Service manual

ManualsBrandsDaewoo ManualsDVD RecorderDG-R521

Service Manual

TV / DVD Combination

CHASSIS : CN-090

Model : DDQ-20L6SC

S/M No. : TCN090BEF0

July. 2002

DAEWOO ELECTRONICE CO., LTD

http://svc.dwe.co.kr

MODEL DDQ-20L6

TV STANDARD NTSC-M

POWER INPUT AC 120V 60Hz

POWER CONSUMPTION 100W

TUNING RANGES Frequency Synthesizer(FS) Tuning System

TV VHF(L) : CH2-CH6

UHF(H) : CH7-CH13

UHF : CH14-CH69

CATV VHF(L) : 5A, A, B, A-5-A-1

CH2-CH6

VHF(H) : C-W+11

CH7-CH13

UHF : W+12-W+84

SOUND OUTPUT 3W + 3W

SPEAKER 8ohm 3W(NORNAL 3W, MAX 5W) x 2EA

ANTENNA INPUT IMPEDANCE 75ohm Unbalanced

AUXILIARY INPUT TERMINAL REAR PART : S-VHS

VIDEO, AUDIO(L,R)

SIDE PART : VIDEO, AUDIO(L,R)

AUXILIARY OUTPUT TERMINAL REAR PART : VIDEO, AUDIO(L,R)

COAXIAL DIGITAL AUDIO

SIDE PART : EARPHONE

INTERMEDIATE FREQUENCIES PICTURE IF CARRIER FREQUENCY : 45.75MHz

SOUND IF CARRIER FREQUENCY : 41.25MHz

COLOR SUB-CARRIER FREQUENCY : 42.17MHz

REMOTE CONTROL R-52A01

SPECIAL FUNCTION 1) 3-LANGUAGE

2) WITH CAPTION

3) CH LABEL

4) V-CHIP

5) DYNAMIC SOUND

6) SURROUND

7) WAKE-UP/OFF TIMER

8) SLEEP TIMER

9) POWER RESTORE

10) COAXIAL DIGITAL AUDIO OUT

11) EARPHONE

Summary of content (41 pages)

