Saturday, May 09, 2015

DAEWOO 21U6/21U8ME/MT/MP/MZ How to enter Service Mode Alignments - Circuit Diagram

Daewoo 14D4/20D4/21D4 ME/MT/MP/MZ _ 14D6/21D6 ME/MT/MP/MZ _ 14D7/20D7/21D7 ME/MT/MP/MZ _ 21U6/21U8ME/MT/MP/MZ _ DTD-14D3/20D3/21D3 ME/MT/MP/MZ

Used ICs - TDA9859_TDA7297_SDA55XX(Micom)_TDA6107Q_MM1118_TDA8403_STR F6656_24LC168
SERVICE MODE
To Enter SERVICE MODE : Press keys of User Remocon, as follows.
> Ch91, Sharpness 0, Skip(red), Move(green), Menu.
> Choice SERVICE MENU : Pr-Up/Down
> Enter SERVICE SUB MENU : Vol-Up/Down
> Adjust SERVICE MENU : Vol-Up/Down.
ALIGNMENTS
AGC ADJUSTMENT
Pattern : PAL B/G 10CH Color BAR (RF Level = 60 dB)
Connect the Pattern Generator RF Output to Tuner RF Input.
Press the S10 Key of Service Remocon to enter the “AGC MODE”.
Execute the “AUTO AGC” using the Vol-Up Key.
SCREEN ADJUSTMENT
Pattern : PAL B/G Retma
Press the NORMAL Key to set the “NORMAL 1” mode.
Press the S2 Key of Service Remocon.
Adjust the SCREEN VOLUME on FBT so that the horizontal line reach the cut-off point.
FOCUS ADJUSTMENT
Pattern : PAL B/G Retma
Adjust the FOCUS VOLUME on FBT to obtain clear resolution.
WHITE BALANCE ADJUSTMENT
Press the NORMAL Key to set the “NORMAL 1” mode.
Press the S8 Key of Service Remocon to enter the “WHITE BALANCE” mode.
Adjust the each color ( R,G,B ) which appears abnormally on the screen.
GEOMETRIC ADJUSTMENT
Press the NORMAL Key to set the “NORMAL 1” mode.
Press the S6 Key of Service Remocon to enter the “GEOMETRIC” mode.
VERTICAL CENTER ADJUSTMENT
Pattern : PAL B/G Retma
Choose the “V-CENTER” using the Pr-Up/Down Keys.
Adjust the horizontal line of picture to coincide with the mechanical center marks of the CRT using the Vol-Up/Down Keys.
# If the pattern is smaller than the screen, adjust the V-size to fit.
HORIZONTAL CENTER ADJUSTMENT
Pattern : PAL B/G Retma
Choose the “H-CENTER” using the Pr-Up/Down Keys.
Adjust the vertical line of picture to coincide with the mechanical center marks of the CRT using the  Vol-Up/Down Keys.
VERTICAL SIZE ADJUSTMENT
Pattern : PAL B/G Retma
Choose the “V-SIZE” using the Pr-Up/Down Keys.
Adjust the vertical size of the picture using the Vol-Up/Down Keys.
HORIZONTAL SIZE ADJUSTMENT
Pattern : PAL B/G Retma
Choose the “H-SIZE” using the Pr-Up/Down Keys.
Set each side over scan to be 10% using the Vol-up/Down Keys.
PINCUSHION ADJUSTMENT
Pattern : PAL B/G Crosshatch
Choose the “PARABOLA” using the Pr-Up/Down Keys; Adjust parabola width to fit on screen.
Choose the “CONER” using the Pr-Up/Down Keys; Adjust comer parabola to fit on screen.
Choose the “TRAPEZIUM” using the Pr-Up/Down Keys; Adjust trapezium to fit on screen.
S-CORRECTION ADJUSTMENT
Pattern : PAL B/G Crosshatch
Choose the “S-CORRECTION” using the Pr-Up/Down Keys.
Adjust each distance of horizontal line to be the same using the Vol-Up/Down Keys.
SUB-BRIGHTNESS ADJUSTMENT
Pattern : PAL B/G Retma
Press the NORMAL Keys to set the “NORMAL 1” mode.
SERVICE REMOTE CONTROL
SERVICE DATA
SUB-MENU
SCHEMATIC DIAGRAM
CLICK ON THE PICTURES TO MAGNIFY