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Daewoo AKD-0275 Series Service Manual

Manual is about: Car audio basic RDS

Summary of AKD-0275 Series

  • Page 1

    Service manual car audio basic, rds s/m no:akd0275ef0 model : akd-0275 series akd-0285 series daewoo electronics co., ltd http://svc.Dwe.Co.Kr jan. 2000 4-channel high power (35w x 4ch) electronic tuning electronic volume/bass/treble/balance/fader controls auto memory/preset scan repeat/random/intro...

  • Page 2: Table of Contents

    Table of contents 1. Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Line drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 3: 1. Product Specifications

    - 1 - 1. Product specifications 1-1. Technical specification power requirements : dc 12.0v / rated : 14.4v (usable : 10.8 ~15.6v) negative ground current consumption : 10a maximum dimension (w x h x d) : body 178 x 50 x 165 mm : escutcheon 188 x 58 x 15 mm weight (net) : 2.7 kg design and specificat...

  • Page 4: 2. Line Drawing

    2. Line drawing without rds function : basic with rds function : rds 2-1. Akd-0275 front side - 2 -.

  • Page 5: 2-2. Akd-0285 Front Side

    Line drawing 2-2. Akd-0285 front side - 3 - without rds function : basic with rds function : rds.

  • Page 6

    Line drawing - 4 - 2-3. Akd-0275/akd-0285 rear side.

  • Page 7: 3. Adjustments

    3. Adjustments - 5 - 3-1. Connections equipments.

  • Page 8

    Adjustments 3-2. Adjustment locations in tuner modules - 6 -.

  • Page 9

    Adjustments 3-3. Am (mw/lw) adjustment - 7 - step 1 band covering rf-tracking figure 1 figure 2 figure 2 figure 1 figure 2 522khz 60dbu mod 1000hz 30% 603khz 30dbu mod 1000hz 30% 1404khz 30dbu mod 1000hz 30% 144khz 60dbu mod 1000hz 30% 220khz 60dbu mod 1000hz 30% 522khz 603khz 1404khz 144khz 220khz ...

  • Page 10

    Adjustments 3-4. Fm adjustment - 8 - step 1 if (zero volt) rds receiving estimation level figure 3 figure 4 figure 5 figure 5 98.1mhz 60dbuv no modulation 98.1mhz 45dbuv mod. 1khz 30% mono 98.1mhz 60dbuv mod. 1khz 30% stereo left at right ch. 98.1mhz 35dbuv mod. 1khz 30% stereo left at right ch. 98....

  • Page 11

    4. Schematic diagram 4-1. Basic series akd-0275/0285 - 9 - size:a3.

  • Page 12

    Schematic diagram - 10 - 4-2. Rds series akd-0275/0285 size:a3.

  • Page 13

    Schematic diagram - 11 - 4-3. Cdp circuit for akd-0275/0285 (dcm-200/201) size:a3.

  • Page 14

    5. Parts location on p.C. Board 5-1. Pcb main : ak d -0275/0285 parts side - 12 -.

  • Page 15

    Parts location on p.C. Board - 13 - bottom side.

  • Page 16

    Parts side bottom side parts location on p.C. Board akd-0275 basic - 14 - 5-2. Pcb front.

  • Page 17

    Parts side bottom side parts location on p.C. Board akd-0275 rds - 15 -.

  • Page 18

    Parts location on p.C. Board - 16 - akd-0285 basic parts side bottom side.

  • Page 19

    Parts location on p.C. Board - 17 - akd-0285 rds parts side bottom side.

  • Page 20

    Parts location on p.C. Board - 18 - 5-3. Pcb sub parts side bottom side.

  • Page 21

    6. Overall exploded view & parts list - 19 - 6-1. Akd-0275 basic & rds size:a3.

  • Page 22

    Overall exploded view & parts list - 20 - 6-2. Akd-0285 basic & rds size:a3.

  • Page 23

    7. Deck mechanism exploded view & parts list - 21 - size:a3.

  • Page 24

    Deck mechanism exploded view & parts list sub assy parts list dcm-201 - 22 - no part name chassis side total assy chassis side assy lock plate r assy washer cut d4xd2xt0.25 moving plate r assy spg moving plate chassis gear total assy chassis gear assy motor loading gear load motor connector assy 2p ...

  • Page 25

    Deck mechanism exploded view & parts list - 23 - no part name gear sled screw slider rack spg sled insert screw machine pan m1.7x3 holder feed motor gear center motor feed gear feed motor screw machine pan m2x5 sw screw machine pan m2x3 plate spg screw tapping pan t2s m2x4 motor spindle turn table s...

  • Page 26

    Deck mechanism exploded view & parts list - 24 - no part name gear relay 2 gear relay 1 washer cut d6xd2.6xt0.25 washer cut d4xd1.6xt0.25 roller bush bracket door screw taptite spl m2x3.5 chassis main chassis gear total assy gear double screw taptite pan m2x3.5 sensor pcb assy screw taptite spl m2x3...

  • Page 27: 8. Parts List

    8. Parts list - 25 - main section location code name 97t65918ma 97t62e7213 97t6221000 97t6220900 dlt4h11g41 drl203---- 12bs2366k2 12bs2366k3 12bs2362v0 1bu1924f-- 1saa6579t- 124lc16bsq 1lc75371m- 1tda8567q- 1k1a7809p- 97t6366900 5lc301pa18 97t65918fl 97t82l2we4 97t82l1we4 tktd2058y- tktb1366y- rv141...

  • Page 28

    Parts list - 26 - location code name tzra101m-- tz2sd1862r tzta1267y- tz2sb1240r tzrc231m-- 5xjx4r500e tzrc231m-- tztc3199y- tr tr tr tr tr crystal quartz crystal quartz tr description kra101m(auto) 2sd1862r auto kta1267y tapping 2sb1240r krc231m(kec) 4.5mhz 12pf 49/s hc-49/u 4.332mhz (rds) ktc-3199...