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S/M No.
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TABLE OF CONTENTS 1. SAFETY INSTRUCTION ................................................................................................................. 2 2. SPECIFICATIONS ........................................................................................................................... 4 3. CIRCUIT BLOCK DIAGRAM ........................................................................................................... 5 4. ALIGNMENT INSTRUCTIONS .............................................
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1. SAFETY INSTRUCTION PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS CAUTION : Do not attempt to modify this product in any way. Unau- GRAPHIC SYMBOLS : thorized modifications will not only void the warranty, but may lead to The lightning flash with arrowhead symbol,within an equilateral triangle, is intended to alert the your being liable for any resulting property damage or user injury.
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PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS SUBJECT : IMPLOSION 1. All direct viewed picture tubes are equipped with an integral implosion protection system, but care should be taken to avoid damage during installation. Avoid scratching the tube. If scratched, replace it. 2. Use only recommended factory replacement tubes. SUBJECT : TIPS ON PROPER INSTALLATION 1.
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2.
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-5- AC-IN 120V 60Hz D-Audio Out V V A V A A V DVD Ou In2 In1 Y, c b , c r Y, c b , c r L, R 8V In3 3.3V 2.
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4. ALIGNMENT INSTRUCTIONS 4-1. REMOTE CONTROL (R-52A01) POWER button If you press the ON/OFF button in the front part of this product, power is on. DISPLAY button Operating status and MENU are displayed in a screen. SLEEP button You can set automatic POWER OFF. INPUT TV/CABLE INPUT button You can select input mode(TV -> AV1 -> AV2 -> DVD). TV/CABLE button You can select air or cable. NUMBER button You can enter the relevant number directly or select a desired channel.
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ALIGNMENT INSTRUCTIONS PAUSE/STEP button Pause screen and step screen are displayed while playing and pausing respectively. PLAY button F.R/STEP or F.F/STEP button You can search screen while playing back or forward. OPEN/CLOSE REPEAT T/C A-B SETUP CLEAR TITLE SUB-TITLE ANGLE ZOOM RANDOM PROGRAM DISC TRAY OPEN/CLOSE button T/C button You move into REPEAT mode whenever you press this button. A-B button You can play the given sections repeatedly. SETUP button You can set the DVD player.
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ALIGNMENT INSTRUCTIONS 4-2. SERVICE MODE ADJUSTMENTS Follow the steps below whenever service adjustment is required. 1) How to enter the service mode using the user remote control -. Turn the set on. -. Direct the remote control to the reception window of TV. -. Push buttons of remote control in sequence as follows. 1 ——> MUTE ——> DISPLAY ——> MUTE -. Then, the screen will appear as follows. S2 S5 S6 S8 S9 S12 S7 SCRN IFC GEO W/B DP FACT PTRN -.
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ALIGNMENT INSTRUCTIONS 4-3. ASSEMBLY ADJUSTMENTS 1) SCREEN ADJUSTMENT(S2) -. Enter the service mode and select service adjustment S2. -. You can see the one horizontal line on the screen. -. Adjust the Screen Control Volume(located on FBT) so that the horizontal line onscreen may be disappeared. -. Press S2 button again to make the screen normal condition. < CAUTION > IN THE SCREEN ADJUSTMENT MODE, DON’T PRESS OTHER BUTTONS EXCEPT S2 BUTTON. 2) FOCUS ADJUSTMENT -.
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5.
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SCHEMATIC DIAGRAM 5-2 POWER CIRCUIT DIAGRAM -11-
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6.
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7. ELECTRICAL PARTS LIST CAUTION " " R " is a safety patt, so it must be used the same part. " is a recommendable part for essential stock. LOC PARTS CODE TRANSMITTER REMOCON R-52A01 (AAA) I202 1MM1111XS- IC SWITCH MM1111XS ACCESSORY AS DDQ-21L6SC I203 1TDA9183P- IC COMBFILTER TDA9183P 48586090E1 MANUAL INSTRUCTION English I501 1LA76837-- IC LA76837 4858213800 BAG INSTRUCTION L.D.P.E T0.
