Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo TV DTQ-21A35R Daewoo+DTQ-21A35R+DTQ-21A24N++Chassis+CX-A21FB

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Daewoo+DTQ-21A35R+DTQ-21A24N++Chassis+CX-A21FB


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Service Manual
COLOR Television

CHASSIS : CX-A21FB
Model:




 Specification
  TV Standard             NTSC-M, PAL-M, PAL-N
  Sound system            AV STEREO
  Power consumption       90W
  Speaker                 5W 8 Ohm x 2
  CRT                     21" Ultra Slim CRT
  Channel indication      On screen display
  Auxiliary Terminal      RCA jack : TV output and AV input


   Caution
   : In this Manual, some parts can be changed for improving. their
     performance without notice in the parts list. So, if you need the
     latest parts information, please refer to PPL(Parts Price List)in
     Service Information Center.




                                                              March 2012
 TABLE OF CONTENTS
1.SAFETY INSTRUCTION                                  2

2.SCHEMATIC DIAGRAM                                   3

3.Descriptions for the operation of factory mode   4~14

4.Main PCB BOM LIST                                15~19

5.WORK GUIDE                                       20~23
  1. SAFETY INSTRUCTION

   WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment


X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high
   voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14")or
   24-26 kV (20"-21")at max beam current. The high voltage must not, under any circumstances, exceed 27.5 kV (14",
   20"), 29KV (21"). Each time a receiver requires servicing, the high voltage should be checked. It is important to use an
   accurate and reliable high voltage meter.).

2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION
   protection, the replacement tube must be exactly the same type tube as specified in the parts list.




 SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or
   with the back cover removed involves a shock hazard from the receiver.
    1) Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when
       working on high voltage equipment.
    2) Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if
       broken, glass fragments will be violently expelled.
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor body 10 mm away
   from the circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply of any other voltage or
   frequency.




 PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These characteristics
are often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by them cannot
necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts
which have these spe- cial safety characteristics are identified in this manual and its supplements, electrical components
having such features are identified by designated symbol on the parts list. Before replacing any of these components,
read the parts list in this manual carefully. The use of substitutes replacement parts which do not have the same safety
characteristics as specified in the parts list may create X-RAY Radiation.
2.SCHEMATIC DIAGRAM




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    1
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