Sony XBR-84X900 - 4K UHD LED TV - Service mode – Power led blinking and board faults – self diagnostics – white balance adjustment - picture adjustment - LED Television repair and service

Category: LCD LED Television Repair and Service 

Contents of this article  

• How to access the service mode 
• Led blinking and faulty boards 
• White balance adjustment 

Sony XBR-84X900

SELF DIAGNOSIS FUNCTION

If an error occurs, the Smart Core Red 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 Smart Core Red 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 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 .B

Board Description

<G>: Power supply board, <B>: Main board, <T>: Tcon board, <P>: Panel module , <S>: Speaker , <A>: Power Adapter

LED BLINKING AND FLUTY BOARD 

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]

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 
SELF DIAGNOSIS FUNCTION
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.

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

SOFTWARE VERSION
1) In Service Mode, select “Model Information”, press “Enter” or “> ” button to enter Status Information.

2) Press “Enter” or “Return” button to return to Service Mode.

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 “>” button to enter inside.
2) Select “Model Number Setting” by pressing “UP” or “DOWN” button then pressing “Enter” or “>” 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
(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 “>” 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 “>” 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 “>” button to enter inside.

2. Select “HDD Performance check ” by pressing “UP” or “DOWN” then pressing “Enter” or “>” 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 “>” button to enter inside.
2) Select “AAA” by pressing “UP” or “DOWN” then pressing “Enter” or “>” button to enter inside.

3) Result OK or NG will be displayed after HDD re-registration is succeed/failed