1. DL manuals
  2. Daewoo
  3. TV
  4. DUA-3270GB
  5. Service manual

Daewoo DUA-3270GB Service manual

Other manuals for DUA-3270GB: Instruction Manual
Manual is about: Digital Television CHASSIS: CP-770

Summary of DUA-3270GB

  • 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 digital television chassis : model : cp-770 dua-3291...

  • Page 2: Table of Contents

    Table of contents 1. Specification 3 2. Block diagram 4 3. Eeprom presetting data 6 4. Service remote control(r-30svc6) 7 5. Adjustment method 8 6. Trouble-shooting 10 7. Schametic diagram 19 8. Printed circuit board 24 9. Mechanical exploded diagram 29 10. Part list 30

  • Page 3: 1. Specification

    1. Specification 3 model dua-3291gb, dua-3270gb power source ac 220v ~ 240v, 50hz power consumption 120w picture tube 76cm audio output 7w(l) + 7w(r), 8 h 890 dimensions(mm) w 580 d 564 weight(kg) 67 vhf band i : ch2 ~ ch4 band ii : ch5 ~ ch12 reception channel canle band : s1’ ~ s3’, s1 ~ s20 hyper...

  • Page 4: 2. Block Diagram

    4 2. Block diagram 1) analog part.

  • Page 5

    5 block diagram td1316al (digital tuner) drx - 3975d (cofdm demodulator) i2c , agc if fe1data(0..7), fe1clk, fe1start, fe1valid, 74 alvc164245 (buffer) pcmcia mde9518 ts1 xc1_vcc5/3en tps2211a (power supply) xci1 main interface y/c, r/l, spdif, uart, etc. Guestbus amd29lv128 (flash) jtag k4s561632c ...

  • Page 6: 3. Eeprom Presetting Data

    6 3. Eeprom presetting data vert. Position -24 virtual dolby option +8 vert. Amplitude +206 nicam sensitivity -20 vert. Dvb offset -30 prescale fm_am 0 vert. Zoom +230 prescale nicam +300 vert. Linearity +40 prescale scart(av) +430 vert. S-correction +75 prescale dvb +255 vert. Blanking start +341 m...

  • Page 7

    7 4. Service remote control (r-30svc6) * factory remocon no. Symbol function 1 power power on/off 2 s. Stop service bus start/stop 3 pr ¡ª pr up(in svc mode) 4 pr ¡ pr down(in svc mode) 5 vol max vol max 6 vol min vol min 7 h/r heat run 8 svc svc on/off 10 ex-factory out going 11 aft cushion adjust ...

  • Page 8: 5. Adjustment Method

    8 5. Adjustment method “** this adjustments should be done by using svc remote controller “”r-30svc6””” micom programming -micom should be programmed by using pc with operation tests. -the specific s/w and adapter are needed for micom programing. Screen adjustment (1) press the svc key of the svc re...

  • Page 9

    9 alignment instruction horizontal width adjustment -pattern : retma -adjust with h-width +/- keys so that the left and the right ‘3’ marks of the retma pattern may be located at the boundaries of the screen. Pincushion(e/w) adjustment ( pattern : pal cross hatch ) (1) parabola adjustment -adjust wi...

  • Page 10: 6. Trouble Shooting

    10 1. No raster 6. Trouble shooting stand-by led check check r817 dc 3.3v check q809, q810, i806 check i804 check #4 of i801 check #1 of i801 (switching) check #1 of i801 (dc 300v) check d801~d804 and d809~d810, lf802 check/replace f801 check stand-by circuit power on check with remote controller ch...

  • Page 11

    11 trouble shooting chats check secondary voltage check #2, #21, #24, #25, #43, #46, #65 #68~#70, #87 of i501 check #63~#64 of i501 check #71 of i504 check #31~#32 of i501 check #33 of i501 check p902~p904 (b+, micom_sda/scl, uart_tx/rx, boot option) abnormal b+ abnormal micom_sda/scl abnormal uart_...

  • Page 12

    12 2. No picture(raster ok) trouble shooting charts (1)analogue mode check signal #16~#18 of i501 check/replace scl/sda, 5v line of tuner check/replace sf01 check/replace i501 check/replace att cable check #6~#9 of i901 check/replace q502~q504 and 5v line check/replace q902~q904 and voltage/heater l...

  • Page 13

    13 trouble shooting charts (2)digital mode check signal #54~#55 of i501 sheck signal #16~#18 of i501 check #6~9 of i901 check/replace q902~q904 and heater line check/replace crt board check #119~#120 of i100 check/replace scl,sda,x-tal and b+ line of i501 check/replace q502~q504 and 5v line check/re...

  • Page 14

    14 trouble shooting charts (3)external av mode check external connection check signal #50,#52~#53, #56~#59 of i501 check signal #16~#18 of i501 check #6~#8 of i901 check/replace q902~q904 video, heater voltage line check/replace crt board check external equipment check/replace i501 check/replace q50...

  • Page 15

    15 3. No vertical scanning(one horizontal line raster) trouble shooting charts check dy connector check input voltage of i301 check vertical drive pulse(vert +) #2 of i301 check vertical drive feedback pulse(vert -) #1 of i301 check/replace dy check/replace d407,d408,d313 (14v, 45v line) check #4 of...

  • Page 16

    16 4. No sound trouble shooting charts check mute or volume level check speaker and connection check audio_l/r (#6,#12 of i602) check sound b+ (#3, #16 of i602) check #10 of i602 check/replace analog 5v, s/b 5v aound mute line check #84~#85 of i501 check #72~#73 of i501 check/replace b+, scl,sda of ...

