ITT_28ctv_txt_p2911tf_tv_sch 电路图 维修手册.pdf

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1、R517 220 C506 470P R513 2K7 D501 IN4148 D502 IN4148 D503 IN4148 R512 220 R511 220 C507 470P C508 680P R514 2K7 R515 2K7 R504 1K R507 82K R508 82K R505 1K R509 82K R506 1K R503 470 R502 470 R501 470 R521 82 D505 IS4148 C510 0.01/500V C504 10u R516 4.7K R518 4.7K R519 47K R520 10K C509 Q802 D2539/2SC5

2、296 T801 R801A 1R1/2WD801 1N4937 C801220P/500V C802 10U/250V +180V HEAT 1 R336 470 C601A 0.22u/250V T601 C602 0.22U/250V S600 T602 RT601 MZ72-18 L801 DGC-HL-25 C105 10n R028 1K R027 1K R026 1K R0252K7 R139 2.2K C138 4700P C137 0.1u R136 27K C119 0.1u C133 470u R131 1K2 R1321K2 R133 1K2 R135 1K C141

3、0.1u R144 56K L113 22UH C143 4n7 R137 15K C142 2.2u trf1062 L101 C135 1u C103 0.1u C118 1u R121 150 C134 10n C132 470u C109 1u D634 RU4YX C634390P C653 100UF D650 3V9 C662 470UF/16V Q001 1815 R012 33K R001 33K C031 47PF C001 0.1u X001 4M C014 82PF C015 82PF R034 1K R033 1K R031 1K R029 1K C013 22P C

4、0232n2 Q801 2SC2482 C816 330P/500V HD R049 5.1K R037 39K R002 10K D108 1N4148 SC R116 100 R003 33K C002 0.1u R021 15K R018 5.6K R019 6.8K C318 0.1u R004 33K R629 4.7M/0.5W C629 2200P/400V 2200p/1K6V R145 8.2K D107 1N4148 R138 2.2K CT Q501 A1015 V501 Ro Go Bo +12V GND XP504 C812 1000u 2 R804 2R7 HV F

5、V SV C807 0.039U/200V D805 1N4937 R802 1R/0.5W C805 220P/500V T802 28 CTV5 TXT/AVST CRT HD BCLP CT Ro Go Bo SC VS 8V OSD B OSD G OSD R SDA SCL C011 0.1u C810 220P/2KV XS601 XS600 R517 4.7K C605 C606 C607 220u/400V D606 2 R625 6.8 R617 1K D619 MTZ11C D616 1S1555 D605 R611 5K6 R615 22K C603 2 R624 39

6、D603 D604 R626 2K2 C615 0.01 C616 1000/2KV 3 4 2 1 N615TLP621 R623 2K7 T611 R653 10K R670A 22/5W +140V C645 2200u/25V D635 RU4YX C635 1000u/35V Q682 C1815 R655 2K2 C637 470P ON/OFF 3 11 4 6 1 1413 15 7 9 10 12 52 IC501 STV5112 C301 100n C302 330n C306 100u/35V D302 1N4004 R311 220K R312 100K R324 68

7、K R313 15K C314 2200u C312 1n R320 2.2K R314 10K R335 100 R322 100 SCL SDA VS BCLV C843 5n6/1600V C842 6n8/1600V C811 27n/400V D803 1N4937 D802 RS3FS C309 4.7UF/160V L803 C809 0.27U/400V C839 1U/250V D813 FR104 1 R843 10K L804 35UH SCL CRAMP SDA CHOLD SYNC VCC FLYBACK GND OUT VOPS EWOUT SENS2 EWSENS

8、 SENS1 BREATH IC301 STV9306 SCL SDA +8V 5V(A) C442 1u C437 1u C443 1u C436 1u CQ04 1u CQ05 1u XS803 8 7 4 6 2 10 1 VIN3 C128 0.1u C127 0.1u C126 0.1u C659 1UF/50V C685 1UF RESET +5V +5VA 8OHM/8W 8OHM/8W C3417 1000UF/35V MUTE +29V R123 1K R124 1K C034 10u X101 4.43M C319 22n D810 IN4148 L801 4.7UH 1

