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Service Manual
Colour Television
CHASSIS : CM-220N
Model : DTH-20D5FSN
DTH-21D4FSN
DTH-20D5FSN
SPECIFICATIONS
MODEL
ITEM
TV STANDARD
PAL-M/N
POWER INPUT
220V 50/60HZ
POWER CONSUMPTION
88W
TUNING SYSTEM
Frequency Synthesizer (FS) Tuning System
TV
CATV
TUNING RANGES
SOUND OUTPUT
5W + 5W
SPEAKER
8 ohm 5W X 2EA
ANTENNA INPUT IMPEDANCE
75 ohm Unbalanced
Font : Video, Audio, Earphone
AUXILIARY INPUT TERMINAL
Rear:Video, Audio,(R,L)
Picture IF Carrier Frequency : 45.75 MHZ
INTERMEDIATE FREQUENCIES Sound IF Carrier Frequency : 41.25 MHZ
Color Sub-Carrer Frequency : 3.579545 MHZ
REMOTE CONTROL
R-43A01
1) ICON MENU TYPE
2) 3-Language OSD
SPECIAL FUNCTIONS
3) WITH CAPTION
4) CH LABEL
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
S/M No. : TCM220NEF0
DTH-21D4FSN
DTH-20D5FSN
VHF(L) : CH2 ~ CH6
UHF(H) : CH7 ~ CH13
UHF
: CH14 ~ CH69
VHF(L) : 5A,A,B,A-5-A-1
CH2-CH6
VHF(H) : C-W+11
CH7-CH13
UHF
: W+12-W+84
May.2001
DTH-21D4FSN
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Summary of Contents for Daewoo DTH-20D5FSN
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Page 1: Service Manual
S/M No. : TCM220NEF0 Service Manual Colour Television CHASSIS : CM-220N Model : DTH-20D5FSN DTH-21D4FSN DTH-20D5FSN DTH-21D4FSN SPECIFICATIONS MODEL DTH-20D5FSN DTH-21D4FSN ITEM TV STANDARD PAL-M/N POWER INPUT 220V 50/60HZ POWER CONSUMPTION TUNING SYSTEM Frequency Synthesizer (FS) Tuning System VHF(L) : CH2 ~ CH6... -
Page 2: Table Of Contents
TABLE OF CONTENTS SPECIFICATIONS ............................. 2 CIRCUIT BLOCK KIAGRAM ........................3 ALIGNMENT INSTRUCTION ........................4 Your Remote Control ............................4 Service Mode Adjustment ........................... 5 Assembly Adjustment ............................6 SCHEMATIC DIAGRAM ........................... 10 PRINTED CIRCUIT BOARD ........................11 EXPLODED VIEW ............................. 12 SERVICE PARTS LIST .......................... -
Page 3: Specifications
SPECIFICATIONS CAUTION CM-220N MODEL DTH-21D4FSN DTH-20D5FSN ITEM TV STANDARD PAL-M/N POWER INPUT 220V 50/60HZ POWER CONSUMPTION TUNING SYSTEM Frequency Synthesizer (FS) Tuning System VHF(L) : CH2 ~ CH6 UHF(H) : CH7 ~ CH13 : CH14 ~ CH69 CATV VHF(L) : 5A,A,B,A-5-A-1... -
Page 4: Circuit Block Kiagram
CIRCUIT BLOCK DIAGRAM... -
Page 5: Alignment Instruction
ALIGNMENT INSTRUCTION CAUTION Your Remote Control 1. POWER Use this button to turn your TV on or off. 2. MUTE Use to turn the TV’s sound on and off. Use these buttons to change your TV’s volume, to activate selections in the menu system. Use these buttons to change your TV’s volume, to activate selections in the meny system,or to change audio and video settings. -
Page 6: Service Mode Adjustment
ALIGNMENT INSTRUCTIONS SERVICE MODE ADJUSTMENTS Follow the steps below whenever service adjustment is required. See Table- A and Table- B to determine if service adjustments are required. 1) How to enter the service mode using the user remote control. • Turn the set on. •... -
Page 7: Assembly Adjustment
ALIGNMENT INSTRUCTIONS Table-B DATA MODE ADJUSTMENT ITEMS REMARKS INITIAL RANGE Screen Adjustment Auto RF AGC Video Level (VIDEOL) Must be set to 7 RF AGC Delay (RFAGCD) 0~63 Align RF AGC threshold FM Level (FM.LEV) 0~31 Must be set to 20 AGC Point 3.75 Select AGC reference voltage... - Page 8 ALIGNMENT INSTRUCTIONS 2) FOCUS ADJUSTMENT • Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture details at high light condition. 3) RF AGC DELAY ADJUSTMENT (S5) • Receive a good local channel. •...
