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S/M No. : TCM220MEF0
Service Manual
Color Television
CHASSIS : CM-220B
Model : DTH-20D5FS
DTH-21D4FS
DTH-20D5FS DTH-21D4FS
SPECIFICATIONS
MODEL
DTH-20D5FS DTH-2104FS
ITEM
TV STANDARD PAL-M/N
POWER INPUT 220V 50/60 HZ
POWER CONSUMPTION 88W
TUNING SYSTEM Frequency Synthesizer (FS) Tuning System
TV VHF(L) : CH 2 ~ CH 6
UHF(H) : CH 7 ~ CH 13
UHF : CH 14 ~ CH 69
CATV VHF(L) : 5A, A ,B, A-5 - A-1
TUNING RANGES
CH 2 - CH 6
VHF(H) : C - W +11
CH 7 - CH 13
UHF : W+12 - W +84
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 Sep. 2000
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
EXPLODED VIEW......................................................................................................... 11
PRINTED CIRCUIT BOARD ......................................................................................... 13
SERVICE PARTS LIST................................................................................................. 14
TROUBLE SHOOTING GUIDE..................................................................................... 32
1. No Poweer ............................................................................................................................. 32
2. No Picture .............................................................................................................................. 33
3. No Sound............................................................................................................................... 34
4. CH Don' Stop........................................................................................................................ 35
t
5. No Color................................................................................................................................. 36
6. No Vertical Deflection ............................................................................................................ 36
7. No On-Screen Display ........................................................................................................... 37
8. Remote ControlDoes Not Operate......................................................................................... 37
1
SPECIFICATIONS
CM-220B
MODEL
DTH-20D5FS DTH-21D4FS
ITEM
TV STANDARD PAL-M/N
POWER INPUT 220V 50/60HZ
POWER CONSUMPTION 88W
TUNING SYSTEM Frequency Synthesizer (FS) Tuning System
TV VHF(L) : CH 2 ~ CH 6
UHF(H) : CH 7 ~ CH 13
UHF : CH 14 ~ CH 69
CATV VHF(L) : 5A, A, B, A-5 - A-1
TUNING RANGES
CH 2 - CH 6
VHF(H) : C - W + 11
CH 7 - CH 13
UHF : W + 12 - W + 84
SOUND OUTPUT 5W + 5W
SPEAKER 8 ohm 5W x 2EA
ANTENNA INPUT IMPEDANCE 75 ohm Unbalanced
Front : Video, Audio, Earphone
AUXILIARY INPUT TERMINAL
Rear: Video, Audio, (R,L)
Picture IF Carrier Frequency : 45.75 MHZ
INTERMEDIATE FREQUEN-
Sound IF Carrier Frequency : 41.25 MHZ
CIES
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
2
CIRCUIT BLOCK DIAGRAM
A/V IN 1 A/V IN 2
V A H V L R 9V 5V
RF EARPHONE
5V 33V
SOUND IC
SOUND
TUNER MSP3430G
AMP
DT5-NF20F
TDA7266
MAIN IC SCL SDA
TRAP
SCL SDA DCT814B
SAW BPF
14V
IR FILTER IF DET. (1) (2)
OUT
SW1 ~ SCL
SW5 SDA
u-COM IC
OSD RGB VIDEO
LC863240
RGB AMP
SCL
EEPROM 5V TDA6103Q
SDA
X-RAY
9V
SOUND SCL (1)
5V
SOUND SDA (2)
220V
OCP VERTICAL HOR. OUTPUT 10V Screen Fouse H.V.
LA7841 2SD2499
26V 14V
28V FBT
DEFLECTION YOKE HEATER
POWER IC SMPS TRANS
2SK2677 TSM-3541A5
DPM001T1A
3
ALIGNMENT INSTRUCTION
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.
MUTE POWER
3. CH
2 1 Use these buttons to change your TV's volume, to
activate selections in the menu system.
MENU
3
4. VOL
4 4 Use thesebuttons to change your TV's volume, to
5 VOL VOL activate selections in the meny system, or to change
3 audio and video settings.
CH
5. MENU
1 2 3
Use this button to turn the TV's menu system on and off.
9
4 5 6
6. DISPLAY
7 8 9
Use this button to display the channel numbeer and
status.
SLEEP 0 PREVIOUS 7. INPUT
10 11 Use this button to select the TV's signal source.
DISPLAY INPUT VIDEO
6 8
8. VIDEO
7 Use this button to display video adjustment.
9. 0-9
Use these buttons to change channels.
10. SLEEP
Use this button to program the TV to turn off after a
certain time.
11. PREVIOUS
Use this button to return to the previous channel you
were watching.
4
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.