Sony KDL-60EX720 / KDL-60EX723 Service Manual ▷ View online
KDL-60EX720/60EX723 35
SECTION 5 - FLOW CHARTS AND DIAGRAMS
OVERVIEW
The following flow charts provide information to determine what repair parts to order based on the TV error.
KDL-60EX720/60EX723 36
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO POWER
G6
TCON
(240Hz)
LCD Panel Assembly
LCD
Panel
BATV
G8
LD
LED
Backlights
19V
24V
+109V
-61V to -82V
STBY
3.3V
Power-ON
3V
TCON-ON
3V
AC-OFF-Detect
3V
TCON
12V
AC
Input
IR Sensor
5V
Motion Sensor
5V
23
39
STBY 3.3V
33
7
1
8
10
12
12
2
18
14
1
8
10
49
HMS3
HLR2
Wireless
WIFI
1
2
110VAC
CN6502
CN6101 (60")
CN6701
CN6700
CN1002
CN6002
CN2001
CN9006
3
CN6001
1
18
400V
1
18
12V
CN6501
CN6102
CN6601
CN6600
16
3
1
24
AU12V
REG 12V
TCON
12V
8
9
3
CN6001
LED-ON &
BL Control
3D Emitter
HEM2
1
12V
12
1
LED-ON
These voltage levels will vary slightly due
to panel size (40" Panel Levels shown).
CN1001
CN1000
1
1
28
1
TCON
12V
FIGURE 5-1. POWER SUPPLY DIAGRAM
KDL-60EX720/60EX723 37
SECTION 5 - FLOW CHARTS AND DIAGRAMS
Power Error
Is
“Standby” LED
illuminate steady
RED?
Does the
“Power” LED
Light Green?
No
Yes
No
Press Remote
Power Button
Initial Power-ON OK
Troubleshoot Video,
Backlight, Panel, or Audio
Problem
Check
STBY 3.3V
(In STBY Mode)
Confirm TV is
securely plugged into
an
Active AC Outlet
Is
110VAC Present
at
CN6001?
Repair AC Outlet or
Replace AC-Power Cord
OK
Yes
Check Main Fuse
F6101
Is
voltage
3.3V
Present?
Yes
Is Fuse
Open?
No
Yes
No
Replace
Main Board
Replace
Power Supply
Board
Replace
Power Supply
Board
Check
AC-OFF-Detect
(In STBY Mode)
Is
voltage
3.3V
Present ?
Replace
Power Supply
Board
No
Yes
Press TV
Power Button
Does the
“Power” LED
Light?
Yes
No
Replace
Remote Batteries or
Remote
Replace
Main Board
No
Yes
FIGURE 5-2. NO POWER FLOWCHART
KDL-60EX720/60EX723 38
SECTION 5 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Protect
Shutdown.
Standby LED
Blinking
No
Yes
Power Supply
Board
No
Yes
2X
Main Board
3X
4X
No
Momentary
Backlight
5X
Yes
6X
No
7X
Imediately
LCD Panel
TCON Board
LCD Panel
Yes
No
After a while
Main Board
Check
ventilation
Power Supply
Board
TCON Board
G8 Board
LED Drive Board
Check
LED-ON to
LED Drive Board
*Before Shutdown
Is voltage
3V before
Shutdown?
No Backlight
No
Yes
FIGURE 5-3. PROTECTION SHUTDOWN FLOWCHART
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