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  4. DSN-9070
  5. Service Manual

Daewoo DSN-9070 Service Manual - 3. Block Diagram

Manual is about: Internet Settop Box

Summary of DSN-9070

  • Page 1

    S/m no. : sn500p-010 service manual internet settop box chassis : sn-500 oct. 1999 daewoo electronics co., ltd http : //svc.Dwe.Co.Kr model : dsn-9070 dsn-9071.

  • Page 2: Table of Contents

    Table of contents 1. Instruction manual ....................................................................................................................... 1 2. Specification.............................................................................................................................

  • Page 3: Instruction

    1 precautions read carefully through this manual to familiarize yourself with this high- quality “set-top box”. Make sure the rating of your household electricity supply matches that shown on the power adapter. Refer to this chapter and the "initial installation" chapter to help you install and adju...

  • Page 4: Introduction

    3 2 contents i ntroduction features _______________________ 3 package contents ________________ 4 name of parts ___________________ 5 c onnecting y our s ystem ___________ 8 i nitial s etup setting the network ______________ 9 web b rowsing surfing the internet ______________ 11 setting the browser ...

  • Page 5: Introduction

    1. Power on/off indicator indicates whether the set-top box is on or off. 2. Operating indicator flashes when the set-top box is connecting to your isp and when receiving new information. Remains lit while in use. 3. Smart card slot allows you to use a smart card when the technology becomes availabl...

  • Page 6: Introduction

    7 6 introduction -continued 1. Track-ball to move the pointer on the screen. 2. Click to put in practice something that you selected with the pointer. 3. Power button (green) to turn on the set-top box or turn off. * many buttons in the first row may not works, and the function of them may be change...

  • Page 7: Initial Set-Up

    9 initial set-up setting the network 8 connecting your tv, tel-line, printer when you turn on the set-top box, the page will appear. While initializing the set-top box, the progress bar will be shown at the bottom of screen until the initialization is finished. The left-side page in which you are as...

  • Page 8: Initial Set-Up

    11 surfing the internet 10 initial set-up -continued in the case of modem type, “network setup” screen will appear like left-side. Input the required information. Please refer to the below explanation. Ispto select the name of isp. Tel to type the telephone number of isp. Id to input the user id. Pa...

  • Page 9: Web Browsing

    13 12 web browsing -continued find u this “find” icon is used to look for a word in the current web-site. 1. Click on ‘find’ icon and then the following text box will appear at the bottom of the screen. 2. Type in the word that you want to look for in the current web-site and choose the options (ple...

  • Page 10: Web Browsing

    15 14 bookmark you can memorize more than 1,000 of your favorite web-sites, and also categorize those sites into 12 different categories (folders). So, you can visit the desired web-site by just clicking the name of the site memorized on each folder, without typing in the address of the site in the ...

  • Page 11: Web Browsing

    17 setting the printer screen & sound setup click the “screen & sound setup”, then the left-side page will appear. Adjust screen to set the screen position. Select soundto select the sound effect. Printer setup click the “printer setup” then the left-side page will appear. You can choose the printer...

  • Page 12: E-Mail

    19 e-mail 18 setting e-mail click the ‘e-mail’ icon at the right-bottom of screen, you will see this page which begins to check the received mail. After checking the mail, the left-side page will be shown. If you click on a mail, then it will be opened as below reply to compose the response. Forward...

  • Page 13: E-Mail

    20 address click this icon and memorize the mail addresses which you use frequently. Add to make a new mail address. Delete to delete a mail address.(first, you should choose the mail address which you want to delete.) edit to modify the name of mail address. (first, you should choose the mail addre...

  • Page 14: Other Functions

    23 22 terminal dc in/out (1) video out(1) audio (r/l) out (1) s-video out (1) a/s switch (1) printer port (1) external phone wire (1) smart card slot (1) dimensions 290mm x 215mm x 43mm (w x d x h) weight 1.25kg power requirements ac 230v power consumption 10w max. Accessories size aa batteries (2) ...

  • Page 15: 2. Specifications

    13 2. Specifications model name dsn-9070/9071 ¡Ú ¡Ú ¡Ú function main function internet, e-mail display type on tv (ntsc or pal) hardware ac adaptor input 110vac or 90~260vac (50§Ô /60§Ô ) dc input 6 vdc, 1500§Ì power consumption 15w under size(w x d x h) 290 x 208 x 40(mm) weight 1.25§¸ internal sid...

