Saturday, May 09, 2015

DAEWOO 14 Inch CTV – How to enter Service Mode – Alignments – Circuit Diagram

Service Mode {Factory mode]_Main aligments_Full Schematic (Used ICs - TDA9361_TDA8357J_TDA7267A_TDA6107Q_MA8120(Power Control) – Daewoo 14” CTV CP-185N and CP-185C chassis.
Universal remote control set-up codes to check with Daewoo TVs
MICRO-CONTROLLER CONFIGURATION AND SERVICE MODE
* Select pr. number 91
* Adjust sharpness to minimum and exit all menu.
* Quickly press the key sequence: RED - GREEN - menu
* To exit SERVICE menu press menu key or Std By key.
* In Service Mode press "OK" to the micro-controller i.e. the I2C bus is free and the set can be controlled by external equipment.
* Press "OK" again to allow the micro-controller to control the set again.
G2 alignment
> Set TV in NORMAL mode
> TV in AV mode without video signal? (Black screen.)
> TV preset with WP Red, WP Green and WP Blue equal to 32.
> TV preset with Black R, Black G equal to 8.
> Adjust screen volume (on FBT) such that the highest cathode cut-off voltage measured on CRT board is Cutoff 5V.
White balance
* Select a dark picture and adjust Black G and Black R to the desired color temperature.
* Select a bright picture and adjust WP Red, WP Green, WP Blue to the desired color temperature.
Focus
Adjust the Focus volume (on FBT) to have the best resolution on screen.
Vertical geometry
Adjust the Vertical Amplitude, Shift, S-Correction and Slope to compensate for vertical distortion.
Horizontal picture centering
Adjust H Shift to have the picture in the center of the screen.
AGC
* Adjust the antenna signal level to 68dBµV 2 for Daewoo tuner (63dBµV 1 for Philips tuner)
* Set RF AGC to 0.
* Increase RF AGC level and stop when the level on pin 6 of IC 01 goes below 2.5 Vdc.
CIRCUIT DIAGRAM (Schematic) - Full.  
Click on the Schematic to Magnify
UNIVERSAL REMOTE CONTROL SET-UP CODES
0031 0049 0101 0123 0152 0181 0193 0195 0213 0217 0226 0379 0456 0697 0699 0748 0798 0810