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ELECTRICAL PARTS LIST PART NAME PART DESCRIPTION CC231 HCQK101JCA LOC PARTS CODE PARTS NAME C CHIP CERA DESCRIPTION 50V CH 100PF J 2012 REMARK RC724 HRFT223JCA LOC PARTS CODE R CHIP 1/10 22K OHM J 2012 CC232 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 RC726 HRFT223JCA R CHIP 1/10 22K OHM J 2012 CC233 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 RC728 HRFT223JCA R CHIP 1/10 22K OHM J 2012 CC234 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 RC730 HRFT223JCA R CHIP 1/10 22K OHM J 2012 C
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ELECTRICAL PARTS LIST PARTS CODE PART NAME PART DESCRIPTION PARTS CODE PART NAME PART DESCRIPTION C215 LOC CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP REMARK C641 LOC CMXM2A103J C MYLAR 100V 0.01MF J (TP) C220 CEXF1C470V C ELECTRO 16V RSS 47MF (5X11) TP C642 CEXF1H229V C ELECTRO 50V RSS 2.2MF (5X11) TP C221 CMXM2A104J C MYLAR 100V 0.
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ELECTRICAL PARTS LIST PARTS CODE PART NAME PART DESCRIPTION PARTS CODE PART NAME PART DESCRIPTION D604 LOC DUZ5R1B--- DIODE ZENER UZ-5.1B REMARK R292 LOC RD-4Z111J- R CARBON FILM 1/4 110 OHM J D605 D1N4148--- DIODE 1N4148 (TAPPING) R294 RD-AZ223J- R CARBON FILM 1/6 22K OHM J D614 DUZ5R6BM-- DIODE ZENER UZ-5.6BM R297 RD-AZ102J- R CARBON FILM 1/6 1K OHM J D615 DUZ5R6BM-- DIODE ZENER UZ-5.
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ELECTRICAL PARTS LIST PARTS CODE PART NAME PART DESCRIPTION PARTS CODE PART NAME PART DESCRIPTION R701 LOC RD-AZ182J- R CARBON FILM 1/6 1.8K OHM J REMARK R796 LOC RD-AZ103J- R CARBON FILM 1/6 10K OHM J R702 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J R797 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R703 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J ZZ300 PTPWMSJ957 PCB POWER MANUAL AS DDQ-21L6FC R704 RD-AZ912J- R CARBON FILM 1/6 9.
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ELECTRICAL PARTS LIST PARTS CODE PART NAME PART DESCRIPTION L801 LOC 5PLF28A2-- FILTER LINE LF-28A2 REMARK C893 LOC M231 4852328701 PARTS CODE PART NAME PART DESCRIPTION CEXF1C102V C ELECTRO 16V RSS 1000MF (10X20) TP PANEL AV ABS GY 21L6 C894 CEXF1E102V C ELECTRO 25V RSS 1000MF (13X20) TP M231A 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN ZZ200 PTPWJBJ957 PCB POWER M-10 AS DDQ-21L6FC M352 4853535500 HOLDER CORD NYLON 66 10 2TM18006BE TAPE MASKING 6.
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ELECTRICAL PARTS LIST PARTS CODE PART NAME PART DESCRIPTION C809 LOC CMXM2A563J C MYLAR 100V 0.056MF J (TP) REMARK D815 LOC PARTS CODE PART NAME PART DESCRIPTION DUZ6R2BM-- DIODE ZENER UZ-6.2BM C812 CEXF1H229V C ELECTRO 50V RSS 2.
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ELECTRICAL PARTS LIST LOC R830 PARTS CODE PART NAME PART DESCRIPTION PARTS CODE PART NAME PART DESCRIPTION RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J REMARK R914 LOC RD-AZ561J- R CARBON FILM 1/6 560 OHM J R831B RD-2Z470J- R CARBON FILM 1/2 47 OHM J R915 RD-AZ133J- R CARBON FILM 1/6 13K OHM J R836 RD-AZ154J- R CARBON FILM 1/6 150K OHM J R916 RD-AZ122J- R CARBON FILM 1/6 1.
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7.
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PRINTED CIRCUIT BOARD 7-2 PCB POWER -22-
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9. IC DESCRIPTION(U-COM : I701) 9-1.
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IC DESCRIPTION(U-COM : I701) 9-2.
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IC DESCRIPTION(U-COM : I701) PIN No 32 33 35 PIN NAME P71/INT1 P72/INT2 /T0IN P73/INT3 /T0IN P00 36 P01 DVD LED(H) O 37 38 P02 P03 SW-3 MSP RESET(H) O O 39 P04 H-OUT(H) O 40 P05 A-MUTE(H) O 41 P06 DG-ON(H) O 42 P07 POW-ON(H) O 34 TYPE SW-2 SJ ID(H) I/O O I REMOCON IN I SB LED(H) O DISCRIPTION Input Select control Signal Check Input Signal in S-VHS JACK Active HIGH REMOCON CONTROL Signal Input When Stand-by MODE When ON Timer Set When NO V-Sync.
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10.
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11.
