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Daewoo CN-400FN Service Manual

Other manuals for CN-400FN: Service Manual
Manual is about: Daewoo DTH-2930SSFV Color Television Service manual

Summary of CN-400FN

  • Page 1

    Caution : in this manual, some parts can be changed for improving. Their performance without notice in the parts list. So, if you need the latest parts information, please refer to ppl(parts price list)in service information center. Service manual color television s/m no : tcm405fef0 may. 2006 chssi...

  • Page 2

    -1- safety precautions 2 specifications 5 circuit block diagram 6 alignment instructions 7 your remote control 7 service mode adjustment 8 assembly adjustment 10 ic description 14 uoc iii series 14 tda8358j vertical amplifier 22 tda6107ajf 24 24wc16-16 kb eeprom 25 la42072n-e audio amplifier 26 str-...

  • Page 3

    -2- safety precautions caution : do not attempt to modify this product in any way. Never perform customized installations without manufac- turer's approval. Unauthorized modifications will not only void the warranty, but may lead to your being liable for ant result- ing property damage or user injur...

  • Page 4

    -3- safety precautions caution : do not attempt to modify this product in any way. Unau- thorized modifications will not only void the warranty, but may lead to your being liable for any resulting property damage or user injury. Service work should be performed only after you are thoroughly familiar...

  • Page 5

    -4- safety precautions subject : implosion 1. All direct viewed picture tubes are equipped with an integral implo- sion protection system, but care should be taken to avoid damage during installation. Avoid scratching the tube. If scratched, replace it. 2. Use only recommended factory replacement tu...

  • Page 6

    -5- specifiction model dth-2930ssfv item chassis cm-405f tv standard ntsc-m, pal-m, pal-n power input ac 110-220v, 50/60hz power consumption 110w tuning system frequency synthesizer(fs) tuning system tuning ranges tv vhf(l) : ch2 - ch6 uhf(h) : ch7 - ch13 uhf : ch14 - ch69 catv vhf(l) : 5a, a,b,a-5-...

  • Page 7

    -6- circuit block diagram ac 120/220v 50/60hz 250v +65v +139.5v d801 +195v +139.5v.

  • Page 8

    -7- alignment instruction 1.Power use this button to turn your tv on or off. 2.Mute use to turn the tv’s sound on and off. 3.Wchv use these buttons to change channels on your tv, or select items in the menu system. 4.Cvolb use these buttons to change your tv's volume, to activate selec- tions in the...

  • Page 9

    -8- alignment instruction 1. Service mode adjustments follow the steps below whenever service adjustment is required. See table- a and table- b to determine if service adjustments are required. 1) how to enter the service mode using the user remote control. - turn the set on. - direct the remote con...

  • Page 10

    -9- alignment instruction.

  • Page 11

    -10- alignment instruction 2. Assembly adjustments 1) screen adjustment (s2) enter the service mode and select service adjustment s2. You can see the one horizontal line on the screen. Adjust the screen control volume (located on fbt) so that the horizontal line onscreen may be disappeared. Press s2...

  • Page 12

    -11- alignment instruction 4-2) vertical position adjustment. - select v.Slope item, adjust v.Slope data value till the horizontal line in the centre of the video signal is just at the position where the blanking stars. - select v.Center item, adjust v.Center data value to center the raster properly...

  • Page 13

    -12- alignment instruction 4-4). East / west adjustment adjust the h.Parallel, h.Size, h-bow, parabola, ew trapez, corner top, corner bottom to compensate for geometrical distortion. H.Parallel h.Size parabola corner top, corner bottom ew trapez.

  • Page 14

    -13- alignment instruction.

  • Page 15

    -14- ic description 1-1. Uoc iii block diagram 1. Uoc iii series.

  • Page 16

    -15- ic description 69 70 81 80 79 78 77 76 75 74 73 72 71 88 87 86 85 84 83 82 65 66 68 67 89 90 25 26 27 28 29 30 31 32 33 34 35 36 37 38 40 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 39 1 2 3 4 21 23 24 22 41 42 43 44 45 hercules full-stereo (ssdip90) 60 64 63 62 61 56 57 59 58 55 54 cvbs3/y3 a u...

  • Page 17

    -16- ic description symbol standard version description full-stereo/ mono+ a v stereo ssdip90 vssp2 1 ground vssc4 1 ground vddc4 3 digital supply to sdacs (1.8v) vdda3(3.3v) 16 supply (3.3 v) vref_pos_lsl 16 positive reference voltage sdac (3.3 v) vref_neg_lsl+hpl 17 negative reference voltage sdac...

  • Page 18

    -17- ic description vifin2 29 if input 2 vsc 30 vertical sawtooth capacitor iref 31 reference current input gndif 32 ground connection for if ampli er sifin1/dvbin1 (2) 33 sif input 1 / dvb input 1 sifin2/dvbin2 (2) 34 sif input 2 / dvb input 2 agcout 35 tuner agc output ehto 65 eht/overvoltage prot...

