Sunday, February 28, 2016

Sony XBR-55X900A - 4K LED TV – LED blinking error codes and causes – how to enter to Service mode – Self diagnostics – white balance adjustment – LED Television repair and service

Category: LCD LED Television Repair and Service 

Contents of this article 

  • How to access service mode 
  • LED blinking codes and causes 
  • Self diagnostics 

Sony XBR-55X900A

HOW TO ENTER THE SERVICE MODE
1) Turn on the main power switch to set in standby mode.
2) Press the buttons on the remote commander in the following sequence
with each interval within 1 sec, then the service mode will be set.
DISPLAY > CHANNEL 5> VOLUME + >POWER ON
3) Service mode will display.
4) How to use the remote commander.
Function
The flow of control
Service mode on
<Display><5><Vol Up><Power>
Service mode off
<MENU>/<HOME>
Item up / down
<UP>/ <DOWN>
Item select left/right
<LEFT>/<RIGHT>
Execute
<OK>
5) After entering service mode, then turn off the power switch.
Summary of key behaviour
Key
Behavior
Menu
Close service menu

Cursor/Enter

Return Previous page, Change potion of focus item,
Enter next page of focus item, etc..
Return
Return to previous page, close service menu etc..
SOFTWARE VERSION
1) In Service Mode, select “Model Information”, press “Enter” or “RIGHT ” button to enter Status Information.
2) Press “Enter” or “Return” button to return to Service Mode.
SERIAL NUMBER EDIT (1)
1) In “Service Mode”, select “Model Information” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.
2) Select “Serial Number Edit” by pressing “UP” or “DOWN” button then pressing “Enter” or “RIGHT” button
3) Press “UP” or “DOWN” to input numbers.
4) After user input data , press <Enter> .
# Pop-up dialog appear to confirm input data correct
Serial Number can be set ONLY ONCE
5) 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.
SERIAL NUMBER EDIT (2)
If YES is selected, the input data is saved into EEPROM.
SERIAL NUMBER EDIT is greyed out and the serial number that has been input is displayed.
User will not able to edit anymore.
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.
MODEL NUMBER SETTING
1) In “Service Mode”, select “Model Information” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.
2) Select “Model Number Setting” by pressing “UP” or “DOWN” button then pressing “Enter” or “RIGHT” button.
3) Press “UP” or “DOWN” arrow key to scroll Product Name Candidate.
(e.g. KDL-40X500B CO1,KDL-40X500C BR6)
4) Select one Product Name from the list, press <Enter> will pop dialog to inform user to confirm data. Model dependent settings will be overwritten into EEPROM.
WB ADJUSTMENT
(Please apply when main board or panel is replaced.)
In “Panel/PQ” service mode.
a. Go to “WB Adjustment” category by “UP” or “DOWN”.
b. To select “WB Adjustment”, press “RIGHT” button.
c. To change data , press “LEFT” or “RIGHT” on remote commander.
WB/MURA/CUC DATA TRANSFER
(Please apply when main board or panel is replaced.)
1. In “Panel/PQ” service mode.
a. Go to “WB/Mura/CUC data transfer” category by “UP” or “DOWN”.
b. To select “WB/Mura/CUC data transfer”, press “RIGHT” button.
c. To change data , press “LEFT” or “RIGHT” on remote commander.
2. In “WB/Mura/CUC data transfer”.
a. Select “WB/Gamma data transfer” by pressing “UP” or “DOWN” on remote commander.
b. To change the items, press “LEFT” or “RIGHT” on remote commander and press “Enter” button.
Selectable items are:
0. SoC to T-con
1. T-con to SoC
2. Not action
c. Select “[start]” and press “Enter” button to start transfer.
HDD PERFORMANCE CHECK
1. In “Service Mode”, select “General Setting” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.
2. Select “HDD Performance check ” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.
3. A message "Please wait ..." is displayed during performance check processing.
4. Result OK or NG will be displayed after performance of HDD is checked.
HDD RE-REGISTRATION
1) In “Service Mode”, select “General Setting” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.
2) Select “AAA” by pressing “UP” or “DOWN” then pressing “Enter” or “RIGHT” button to enter inside.

DIAGNOSTIC TEST INDICATORS
When an error occurs, the Smart Core Red 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 .
POWER LED BLINKING AND CAUSES 
RED LED blinking count
Detection Items
2x


<G/B> Main 12V over voltage [MAIN_POWER]




3x

<B> Main 5.0V failure [DC_ALERT]
<B/S> Audio amp. protection [AUD_ERR]
<B> Tuner or demodulator I2C No ACK [TU_DEMOD]
<B> HDMI Switch/Equalizer I2C communication error [HDMI_EQ]

4x


None


5x

<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR]
<T> TCon IC I2C communication error [TCON_ERR]

6x

<G/P/B> Backlight failure [BACKLIGHT]


7x

Over temperature protection [TEMP_ERR]
<B> Temp. sensor I2C No ACK [TEMP_ERR]
<B> V By One lock error between Main device and 4KBE device [4KBE_ERR]

8x

<B> Software error [SW_ERR]
BOARD DESCRIPTIONS
G: Power supply board, B: Main board, T: Tcon board, P: Panel module , S: Speaker , A: Power Adapter
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
Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, Power off & on or Push the <Home> button.