Slide 45
7 Blinks Error Code
These conditions can cause the TV to shutdown and the power LED to blink 7 times
5.SOS Detect Circuit Explanation (12)
The IC16725 in the SN board checks several errors (SERR as OC2 check, OVP as VAD and VSCN
voltage, PGOOD as F15V voltage).
If the IC detects error, the SOS circuit generates the SOS7_SC2 signal causing the unit shutdown
and the power LED to blink 7 times.
1. VAD or VSCN circuit defect
2. F5V / F15V abnormal voltage
3. VAD / VSCN abnormal voltage
TC-P42S60
SOS7_SC2
SN20
SN
25
F5V
F15V
<VAD
VFG
IC16725
Abnormal Check
OK/NG
VFG
Other Error
To IC8000
A/D Input
A20
6
IC5000
ASIC
12
11
SOS_PRIO1
Panel_SOS
A
5V
Invert OC2
GND
To Next Page
Loading...
