Sony KDL-40HX755 / KDL-46HX755 / KDL-55HX755 Service Manual ▷ View online
KDL-40HX755/46HX755/55HX755 15
SECTION 3 - 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
Yes
5X
Yes
6X
No
7X
Imediately
LCD Panel*
TCON
(LCD Panel)*
Yes
No
After a while
Main Board*
Check ventilation
10X
HEM3 Board
Power Supply
Board*
8X
See Resolving an
8x Error
10X
3D IR Emitter
Board*
PROTECTION SHUTDOWN FLOWCHART
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 19
.
KDL-40HX755/46HX755/55HX755 16
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO PICTURE
No Video
Backlights
turned on?
Unplug LVDS
connector with
unit off. Turn unit
back on
Test patterns
display on
screen?
Yes
No
TCON
(LCD Panel)*
Sony logo
appears
momentarily?
No
Main Board*
No
Yes
Yes
Main Board*
Locate
CN6205 on
Power
Supply Board
Zero volts at
Pin 2?
TCON
(LCD Panel)*
Yes
No
Zero volts at
Pin 4?
Yes
Main Board*
No
LCD Panel*
NO VIDEO FLOWCHART
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 19
.
KDL-40HX755/46HX755/55HX755 17
SECTION 3 - FLOW CHARTS AND DIAGRAMS
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper or
missing colors?
Yes
Main Board
No
Vertical lines
or bars?
No
Yes
Lines
move when
wide-mode
changed?
Yes
No
TCON
(LCD Panel)
Main Board
LCD Panel
Any single or
isolated vertical
lines?
Yes
LCD Panel
More than 1
vertical band?
No
Yes
TCON
(LCD Panel)
VIDEO DISTORTION
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 19
.
KDL-40HX755/46HX755/55HX755 18
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO 3D VIEWING
LOCATED ON LOWER BEZEL NEAR SONY LOGO
3D Not Working
Use video or still
camera to view IR
LED’s on IR
transmitter
IR LED’s lighting?
No
Double images
displayed on
screen?
Yes
Main Board*
No
Yes
Press “3D” button on
remote commander
and select
“Simulated 3D”
SYNC EMITTER
LED’s
Shutter Glasses
View image with
known working
pair of shutter
glasses.
Double images
become one?
Yes
3D OK
No
3D IR Emitter
Board*
NO 3D FLOWCHART
*For Part Number information, Refer to
“Section 4 - Disassembly/Part Number Information” on page 19
.
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