- Page 9 ALIGNMENT INSTRUCTIONS 4-3. Vertical Size Adjustment Select “V.SIZE” item, adjust “V.SIZE” data value to proper vertical size as follows. 5) WHITE BALANCE ADJUSTMENT (S8) Receive a good local channel. Enter the service mode and select service adjustment S8. You can see the OSD as shown in below. Using volume up or volume down, adjust service adjustment data of RD/GD/BD and RB/GB/BB until a good gray scale with normal whites is obtained.
- Page 10 ALIGNMENT INSTRUCTIONS Select Subbrightness item, adjust Subbrightness data value to obtain normal brightness level. Press the DISPLAY button to memorize the data. CONTRAST Fixed value = 10 TINT Fixed value = 27 COLOR Fixed value = 15 7) FACTORY OUTGOING MODE (S12 : FACT) If you select the S12, then the set becomes factory outgoing status.
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Page 11: Schematic Diagram
SCHEMATIC DIAGRAM - 10 -... -
Page 12: Printed Circuit Board
PRINTED CIRCUIT BOARD PCB MAIN - 11 -... -
Page 13: Exploded View
EXPLODED VIEW DTH-20D5FSN... - Page 14 EXPLODED VIEW DTH-21D4FSN...
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Page 15: Service Parts List
BAG P .E L.D.P .E T0.03X1300X1000 ZZ131 48519A5110 CRT GROUND NET 2001S-1015-1P ZZ132 58G0000146 COIL DEGAUSSING DC-20SF ZZ140 PTCACAD441 CABINET AS DTH-20D5FSN CRT1 4859631667 A48JLL91X50(P) M16 ® CRT1A 4856215402 WASHER RUBBER CR T2.0 CRT1B 4856013300 SCREW CRT FIXING 30X80 BK... - Page 16 SP01 4858310910 SPEAKER SP-5090F03 ® SP02 4858310910 SPEAKER SP-5090F03 ® ZZ290 PTMPMSD441 PCB MAIN MANUAL AS DTH-20D5FSN C403 CCYB2H103K C CERA 500V B 0.01MF K C404 CMYH3C662H C MYLAR 1.6KV BUP 6600PF H ® C406 CMYE2D514J C MYLAR 200V PU 0.51MF J ®...
- Page 17 X701 5XYR03276C CRYSTAL QUARTZ C-001R 32.768000KHZ 20PPM Z501 5PYXT4R5MB FILTER CERA XT 4.5MB ZZ200 PTMPJ0D441 PCB MAIN (RHU) AS DTH-20D5FSN C105 CEXF1C471V C ELECTRO 16V RSS 470MF (10X12.5)TP C310 CEXF1E102V C ELECTRO 25V RSS 1000MF (13X20) TP C410 CEXF2E100V C ELECTRO...
- Page 18 C ELECTRO 16V RSS 1000MF (10X20) TP C965 CCXB3D102K C CERA 2KV B 1000PF K (TAPPING) ZZ200 PTMPJBD441 PCB MAIN M-10 AS DTH-20D5FSN P601 485923172S CONN WAFER YW025-04 (STICK) R303 RS02Z129JS R M-OXIDE FILM 2W 1.2 OHM J SMALL R412...
- Page 19 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK C417 CCXB2H102K C CERA 500V B 1000PF K (TAPPING) C418 CMXM2A104J C MYLAR 100V 0.1MF J (TP) C420 CEXF1C220A C ELECTRO 16V RSM 22MF (5X7) C451 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP C452 CEXF1C221V C ELECTRO...
- Page 20 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK C682 CMXM2A224J C MYLAR 100V 0.22MF J C683 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP C684 CMXM2A224J C MYLAR 100V 0.22MF J C685 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP C686 CEXF1E470V C ELECTRO...
- Page 21 SW TACT THVH472GCA SW705 5S50101090 SW TACT THVH472GCA SW706 5S50101090 SW TACT THVH472GCA ZZ200 PTMPJAD441 PCB MAIN AXIAL AS DTH-20D5FSN A001 4859815092 PCB MAIN 330X246 C151 CCZF1H103Z C CERA 50V F 0.01MF Z C152 CCZF1H103Z C CERA 50V F 0.01MF Z...
- Page 22 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK C531 CZSL1H470J C CERA 50V SL 47PF J (AXIAL) C532 CZCH1H200J C CERA 50V CH 20PF J (AXIAL) C552 CCZB1H101K C CERA 50V B 100PF K (AXIAL) C553 CCZB1H101K C CERA 50V B 100PF K (AXIAL) C560 CCZF1H103Z...
- Page 23 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK C768 CCZB1H101K C CERA 50V B 100PF K (AXIAL) C780 CCZF1H103Z C CERA 50V F 0.01MF Z C798 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z C901 CCZB1H561K C CERA 50V B 560PF K C902 CCZB1H271K...
