Panasonic TC-P50S60 Technical Manual page 64

These conditions can cause the TV to shutdown and the power LED to blink 7 times
1. VAD or VSCN circuit defect
2. Disconnection of SC and SU/SD board
3. F5V / F15V abnormal voltage
4. VAD / VSCN abnormal voltage
SD
SC
SD42
9 9
SC42
<VAD
SD11
19
SU11
2
SC41
1 1
SU41
VFG
SU
The IC16725 in the SC board checks several errors (CERR as disconnection between SC and
SU/SD board, SERR as F5V voltage, 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.
SOS Detect Circuit Explanation (10)
7 Blinks Error Code
VFG
2 1
SC50
Abnormal Check
5V
OK/NG
IC16725
Other Error
F15V
F5V
VFG
SOS7_SC2
SC20
A
6
25
A20
11
SOS_PRIO1
IC5000
ASIC
Panel_SOS
12
To PARAGON
A/D Input
Slide 64