Tuesday, January 12, 2016

SONY KDL-46HX820 - KDL-46HX823 - KDL-46HX825 Service mode - Power led blinking and faults - Service mode adjustments - White balance adjustments - LED Television Repair and service

Category: LED Television Repair and Service 

Contents of this article 

  • How to access the service mode 
  • LED flashing and Causes 
  • Adjusting the White balance 
  • Saving the service data 

SONY KDL-46HX820 - KDL-46HX823 - KDL-46HX825

SERVICE MODE
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.
DISPLAY > Channel 5 > Volume + >  TV POWER
3) Service mode display.
Note: First of all, when you enter Service Mode, you can see “Digital” service mode. Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed. “Digital” -> “Chassis” -> “VPC”
WHITE BALANCE ADJUSTMENT
Note: Please execute this adjustment if necessary.
Change Data of “VPC” service mode. (“006 WB” category)
a. Press “1” or “4” on remote to select WB adjustment menu.
b. Change data by pressing “3” or “6”. Each range of these items is 0-255.
c. Press “mute”
”0” on remote to save the data.
“SERVICE” comment is changed to “WRITE”, indicating writing process.
d. After a while, “WRITE” comment returns to “SERVICE”, which means writing process is done.
SAVE CHANGING DATA
1) Change Data of “Chassis” or “VPC” service mode
2) Write data for “Chassis” or “VPC” service mode
a. Press “Mute” on remote.
It shows green “SERVICE” changes to green “WRITE”.
b. Press “0” or “enter” on remote. Green “WRITE” changes to red “WRITE”. It indicate writing is processing.
c. After a while, red “WRITE” changes to green “SERVICE”. Writing process is done at this point.
3) TV reboot is necessary for applying data change.
CHANGE DATA
Note: “Digital” service mode don’t have to Save. (except “002 MODEL” and “005 CHAPRESET” categor
1) Change Data of “Digital” service mode. (except “003 DIG_SRV_MODE” category)
a. Press “2 / 5” on remote to select (up / down) category.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
2) Change Data of “Digital” service mode. ( “003 DIG_SRV_MODE” category) “003 DIG_SRV_MODE” is one category of “Digital” service mode.
Please note because this operation is special.
a. Press “2 / 5” on remote to select “003 DIG_SRV_MODE”.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
d. Press number key “1”~”9” directly. “*” stamp move.
e. Press “12 / enter / select” to decide and advance next step. Press “return”, when returning on the previous page.
CHANGE THE EMITTER OUTPUT LEVEL
Note: To reduce the emitter LED output power strength.
Change Data of “VPC” service mode
a. Select “005 TD” category by pressing “2 / 5” on remote.
b. Select “000 EMIT_STR” item by pressing “1 / 4” on remote.
c. Change data from “0” to “1” by pressing “3 / 6” on remote.
0: Strong (Default)
1: Weak
d. Save by pressing “Mute” + “0” or ”10” & Reboot.
SELF DIAGNOSIS
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 .
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:
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
DISPLAY > Channel 5 > Volume - > TV POWER
POWER LED BLINKING AND CAUSES 
STBY LED Flash time
Service menu Item name (Screen Display)
Diagnostic Item Description
2
MAIN_POWE
Main Power Over Voltage Protection
3
DC_ALERT
AUD_PROT
DC_ALERT
Audio Abnormal Detection
4
BALANCER
LED driver failure
5
TCON_ERR
HFR_ERR
P_ID_ERR
T-CON Error
HFR Error
Panel ID NVM Error
6
BACKLITE
Back Light Error (Panel Inverter)
7

TEMP_ERR
FAN_ERR
Thermal Error
Fan Error
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.