Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo TV CM900 chassis cm-900

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cm-900


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     Service Manual
     Colour Television
     CHASSIS: CM-900
     Model: DTC-25G1VM (NO TXT)
            DTC-29G1VM (NO TXT)
            DTC-25G3VMR (NO TXT)
            DTC-25G4VMS (NO TXT)
            DTC-25G7VM (NO TXT)
            DTC-29G1TM (TXT)
            DTC-25G1TM (TXT)




DAEWOO ELECTRONICS CO., LTD.



SPECIFICATIONS ................................................................................................................................               2
SAFETY INSTRUCTIONS ....................................................................................................................                      3
BLOCK DIAGRAM ...............................................................................................................................                 4
ALIGNM ENT INSTRUCTIONS .............................................................................................................                         5
  ,, C M -900 C HA SS IS A D JU STM E NT .................................................................................................... 5
  ,, SE R VIC E M O D E ................................................................................................................................ 11
  ,, O TH E R S ER V ICE FU N CTIO N .......................................................................................................... 12
  ,, TE ST S IG N AL SE LEC TIO N .............................................................................................................. 13
  ,, SE R VIC E R E M O TE C O N TR O LLER ................................................................................................. 14
PARTS LIST ......................................................................................................................................... 15
DIFFERENCE PARTS LIST ................................................................................................................. 29
PRINTED CIRCUIT BOARDS .............................................................................................................. 31
EXPLODED VIEW
  ,, D TC -25G 1VM .................................................................................................................................... 32
  ,, D TC -29G 1VM .................................................................................................................................... 33
  ,, D TC -29G 3VM R .................................................................................................................................. 34
  ,, D TC -29G 4VM S .................................................................................................................................. 35
  ,, D TC -2987V M ..................................................................................................................................... 36
SCHEM ATIC DIAGRAM ....................................................................................................................... 37




                                                                                 
 SPECIFICATIONS

   STANDARD MODEL                       DTC-25G1VM                                          DTC-29G1VM
TV STAN DA RD            PA L/S E CA M -B/G , D /K, I, H , NTSC -4.43/3.58
M ains Voltage           A C 110 - 250V, 50/60H z
Pow er Consum ption      120W                                                145W
Sound O utput Pow er     10W + 10W (AT 100% M O D , 10% TH D)
Speaker                  12W 8 O hm s (Norm al) X 2E A
Antenna Im pedance       75 O hm unbalanced (DIN Standard)
Tuning S ystem           Voltage Synthesize Tuning System
Num ber of Program       100 Channels
Reception Channel        V HF - L : I1 - S 8 C H (43.25 - 154.25M H z)
                         V HF - H : S 9 - S41 C H (161.25 - 463.25M Hz)
                         U HF : C13 - C57 C H (471.25M H z - 863.25M Hz)
Rem ote C ontrol U nit   R -33C
CRT                      25 Inch                                             29 Inch
W eight                  33K g (S ET)                                        45K g (SE T)
Indication               P rogram N o. D isplay
                         Tuning Voltage D isplay
                         Video Input Display
                         A nalog Control Display
                         (Color, B right, Contrast, S harpness, Tint, B/B -B ack/Blue)
                         Volum e Control D isplay
                         (Bass, Treble, B alance)
                         P reset D isplay
                         C lock D isplay
                         N TS C state Display
                         O N/O FF Tim er Display
                         Language D isplay




                                                          
 SAFETY INSTRUCTIONS

NOTE
       BEFO R E SERVIC IN G TH IS C H ASSIS, READ TH E "X-R AY R ADIATIO N PREC AUTIO N ",
       "SAFETY PR ECAU TION " AND "PRO D UC T SAFETY N O TICE" BELO W.



 X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially haz-                 reading of the high voltage recorded as a part of
   ardous X -R AY R A DIATIO N .To avoid such hazards,                 the service records. it is im portant to use an accu-
   the high voltage m ust not exceed the specified lim it.             rate and reliable high voltage m eter.
    The nominal value of the high voltage of this receiver is       2. The only source of X-R AY R adiation in this TV
   26.5kv(25"), 29.5kv(29") at max beam current.                       receiver is the picture tube.
    The high voltage must not, under any circumstances,                 For continuous R AD IATIO N protection, the
   exceed 29.0kv (25"), 31.5kv(29").                                   replacem ent tube m ust be exactly the sam e type
    Each tim e a receiver requires servicing, the high                 tube as specified in the parts list.
   voltage should be checked. It is recom m ended the


 SAFETY PRECAUTION

1. P otentials of high voltage are present w hen this receiver      2. If any Fuse in this TV receiver is blow n, replace it w ith
   is operating. O peration of the receiver outside the cabi-          the FU S E specified in the R eplacem ent P arts List.
   net or w ith the back cover rem oved involves a shock            3. W hen replacing a high w attage resistor(oxide m etal film
   hazard from the receiver.                                           resistor) in circuit board, keep the resistor 10m m aw ay
   1) S ervicing should not be attem pted by anyone w ho is            from circuit board.
      not thoroughly fam iliar w ith the precautions necessary      4. K eep w ires aw ay from high voltage or high tem perature
      w hen w orking on highvoltage equipm ent.                        com ponents.
   2) A lw ays discharge the picture tube to avoid the shock        5. This receiver m ust operate betw een A C 110~250volts,
      hazard before rem oving the anode cap.                           50H z/60H z. N E V E R connect to D C supply or any other
   3) D ischarge the high potential of the picture tube before         pow er or frequency.
      handling the tube. The picture tube is highly evac
      uated and if broken, glass fragm ents w ill be violently
      expelled.


 PRODUCT SAFETY NOTICE

M any electrical and m echanical parts in this                      supplem ents, electrical com ponents having such fea-
chassis have special safety-related characteristics.                tures are identified by designated sym bol on the parts
These characteristics are often passed unnoticed by                 list. Before replacing any of these com ponents, read
a visual inspection and the X-R AY R AD IATIO N                     the parts list in this m anual carefully.
protection afforded by them cannot necessarily be                   The use of substitute replacem ent parts w hich do not
obtained by using replacem ent com ponents rated for                have the sam e safety characteristics as specified in
higher voltage, w attage, etc.                                      the parts list m ay created X-R AY R adiation.
R eplacem ent parts w hich have these special safety
characteristics are identified in this m anual and its


                                                                 
BLOCK DIAGRAM




                
 ALIGNMENT INSTRUCTIONS

,, CM-900 CHASSIS ADJUSTMENT
Application



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