unit L ...

Страница 34: ...40 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M Ë INVERTER Unit ...

Страница 35: ...41 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M Y C SEPARATION Unit Side A L Y C SEPARATION Unit Side B L _ PRINTED WIRING BOARD ASSEMBLIES ...

Страница 36: ...42 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M MAIN Unit Side A ...

Страница 37: ...43 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M MAIN Unit Side B _ ...

Страница 38: ...44 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M OPERATION Unit Wiring Side TERMINAL Unit Wiring Side ...

Страница 39: ...45 6 5 4 3 2 1 A B C D E F G H LC 20A2H LC 20A2M INVERTER Unit Wiring Side ...

Страница 40: ...6 VHiNJM4580V 1 J NJM4580V AE IC1107 VHiNJM4580V 1 J NJM4580V AE IC1108 VHiNJM4580V 1 J NJM4580V AE IC1109 VHiNJM353M 1 J NJM353M AG IC1110 VHiBU4053V 1 J BU4053BCFV E2 AE IC1201 RH iX3378CEZZ J LR38797 AY IC1202 VHiPD485505 2 J UPD485505G 25 AY IC1204 VHiTC4W53U 1 J TC4W53FU AF IC1205 VHiTC4024BF1E J TC4024BF AG IC1206 VHiTC4052BF1E J TC4052BF AF IC2001 RH iX3477CEZZ J I C BA IC2002 VHiPST529DM 1...

Страница 41: ...Electrolytic AE C734 VCKYTV1CF105Z J 1 0 16V Ceramic AB C735 RC EZ0416CEZZ J 330 6 3V Electrolytic AD C736 RC EZ0416CEZZ J 330 6 3V Electrolytic AD C737 RC EZ1339CEZZ J 220 16V Electrolytic AD C738 RC KZ1025CEZZ J 1 0 10V Ceramic AB C740 VCEAPF1EN475M J 4 7 25V Electrolytic AC C741 VCKYTV1CF105Z J 1 0 16V Ceramic AB C746 VCKYCY1EF104Z J 0 1 25V Ceramic AA C747 VCKYTV1HB562K J 5600p 50V Ceramic AA ...

Страница 42: ...ramic AA C1222 VCKYCY1EF104Z J 0 1 25V Ceramic AA C2001 VCKYCY1HB102K J 1000p 50V Ceramic AA C2002 VCCCCY1HH221J J 220p 50V Ceramic AA C2003 VCEAPF1HW105M J 1 0 50V Electrolytic AB C2004 VCCCCY1HH220J J 22p 50V Ceramic AA C2005 VCCCCY1HH220J J 22p 50V Ceramic AA C2006 VCKYCY1EF104Z J 0 1 25V Ceramic AA C2007 VCKYCY1EF104Z J 0 1 25V Ceramic AA C2009 VCKYCY1EF104Z J 0 1 25V Ceramic AA C2010 VCKYCY1E...

Страница 43: ...VRS CY1JF000J J 0 1 16W Metal Oxide AA R809 VRS CY1JF000J J 0 1 16W Metal Oxide AA R810 VRS CB1JF220J J 22 1 16W Metal Oxide AC R811 VRS CY1JF222J J 2 2k 1 16W Metal Oxide AA R812 VRS CY1JF000J J 0 1 16W Metal Oxide AA R813 VRS CB1JF220J J 22 1 16W Metal Oxide AC R814 VRS CY1JF332J J 3 3k 1 16W Metal Oxide AA R815 VRS CY1JF000J J 0 1 16W Metal Oxide AA R816 VRS CA1JF470J J 47 1 16W Metal Oxide AB ...

Страница 44: ...RS CY1JF101J J 100 1 16W Metal Oxide AA R2032 VRS CY1JF471J J 470 1 16W Metal Oxide AA R2033 VRS CY1JF105J J 1 0M 1 16W Metal Oxide AA R2035 VRS CY1JF102J J 1 0k 1 16W Metal Oxide AA R2041 VRS CA1JF101J J 100 1 16W Metal Oxide AA R2042 VRS CY1JF101J J 100 1 16W Metal Oxide AA R2043 VRS CY1JF103J J 10k 1 16W Metal Oxide AA R2044 VRS CB1JF103J J 10k 1 16W Metal Oxide AA R2045 VRS CY1JF223J J 22k 1 1...