9、R814 1K R426 100 R429 100 C434 100UF C3408 2200P C3421 2200P R31510K R610 0.33/1W D631 RU4AM C631 470P C641 100UF/160V C604 24V R329 4R7/2W VIDEO OUT C122 1u C117 1u C123 10u C108 1n C106 0.33u CF102 6.5M L103 8.2uH CF103 5.5M VIN2 VIN3 R3430 10K Q3404 C1815 R3420 680 C129 0.1u SAW101 R008 4.7K CVBS

10、 TEXT AGC 8V 5V(A) C121 47u R074 470 R009 4.7K L401 100UH C139 10n C131 470u R128 330K C125 1u R119 220 Q464 A1015D462 1N4148 D465 1N4148 C486 470u R484 22K R090 22K R331 10 C3411 100n R3414 4R7 R3417 10K R3415 4R7 R3413 10K R3416 100 R3412 100 C3409 3.3UF C3407 3.3UF C3416 470UF C3415 470UF C3413 1

11、00n 5 1 6 2 10 4 893 IC3401 TDA7263M C3419 100UF/35V R3411 1K R3409 1K R302 100 R301 100 C661 100UF/16V R073 270 R075 680 R072 120 NC BOUT GOUT ROUT Icath BOSD GOSD ROSD FBOSD XTAL3/BTUN XTAL2 XTAL1 CLPF X1/VAMP/CHROUT GND1 CVBSOUT1 Vcc1 BCL/SAF VERT HOUT LFB/SSC SLPF SCL SDA Vcc D GND D AUDIOOUT FM

12、CAP CVBSIN2 Vcc2 NC PIFLC2 FBEXT NC Y/CVBSIN3 NC APR BS CHR CVBSIN1 GND2 PIFLC1 EXTAUDIO INTCVBSOUT VccIF AM/FMOUT GND IF IFPLL TUNERAGCOUT PIFIN2 PIFIN1 AGCPIFCAP Vref IF AGCSIFCAP SIFIN2 SIFIN1 12345678910111213141516171819202122232425262728 29303132333435363738394041424344454647484950515253545556

13、 IC003 STV2246C/48C R011 5.6K R015 100 R0794.7K C008 0.1u R014 100 C433 2.2u C432 2.2u R422 5.6K R423 5.6K R424 2.7K C431 18n C429 100n C425 22n C424 100n C423 100n C428 100n C427 18n C426 5.6n C422 22n C421 5.6n R421 2.7K C435 10u RIN1 RIN2 LIN1 LIN2 C444 4.7uF C439 4.7uF C3406 0.1u C3420 0.1u C003

14、 4n7 C012 0.1u C005220n C004 220P OSD B OSD G OSD R OSD FB SDA SCL C021 82P C019 470n C036 22P R039 5K6 C035 4n7 C022 104 C033 0.1u +5V +5V OUT GND VCC IC011 C040 0.1u +5V CVBS TEXT VS-1 SC VT 33V SW6 P+ SW5 P- SW4 V+ SW3 V- R071 1K D311 32V/1w C146 4.7u/50V C107 10n R134 47k R810A 1R/2W R146 2.2K *

15、C144 150PF R640 15K/2W R650 10K R807 1K/1W R323 1 L001 100UH L002 10UH C1240.022u R143 2.2K C401 1u C402 1u R402 75 R401 75 L112 22UH R453 22K R452 22K R041 10 R043 10 VS-1 R149 10K D808 1N4004 L111 47UH L110 10UH +5V +5V +140V R142 10K R147 100 R148 100 Q611 1015 Q613 2SC4429/5299 D617 ES1 D614 1N4

16、148 C614 0.1u R619 47 R620 120K R620A 120K R622 15K Q612 2SC3807 R602 3R9/5W C613 4700P C603-606 1000P/1KV D603-606 ERC05-10B 21 3 IC604 7805 C658 0.1u C671 0.1u R638 68K R639 22K R635 150K R636 6K8 VR631 2K Q631 C1815 Q685 C1815 Q686 A1015 D685 6V2 D641 6V2 R688 10K R689 22K R687 560K R686 150K D62

17、6 33V Q652 2SA1015Y C650 10UF/16V 33V +12V C801A 100P/50V C801B 330P/500V C808 0.1U/250V R808 8K2/2W R809 8K2/2W R817 1K5 R813 100 L819 0.2UH L818 0.6UH 9 L802A 100UH C809A 0.027U/400V C807A 56P D013 1N4148 +5V 3 OSD FB 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ROLO RI LI SW BI VI VO FBI

