Sony KDL-40EX725 Service Manual page 51

SECTION 5 - FLOW CHARTS AND DIAGRAMS
KDL-32EX725/40EX725/46EX725/55EX725
Unit Shuts OFF
RED LED
Blinking
6X Blink Pattern
(Backlight Error)
Is "SONY" logo
Displayed and
Tones Heard?
Is
Backlight ON
No
Before Shut
Down?
Yes
Replace
LCD Panel
Assembly
Is
Issue No Replace
Resolved ?
Main Board
Yes
Issue
Resolved
FIGURE 5-7. 6 BLINK ERROR
Check +109V & -70V
LED Supplies
*Before Shutdown
Are
Replace
Yes
all voltage
LCD Panel
Present ?
Assembly
No
Check 24V to LD-Board
*Before Shutdown
Is
voltage
Replace
Yes
24V Before
LD-Board
Shutdown?
No
Check LED-ON to LD-Board
*Before Shutdown
Is
voltage
Replace
No
3V Before
TCON-Board
Shutdown ?
Yes
Check Dimmer signal
*Before Shutdown
Is
voltage
No Check for
1V to 3V Before
Short
Shutdown ?
Replace
Yes
Main Board
Replace
Power Supply
Board
45