DOWNLOAD Sony KDL-32BX355 / KDL-32BX356 / KDL-40BX455 / KDL-46BX455 Service Manual ↓ Size: 6.66 MB | Pages: 37 in PDF or view online for FREE

Model
KDL-32BX355 KDL-32BX356 KDL-40BX455 KDL-46BX455
Pages
37
Size
6.66 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-32bx355-kdl-32bx356-kdl-40bx455-kdl-46bx455.pdf
Date
PREV: Sony KDL-40HX752 / KDL-46HX752 Service Manual

Sony KDL-32BX355 / KDL-32BX356 / KDL-40BX455 / KDL-46BX455 Service Manual ▷ View online

KDL-32BX355/32BX356/40BX455/46BX455 9
SECTION 3 - FLOW CHARTS AND DIAGRAMS
BLOCK DIAGRAM
Component/Composite
RF
Composite
HDMI 1
PC HD15
POWER SUPPLY
SWITCH
UNIT
LED
IR RX
LCD PANEL, TCON, &
CCFL BACKLIGHTS
A
H
L
R
ANALOG AUDIO OUT
OPTICAL AUDIO OUT
MT5389
A/V DECODER
A/V PROCESS
TUNER
USB 1
HDMI 2
LVDS
24V & CTL
AC IN
INVERTER
CLASS D 
AUDIO 
AMP
G10 (40")
G11 (46")
HDMI 3
HDMI 4
Ethernet
USB 2
G9 (32")
OVERALL BLOCK DIAGRAM
KDL-32BX355/32BX356/40BX455/46BX455 10
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO POWER
UNREG24V
BL-ON
GND
BL_ERR
1~5
6~10
11
12
STBY3.3V
AUDIO_12V
AC_OFF_DET
POWER_ON
1
2
3
4
AUDIO_GND
BL_ERR
REG12V_GND
REG12V
5
6, 7
8, 9
10
BL_ON
TCON_12V
DIMMER
N/C
11
12
13
14
TCON_ON
15
AC IN (N)
AC IN (H)
1
2
CN6401
A
N/C
DIMMER
13
14
CN6402
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
G10 (40")
G11 (46")
INVERTER
CN6101
LCD PANEL &
CCFL BACKLIGHTS
G9 (32")
POWER AND CONTROL BLOCK DIAGRAM
KDL-32BX355/32BX356/40BX455/46BX455 11
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
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 3 of 
CN6401 on power 
supply board
High (3.3V)
on pin 3?
Yes
No
Main Board*
Power Supply 
Board*
High (3.3V)
on pin 2?
Yes
No
Power Supply 
Board*
Power Supply 
Board*
NO POWER FLOWCHART
KDL-32BX355/32BX356/40BX455/46BX455 12
SECTION 3 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Protect
Shutdown.
Standby LED 
Blinking
No
Yes
No
Yes
2X
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*
Main Board*
PROTECTION SHUTDOWN FLOWCHART
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
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