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  4. DHC-XD 350
  5. Service Manual

Daewoo DHC-XD 350 Service Manual

Manual is about: Digital Home Cinema System

Summary of DHC-XD 350

  • Page 1

    Dhc-xd350 digital home cinema system.

  • Page 2: Dhc-Xd350

    1. Safety precautions ......................................................3/4 2. Specifications....................................................................5 3. Location of users controls....................................6/8 -. Front panel. -. Rear panel. -. Display. -. Remote controller....

  • Page 3

    1. Safety precautions warning: to prevent fire or electric shock, do not expose this appliance to rain or moisture. Caution :to reduce the risk if electric shock, do not remove cover (or back). No user serviceable parts inside. Refer servicing to qualified service personnel. This symbol is intended ...

  • Page 4

    1. Safety precautions 13.Outdoor antenna grounding - if an outside antenna is connected to the receiver be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the national electrical code, ansi/nfpa 70, provides info...

  • Page 5

    2. Specifications dhc-xd350 power output 1% thd(din) total harmonic distortion s/n ratio dolby frequency response large (dolby digital) small fm tuner section (fm ant impedance : 75 ohms) power supply voltage ( option ) ac 110v or 120v or 127v or 220v or 230v or 240v (50/60hz) power consumption stan...

  • Page 6

    3. Location of users controls play digital home cinema system -. Front panel 1) dhc-xd300 6 dhc-xd350 digital home cinema system dhc-xd350 vol. Down up open/close play stop prev skip next function on/off power phones front panel 1. Power on/off switch 2. Dvd/video cd/mp3 cd/audio cd disc tray 3. Rem...

  • Page 7

    3. Location of users controls dhc-xd350 -. Rear panel -. Display 1. Speaker configuration indicator 2. Title indicator 3. Preset indicator 4. Chapter indicator 5. Track indicator 6. File indicator 7. Sub indicator 8. Dir indicator 9. Total indicator 10. Remain indicator 11. Sleep indicator 12. Sourc...

  • Page 8

    8 3. Location of users controls dhc-xd350 -. Remote controller 1. Standby/on button 2. Open/close button 3. Mute button 4. Input selector: dvd button 5. Input selector: tuner button 6. Input selector: video, tv/aux button 7. Fast reverse(fr) ( ) button 8. Skip prev ( ) button 9. Speaker setup button...

  • Page 9

    4. Connecting to equipment dhc-xd350 -. Connecting to tv 9 if the tv or monitor is equipped with an s video input, make the s video connection in addition to the normal video connection. The s video connection will provide higher quality picture playback. For america version: optional 21-pin scart c...

  • Page 10

    4. Connecting to equipment -. Connecting to audio & video 10 dhc-xd350

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    4. Connecting to equipment -. Connecting to speaker -. Connecting to recording equipment 11 dhc-xd350 before connecting refer also to the instruction manuals of the speakers. This machine is designed to reproduce optimum sound quality when speakers with the specified impedance below are connected.Pl...

  • Page 12

    5. Trouble shooting guide dhc-xd350 12 1. Basic operating is standby led on? Push power on. Is power on? Does initial read work turn power on. Does it play? Does it output audio? Ok yes yes yes yes yes yes check audio circuit. No check tracking servo circuit. No check laser circuit. Check focus circ...

  • Page 13

    13 5. Trouble shooting guide dhc-xd350 check if the power part of the front is ok. Check if the remocon waveform of the ic703 pin(31). Refer to micom circuit. Refer to power supply circuit. Check if the ic702 pin(1) is ok. Replace ic702. Check rmc circuit. Yes yes no no no yes 1 led on push power on...

  • Page 14

    14 5. Trouble shooting guide -. Audio part check if the ic202 pin 23,24, 27, 28, 29, 30, 33, 34 and ic201 pin 27, 28, 33, 34 waveform is ok. Check if the j801 waveform is ok. Ok check if the ic201, 202 pin 14 is ok. Check if the ic201, ic202 pin 35 is high? Refer to sta304a. Check if the ic801, ic80...

  • Page 15

    15 5. Trouble shooting guide dhc-xd350 check if the ic202 pin 23,24, 27, 28, 29, 30, 33, 34 and ic201 pin 27, 28, 33, 34 waveform is ok. Check if the j801 waveform is ok. Ok check if the ic201, 202 pin 14 is ok. Check if the ic201, ic202 pin 35 is high? Refer to sta304a. Check if the ic801, ic802, i...

