Sony KDL-32EX400 / KDL-40EX400 Service Manual ▷ View online
KDL-32/40EX400(HK/WB/GA)
25
TROUBLE SHOOTING
2) 3 times blinkings (DC Alert, Audio Error and Communication Error)
3 times Blinkings
Check D+3.3V at
JL3715 or JL3716
on the BAL Board
IC4200,etc
(BAL Board)
F3700,IC3700,etc
(BAL Board)
Speaker
Check +5V_MAIN
at JL3731 or JL3732 on
the BAL Board
Check
Speaker Impedance
at SP Connector
F3701,IC3701,etc
(BAL Board)
Check
X_ASW_PROTECT
at pin 29 of IC5000
on the BAL Board
Check +12.5V
at pin 2 of
CN3800 on
the BAL Board
G* Board
Check +12.5V_AU1
at F4200 on
the BAL Board
F4200,IC4200,etc
(BAL Board)
IC9000,etc
(BAL Board)
DC_ALERT
NG
OK
AUDIO
AUDIO
FE/BE Communication
NG
OK
NG
OK
NG
OK
NG
OK
Pin: Low
Pin: High
KDL-32/40EX400(HK/WB/GA)
26
TROUBLE SHOOTING
3) 4 times blinkings (Balancer Error)
4 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BAL Board
BAL Board
PANEL
(Balancer)
Between 0.84V to 2.65V
KDL-32/40EX400(HK/WB/GA)
27
TROUBLE SHOOTING
4) 5 times blinkings (T-con Error)
5 times Blinkings
Check PANEL_VCC
at JL3806
on the BAL Board
G* Board
LVDS Harness
check
Panel (T-con)
change
BAL Board
LVDS Harness
Panel (T-con)
NG
OK
NG
OK
NG
OK
KDL-32/40EX400(HK/WB/GA)
28
TROUBLE SHOOTING
6) 7 times blinkings (Temperature Error)
7 times Blinkings
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
BAL Board
Set to another
Location, etc.
Change BAL Board,
and Aging a few hours
Panel
5) 6 times blinkings (Backlight Error)
6 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BAL Board
G* Board
BAL Board
Under 2.65V
Change G* Board
Panel (T-con)
NG
OK
NO
YES
NG
OK
Over 2.65V
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