SONY KDL-40R550C – SERVICE MODE – LED BLINKING CODE – WHITE BALANCE ADJUSTMENT – SOFTWARE UPDATE PROCEDURE – LED TELEVISION REPAIR AND SERVICE

SONY KDL-40R550C – Service mode – LED blinking code – white balance adjustment – software update procedure – LED television repair and service

Category: LED Television Repair and Service 

Contents of this article 

• How to enter to service mode 
• White balance adjustment 
• Software Update procedure 
• Led blinking and causes 

SONY KDL-40R550C

SELF DIAGNOSIS FUNCTION

If an error occurs, the STANDBY LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash 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 first of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a “0”, no error has occurred .

LED BLINKING CODES AND CAUSES 

The Number of Standby LED (RED blinking)	Error Detection	Error Location
2	Main Power Error	AC adapter Error
3	Audio Error	B board Error
4	Panel Power Error	B board Error
5	Panel I2C COMM Error	B or Source board Error
6	Backlight Error	B  board Error
7	Subwoofer Error	B board Error

SELF-DIAGNOSTIC SCREEN DISPLAY

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for confirmation on the screen:
To Bring Up Screen Test
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:

DISPLAY > CHANNEL 5> VOLUME - > POWER ON

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.

HOW TO ENTERING SERVICE MODE
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.

INFORMATION > CHANNEL 5 > VOLUME + > POWER ON

ACCESSING SERIAL NUMBER EDIT
1) Press RIGHT button on Remote to edit Serial Number.

2) Press UP or DOWN button to select number.
The font color of YES is change to black when it is selected.

3) Serial Number can be set ONLY ONCE

# After user input data , press <Enter>.
# Pop dialog will appear to inform user to confirm data.
# Press RIGHT or LEFT button to select YES or NO.
# Select YES if input data is correct.
# Select NO if input data is incorrect.
# Press <Enter> to save answer

4) If YES is selected, the input data is saved into EEPROM.

# SERIAL NUMBER EDIT is grayed out and the serial number that has been input is displayed.

# User will not able to edit anymore.

5) If NO is selected, the input data is not saved into EEPROM.

# The serial number that has been input is displayed.
# User can still edit the Serial Number.

ACCESSING MODEL NAME EDIT

1) Press button on Remote to edit Model Name.

2) Press UP or DOWN button on Remote to select character.

3) Model Name can be set ONLY ONCE.

# After user input data , press <Enter>.
# Pop dialog will appear to inform user to confirm data.
# Press UP or DOWN  button to select YES or NO.
# Select YES if input data is correct.
# Select NO if input data is incorrect.
# Press <Enter> to save answer.

4) If YES is selected, the input data is saved into EEPROM.

Model Name EDIT is grayed out and the model name that has been input is displayed.

User will not able to edit anymore

5) If NO is selected, the input data is not saved into EEPROM.

# The model name that has been input is displayed.
# User can still edit the Model Name.

WHITE BALANCE ADJUSTMENT

1) Press RIGHT button on Remote to enter White Balance Adjustment.

2) Press LEFT or RIGHT  button to  change intended Color Temp adjustment.(Cool , Neutral and Warm)

3) Start WB adjustment by changing R/G/B Gain & Offset register

4) After adjustment completed go to Data Save and press > until it shows “W/B” and press enter.

5) Recall Data operates 2 processes at the same time.
i) Reset current Color temp Data R/G/B Gain & Offset register to default.
ii) Return to original WB data.

6) To perform Recall data, go to Recall Data and press > until it shows “W/B” and press enter.

7) To get original WB data if panel or Board is changed, please execute Data recall for each color temp.

8) AC Off and ON is needed after Recall data.(For function 6(ii)).
Short time flicker (White pattern changes 3 times) can be observed to verify the Copy Data operation is working.

How to update TV Software
1. Please download TV firmware image from Server in each region on your PC.
(filename: sony_fwboot_2015_<Version>_<Dest_ID(lower-case)>_.zip)
2. Extract TV firmware image and you will get 2files.
(sony_fw_2015_<Version>_<Dest_ID>.pkg & sony_boot_2015_<Version>_<Dest_ID>.bin)
3. Copy sony_fw_2015_<Version>_<Dest_ID>.pkg file to the root directory of USB pen drive. (ex: sony_fw_2015_1500_SLPDA.pkg)
4. Insert USB pen drive to USB port of TV

5. Pull Out the AC plug and wait 10 second (considering the charge of AC adaptor).
6. Press and hold the side Power Key for 5 seconds and re-insert the AC plug at the same time.

7. After 20-30 seconds, the LED is turn to Amber and blink.

LED blinking indicates “Under SW Update”.
IMPORTANT NOTE: PLEASE DO NOT PULL OUT THE AC PLUG DURING THIS STATE.

8. After 1-2 minutes, LED blinking will finish. Please press <Power> key.
If “SONY” Logo displays the screen and LED is turn to GREEN, Software update is success!!

9. Pull out the USB pen drive from TV.

10. TV on standby and Enter Service Mode. Press “i+ (info)”, “5”, “Volume +” then “TV power” on remote.

11. Select “Status Information” item and Press <Enter> key.

12. Confirm SW,NVM,Boot,Panel ID,PQ,AQ Version.

13. Press <Return> to back Service Mode Menu.

14. Select “UART Selection” by UP/DOWN  key, and select “No log” item by LEFT/RIGHT Key and press <Enter> key for Selection.

15. Pull Out the AC plug and wait 10 second (considering the charge of AC adaptor).

16. Insert the AC plug.

17. Press <Power> Key to turn on the TV.