  • Page 16

    16 5. Trouble shooting guide dhc-xd350 ok check if the ic208 is ok. Check if the ic210 pin 1, 7 waveform are ok. Check if the ic401 pin 12, 19 waveform are ok. Check if the ic406 pin 1, 7 waveform are ok. Check if the j401 waveform is ok. Refer to mpeg pcb. Refer to dsp pcb. Refer to filter circuit ...

  • Page 17

    17 5. Trouble shooting guide dhc-xd350 optical out abnormal check if the ic407 pin 3 waveform is ok. Check if the ic405 pin 11 is ok check if the ic304 pin 12 is ok. Refer to dir circuit ak4112. Replace optical ic. Refer to 74hcu04 circuit ic405. Refer to mpeg circuit. Yes yes yes no no no main volu...

  • Page 18

    18 5. Trouble shooting guide dhc-xd350 video out abnormal check if the video jack is ok. Check if the ic404 is ok. Check ic507. Refer to video jack. Check if the ic404 pin 2, 3 is ok. Ok refer to front circuit. Yes yes no no no yes check if the ic404 pin 7 is ok. Refer to power supply circuit. No ye...

  • Page 19

    19 5. Trouble shooting guide dhc-xd350 pick-up unit control abnormal check if the cn706 is ok. Check if the atapi cable is normally. Check if the pn302 pins(1)(2)(5)(6) level is ok. Check if the pn302 pin(3) is ok. Check if the ic102 pin165 is ok. Check pattern open or short. Refer to ic102 (mt1388)...

  • Page 20

    6. Dvd program download method dhc-xd350 insert the update disc into the disc tray, then the dvd receiver reads the disc and update the firmwafe itself as followings. @ insert the update disc. "bank 30. Rom" no status vfd monitor set condition 1 starting update loading loading door close 2 detect th...

  • Page 21

    7. Waveforms of major check method dhc-xd350 -. Audio out signal waveform -. Dac output signal waveform -. Optical output audio data signal waveform -. L/r clock data waveform during normal play -. Serial data output waveform during normal play 21 test point : dvd test disc mdvd-w111 track2 color ba...

  • Page 22

    -. Cr output data waveform in component output -. Cb output data waveform in component output -. Y output data waveform in component output 7. Waveforms of major check method dhc-xd350 test point : dvd test disc mdvd-w111 track2 color bar 22.

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    8. Internal block diagram of ics dhc-xd350 ak-4112a 23.

  • Page 24

    8. Internal block diagram of ics dhc-xd350 ame1117 dsp src i2s ac`97 s/pdif ddx i2s pll i2c reset lrcki / sync sdi_1 / sdata _out sdi_2 / sdata_ in rxp rxn bicki / bit_cl sdo_1 sdo_2 sdo_3 lrcko b icko xti xto left_a left_b right_a right_b sleft_a sleft_b sright_a srig ht_b lfe_a lfe_b scl sda sa ra...

  • Page 25

    8. Internal block diagram of ics dhc-xd350 cs4228a ba4560f 25.

  • Page 26

    8. Internal block diagram of ics dhc-xd350 l18 22 µ h l19 22 µ h c30 1 µ f c20 100nf c99 100nf c101 100nf c107 100nf c106 100nf c23 470nf c55 1000 µ f c21 100nf c58 100nf c58 100nf r57 10k r59 10k r63 20 r98 6 r100 6 c53 100nf c60 100nf c31 1 µ f c52 330pf r104 20 c109 330pf 15 m3 in1a in1a ibias co...

  • Page 27

    8. Internal block diagram of ics dhc-xd350 cs4341 c o 15 2 14 3 13 4 16 1 11 6 10 7 9 8 12 5 reset rst mutec mute control serial data sdata aouta analog output a serial clock sclk va analog power ft/right clock lrck agnd analog ground master clock mclk aoutb analog output b scl/cclk scl/cclk ref_gnd...

  • Page 28

    8. Internal block diagram of ics dhc-xd350 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89...

  • Page 29

    8. Internal block diagram of ics dhc-xd350 hy57v161610dtc-8 29.

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    8. Internal block diagram of ics dhc-xd350 la7952 njm4558m nju7313a 30

  • Page 31

    9. Block diagram 31 dhc-xd350 main block.

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    9. Block diagram 32 dhc-xd350 in/out block.

  • Page 33

    9. Block diagram 33 dhc-xd350 regulator block.

  • Page 34

    Dhc-xd350 6pin 100mm 1.0p 27pin 100mm 1.0p 25pin 370mm 1.0p 13pin 100mm 1.0p 11pin 220mm 1.0p 6pin 150mm 1.0p 8pin 220mm 1.0p 9cd6587200 : xd350 10. Wiring diagram 34 s/n : 9cd6587200 : xd350 s/n : 9cd6586601 : xd300 9cd6587201 : xd350

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    11. Schematic diagram 35 dhc-xd350 -. Amp.