  • Page 29

    Parts list - 27 - buyer code name 97t8858400 97t8853100 97t8856500 97t8846000 97t8853200 97t8856500 97t8856500 97t8858300 97t8854300 conn as conn as conn as conn as conn as conn as conn as conn as conn as description sk20p+1so16p interconti iso8p 300 8pstrip/tube sk20p+iso16p adapter j8p20(i/p) 280 ...

  • Page 30: 9. Function of Micom Ic

    9. Function of micom ic 9-1. Pin configuration - 28 -.

  • Page 31

    Function of micom ic 9-2. Pin descriptions - 29 - pin 1 80 78 77 71 76 73,31 75 74 72 70 69 68 67 79 2 12 11 55 pin name xin xout eo1 eo2 eo3 vss vdd fmin amin subpd hctr lctr sns_ hold_ test1 test2 pe2 pe3 int1 description connection to 4.5 mhz crystal output compaired with phase if local oscillati...

  • Page 32

    Function of micom ic - 30 - pin 46 47 38 44 60 59 37 65 61 45 48 16 15 66 64 40 pin name pm2 pm1 lamp pn0/beep pj0 pj1 po3 ph1/adi1 pi1/adi5 pm3 pm0 pd2 pd3 ph0/adi0 ph2/adi2 po0 description tuner mute port. When tuning, output is high then mute is on. (seek, when sd check) audio mute port, active h...

  • Page 33

    Function of micom ic - 31 - pin 6 36 14 56 57 58 39 49 50 52 7 8 9 10 3 4 5 pin name pg0 pp0 pe0 int0 pj3 pj2 po1 pl3 pl2 pl0 pf3 pf2 pf1 pf0 pg3 pg2 pg1 description detachable on/off input port contact high separate low waring led output port. 1 : 3 to turn on and off led by cycle of 1 sec. Wireles...

  • Page 34

    Function of micom ic - 32 - pin 27 28 29 30 23 24 25 26 53 34 35 51 pin name pa3 pa2 pa1 pa0 pb3 pb2 pb1 pb0 p-ejtkey pp2 pp1 pl1 description option diode matrix input option diode matrix output cdp disc eject key input port disc in no disc cdc_sel l h cdp_sel h l cdp disc in check input (sensor2) d...

  • Page 35: 10. Ic Block Diagram

    10. Ic block diagram 10-1. Lc75854e (ic lcd driver) - 33 -.

  • Page 36

    Ic block diagram 10-2. Bu1924f / saa6579t (ic rds demodulator) - 34 -.

  • Page 37

    Ic block diagram 10-3. Tda8567q (ic audio power) - 35 -.

  • Page 38

    Ic block diagram 10-4. Lc75371m (ic evr) - 36 -.

  • Page 39

    Ic block diagram 10-5. 24lc16b (ic eeprom) - 37 -.

  • Page 40: 11. Liquid Crystal Display

    Pad no. Com1 com2 com3 com3 -- -- am lw 1b.C 2d 2h 2c 3d 3h 3c p3 4e 4d intro disc 5d rpt aut 6d track mute 7d -- pm -- com2 -- i1 mw 1a 2e 2g 2b 3e 3g 3b p2 4f 4h 4c 5e 5g 5c 6e 6g 6c 7e 7g 7c ii2 -- -- com1 fm loc loud 2f 2a rdm 3f 3a k p1 4a 4g 4b 5f 5a 5b 6f 6a 6b 7f 7a 7b s1 1 2 3 4 5 6 7 8 9 1...

  • Page 41

    Liquid crystal display 11-2. Akd-0275/0285 rds - 39 - col1 col4 ic no lcd no. Com1 com2 com3 com4 39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 col3 9b 9h 9a rpt 8b 8h 8a rdm 7b 7h 7a col2 6b 6h mtl 9i 9g 9o 9f 8i 8g 8o 8f 7i 7g 7o 7f 6i 6g ams 9c 9k 9l 9n 8c 8k 8l 8n 7c 7k 7l 7n 6c 6k tape in intro 9d 9m ...

  • Page 42

    12. Output connector descriptions akd-0275/0285 basic & rds - 40 - 1 yellow back-up(+12) right front speaker - right front speaker + left rear speaker - left rear speaker + no connection line out (right) line out (left) ground right rear speaker - right rear speaker + left front speaker - left front...

  • Page 43: 13. How To Install

    13. How to install - 41 - note - use only the supplied mounting hardwares for safe and secure installation. - please consult your nearest dealer if you get any problem with installation. Holder - insert the holder into the car radio slot. Fasten the holder by pulling and bending the tabs which are l...

  • Page 44: Detaching The Front Panel

    How to install - 42 - detaching the front panel 1. Press the release knob to open up panel. 2. Holding the middle upper side of the panel, pull it straight out towards the arrow direction.(see the figure) 3. The red lamp blinks to tell you that the front panel has been detached.(it could be stolen) ...

  • Page 45: Maintenance and Precautions

    How to install - 43 - maintenance and precautions fm car antenna when tuning in fm stations while the vehicle is moving, the vehicle will pass through changing signal conditions ranging from strong signals near broadcast stations to extremely weak signals. If any fm antenna is not used, the sensitiv...

  • Page 46

    Daewoo electronics co., ltd 686, ahyeon-dong mapo-gu seoul, korea c.P.O. Box 8003 seoul, korea telex : dwelec k28177-8 cable : “daewooelec” e-mail : g7f00e@web.Dwe.Co.Kr tel : 82-2- 360 -7 799 fax : 82-2- 360 -7 877 edited by mc. Cem.