DOWNLOAD Sony KDL-32EX340 / KDL-42EX440 Service Manual ↓ Size: 2.26 MB | Pages: 43 in PDF or view online for FREE

Model
KDL-32EX340 KDL-42EX440
Pages
43
Size
2.26 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-32ex340-kdl-42ex440.pdf
Date
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Sony KDL-32EX340 / KDL-42EX440 Service Manual ▷ View online

KDL-32EX340/42EX440 9
SECTION 3 - FLOW CHARTS AND DIAGRAMS
BLOCK DIAGRAM
Component/Composite
RF
HDMI 1
PC HD15
POWER SUPPLY
SWITCH
UNIT
LED
IR RX
LCD PANEL, TCON, &
 LED BACKLIGHTS
A
GL9 (32")
H
L
R
ANALOG AUDIO OUT
OPTICAL AUDIO OUT
MT5389
A/V DECODER
A/V PROCESS
TUNER
USB
HDMI 2
LVDS
BACKLIGHT POWER
AC IN
CLASS D 
AUDIO
AMP
GL10 (42")
MAIN BOARD
IR BOARD
OVERALL BLOCK DIAGRAM
KDL-32EX340/42EX440 10
SECTION 3 - FLOW CHARTS AND DIAGRAMS
GND
REG 12V
STBY3.3V
POWER_ON 
1, 3
2
4
5, 7
AC_OFF_DET
AUDIO-12V
REG12V_GND
BLKT-EN
6
6, 7
8
9, 11
BKL-ERR
LCD-PWR-SW
PANEL-PWR
12
13, 15
14
GND
16
AC IN (N)
AC IN (H)
1
2
CN6401
A
REG 12V
GND
AUDIO_12V
8
5, 7, 9
10
DIMMER
BL_ERR
1
12
CN201
TCON_12V
14
AC_FF_DET
TCON_ON
3
15
BL_ON
13
STBY 3.3V
4
POWER_ON
2
GL9 (32")
GL10 (42")
CN6101
LCD PANEL
V+
1
N/C
V-
2
3
CN6801
V+
1
N/C
V-
2
3
CN6802 (42" ONLY)
POWER SUPPLY
MAIN BOARD
NO POWER
POWER AND CONTROL BLOCK DIAGRAM
KDL-32EX340/42EX440 11
SECTION 3 - FLOW CHARTS AND DIAGRAMS
No Power
Is standby LED 
blinking?
No
Yes
No
See Protection 
Shutdown 
 flowchart
Yes
Does red standby 
LED on front panel 
light?
Press power 
button while 
monitoring pin 4 of 
CN6401 on power 
supply board
High (3.3V)
on pin 4?
Yes
No
High (3.3V)
on pin 6 of CN6401?
Yes
No
Remove AC 
power. Wait al 
least 20 seconds 
and re-apply.
Main Board*
Power Supply 
Board*
Power Supply 
Board*
Power Supply 
Board*
NO POWER FLOWCHART
*For Part Number information, refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
KDL-32EX340/42EX440 12
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
STANDBY LED BLINKING
Protect 
Shutdown. 
Standby LED 
Blinking
No
Yes
No
Yes
2X
Main Board*
3X
5X
No
Yes
LCD Panel*
6X
Yes
7X
No
Immediately
After a While
Check room 
temperature and 
ventilation around 
unit
Power Supply 
Board*
Main Board*
“SONY” logo 
appears before 
shutdown?
Yes
No
LCD Panel*
Power Supply 
Board*
PROTECTION SHUTDOWN FLOWCHART
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