Wednesday, November 11, 2015

SONY- 40W580B SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY - 40W580B

SERVICE MODE AND POWER SUPPLY CIRCUIT

Self Diagnostic Screen Display

To bring up the self diagnostic screen display
In standby mode, press the following buttons on the remote commander sequentially in rapid sucession as shown below:
ON SCREEN DISPLAY > CH 5 > VOLUME -- > POWER ON
How to enter the Service Mode
Service adjustments to this model can be performed using the supplied Remote Commander RM-ED016.
1. Turn on the power to the TV set and enter into the stand-by mode.
2. Press the following sequence of buttons on the Remote Commander.
ON SCREEN DISPLAY > CH 5 > VOLUME + > POWER ON

3. The TVM menu appears on the screen
Note : After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.
Changing TVM Data Settings
1. Press “2 / 5” on the remote commander to select (up / down) category.
2. Press “1 / 4” on the remote commander to select (up / down) item.
3. Press “3 / 6” on the remote commander to select (up / down) data .
Writing TVM Data
1.Press “Mute” on the remote commander. The word “SERVICE” changes to “WRITE”
2.Press “0” on the remote commander. The word “WRITE” changes to red. This indicates writing is in progess.
3. When red “WRITE” changes to green “SERVICE”. This indicates writing is complete.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN



SONY TV SERVICE TIPS 
SONY KV32XBR85
NO RASTER
KV32XBR85 Unit has no raster. Has sound and weak OSD. Stand-by light is not flashing.
SOLUTION
Unit appears to have a normal IK feed back to the jungle IC. Screen voltages are 670 vdc and the cathode is running at 180 vdc. Unit looks like a defective Jungle IC. Replacing the Jungle IC corected the symptom.
SONY KV36FV15
RASTER PROBLEM
KV36FV15 Unit will turn on with the front panel control but the set will not develop raster or sound. The high voltage will turn but no raster. After 3 minutes the raster and sound will appear.
SOLUTION

Tech needs to look into the Data & Clock lines of the chassis. These lines must be 5 volts peak to peak and have a typical word length of 1000 milli seconds. The SDA pulses were 3.3 volts peak to peak whereas the CLK pulses were at 5 volts. Tech had to isolate each load on the SDA line and found the PIP tuner was responsible for loading down the DATA line.

3 DIGIT UNIVERSAL REMOTE REMOTE CODES FOR SONY TV

006, 301, 005, 446, 412, 393, 375, 360, 325, 255, 203, 185, 174, 058, 003