Friday, September 04, 2015

SONY KDL-40V2500 SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY KDL-40V2500 

SERVICE MODE AND POWER SUPPLY CIRCUIT 

SELF-DIAGNOSTIC FUNCTION
Diagnostic Test Indicators
When an error occurs, the POWER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the fi rst of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest fl ashes is identified first. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.

ACCESSING SERVICE ADJUSTMENTS
To adjust various set features, use the Remote Commander to put the set into service mode to display the service menus. The Remote Commander displays the service menu associated with the Digital or Analog format depending on which format is on the TV when you enter service mode.
ACCESSING THE DIGITAL SERVICE ADJUSTMENT MENUS
1. Turn the TV on and view a Digital channel.
2. Put the TV in standby mode. (Power off).
3. Press the following buttons on the Remote Commander within a second:
DISPLAY > Channel 5 > Volume + > POWER On.
The Digital service menu displays.
4. Use the > button to view the next category listing the white balance adjustment items.
5. Use the up or down button to select the item you want to adjust.
a. To increase the data value of the category, press the >  button.
b. To decrease the data value of the category, press the < button.
6. To save the data value changes, press the > button to select Color Save and then press the enter button.
a. To save the data value changes, select Save by pressing the down button and then press the  enter button.
b. To cancel the data value changes, select Cancel by pressing the up button and then pressing the enter  button.
VIEWING THE DIGITAL MODULE BOX
(Q-BOX) SERVICE ITEMS

Use the following instructions to display the Digital menu items you want to adjust.
1. Turn the TV on and view a Digital channel.
2. Put the TV in standby mode. (Power off).
3. Press the following buttons on the Remote Commander within a second:
DISPLAY > Channel 5 > Volume + > POWER On.
The Digital service menu displays.
4. To display the Digital Module (Q Box) service adjustment menus, press JUMP . The QM category displays.
5. To change the category, press 2 or 5 on the Remote Commander.
Note: Pressing 2 or 5 only changes the categories within the service menu displayed. To return to the Digital Service Menu, press the JUMP button.
6. To change the adjustment item, press 1 or 4 on the Remote Commander.
7. To change the data value, press 3 or 6 on the Remote Commander.
Note: To go back to the last saved data value, press 0 then ENTER on the Remote Commander to read the memory.
8. To write into memory, press MUTING then ENT on the Remote Commander.
9. To exit service mode, turn the power off.
WHITE BALANCE ADJUSTMENT.
The White Balance only needs to be adjusted when you replace the BU Board.
1. Through the Video 1 input, step Gray Scale with Setup.
2. Press MENU on the Remote Commander. The User Menu displays
3. Press the down  button until Settings is selected, then press the enter  button.
4. From the Picture menu, press the > button to display the picture mode options.
a. Press the down button to select Custom, then press the enter  button.
5. From the Picture menu, press the down button to select Color Temperature.
a. Press the > button to display the Color Temperature options.
b. Press the dwon button to select Cool, then press the enter button.
6. From the Picture menu, press the down button to select Advanced Settings.
7. Using the arrow keys set all the registers in the Advanced Setting menu to Off.
8. Put the TV in standby mode. (Power off).
9. Access the Service Menu by pressing the following buttons on the
Remote Commander within a second:
DISPLAY >  Channel 5 > Volume + >  POWER On.
The Digital service menu displays.
10. Press the down button to display the white balance adjustment menu items.
11. Using 10 step NTSC Gray Scale with Setup adjust the White Balance of the 60% shade with R_Drive and B_Drive.
12. Using the same pattern, adjust the white balance 20% with R_B
KG and B_BKG.
13. 20IRE and 60IRE shades should have the same color.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN