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Daewoo DQD-2100D Service Manual

Other manuals for DQD-2100D: Owner's Manual, Owner's Manual, Owner's Manual

Summary of DQD-2100D

  • Page 1

    S/m no. : vd6100net0 service manual model :dqd-6100d dqd-2100d daewoo electronics co., ltd. Jun. 2002 http : //svc.Dwe.Co.Kr.

  • Page 2: Contents

    External views .........................................................................................................2 1. Front views ........................................................................................................................ 2 2. Rear views..............................

  • Page 3: External Views

    1. Fornt views 1)dqd-2100d 2) dqd-6100d 2. Rear views 1) dqd-2100d 2) dqd-6100d 2 external views euro av digital audio out audio out (2 ch)video out euro av digital audio out audio out (5.1 ch) audio out (2 ch)video out.

  • Page 4: Specifications

    3 specifications 1. Prodcut features - over 500 resolution of horizontal frequency - disc playback of dvd, vcd, cd, cd-r, cr-rw - dolby digital decoding - 5.1ch analog signal output(6100, 6101) - dts output - screen zoom function - special playback function(slow playback/fast playback) - component o...

  • Page 5

    4 circuit diagram power supply schematic diagram(dqd-6100,220v).

  • Page 6

    5 circuit diagram video.

  • Page 7

    6 circuit diagram audio.

  • Page 8

    7 circuit diagram vfd/jog.

  • Page 9

    8 circuit diagram etc.

  • Page 10

    9 circuit diagram vcr_int(dvd).

  • Page 11

    10 circuit diagram atapi(dvd).

  • Page 12

    11 circuit diagram cpu-zr36703(dvd).

  • Page 13

    12 circuit diagram mpeg decoder.

  • Page 14

    2) primary rectification and smoothing circuit ac voltage passed through ac lnlet is rectified to brige rectification diode d801 and changes to dc voltage. After that it smooths the smoothing condenser c806. When c806 is charged at first, resistor r802 intercepts voltage current and protects d801, f...

  • Page 15

    14 circuit operational description picture 3 [ sunbber circuit ] 3) sunbber circuit sunbber circuit protects speedy voltage rising between collector and emitter when main switching tr is turned off. So collector and emitter voltage enter into safety operation and noise is decreased. When tr is turnd...

  • Page 16

    15 circuit operational description 5) costant-voltage circuit this circuit maintains constant voltage. When voltage is lower or higher than reference voltage(2.5v) of ic801 pin1, this circuit compensates for a loss. Base voltage of switching tr is controlled and final voltage is regulated by increas...

  • Page 17

    16 circuit operational description 7) output terminal when power is turned off at power applied status, +3.3v is applied to q822 base terminal and q824 mos fet outputs mvcc(+5v) to drain terminal. When power is turned on, low signal(0v) is applied to q822 base terminal. At this time, q824 mos fet ou...

  • Page 18

    17 circuit operational description gr7/p7 gr6/p6 gr5/p5 gr4/p4 gr3/p3 gr2/p2 gr1/p1 gr0/p0 vee vee sclk sout sin cs gr8/seg17 gr9/seg16 gr10/seg15 gr1 1/seg14 gr12/sec13 gr13/seg12 gr14/seg1 1 gr15/seg10 gr16/seg9 gr17/seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 vcc an0 an1 an2 an3 an4 an5 reset os...

  • Page 19

    18 circuit operational description 2. Front part operational description 1) key scan & fld driver interface 2) operation description * if user presses key while ic500(zr36705) implements key scan using vfd driver(pt6355), the key input data go to ic500 by serial communication, then ic500 analyzes an...

  • Page 20

    19 circuit operational description audio section 1. 5.1 ch audio dac ic 1) overview 24-bit, 192-khz sampling 6-channel enhanced multilevel delta-sigma digital-to-analog converter 2) functions it, as a 5.1ch d/a converter ic, transforms digital signals to analog signals by receiving 3 clock (system c...

  • Page 21

    20 circuit operational description 2. 2ch audio dac ic(ic300) : pcm1748ke 1) overview 24-bit, 96-khz sampling enhanced multilevel delta-sigma digital-to-analog converter 2) functions it, as a 2ch d/a converter ic, receives 3 clock and 1 data from mpeg decoder and 3 mode control signal from micom, an...

  • Page 22

    3. Op-amp ic (ic303, ic304, ic305) : njm4580m 1) overview dual operational amplifier 2) functions it amplifies analog audio signal from d/a converter ic. Each associates to and amplifies 2 channels, and then outputs 5.1 channel to jk300. Cf) 2ch audio dac ic (ic300) model outputs 2 channels to jk301...