18、 GIRI SCART1 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ROLO RI LI SW BI VI VO FBI GIRI SCART2 C3418 0.01u R450 22K R451 22K R455 2K R454 22K R434 560 R433 560 R408 560 R406 68 R407 68 Q402 C1815 +8V RO LO +12V C145 4.7U D134 1N4148 BCLP C813 0.1u R310 22K BCLV VCC BH BL AGC VT BU IF 8315

19、467291011 TU201 Q206 2SA1015Y Q204 2SA1015Y Q205 2SA1015Y D209 1N4148 D210 1N4148 D211 1N4148 R2315K6 R232 5K6 R233 10K R237 10K R234 10K R255 4K7 L202 47UHC239 0.1u C240 10u C236 10u C238 10u C235 47u VT AGC BSW2 BSW1 D004 1N4148 SDA SCL R060 6K8 R007 4K7 S-SW1 R005 4K7 R006 10K R036 6K8 ON/OFF +5V

20、 SAW2 SAW1 BSW2 BSW1 R065 4K7 R066 4K7 +5V +5V 180V HEAT XP501 VO1 VO1 LIN2 RIN2 VIN2 LIN1 RIN1 +29V D461 1N4148 D463 1N4148 R3431 47K +5V +8V MUTE C403 10n R102 33K R101 47K C111 22u C151 0.1u C152 0.1u C153 0.1u R153 75 R154 75 R155 75 R156 75 FBI RI GI BI S-SW1 FBI RI GI BI RO LO R015A 1K R015 1K

21、 D001A HFT505M GREENRED CN001/5 CN001/3 CN001/4 CN001/2 CN001/1 +8V RESET E0 E1 E2 GND SDA SCL WC VCC IC001 ST24C01 C009 100uF 4 5 3 1 D012 1N4148 C327 100P C328 100P C812A 100u/160V R801 1R/2W +12V C600A 0.22uF/400V C617 0.015u 5 8 2 3 9 13 16 17 9 15 C657 0.1u R637 180K C654 470UF/16V 21 3 IC605 7

22、805 C652 0.1u C674 470UF/16V +8V 21 3 IC602 7808 C690 0.1u C675 0.1u C656 100UF/16V 21 3 IC606 7812 C651 0.1u Q683 B892 R685 10K C655 10UF R650 1K Q401 C1815 R404 470 C417 0.1u C450 1n C451 1n C452 1n C453 1n C408 0.1u C407 10UF C017560 R076 10 C041 10UF C067 10UF BL BH BU C233 1n F601 2A250V AC230V

23、 50Hz XS600A R017 330K+8V SP601 SP602 C3402 0.39u D3402 4148 D3404 4148 D3401 4148 D3403 4148 C3401 0.39u C161 18PF R317 1K C505 10UF VCOIL HCOIL R129 CN101 XS804 2 K2955M Audio Audio VIDEO OUT C112 47PF C113 47PF C114 47PF XP600 R808A 8K2/2W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1516 17 18 19 20 21 22 2

24、3 24 25 26 27 28 29 30 INL MXOR INR MINR MOR BIR BOR BIL BOL MOL MILROT LOT RIN4 RIN3 RIN2 RIN1 LIN1 LIN2 LIN3 LIN4 MXOL AGND VS CRF SDASCL DGND TRR TRL IC401 TDA7439 OSC G B NC NC NC NC NC S-SW DESIGN ON/OFF NC MUTE NC RESET IRIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 43 44 45 46 47 48 49 50

25、51 52 53 54 55 56 NC 42 19 20 21 22 23 24 25 26 27 28 41 29 30 31 32 33 34 35 36 37 38 39 40 TXCF CVBSO AVDD2 JTMS WSS TELETEXT AGND GND JTRETO PXFM AVDD1 HSYNCR FB SDA SCL VDD JTDO WSCF WSCR AVDD3 TEST0 MCFM JTCK KB INPUT NC VT STDBY LED STDBY LED OSC NC VSYNC NC SAW-SW2 NC SAW-AW2 BSW2 BSW1 NC IC002 ST92195 Audio R016 6K8 S-SW2 S-SW2 R629A 4.7M/0.5W RadioFans.CN 收音机爱 好者资料库