- Page 24 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK D803 DLT2A05G-- DIODE LT2A05G (TP) ® D804 DLT2A05G-- DIODE LT2A05G (TP) ® D805 D1N4937G-- DIODE 1N4937G (TAPPING) ® D808 D1N4937G-- DIODE 1N4937G (TAPPING) ® D812 DMTZJ5R6B- DIODE ZENER MTZJ 5.6B D822 DZY160---- DIODE ZENER...
- Page 25 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK J035 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J036 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J038 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J039 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J040 85801065GY WIRE COPPER...
- Page 26 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK J082 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J083 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J084 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J085 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J086 85801065GY WIRE COPPER...
- Page 27 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK J130 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J131 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J132 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J133 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J134 85801065GY WIRE COPPER...
- Page 28 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK L603 5CPZ101K02 COIL PEAKING 100UH K (AXIAL 3.5MM) L604 5MC0000100 COIL BEAD HC-3550 L605 5MC0000100 COIL BEAD HC-3550 L607 5MC0000100 COIL BEAD HC-3550 L651 5CPZ150K02 COIL PEAKING 15UH K (AXIAL 3.5MM) L701 5CPZ220K02 COIL PEAKING...
- Page 29 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK R510 RD-AZ821J- R CARBON FILM 1/6 820 OHM J R511 RD-4Z121J- R CARBON FILM 1/4 120 OHM J R512 RD-AZ391J- R CARBON FILM 1/6 390 OHM J R520 RD-AZ333J- R CARBON FILM 1/6 33K OHM J R530 RD-AZ561J-...
- Page 30 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK R661 RD-2Z271J- R CARBON FILM 1/2 270 OHM J R662 RD-2Z271J- R CARBON FILM 1/2 270 OHM J R665 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R691 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R692 RD-AZ302J-...
- Page 31 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK R784 RD-AZ514J- R CARBON FILM 1/6 510K OHM J R785 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R786 RD-4Z102J- R CARBON FILM 1/4 1K OHM J R787 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R788 RD-AZ472J-...
- Page 32 SERVICE PARTS LIST PART CODE PART NAME PART DESCRIPTION REMARK R908 RD-AZ201J- R CARBON FILM 1/6 200 OHM J R909 RD-AZ201J- R CARBON FILM 1/6 200 OHM J R911 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R912 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R913 RD-AZ101J-...
- Page 33 CM-220N Different Part List DTH-20D4FSSN DTH-20D5FSN DTH-21D4FSN NO Part_Loc Part_Name PHILIPS Remark Part_Code Part_Code part_Code Part_Desc Part_Desc Part_Desc R303 R Metal_Oxide RS02Z129JS RS02Z129JS RS02Z109JS Vertical_Output 2W 1.2 OHM J SMALL 2W 1.2 OHM J SMALL 2W 1.0 OHM J SMALL...
- Page 34 DTH-20D4FSSN DTH-20D5FSN DTH-21D4FSN NO Part_Loc Part_Name PHILIPS Remark Part_Code Part_Code part_Code Part_Desc Part_Desc Part_Desc ZZ131 Crt_Ground_Net 48519A5110 48519A5110 48519A5310 2001S-1015-1P 2001S-1015-1P 2101S-1015-1P Z132 Coil_Degaussing 58G0000146 58G0000146 58G0000147 DC-20SF DC-20SF DC-21SF CRT1 4859631667 4859631667 4859625560 A48JLL91X50 (P) M16 A48JLL91X50 (P) M16...
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Page 35: Troubleshooting Guide
APPENDIX TROUBLESHOOTING GUIDE 1.NO POWER FROM FBT 10V Check R416 Check F801(250V 4A) D801(LT2A05G) RLY1 D801 F801 R801 PWC1 L801 Check R801(10W 3.2) Q804 TO I501 #34 TMS-3541T4 T801 C819 Check D807 Voltage 133V R814 C814 133V C804 Check 450V C820 waveform 150uF... -
Page 36: No Picture
APPENDIX TROUBLESHOOTING GUIDE 2. NO PICTURE NG : GO to the figure © Check the waveform of I101 #46 OK : Go the figure... -
Page 37: No Sound
APPENDIX TROUBLESHOOTING GUIDE 3. NO SOUND NG : GO to the figure Check audio output signal of I101 #1 OK : Go the figure... -
Page 38: Ch Don't Stop
APPENDIX TROUBLESHOOTING GUIDE 4. CH DON’T STOP NG : Loss of signal or weak signal Check the input signal conditions OK : Go the figure... -
Page 39: No Color
APPENDIX TROUBLESHOOTING GUIDE 5. NO COLOR 6. NO VERTICAL DEFLECTION... -
Page 40: No On-Screen Display
APPENDIX TROUBLESHOOTING GUIDE 7. NO ON-SCREEN DISPLAY 8. REMOTE CONTROL DOES NOT OPERATE... - Page 41 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail :djkoo@web.dwe.co.kr TEL : 82-2-360-7806 FAX : 82-2-360-7877...