  • Page 23

    22 circuit operational description ch ch output output 5. General audio operation for 5.1ch 1) overview it receives clock and data from mpeg decoder(ic405) and transforms digital signal to analog signal at audio d/a converter(ic350) then, amplifies analog signal (ic303, ic304, ic305)and outputs to 5...

  • Page 24

    23 circuit operational description mpeg b/d section picture 1. [ general block diagram] 1. Operational description of mpeg b/d 1) general operation of b/d (1) initial power supply operation when the power cord is plugged in, only ever power is outputted to use minimum power supply such as u-com and ...

  • Page 25

    24 circuit operational description picture 2. [mpeg decoder block diagram] 2. Mpeg decoder : zr36732(ic 405) 1) overview because ic 405(zr36732) includes video encoder function as well as mpeg decoding function, it outputs analog video signal directly from ic. Output signal could be selected as eith...

  • Page 26

    25 circuit operational description cpu dma controller interrupt control unit 10-bit a/d converter (4 ch) bus converter bus controller dram controller port 0 to port 3 bus signal data memory data uart(3ch) int 0 to int 5 an 0 to an 3 sio-si2 soo-so2 sco-sc2 a/v interface data a/v interface port pictu...

  • Page 27: Troubleshooting

    26 troubleshooting 1. Power circuit ✓ caution you must use insulated trance during the first part test of power circuit. No power power cord/fuse is ok? Voltage connected at d801? Voltage connected at l804? Switching wave at t801 pin #6,7,8? D821, d822, d823, d824, d825, d826, d827 are ok? Exchange ...

  • Page 28

    27 troubleshooting 2. Front circuits no vfd letter display or broken letter -15v obtained at f(+), -19.5v at f(-)? +5v obtained at ic710 pin #1, #44? -24v obtained at ic710 pin #16, #17? Input signal obtained at ic710 pin #12, #13, #15? Pulse output at ic710 pin #14? Check power circuit check power ...

  • Page 29

    28 troubleshooting 3. Audio circuit ✓ caution before the audio circuit test, check setup menu setting first by remote controller. A. Analog out no audio output from 5.1ch jack(jk300) in case of 2ch setting speaker downmix of set up menu is set on lt/rt or lo/ro? Clock signal at p205 pin #6, 7, 8 and...

  • Page 30

    29 troubleshooting no audio output from coaxial jack(jk302) receiver is on coaxial mode? Check ic 306 check ffc cable connected to p205 and mpeg decoder ic pin #133 yes yes no no audio digital signal at p205 pin #1? Audio digital signal at ic306 pin #1,2,3,4,5,6,8,9,10,11,12,13? Change receiver sett...

  • Page 31

    30 troubleshooting no video output from jk301 yellow pin tv setting on setup menu is pal mode? Yes no no no yes yes is there video signal from p205 pin #20? Is there video signal from q100,q101 emitter ? Check d100,101,102,103 change setting to pal mode check ffc cable connected to p205 and mpeg dec...

  • Page 32

    31 troubleshooting no s-video output from jk102 tv setting on setup menu is pal mode? Yes no no no yes yes video output of setup menu is set on s- video? Is there video signal from p205 pin #18,19? Check d112,113,114,115 change setting to pal mode change setting to s-video check ffc cable connected ...

  • Page 33

    32 troubleshooting no analog audio output is digital data transmitted from cpu and flash? Yes no no no yes yes is digital audio data transmitted to mpeg decoder ic pin #130-141? Is there audio signal from p481 pin #2-16? Check analog b/d check flash memory and cpu ic check mpeg decoder ic check ffc ...

  • Page 34

    33 troubleshooting no digital audio output is digital data transmitted from cpu and flash? Yes no no no yes yes is digital audio data transmitted to mpeg decoder ic pin #133? Is there audio signal from p481 pin #1? Check analog b/d check flash memory and cpu ic check mpeg decoder ic check ffc cable ...

  • Page 35

    34 troubleshooting no video with scart jack (jk103) is “tv type” item in video menu in setup screen set to “pal”? Yes no no no yes yes is there video signal in p205 #20 pin? Is there video signal in q107 emitter? Check d106 and d107. Set it to “pal”. Check ffc cable connecting with p205 and check al...

  • Page 36

    35 troubleshooting is there voltage change to 12v, 6v and 0v like below in jk013 #8 pin each time you press scart button on remote control (mode conversion)? No problem check jk103 and scart cable. No conversion to mode by pressing scart button on remote control. No is there voltage change in q111, ...

  • Page 37: Waveforms

    36 waveforms 1. Micom/mpeg kdv-n test dvd video (title1/chapter4) color bar 100% • micom serial waveform(ic500, zr36703) • os 500 christal waveform(ic500 ~ 92,91pin) 1) (ic500-7pin) 0.1s/2v 3.42v p - p , 1.73v/off set 2) (ic500-22pin) 0.5 /2v 3.42v p - p , 1.73v/off set 3) (ic500-23pin) 0.1s/2v 3.42...

