SONY KDL-32R420 - How to activate Service mode - LED blinking codes and causes - Service mode adjustments - Lcd television repair and service - Service Tips
Category: LCD Television Repair and Service
Contents of this article
- How to enter to service mode
- LED blinking and causes
- Service adjustments
SONY KDL-32R420
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” -> “Sub”
WHITE BALANCE ADJUSTMENT
Change Data of “Digital” service mode. (“006 WB” category)
a. Press “0” or “10” on remote to enter WB adjustment mode.
b. Press number key “1”>”6” directly. “*” stamp move.
c. Press “12 / enter / select” to decide and advance next step. When returning on the previous page, press “return”.
d. Change data by number key “0”>”9” directly. (0-255)
e. Press “12 / enter / select” to save data. It shows red “WRITE”. It indicate writing is processing.
f. Writing process is done at this point.
SAVE CHANGING DATA
1) Change Data of “Chassis” or “Sub” service mode
2) Write data for “Chassis” or “Sub” 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” category)
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.
3) Write data for “Digital” service
mode. ( “002 MODEL” category) Note: This procedure operation, when
replaced the B board. Note: Do not write a wrong segment or destination
information in Product ID. When the wrong setting is written, TV may not
operate.
000 SEG ....Product ID - segment information
001 DEST.....Product ID – destination information
a. Change data for each model.
b. Press “0” or “enter” on remote. It shows red “WRITE”. It indicate writing is processing.
c. Writing process is done at this point.
SET TO SHIPPING CONDITION
How to do shipping condition.
a. Move to “Digital” service mode.
Press “8” on remote.
It shows green “SERVICE” changes to green “RST-”.
Press “mute” on remote.
Added green “EXE” after green “RST-” .
d. Press “0” or “enter” on remote. Green “EXE-RST” changes to red “EXE-RST”. It indicate writing is processing.
After a while, red “EXE-RST” changes to green “SERVICE”.
And all LED lights.
Writing process is done at this point.
SELF DIAGNOSIS FUNCTION
The
units in this manual contain a self-diagnostic 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 AND POSSIBLE CAUSES
|
STBY LEDFlash time
|
Service menu Item name (Screen Display)
|
Diagnostic Item Description
|
|
2
|
MAIN_POWE
|
Main
Power Over Voltage Protection
|
|
3
|
DC_ALERT
|
DC_ALERT
|
|
DTT_WDT
|
DTT
Error
|
|
|
AUD_PROT
|
Audio
Abnormal Detection
|
|
|
4
|
BALANCER_
|
Panel
Balancer Error
|
|
5
|
TCON_ERR
|
T-CON
Error
|
|
HFR_ERR
|
HFR
Error
|
|
|
P_ID_ERR
|
Panel
ID NVM Error
|
|
|
6
|
BACKLITE_
|
Back
Light Error
|
|
7
|
TEMP_ERR
|
Thermal
Error
|
|
FAN_ERR
|
FAN
Error
|
|
|
8
|
-
|
Not
used
|
|
9
|
-
|
Not
used
|
|
10
|
-
|
Not
used
|
|
11
|
-
|
Not
used
|
|
12
|
-
|
Not
used
|
|
-
|
RGB_SEN
|
RGB
Sensor ACK 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:
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 – > TV POWER
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
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.