  • Page 19

    -18- ic description agc2sif 44/- agc capacitor second sound if vp2 45 2 nd supply voltage tv processor (+5 v) ifvo/svo/cvbsi (2) 46 if video output / selected cvbs output / cvbs input audioin4 audio 4 input audioin4l 47 audio-4 input (left signal) audioin4r 48 audio-4 input (right signal) cvbs4/y4 4...

  • Page 20

    -19- ic description svm 62 scan velocity modulation output fbiso/csy 63 ybac k input/sandcastle output or composite h/v timing output hout 64 horizontal output vsscomb 70 ground connection for comb lter vddcomb 71 supply voltage for comb lter (5 v) vin (r/p r in2/c x ) - v-input for yuv interface (2...

  • Page 21

    -20- ic description vdda1 86 analog supply for tcg m-controller and digital supply for tv-processor (+3.3 v) vrefad_neg 87 negative reference voltage (0 v) vrefad_pos 88 positive reference voltage (3.3 v) vrefad 89 reference voltage for audio adcs (3.3/2 v) gnda 87 ground vdda(1.8v) 90 analogue supp...

  • Page 22

    -21- ic description p1.6/scl 7 port 1.6 or i 2 c-bus clock line p1.7/sda 8 port 1.7 or i 2 c-bus data line vddp(3.3v) 9 supply to periphery and on-chip voltage regulator (3.3 v) p2.0/tpwm 10 port 2.0 or tuning pwm output p2.1/pwm0 11 port 2.1 or pwm0 output p2.2/pwm1 47 port 2.2 or pwm1 output p2.3/...

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    -22- ic description 2..

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    -23- ic description.

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    -24- ic description 3..

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    -25- ic description 4..

  • Page 27

    -26- ic description.

  • Page 28

    -27- ic description 6. Str-w6756 functions of each terminal terminal no. Symbols descriptions functions 1 d drain terminal mosfet drain 3 s/gnd source/gnd mosfet source / gnd 4 vcc set up terminal input of power supply for control circuit 5 ss/olp delay at overload / soft start set up terminal overl...

  • Page 29

    -28- waveforms appendix waveforms 1).I801 pin1 2).T402(fbt) hor.Out 3).T402(fbt) 190v(d406) 4).I701 pin73 hout 5).I701 pin76 v+.Out 6).I701 pin76 v-.Out.

  • Page 30

    -29- waveforms appendix 7).I701 pin75 ew out 8).I701 pin46 monitor out 9).I701 (x-tal) 10).I301 pin4 v.Out 11).I901 pin r.In 12).I901 pin r.Out.

  • Page 31

    -30- 1. No power troubleshooting guide appendix.

  • Page 32

    -31- troubleshooting guide appendix 2. No picture (a) (b) check the waveform of tu101 if pin ok : go to the figure (b) ng : go to the figure (a) tu101 tuner z101 saw filter if scl/sd 33v 5v check the voltage #7,8 i701 check clock,data #18,19 x701 24.576mhz check the crystal 5v 3.3v #22,43,45,63,80 #...

  • Page 33

    3. No sound (c) (d) check the output signal of i701 #57,58 ok : go to the figure (d) ng : go to the figure (c) tu101 tuner z101 saw filter if scl/sd 33v 5v check the voltage #7,8 i701 check clock,data #18,1 x701 24.576mhz check the crystal 5v 3.3v #22,43,45,63,80 #9,16,86,88 i601 la42072n #7 13v z10...

  • Page 34

    -33- troubleshooting guide appendix 4. Ch don’t memory or skip (e) check the iutput signal conditions ok : go to the figure (e) ng : loss of signal or weak signal tu101 tuner z101 saw filter if scl/sd 33v 5v check the voltage #7,8 i701 check clock,data #18,19 x701 24.576mhz check the crystal 5v 3.3v...

  • Page 35

    5. No color 6. No vertical deflection i701 #18,19 x701 24.576mhz check the crystal 5v 3.3v #22,43,45,63,80 #9,16,86,88 check the voltage i701 check the rgb out i301 tda8358j check the vertical signal #83,84,85 check the crystal x701 24.576mhz check the crystal #18,19 vertical #76,77 #1,2 #4 vertical...

  • Page 36

    -35- troubleshooting guide appendix.

  • Page 37

    Electrical parts list no loc parts code parts name parts description remark 1 zz100 48b5748c04 transmitter remocon r-48c04 (aaa) 2 zz110 ptacpwk009 accessory as dtq-29u4sc 3 zz120 ptbcshk016 cover back as dtq-29u1sc 4 m211 4852163100 cover back fr hips gy 29u1 5 m781 4857817630 cloth black felt 400x...

  • Page 38

    41 c408 cmyh3c702j c mylar 1.6kv bup 7000pf j 42 c409 cmye2g273j c mylar 400v pu 0.027mf j 43 c801 cl1uc3474m c line across 0.47mf 1j(ucvsndf/sv)+q/o 44 c802 cl1uc3474m c line across 0.47mf 1j(ucvsndf/sv)+q/o 45 c806 ceyd2d331d c electro 200v fhs 330mf (22x30) 46 c819 ceyf1e332v c electro 25v rss 33...

