Sony KDL-40EX700 / KDL-52EX700 / KDL-60EX700 Service Manual ▷ View online
KDL-40/46/52/60EX700(CH)
21
TROUBLE SHOOTING
3-2. FLOW CHART
START
Does the Power Led
stay on when the
TV is switched on ?
Is the Standby Led
blink ?
Is the Picture and
Sound OK ?
Do the buttons
on the TV & Remote
Commander work
properly?
END
See
No Power
No Power
See
Standby LED Blink
Standby LED Blink
See
No Picture / No Sound
No Picture / No Sound
See
TV/ Commander
button malfunction
TV/ Commander
button malfunction
Is the network
connection OK?
See
Can’t connect network
Can’t connect network
No
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Is the RGB sensor
function OK?
RGB Sensor
Problem
*
No
Yes
* On Self Check Display
000:RGB_SEN -> Increment
KDL-40/46/52/60EX700(CH)
22
TROUBLE SHOOTING
3-3. NO POWER
No Power
Check STBY 3.3V
at 1 pin of CN3800
on the BAL Board
Harness
G* Board
Replace
Between G* Board to
BAL Board Harness
BAL Board
NG
NG
OK
OK
Turn on the Switch
Check
Power Saving Switch
SW OFF
SW ON
KDL-40/46/52/60EX700(CH)
23
1) 2 times blinkings (Main Power Error)
3-4. STANDBY LED BLINK
TROUBLE SHOOTING
2 times Blinkings
Check REG12V at
pins 6/7 of
CN3800 on
the BAL Board
BAL Board
Harness
G* Board
Replace
Between G* Board to
BAL Board Harness
12V NG
12V OK
NG
OK
KDL-40/46/52/60EX700(CH)
24
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
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