Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo Сhassis CM CM-220B CM-220B

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CM-220B


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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.
    



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