Страница 45: ...c AC C7056 VCEAPF0JW107M J 100 6 3V Electrolytic AC C7057 VCKYCY1CF104Z J 0 1 16V Ceramic AA C7058 VCKYCY1CF104Z J 0 1 16V Ceramic AA C7059 VCEAPF1HW474M J 0 47 50V Electrolytic AB C7060 VCCCCY1HH391J J 390p 50V Ceramic AA C7061 VCKYCY1CF104Z J 0 1 16V Ceramic AA C7062 VCCCCY1HH120J J 12p 50V Ceramic AA C7072 VCCCCY1HH1R0C J 1 0p 50V Ceramic AA C7085 VCKYCY1HB103K J 0 01 50V Ceramic AA C7101 VCKYC...

Страница 46: ...7057 RBLN 0059CEZZ J Ferrite Bead AB FB7058 RBLN 0059CEZZ J Ferrite Bead AB P7101 QPLGN0241CEZZ J Plug 2 pin AA P7102 QPLGN0841CEZZ J Plug 8 pin AB P7301 QPLGN0278GEZZ J Plug 2 pin AA P7305 QPLGN0278GEZZ J Plug 2 pin AA SC7001 QSOCN0484FJZZ J Socket 16 pin AE PRDAR3229CEFW J Heat Sink AG PSLDM0132CEZZ J Shield AE PSLDM4639CEFW J Shield AE QCNW 5767CEZZ J Connecting Cord AC XBPSD30P10JS0 J Screw AA...

Страница 47: ... 10k 1 16W Metal Oxide AA R3431 VRS CY1JF104J J 100k 1 16W Metal Oxide AA R3432 VRS CY1JF104J J 100k 1 16W Metal Oxide AA R3435 VRS CY1JF103J J 10k 1 16W Metal Oxide AA R3461 VRS CY1JF104J J 100k 1 16W Metal Oxide AA R3462 VRS CY1JF104J J 100k 1 16W Metal Oxide AA R3463 VRS CY1JF102J J 1 0k 1 16W Metal Oxide AA R3464 VRS CY1JF102J J 1 0k 1 16W Metal Oxide AA R3465 VRS TV1JD1R0J J 1 0 1 16W Metal O...

Страница 48: ...inet 1 2 GCOVA1808CEZZ J Cover LED AE 1 3 GCOVA1798CESA J Cover Front L AF 1 4 GCOVA1917CEKA J Cover Front R AG 1 5 GCOVA1932CESA J Cover IR Filter AC 1 6 GDORF2048CEKA J Front Door AF 1 7 HDECA0759CESA J Decoration Panel BW 1 8 HiNDP5645CESA J Indication Plate AD Cabinet Side 1 9 HiNDP5666CESA J Indication Plate AD Door Side 1 10 JBTN 2057CEKA J Power Button AF 1 11 LX HZ3111CEFN J Screw x4 AB 1 ...

Страница 49: ... 25 15 6 17 58 25 62 36 47 52 50 2 11 2 11 2 10 2 17 2 1 47 52 33 45 41 44 3 52 52 34 50 56 39 22 19 19 19 19 21 13 9 10 8 24 7 7 2 13 23 26 2 6 2 6 2 5 2 13 2 5 2 8 2 7 2 13 2 12 18 2 9 52 20 29 Terminal Unit Inverter Unit Y C Separation Unit Main Unit Operation Unit 1 11 1 12 1 8 1 14 1 20 1 4 1 15 1 2 1 3 1 1 1 11 1 9 1 6 1 7 1 5 1 10 1 4 31 52 37 46 1 17 1 16 1 19 1 19 1 18 1 13 1 21 ...

Страница 50: ...06000 J Screw x12 AA 53 XBBSF30P04000 J Screw x4 AA 54 XBBSF30P08000 J Screw x6 AA 55 XBBSF40P25000 J Screw x4 AA 56 XBPSD30P06JS0 J Screw AA 57 XEBSD30P08000 J Screw x8 AA 58 XEBSD40P10000 J Screw x2 AA 59 XEBSF30P08000 J Screw x4 AA 60 XEBSF40P16000 J Screw x5 AA 61 XTBSF30P12000 J Screw x4 AA 62 CZETK0093CE02 J Insulating Sheet AN SUPPLIED ACCESSORIES CPNLS1031CE03 J Speaker Net BG LHLDW1028GEZ...

Страница 51: ...d AC Adaptor Buffer Material Reinforcing Pad Speaker Net Reinforcing Pad Wireless Remote Conrol Antenna Cable Accessories Operation Manual Cable Clamp Batteries 包装箱 防震泡沫塑料衬垫 Wrapping Paper Caution Card 包装纸 交流电源线 使用说明书 接线固定夹 电池 无线电缆线 加强衬垫 加强衬垫 交流电转接器 遥控器 扬声器网 附件 ...

Страница 52: ...d in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan D JAPAN P JAPAN TQ1002 S Oct 2000 Printed in Japan NA KG ...

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