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TROUBLE SHOOTING GUIDE (1) NO POWER F801(Fuse) CHECK N Y D802 CHECK N D802 CHKECK/CHANGE Y I800 #6-7 ohm test (moreX100Ω) Y I800 CHANGE Fuse CHANGE I800 #5 Voltage CHECK N Y D802,R821,C804 CHKECK/CHANGE I800 #7 Waveform CHECK R809 CHECK/CHANGE Y D821 Voltage CHECK Y I701, RLY1 CHECK/CHANGE -28- N I810 CHKECK/CHANGE
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TROUBLE SHOOTING GUIDE (2) NO DEGAUSSING OPERATING Coil Connection CHECK N Y Connection check Q802 Operating CHECK? N Y R802 CHECK ( 3 ohm ) Q802 relation circuit check/CHANGE N Y PW501 #5 PIN CHECK R802 CHKECK/CHANGE 1701 #41 PIN CHKECK/CHANGE N Y DIE-GAUSSING COIL CHANGE -29-
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TROUBLE SHOOTING GUIDE (3) NO SEARCHING CHANNEL U101 Voltage CHECK N Tuner B+ Voltage CHECK N SDA, SCL Circuit CHECK Y SDA,SCL Operating CHECK Y U101 AGC Voltage CHECK N Y Service DATA CHECK N Service DATA Check/Setup U101 CHANGE -30-
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TROUBLE SHOOTING GUIDE (4) NO INPUTMODE CHANGE I201, I202 Voltage CHECK N B+ Voltage CHECK Y INPUT signal CHECK N signal circuit CHECK N I201, I202 CHECK/CHANGE Y I201 OUTPUT #3 signal CHECK Y U101 (Tuner) Voltage CHECK N I201, I202 SW CHECK Y I701 #31,#32,#37 CHECK/CHANGE I501 CHECK/CHANGE -31-
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TROUBLE SHOOTING GUIDE (5) NO OSD I701 #22,23, 24 OUTPUT CHECK N I701 #10,11 Oscilation CHECK N Y #10,11 relation Circuit CHECK/CHANGE I701 #25 OUTPUT CHECK N OSD BL circuit CHECK N OSD Gain CHECK Y I501 #14,15, 16,17 INPUT CHECK -32- Y Service DATA CHECK/CHANGE
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TROUBLE SHOOTING GUIDE (6) NO REMOCON OPERATING REMOCON Battery CHECK N Battery CHANGE N I704 B+ (#2) CHECK/CHANGE Y I704 #1 OUTPUT CHECK Y I701 #34 OUTPUT waveform CHECK Relation circuit CHECK N Y I701 CHECK/CHANGE -33-
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TROUBLE SHOOTING GUIDE (7) NO PICTURE T402 Operating CHECK Y (7-1) N (1) N I501 #27 waveform check N T402 Voltage CHECK Y Q401 waveform CHECK Y N DY CONNECTION CHECK H-DRV relation circuit CHECK Y I501 CHECK/CHANGE N I501 #25 Voltage CHECK N Y Q402 CHECK/CHANGE Y I502 Relation circuit CHECK DY CHECK/CHANGE (7-1) D890 relation circuit CHECK N P902 #1 Voltage check Y I501 #32 Voltage CHECK N P902 #4 waveform check Y SCT1,CRT CHECK/CHANGE -34-
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TROUBLE SHOOTING GUIDE (8) VERTICAL DEFLECTION PART I501 #23 Drive Pulse CHECK N I501 #23relation circuit check N D380 relation circuit CHECK N DY CHECK/CHANGE N C302 CHECK/CHANGE N Q704 relation circuit CHECK N Relation circuit CHECK Y I301 B+ Voltage Check Y DY Connection CHECK Y P801 #5 Pulse waveform check Y Q704 waveform CHECK Y I701 #20 waveform CHECK Y I701 CHECK/CHANGE -35-
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TROUBLE SHOOTING GUIDE (9) PICTURE PART NO RF PICTURE I501 #46 waveform check N #46 relation circuit CHECK N MOVE (4) (Q207 relation circuit) N I701 relation circuit CHECK N JP503/PW201 CHECK Y I501 #42 waveform check Y I501 #17 signal CHECK Y Q902-Q907 CHECK/CHANGE NO AV PICTURE I201 #5,7 signal CHECK Y MOVE(4) -36-
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TROUBLE SHOOTING GUIDE (10) COLOR SIGNAL PART I203 #16 waveform check N I203 B+ #6 check Y Y I502 CHECK/CHANGE I501 #32 waveform check N #32 relation circuit CHECK N Service data CHECK/SETUP Y Service Color CHECK Y I501 CHECK/CHANGE -37- N I804 relation circuit check/change
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TROUBLE SHOOTING GUIDE (11) SOUND PART I601 #24,25 signal check N Y I601 #16 Voltage5V check N I804 output Level (6V) check N I701 CHECK/CHANGE N I501 CHECK/CHANGE Y I601 #7,8 signal CHECK Y I601 #47 SIF signal check Y I601 CHECK/CHANGE I602 out signal #1, 14 check N I602 CHECK/CHANGE Y MOVE(9) -38-
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TROUBLE SHOOTING GUIDE (12) NO DVD OPERATING NO DVD OPERATING PA890 wire CHECK N WIRE CHANGE Y PW590,591 Connecntion CHECK N CABLE CHANGE N MODULE CHANGE N DVD MODULE CHANGE Y DVD MODULE CHECK Y I202 #7 signal CHECK Y Relation circuit CHECK -39-
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