Viewing The Self Check Diagnosis History - Sony KDL-22EX357 Service And Training 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. TV must be in Standby mode.
2. Press the following buttons on the Remote Commander
within a second of each other:
DISPLAY
Channel
Sound Adjust...
Wide Band Tuning
Range Scan...
Self diagnosis history
Status Information...
LVDS Spectrum(%0)
Panel Selection
SERIAL NUMBER EDIT
MODEL NAME EDIT
3. Press until Self diagnosis history is highlighted, and
then press .
KDL-22EX357/32EX357/32EX358/40EX457/40EX458
5 + POWER
Volume
Service Mode
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KDL-32EX357
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SECTION 2 - TROUBLESHOOTING
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,
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excessive loading on the secondary supply lines can cause the switching
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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
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
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