  • Page 16: 3. Block Diagram

    14 3. Block diagram.

  • Page 17

    15 4. Description of the circuit operation 1. Arm 7500fe part the circuit is divided into digital and analogue input/output parts around the arm 7500fe part. Two addresses and two data buses are basically served from the arm 7500fe part. - ra (dram row/column multiplexed addresses) uses 12 bits. - l...

  • Page 18

    16 3. Description of the circuit operation 7. Clock part a clock is needed for the main board of the internet set top box. Io clk(64§Ö ) mclk(56§Ö ) and vclk(25.18§Ö ) are supplied to the arm 7500fe, and xout(14.318§Ö ) is supplied to ch7001c. The clock doubling chip, ch9294, connected to crystal (1...

  • Page 19: 5. Trouble Shooting

    17 5. Trouble shooting 1. Contents 1) don’t turn on power led. 2) no function of wireless keyboard or remocon. 3) though it turn on the power led, no raster. 4) no color or raster with unstable sync. 5) prom booting 6) don’t progress booting 7) can’t connect isp 8) can’t hear sound effect and playin...

  • Page 20

    18 1) don’t turn on power led o.K check adapter output(6vdc) check reconnection i005 #40 s/b 5vdc check change the adapter i005 #40 #1, i025 #2(vcc) check ld001 (led) check sb5v and gnd, r088 zd001,d040 check/replace i025 #4 (high) check? I025 check/replace ld001(red) check/replace 2. No function of...

  • Page 21

    19 2) no function of wireless keyboard(or remocon) keyboard battery check ip001 #3 sb5v and ir pulse check battery change (aam *2) x004 waveform check sb5v repair and ip001 check /repalce i101 #165,#167, #168,#169 check x004(6mhz) waveform check/replace between i005 and i101, pattern check/repair ch...

  • Page 22

    20 3) though it turn on the power led, no raster. Video cable check x001, x003 waveform check connect correctly, change cable i019 #12, #18, #19 waveform check x001(64m), x003(14.318m) check/replace i101 rgb, h.V. Check i019 check/replace move to item 4 i012, i080~6 signal line check repair ic check...

  • Page 23

    21 4) no color or raster with unstable sync. I101 r.G.B. H.V. Check i022 #30 ntsc/pal check i101 check i022 #16(14.318mhz) check set display system correctly i019 check/replace i022 check/replace o.K o.K o.K n.G n.G n.G start.

  • Page 24

    22 5) prom booting 6) don’t progress booting i008,i009, i015,i016 connection check repair check /replace download new browser start o.K o.K n.G i008,i009, i015,i016 connection check repair check /replace download new browser modem/lan connection check connect correctly check /replace start o.K o.K n...

  • Page 25

    23 7) can’t connect isp tel line or lan line check isp or lan info. Check connect correctly or change ask isp or admin modem or lan card check change setup and try p006 (isa slot) check address, data line check set com2 port and irq3. Replace repair or replace repair download new browser start o.K o...

  • Page 26

    24 8) can’t hear sound effect and playing wav file audio connector check browser set up check connect correctly, change i020 in/out check set sound effect correctly i020 check/replace i101 check start n.G n.G n.G o.K o.K o.K.

  • Page 27

    25 9) can’t print printer power check printer connector check turn on printer browser set up check connect correctly change connector i013 in/out and i/o pin check set printer correctly i013 check/replace i/o line replace i101 check start o.K o.K o.K o.K n.G n.G n.G n.G.

  • Page 28: 5. Circuit Diagram

    26 5. Circuit diagram c 0 4 3 0 .0 1 u f c 0 4 1 0 .0 1 u f c 0 3 7 0 .0 1 u f c 0 3 5 0 .0 1 u f c 0 4 4 0 .0 1 u f r 0 5 0 7 .5 k r 0 3 4 4 .7 k r 0 7 1 1 0 k r 0 7 2 1 0 k r 0 5 7 1 0 k r 0 5 2 1 0 k r 0 5 1 1 0 k r 0 5 4 1 0 k r 0 5 8 1 0 k r 0 6 0 1 0 k r 0 5 3 1 0 k i1 0 1 c l - p s 7 5 0 0 f ...