  • Page 39

    -38- electrical parts list 86 m681 4853747800 reta pcb nylon 66 87 m682 4853747800 reta pcb nylon 66 88 m683 4853747800 reta pcb nylon 66 89 pa906 4850708s03 connector yh025-08+yst025+ulw=500 90 pw801 4859907810 cord power as me301p+ter=2100 91 q401 tktc3229— tr ktc3229 92 q402 pth2sw7609 heat sink ...

  • Page 40

    -39- 131 pa907 485923182s conn wafer yw025-05 (stick) 132 r106 rs02z512js r m-oxide film 2w 5.1k ohm j small 133 r305 rs02z129js r m-oxide film 2w 1.2 ohm j small 134 r401 rs02z100js r m-oxide film 2w 10 ohm j small 135 r402 rs02z121js r m-oxide film 2w 120 ohm j small 136 r407 rs02z223js r m-oxide ...

  • Page 41

    -40- electrical parts list 176 c405 ccxb2h561k c cera 500v b 560pf k (tapping) 177 c413 cexf1h470v c electro 50v rss 47mf (6.3x11) tp 178 c414 ccxb2h102k c cera 500v b 1000pf k (tapping) 179 c416 ccxb2h102k c cera 500v b 1000pf k (tapping) 180 c418 ccxb2h102k c cera 500v b 1000pf k (tapping) 181 c42...

  • Page 42

    -41- 221 c732 cmxl1j224j c mylar 63v meu 0.22mf j (tp) 222 c734 cmxl1j224j c mylar 63v meu 0.22mf j (tp) 223 c735 cexf1c101v c electro 16v rss 100mf (6.3x11) tp 224 c737 cbxf1h104z c cera semi 50v f 0.1mf z (tapping) 225 c740 cexf1c101v c electro 16v rss 100mf (6.3x11) tp 226 c809 cexf1h109v c elect...

  • Page 43

    -42- electrical parts list 266 a001 4859818691 pcb main 330x246 d1b 267 c107 czsl1h470j c cera 50v sl 47pf j (axial) 268 c108 czsl1h470j c cera 50v sl 47pf j (axial) 269 c109 cczf1h103z c cera 50v f 0.01mf z 270 c110 cczb1h222k c cera 50v b 2200pf k axial 271 c111 cczb1h222k c cera 50v b 2200pf k ax...

  • Page 44

    -43- 311 d706 duz3r3b—- diode zener uz-3.3b 312 d805 d1n4937g— diode 1n4937g (tapping) 313 d806 d1n4937g— diode 1n4937g (tapping) 314 d807 d1n4937g— diode 1n4937g (tapping) 315 d808 dmtzj6r2c- diode zener mtzj 6.2c 316 d810 d1n4937g— diode 1n4937g (tapping) 317 d812 drgp15j—- diode rgp15j do-204ac 6...

  • Page 45

    -44- electrical parts list 356 r121 rd-az183j- r carbon film 1/6 18k ohm j 357 r201 rd-az224j- r carbon film 1/6 220k ohm j 358 r203 rn-az1801f r metal film 1/6 1.8k ohm f 359 r204 rd-4z222j- r carbon film 1/4 2.2k ohm j 360 r213 rd-az750j- r carbon film 1/6 75 ohm j 361 r301 rd-4z159j- r carbon fil...

  • Page 46

    -45- 401 r630 rd-az103j- r carbon film 1/6 10k ohm j 402 r632 rd-az103j- r carbon film 1/6 10k ohm j 403 r633 rd-az103j- r carbon film 1/6 10k ohm j 404 r634 rd-az103j- r carbon film 1/6 10k ohm j 405 r635 rd-az103j- r carbon film 1/6 10k ohm j 406 r636 rd-az472j- r carbon film 1/6 4.7k ohm j 407 r7...

  • Page 47

    -46- electrical parts list 446 r777 rd-az332j- r carbon film 1/6 3.3k ohm j 447 r778 rd-az101j- r carbon film 1/6 100 ohm j 448 r779 rd-az101j- r carbon film 1/6 100 ohm j 449 r780 rn-az5600f r metal film 1/6 560 ohm f 450 r803 rd-4z479j- r carbon film 1/4 4.7 ohm j 451 r804 rd-4z152j- r carbon film...

  • Page 48

    -47- 491 rv17 rd-az750j- r carbon film 1/6 75 ohm j 492 za03 85801065gy wire copper awg22 1/0.65 tin coating 493 za04 85801065gy wire copper awg22 1/0.65 tin coating 494 za05 85801065gy wire copper awg22 1/0.65 tin coating 495 za07 85801065gy wire copper awg22 1/0.65 tin coating 496 za08 85801065gy ...

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    Daewoo electronics corp. Printed date : may. 2006 686, ahyeon-dong, mapo-gu, seoul, korea. C.P.O. Box 8003 seoul korea.