  • Page 17

    17 5. Remote control unit trouble trouble shooting charts check battery of remote control check ir of preamp and vcc of preamp (ic01) check/replace #37 of i501 replace battery check/replace preamp(ic01) abnormal normal check connection of main and decoder check voltage of +1.8v line. If voltage valu...

  • Page 18

    18 7. No digital audio out(lr, spdif) trouble shooting charts check connection of main and decoder pcb check sound out pin : cn300 — no.12,13pin(lr), no.15 pin(spdif).

  • Page 19

    19 7. Schametic diagram 1) alalog main part.

  • Page 20

    20 schametic diagram 2) power part.

  • Page 21

    21 schametic diagram 3) digital main part-1.

  • Page 22

    22 schametic diagram 3) digital main part-2.

  • Page 23

    23 schametic diagram 3) digital main part-3.

  • Page 24

    24 8.Printed circuit board 1. Main pcb.

  • Page 25

    25 printed circuit board 2. Power pcb.

  • Page 26

    26 printed circuit board 3. Digital pcb(top).

  • Page 27

    27 printed circuit board 4. Digital pcb(bottom).

  • Page 28

    28 printed circuit board 5. Crt pcb 6. Union pcb.

  • Page 29

    29 9.Mechanical exploded diagram _pp¥¡\ ª ø ¯lfl“ ›t§ Œ x b ª ¡ Ø lfiØpfiØ9pl¡.

  • Page 30: 10. Part List

    30 g924 4sg0dx0001 spark gap ssg-102-a1 (1.0kv) g925 4sg0dx0001 spark gap ssg-102-a1 (1.0kv) q902 tbf423—— tr bf423 to-92 q903 tbf423—— tr bf423 to-92 q904 tbf423—— tr bf423 to-92 r912 rn02b102js r metal film 2w 1k ohm j small zz200 ptcpjae133 pcb crt axial as dua-3291fls-s a001 4859830913 pcb crt c...

  • Page 31

    31 loc part code part name part description remark loc part code part name part description remark part list pa502 4950712005 connector yh025-12+yst250+ulw=100 r588 rs02y229j- r m-oxide film 2w 2.2 ohm j r589 rs02y229j- r m-oxide film 2w 2.2 ohm j r593 85801060gy wire copper 1/0.6 tin coating r594 8...

  • Page 32

    32 loc part code part name part description remark loc part code part name part description remark part list rcv10 hrft330jba r chip 1/10 33 ohm j 1608 rcv12 hrft330jba r chip 1/10 33 ohm j 1608 zz200 ptmpjre133 pcb main radial as dua-3291fls-s c101 cmxl1j105j c mylar 63v meu 1mf j c501 cexf1c220a c...

  • Page 33

    33 loc part code part name part description remark loc part code part name part description remark part list j049 85801060gy wire copper 1/0.6 tin coating j051 85801060gy wire copper 1/0.6 tin coating j052 85801060gy wire copper 1/0.6 tin coating j053 85801060gy wire copper 1/0.6 tin coating j054 85...

  • Page 34

    34 loc part code part name part description remark loc part code part name part description remark part list j212 85801060gy wire copper 1/0.6 tin coating j213 85801060gy wire copper 1/0.6 tin coating j214 85801060gy wire copper 1/0.6 tin coating j215 85801060gy wire copper 1/0.6 tin coating j216 85...

  • Page 35

    35 loc part code part name part description remark loc part code part name part description remark part list cc150 hcbk104kba c chip cera 50v x7r 0.1mf k 1608 cc151 hcbk104kba c chip cera 50v x7r 0.1mf k 1608 cc152 hcbk104kba c chip cera 50v x7r 0.1mf k 1608 cc153 hcbk104kba c chip cera 50v x7r 0.1m...

  • Page 36

    36 loc part code part name part description remark loc part code part name part description remark part list cc143 hcbk104kba c chip cera 50v x7r 0.1mf k 1608 cc144 hcbk103kba c chip cera 50v x7r 0.01mf k 1608 cc145 hcbk104kba c chip cera 50v x7r 0.1mf k 1608 cc146 hcbk103kba c chip cera 50v x7r 0.0...

  • Page 37

    37 loc part code part name part description remark loc part code part name part description remark part list rc323 hrft472jba r chip 1/10 4.7k ohm j 1608 rc324 hrft472jba r chip 1/10 4.7k ohm j 1608 zz310 ptu1mse133 pcb union manual as dua-3291fls-s ic01 1ts0p2238y ic unit r/receiver tsop2238ya1 jpa...

  • Page 38

    38 loc part code part name part description remark e02 4856310300 eye let bsr t0.2 (r1.6) e03 4856310300 eye let bsr t0.2 (r1.6) e04 4856310300 eye let bsr t0.2 (r1.6) e05 4856310300 eye let bsr t0.2 (r1.6) e06 4856310300 eye let bsr t0.2 (r1.6) e07 4856310300 eye let bsr t0.2 (r1.6) e08 4856310300 ...

  • Page 39

    39 loc part code part name part description remark j014 85801060gy wire copper 1/0.6 tin coating j015 85801060gy wire copper 1/0.6 tin coating j016 85801060gy wire copper 1/0.6 tin coating j017 85801060gy wire copper 1/0.6 tin coating j018 85801060gy wire copper 1/0.6 tin coating j019 85801060gy wir...

  • Page 40

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