  • Page 29

    27 5. Circuit diagram i0 1 0 a t 8 9 c 2 0 5 1 p 1 _ 0 1 2 r e s e t 1 p 1 _ 1 1 3 p 3 _0 * r x 2 p 1 _ 2 1 4 p 3 _1 * t x 3 p 1 _ 3 1 5 p 3 _2 * i0 6 p 1 _ 4 1 6 p 3 _3 * i1 7 p 1 _ 5 1 7 p 3 _4 * t 0 8 p 1 _ 6 1 8 p 3 _5 * t 1 9 p 1 _ 7 1 9 p 3 _7 1 1 x t a l 1 5 v c c 2 0 x t a l 2 4 g n d 1 0 r ...

  • Page 30

    28 5. Circuit diagram i0 9 9 s im m m o d u l e d r a m ( 3 2 b it d a t a , r a s 0 ,1 ) m a 0 1 2 m a 1 1 3 m a 2 1 4 m a 3 1 5 m a 4 1 6 m a 5 1 7 m a 6 1 8 m a 7 2 8 m a 8 3 1 m a 9 3 2 m a 1 0 1 9 m a 1 1 2 9 d 0 2 d 1 4 d 2 6 d 3 8 d 4 2 0 d 5 2 2 d 6 2 4 d 7 2 6 d 8 4 9 d 9 5 1 d 1 0 5 3 d 1 ...

  • Page 31

    29 5. Circuit diagram a c 0 1 4 0 .0 1 u f i0 1 4 7 4 h c 1 3 9 d _ 1 e 1 1 a 2 1 b 3 1 y 0 4 1 y 1 5 1 y 2 6 1 y 3 7 g n d 8 2 y 3 9 2 y 2 1 0 2 y 1 1 1 2 y 0 1 2 2 b 1 3 2 a 1 4 _ 2 e 1 5 v c c 1 6 i0 0 8 m b m 2 9 f 8 0 0 b - t s o p a 1 5 1 a 1 4 2 a 1 3 3 a 1 2 4 a 1 1 5 a 1 0 6 a 9 7 a 8 8 n ....

  • Page 32

    30 5. Circuit diagram r 08 1 3 60 r 08 2 7 5 r 08 3 7 5 b l 02 0 b l 01 9 r 0 7 9 7 5 b l 01 5 c 0 5 5 0 .1 u f c 0 54 0 .1 u f b l0 1 7 b l0 1 8 r 0 78 2. 4 k r 0 7 7 56 k r 0 75 2. 4 k r 0 7 6 56 k c 0 51 0 .0 0 1 uf c 0 46 0 .0 0 1 uf c 0 5 0 1 0 uf + c 0 4 7 1 0 uf + i0 2 0 c s 4 3 3 3 s d a t a...

  • Page 33

    31 5. Circuit diagram i0 1 3 7 4 h c 3 7 7 d d 1 3 q 1 2 d 2 4 q 2 5 d 3 7 q 3 6 d 4 8 q 4 9 g 1 d 5 1 3 c lk 1 1 q 5 12 d 6 14 q 6 1 5 d 7 1 7 q 7 1 6 d 8 18 q 8 19 g n d 10 vc c 2 0 c 0 2 9 0 .0 1 u f c 0 68 2 2 0 0 u f /1 6 v + c 06 9 0 .3 3 u f i0 2 5 p q 0 5 r f 2 1 v i 1 v o 2 gnd 3 on*off 4 r...

  • Page 34

    32 6. Exploded view (model name : dsn-9070, 9071) 12 13 14 9 4. 3 + mask front as. 6. 5 + 4 leg, spec plate, label serial 5. 4 + cabinet upper with 4 screws 3. 2 + modem with 1 machine screw 1. Cabinet bottom + main pcb as with 2 tapping screw * notes (assembling flow) 2. 1 + cover back as 6 4 1 2 3...

  • Page 35

    33 7. Packing view (model name : dsn-9070, 9071) track ball front 1 2 3 front 8 6 5 7 4 9 front 10 1 11 12 14 13 front 3. Accessories are changeble by request of buyer. Track ball side is to positioned at deep place of pad. 2. Direction the wireless keyboard as this ; 1. Let each accessory be locate...

  • Page 36

    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 fax : 82-32-510-7624 tel: 82-32-510-7630