  • Page 36

    11. Schematic diagram 36 dhc-xd350 -. Front.

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    11. Schematic diagram 37 dhc-xd350 -. Ddx.

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    11. Schematic diagram dhc-xd350 -. Io 38.

  • Page 39

    11. Schematic diagram dhc-xd350 -. Mpeg decoder ic501 es 4408/4438 39.

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    11. Schematic diagram 40 -. Mpeg output dhc-xd350

  • Page 41

    -. Regulator dhc-xd350 11. Schematic diagram 41.

  • Page 42

    1-2) bottom view -. Front pcb 1-1) top view 12. Printed circuit diagram 42 1) dhc-xd350 front pcb.

  • Page 43

    2) bottom view -. Io pcb 1) top view 12. Printed circuit diagram 43.

  • Page 44

    2) bottom view -. Mpeg pcb 1) top view 12. Printed circuit diagram 44.

  • Page 45

    Dhc-xd350 -. Main pcb 12. Printed circuit diagram 45 1) top view.

  • Page 46

    Dhc-xd350 -. Main pcb 12. Printed circuit diagram 46 2) bottom view.

  • Page 47

    -. Standby pcb dhc-xd350 12. Printed circuit diagram 47 -. Regulator pcb dhc-xd350

  • Page 48

    13. Mechanism pc+abs,v2 secc 0.6t 3 mmu31000000 tray,disc msc20000200 may01000100 1 2 screw,tap(damper) ay feeding msc20000300 may01000200 msc20000300 epb17000000 may01000000 mpr31010000 5 4 9 6 7 8 screw,tap(cover,top) screw,tap(pcba,main) ay t/cover pcba,main ay loading cover,btm v2 1 ms nz 3 t2ws...

  • Page 49

    14. Exploded view and mechanical parts list dhc-xd350 49.

  • Page 50

    14. Exploded view and mechanical parts list dhc-xd350 no. Name of part dhc-xd300 dhc-xd350 discription q’ty remarks 1 panel front 9cd0310000 9cd0310400 mips 1 2 door holder 9cd1813400 ¡ mips 1 3 knob power 9cd1346900 9cd1347400 mips 1 4 knob volume 9cd1347000 9cd1347700 abs mips abs mips abs mips 1 ...

  • Page 51

    15. Electrical parts list dhc-xd350 1 tuner module tu001 9737650501 kst-mv114ma1-0 o o 52 r chip hr738 hrft151jba 1/10 150 ohm j o 1 pcb front as 11000 9cdc060900 dv-215 o o 53 r chip hr739 hrft181jba 1/10 180 ohm j o 2 pcb front b700 9cd6586600 289.5x122.5xt1.6 o o 54 r chip hr740~742 hrft103jba 1/...

  • Page 52

    15. Electrical parts list dhc-xd350 location part-code part-desc xd300 xd350 part-desc no part-name xd300 xd350 no part-name location part-code 32 c chip cera hc439 hcbk103kba 50v x7r 0.01mf k 1608 o o 84 ic chip ic406 1njm4558m- njm4558m o o 33 diode sw chip hd402~404 dzds160--- kds160 o o 85 ic tx...

  • Page 53

    15. Electrical parts list dhc-xd350 location part-code part-desc xd300 xd350 part-desc no part-name xd300 xd350 no part-name location part-code 47 c chip cera hc224 hcbk105kba 50v x7r 1mf k 1608 o o 99 r chip hr227~228 hrf4220jea 1/4w 22 ohm j 3216 o o 48 c chip cera hc225~226 hcbk222kba 50v x7r 220...

  • Page 54

    15. Electrical parts list dhc-xd350 location part-code part-desc xd300 xd350 part-desc no part-name xd300 xd350 no part-name location part-code 151 ic regulator ic207 1ld1117s33 ld117as33tr 3.3v (to-223) o o 43 r chip hr520~532 hrft100jba 1/10 10 ohm j 1608 o o 152 ic ic208 1cs4228a-- cs4228a (codec...

  • Page 55

    15. Electrical parts list dhc-xd350 location part-code part-desc xd300 xd350 part-desc no part-name xd300 xd350 no part-name location part-code 95 coil chip l508 hlc479j03a 4.7uh chip 2012 o o 45 r carbon film r901 rd-4z101j- 1/4 100 ohm j o o 96 r chip l509~510 hrft561jba 1/10 560 ohm j 1608 o o 46...