Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo TV CP-385-785 CP-385 CP-785

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CP-385 CP-785


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                         S/M No. : CP385P-010




Service Manual
51/55/63/71 Cm STEREO Color Television


MODEL                          CHASSIS
DTA-20 T1/T2/T3/T8             CP-385
DTA-21 T1/T2/T5/T9/Y1          CP-385

DTE-25 G6/G7                   CP-785
DTE-28 G2/G6/G7/96/98/         CP-785
       A6/A7/G8/B1




DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr                 DEC. 1999
                                                                                                                      Service manual CP-385 / CP-785




                                                                    Contents


1 - Main features .................................................................................................................................      2
        1-1 Specifications ....................................................................................................................          2
        1-2 Channel table ....................................................................................................................           4
        1-3 ATSS sorting method ........................................................................................................                 7

2 - Safety instruction .......................................................................................................................... 9

3 - Alignment instructions .................................................................................................................             10
        3-1 Microcontroller configuration : Service mode ....................................................................                            10
        3-2 Microcontroller configuration : Option................................................................................                       10
        3-3 TV set Alignment ...............................................................................................................             10

4 - IC description ................................................................................................................................      13
         4-1 TDA936x TV signal processor - TXT with embedded m-Controller. ..................................                                            13
         4-2 MSP3415D Multistandard Sound Processor .....................................................................                                21
         4-3 TDA894xJ Stereo Audio Amplifier.....................................................................................                        25
         4-4 TDA835xJ Vertical Amplifier..............................................................................................                   26
              4-4-1 TDA8357J...............................................................................................................              26
              4-4-1 TDA8358J...............................................................................................................              28
         4-5 TDA6107Q ........................................................................................................................           29
         4-6 24C08 8 Kbit EEPROM .....................................................................................................                   30
         4-7 STR - F6653......................................................................................................................           31

5 - Circuit description.........................................................................................................................         33
        5-1 Block diagram....................................................................................................................            33
        5-2 IF .......................................................................................................................................   37
        5-3 Source switching ...............................................................................................................             39
        5-4 m-Controller I/O pin configuration and function..................................................................                            39
        5-5 Sound processing..............................................................................................................               40
        5-6 Sound amplification ...........................................................................................................              43
        5-7 Vertical deflection ..............................................................................................................           43
        5-8 Power supply (STR F6653) ...............................................................................................                     45
        5-9 TV start-up, TV normal run and stand by mode operations ..............................................                                       49

6 -Service parts list............................................................................................................................. 56
        6-1 DTA-21Y1L(CP-385) ........................................................................................................ 56
        6-2 DTE-28G2F(CP-785)......................................................................................................... 62

7 - Exploded view ............................................................................................................................... 69

8 - PCB Layout .................................................................................................................................... 89

9 - Circuit Diagram.............................................................................................................................. 91
                                                              Service manual CP 385 / CP785

1-1 Specifications


TV standard                 PAL - SECAM B/G D/K, PAL I/I, SECAM L/L'
Sound system                NICAM B/G, I, D/K, L,
                            FM 2Carrier B/G, D/K
Power consumption           21" : 49 W approx.
                            28" : 75 W approx.
Sound Output Power          21" : 4.5W x 2 (at 60% mod, 10%THD)
                            28" : 7W x 2 (at 60% mod, 10%THD)
Speaker                     20", 21" : 7W 8 ohm x2
                            25", 28" : 12W 8 ohm x2
Teletext system             10 pages memory FASTEXT (FLOF or TOP)
Aerial input                75 ohm unbalanced
Channel coverage            Off-air channels, S-cable channels and hyperband
Tuning system               frequency synthesiser tuning system
Visual screen size          20" : 48 cm
                            21" : 51 cm
                            25" : 59 cm
                            28" : 66cm
Channel indication          On Screen Display
Program Selection           100 programmes
Aux. terminal               EURO-SCART 1 : Audio / Video In and Out, R/G/B In, Slow and
                            Fast switching.
                            EURO-SCART 2 : Audio / Video In, SVHS In.
                            Audio-Video Jack on front of cabinet in common connection with
                            EURO-SCART 2.
                            Headphone jack (3.5 mm) on front of cabinet
Remote Control Unit         R-40A01


21 Pin EURO-SCART 1 :

Pin    Signal Description    Matching value
1      Audio Output Right    0.5 Vrms, Impedance < 1 k, ( RF 54% Mod )
2      Audio Input Right     0.5 Vrms, Impedance > 10 k
3      Audio Output Left     0.5 Vrms, Impedance < 1 k, ( RF 54% Mod )
4      Audio Earth
5      Blue Earth
6      Audio Input Left      0.5 Vrms, Impedance > 10 k
7      Blue Input            0.7 Vpp 



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