Viewing The Self Check Diagnosis History - Sony KDL-40BX450 Service Manual

VIEWING THE SELF CHECK DIAGNOSIS HISTORY

When an error is detected, the Self Check screen records the date(s) and
the number of times the error occurred. This is helpful in confirming past
occurrences of an error, and for determining if an error is intermittent when
the customer is not sure what is causing the television to shut down. If the
screen displays a "0", no error has occurred.
1. Take the TV out of deep Standby mode by pressing
turn on the TV.
POWER
2. Press to turn the TV back off.
3. Press the following buttons on the Remote Commander within a
second of each other:
DISPLAY
Channel
Sound Adjustment
Wide Band Tuning
Range Scan...
Self diagnosis history
Status Information...
LVDS Spectrum(%0)
DPMS
Low of HPD
TVD_MCDONE_CNT
Demo Special
Bypass AVI Info Detect
Panel Selection
UART Selection
SERIAL NUMBER EDIT
MODEL NAME EDIT
4. To access the Self diagnosis history page, press
diagnosis history is highlighted, and then press
KDL-40BX450/40BX451/46BX450/46BX451
5 +
Volume
Service Mode
>>
>>
>>
>>
>>
<[ 20 ]>
<[ Off ]>
<[ 5 ]>
<[ 20 ]>
>>
<[ On ]>
<[ 13_FHD_SLCD_40 ]>
No Log
5000027
KDL-40BX450
[</>]Set [Home] Exit
.
SECTION 2 - TROUBLESHOOTING
POWER
to
POWER
2X Blink - Main Power Error
A loss of REG12V from the power supply triggers this protect event. The
usual cause is a failure of the main switching supply. In some instances,
excessive loading on the secondary supply lines can cause the switching
regulator to stop, or fail again, if a replacement board is installed.
3X Blink- DC Regulator/Audio Error
The REG 5V and D3.3V source originating on the Main Board is monitored
for low-voltage conditions by the CPU. A failure causing a 3X shutdown
requires replacing the Main Board.
4X Blink – Balancer Error
NOT USED IN THIS MODEL SERIES
5X Blink - TCON Error/Panel Error
The 5X blink protection mode indicates a communications error with the
until Self
timing control circuits (TCON Board) has occurred. If the TCON Board is
available for replacement, replace it, if not, replace the LCD Panel Assembly.
In rare cases a loose or defective LVDS cable could also be the cause.
SELF CHECK
Back
002 MAIN_ POWER
003 DC_ALERT1
003 AUDIO_PROT
004 BALANCER_ERR
005 TCON_ERR
005 PANEL_ID_NVM_ERR
006 BACKLIGHT_ERR
007 TEMP_ERR
00001 00036 00001
SAMPLE SELF CHECK DIAGNOSIS PAGE
<<
000
000
000
000
000
000
000
000
[Home] Exit
7