Sony KDL-24EX520 / KDL-32EX420 / KDL-32EX520 / KDL-40EX520 / KDL-46EX520 Service Manual ▷ View online
KDL-32EX420, 24/32/40/46EX520(CH)
37
1) 2 times blinking (Main Power Error)
TROUBLE SHOOTING
3-4. STANDBY LED BLINK
2 times blinking
Check REG12V at
pins 2/3 of
CN6001 on
the B* Board
B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
12V NG
12V OK
NG
OK
KDL-32EX420, 24/32/40/46EX520(CH)
38
TROUBLE SHOOTING
2) 3 times blinking (DC Alert, Audio Error and Communication Error)
3 times blinking
Check D+1.2V at
JL6007
on the B* Board
F6001,IC6005,etc
(B* Board)
Speaker
Check +3.3V_MAIN
at JL9234 on
the B* Board
Check
Speaker Impedance
at SP Connector
F6003,IC6003,etc
(B* Board)
Check AUDIO+12.5V
at pin 8/9 of
CN6001 on
CN6001 on
the B* Board
G* Board
Check +12.5V
at F4601 on
the B* Board
F4601,IC4601,etc
(B* Board)
IC4601,etc
(B* Board)
DC_ALERT
NG
OK
AUDIO
AUDIO
FE/BE Communication
NG
OK
NG
OK
NG
OK
NG
OK
KDL-32EX420, 24/32/40/46EX520(CH)
39
TROUBLE SHOOTING
3) 5 times blinking (T-con Error)
5-time blinking
Check PANEL_VCC
at pin 1 of
CN6001 on
on the B* Board
G* Board
Replace the Harness
Between G* and Panel
(a)
Replace
the LVDS Harness
Panel (T-con)
change
B* Board
Harness
LVDS Harness
Panel (T-con)
about 5V : 22” Model
about 12V : ex. 22” Model
about 12V : ex. 22” Model
(a) exclude 60Hz Panel Model
NG
OK
NG
Symptom
improvement
improvement
Symptom
improvement
improvement
Symptom
improvement
improvement
NG
NG
RGB sensor Change
RGB Sensor
(b) Only for Y* Models
Symptom
improvement
improvement
KDL-32EX420, 24/32/40/46EX520(CH)
40
TROUBLE SHOOTING
4) 6 times blinking (Backlight Error)
6-time blinking
Check
BL_ERR at
pin 7 of CN6002
on the B* Board
B* Board
Under 2.65V
G* board
NG
Over 2.65V
Symptom
improvement
improvement
Change G* Board
Panel
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