DOWNLOAD Sony KDL-22EX355 / KDL-32EX355 / KDL-40EX455 Service Manual ↓ Size: 3.19 MB | Pages: 46 in PDF or view online for FREE

Model
KDL-22EX355 KDL-32EX355 KDL-40EX455
Pages
46
Size
3.19 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-22ex355-kdl-32ex355-kdl-40ex455.pdf
Date
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Sony KDL-22EX355 / KDL-32EX355 / KDL-40EX455 Service Manual ▷ View online

KDL-22EX355/32EX355/40EX455 12
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
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
Main Board*
Power Supply 
Board*
High (3.3V)
on pin 1?
Yes
No
Power Supply 
Board*
Power Supply 
Board*
NO POWER FLOWCHART
KDL-22EX355/32EX355/40EX455 13
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 16
.
KDL-22EX355/32EX355/40EX455 14
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO VIDEO
No Video
Backlights 
turned on?
Unplug LVDS 
connector at 
TCON while unit 
is running. This 
may need to be 
done more than 
once
Any flashes 
seen on 
screen?
Yes
No
Any OSD 
graphics 
present?
No
Main Board*
No
LCD Panel* 
Yes
Yes
Main Board*
LCD Panel* 
NO VIDEO FLOWCHART
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
KDL-22EX355/32EX355/40EX455 15
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
Video Distortion
Is distortion 
across entire 
screen?
Any horizontal 
lines?
No
No
Yes
Yes
Improper of 
missing colors?
Yes
Main Board*
No
Vertical lines
or bars?
No
Yes
Lines move 
when wide-mode 
changed?
Yes
No
LCD Panel*
TCON Board*
Main Board*
LCD Panel*
Any single or 
isolated vertical 
lines?
Yes
LCD Panel*
More than 1 
vertical band?
No
Yes
LCD Panel*
TCON Board*
VIDEO DISTORTION FLOWCHART
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