  • Page 38

    37 waveforms 2. Micom/mpeg ic, loader and serial signal(p455) kdv-n test dvd video(title1/chapter4) color bar100% 9) (p455-3pin) 0.5 /2v 3.19v p - p p, 1.36v/off set 10) (p455-4pin) 0.5 /2v 3.19v p - p , 1.36v/off set 11) (p455-5pin) 0.5 /2v 3.19v p - p , 1.36v/off set 12) (p455-6pin) 0.5 /2v 3.19v ...

  • Page 39

    38 waveforms 21) (p455-15pin) 0.5 /2v 3.19v p - p , 1.36v/off set 22) (p455-16pin) 0.5 /2v 3.19v p - p , 1.36v/off set 23) (p455-17pin) 0.5 /2v 3.19v p - p , 1.36v/off set 24) (p455-18pin) 0.5 /2v 3.19v p - p , 1.36v/off set 25) (p455-23pin) 5ms/1v 2.64v p - p , 2v/off set 26) (p455-25pin) 0.5 /1v 3...

  • Page 40

    39 waveforms 3. Serial signal( p205) between dvd b/d and main b/d • optical signal which is output in mpeg • 2ch audio dac-mode contal signal • 2ch/6ch audio dac-clock signal 32) (p205-1pin) 0.5 /2v 3.28v p - p , 1.66v/off set ic405 - 133pin (spdif-145) 33) (p205-2pin) 20ms/2v 3.42 v p - p , 1.71v/o...

  • Page 41

    40 waveforms • 2ch/6ch-input data signal • 6ch-input data signal 39) (p205-10pin) 5 /2v 3.42v/p-p, 1.65v/off set ic405 - 136pin (asdat0) 40) (p205-11pin) 5 /2v 3.42v/p-p, 1.65v/off set ic405 - 137pin (asdat1) 41) (p205-13pin) 5 /2v 3.42v/p-p, 1.65v/off set ic405 - 138pin (asdat2) 42) (p205-17pin) 10...

  • Page 42

    41 waveforms 48) (p205-24pin) 10ms/2v 3.37v/p-p,1.73v/off set ic500-83pin (fpsel) 49) (p205-25pin) 0.2ms/2v 3.37v/p-p, 1.73v/off set ic500-84pin (fpclk) 50) (p205-27pin) 1ms/2v 5.38v/p-p, 2.68v/off set ic500-100pin (fpdout) • signal which is output from micom and input at vfd drive ic 4. Vfd • vfd d...

  • Page 43

    42 waveforms • op amp output waveform • audio- front l/r, rear l/r, center final output • hex inverting gates ic • optical finaloutput 56) (ic303-1pin)0.5ms/0.5v 813mv p - p , 5.89v/off set ic303-7pin ic304-1pin , 7pin ic305-1 pin 57) (ic305-7pin)0.5ms/200mv 175mv p - p , 5.89v/off set -> noise is a...

  • Page 44

    43 waveforms 6. Video output kdv-n test dvd video(title2/chapter4) color bar 100% • composite output • component output • s-video output 64) (jk301-yellowpin) 10 /1v 2.3v/p-p, 0v/off set (cvbs-c) 65) (jk501-blue pin)10 /0.5v 1.72v/p-p, 1.27v/off set (cvbs-g-y) 66) (jk501-red pin) 10 /0.5v 1.72v/p-p,...

  • Page 45

    44 waveforms 6. Scart output kdv-n test dvd video(title1/chapter4) color bar 100% • audio output 70) (jk301-1pin ) 0.5 /0.2v 292mv/p-p, 0v/off set (aor) 73) (jk103-8pin) 0.5 /0.5v 0v/p-p, 0v/off set pc12v in 4:3(av)mode 74) (jk501-8 pin )0.5 /0.5v 0v/p-p, 0v/off set dc 6v in 16:9(av wide) 71) (jk301...

  • Page 46

    45 components location guide on pcb bottom view.

  • Page 47

    46 j o g components location guide on pcb bottom view m p e g.

  • Page 48

    47 disassembly.

  • Page 49

    48 disassembly.

  • Page 50

    49 disassembly.

  • Page 51

    50 disassembly.

  • Page 52: Electrical Partslist

    51 ✐ c a u t i o n : in this service 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(http://svc.Dwe.Co.Kr) electrical partslist loc pat...

  • Page 53

    51 electrical partslist loc patrt-code part-name part-desc c348 hcqk201jba c chip cera 50v ch 200pf j 1608 c349 hcbk182kba c chip cera x7r 50v 1800pf k 1608 c351 hcqk221jba c chip cera 50v ch 220pf j 1608 c352 hclk471jca c chip cera 50v sl 470pf j 2012 c353 hclk471jca c chip cera 50v sl 470pf j 2012...

