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DOWNLOAD Sony KDL-32EX720 / KDL-32EX723 / KDL-40EX720 / KDL-40EX723 / KDL-46EX720 / KDL-46EX723 / KDL-55EX720 / KDL-55EX723 Service Manual ↓ Size: 7.99 MB | Pages: 112 in PDF or view online for FREE

Model
KDL-32EX720 KDL-32EX723 KDL-40EX720 KDL-40EX723 KDL-46EX720 KDL-46EX723 KDL-55EX720 KDL-55EX723
Pages
112
Size
7.99 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / SERVICE TRAINING MANUAL
File
kdl-32ex720-kdl-32ex723-kdl-40ex720-kdl-40ex723-kd.pdf
Date
PREV: Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 (serv.man2) Service Manual

Sony KDL-32EX720 / KDL-32EX723 / KDL-40EX720 / KDL-40EX723 / KDL-46EX720 / KDL-46EX723 / KDL-55EX720 / KDL-55EX723 Service Manual ▷ View online

KDL-32EX720/32EX723/40EX720/40EX723/46EX720/46EX723/55EX720/55EX723 43
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-32EX720/32EX723/40EX720/40EX723/46EX720/46EX723/55EX720/55EX723 44
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO POWER
G10 (32")
G4 (40")
G5 (46")
G6 (55")
LCD 
PANEL
TCON
(120Hz)
LCD Panel Assembly
LCD 
Panel 
BATV
G8
LD
LED 
Backlights
LD
19V
24V
24V
+109V
-61V to -82V
55" Models
32", 40", 46" Models
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
1
1
2
18
14
1
8
10
49
HMS3
HLR2
Wireless
WIFI
1
2
110VAC
CN6502
CN6801
CN6704 (32")
CN6151 (40",46")
CN6101 (55")
CN6701
CN6700
CN1002
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
14
12
LED-ON
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
CN1001
CN1000
1
1
FIGURE 5-1.  POWER SUPPLY DIAGRAM
KDL-32EX720/32EX723/40EX720/40EX723/46EX720/46EX723/55EX720/55EX723 45
SECTION 5 - FLOW CHARTS AND DIAGRAMS
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
Power Error
FIGURE 5-2.  NO POWER
KDL-32EX720/32EX723/40EX720/40EX723/46EX720/46EX723/55EX720/55EX723 46
SECTION 5 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Unit Shuts OFF
RED LED 
Blinking
2X Blink Pattern
REG12V Error
Check REG12V
*Before Shutdown
Yes
No
Check Power-ON
*Before Shutdown
Is voltage 
12V
Present ?
Is 
voltage 
3V
Present ?
Yes
No
Replace 
Main Board
Replace 
Power Supply 
Board
Replace 
Power Supply 
Board
FIGURE 5-3.  2 BLINK ERROR
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