  • Page 54

    52 loc patrt-code part-name part-desc c343 cexf1c220a c electro 16v rsm 22mf (5x7) c347 cexf1c220a c electro 16v rsm 22mf (5x7) c350 cexf1c220a c electro 16v rsm 22mf (5x7) c354 cexf1c220a c electro 16v rsm 22mf (5x7) c357 cexf1c220a c electro 16v rsm 22mf (5x7) c361 cexf1c220a c electro 16v rsm 22m...

  • Page 55

    53 electrical partslist loc patrt-code part-name part-desc jp022 85801065gy wire copper awg22 1/0.65 tin coating jp023 85801065gy wire copper awg22 1/0.65 tin coating jp024 85801065gy wire copper awg22 1/0.65 tin coating jp025 85801065gy wire copper awg22 1/0.65 tin coating jp026 85801065gy wire cop...

  • Page 56

    54 loc patrt-code part-name part-desc r390 rd-az303j- r carbon film 1/6 30k ohm j r701 rd-az472j- r carbon film 1/6 4.7k ohm j r705 rd-az472j- r carbon film 1/6 4.7k ohm j r755 rd-az103j- r carbon film 1/6 10k ohm j r756 rd-az181j- r carbon film 1/6 180 ohm j r757 rd-az242j- r carbon film 1/6 2.4k o...

  • Page 57

    55 electrical partslist loc patrt-code part-name part-desc r407 hrfs103jba r chip 1/16 10k ohm j 1608 r408 hrfs103jba r chip 1/16 10k ohm j 1608 r409 hrfs103jba r chip 1/16 10k ohm j 1608 r412 hrfs103jba r chip 1/16 10k ohm j 1608 r413 hrfs103jba r chip 1/16 10k ohm j 1608 r414 hrfs103jba r chip 1/1...

  • Page 58

    56 electrical partslist 2. Dqd-2100d loc patrt-code part-name part-desc c413 cexf1c470a c electro 16v rsm 47mf (5x7) tp c415 cexf1c470a c electro 16v rsm 47mf (5x7) tp c417 cexf1c470a c electro 16v rsm 47mf (5x7) tp c424 cexf1c220a c electro 16v rsm 22mf (5x7) c433 cexf1c220a c electro 16v rsm 22mf ...

  • Page 59

    57 electrical partslist loc patrt-code part-name part-desc r802 rw02b229j- r wire wound 2w 2.2 ohm j r809 rs02f104js r m-oxide film 2w 100k ohm j small t801 57m8282217 trans smps dqd-2000d va801 dsvc471d14 varistor svc471d14a z0011 pvmpj1l144 main chip mount a dqd-2100d-d c102 hcqk220jba c chip cera...

  • Page 60

    58 electrical partslist loc patrt-code part-name part-desc c714 cexf1h220f c electro 50v rx 22mf 6.3x11 c807 cmxl2g333k c mylar 400v meu 0.033mf k c808 cbxb3a101k c cera semi 1kv rr 100pf k c809 cexf2c109v c electro 160v rss 1mf (6.3x11) tp c822 cexf1c331v c electro 16v rss 330mf (8x11.5) tp c826 ce...

  • Page 61

    59 electrical partslist loc patrt-code part-name part-desc jp054 85801065gy wire copper awg22 1/0.65 tin coating jp055 85801065gy wire copper awg22 1/0.65 tin coating jp056 85801065gy wire copper awg22 1/0.65 tin coating jp057 85801065gy wire copper awg22 1/0.65 tin coating jp058 85801065gy wire cop...

  • Page 62

    60 loc patrt-code part-name part-desc c453 hrfs102jba r chip 1/16 1k ohm j 1608 c454 hrfs102jba r chip 1/16 1k ohm j 1608 c455 hrfs102jba r chip 1/16 1k ohm j 1608 c456 hrfs102jba r chip 1/16 1k ohm j 1608 c457 hrfs102jba r chip 1/16 1k ohm j 1608 c458 hrfs102jba r chip 1/16 1k ohm j 1608 c459 hrfs1...

  • Page 63

    61 electrical partslist loc patrt-code part-name part-desc r519 hrfs330jba r chip 1/16 33 ohm j 1608 r520 hrfs000-ba r chip 1/16 0 ohm 1608 r521 hrfs102jba r chip 1/16 1k ohm j 1608 r522 hrfs330jba r chip 1/16 33 ohm j 1608 r526 hrfs103jba r chip 1/16 10k ohm j 1608 r527 hrfs222jba r chip 1/16 2.2k ...