Panasonic S Series, Technical Manual

Page: 32 / 111

Slide 31
SOS Detect Circuit
5.SOS Detect Circuit Explanation (3)
-
Normal: H
Abnormal: L
Normal: L
Abnormal: H
A/D Input
Voltage
Normal: H
Abnormal: L
-
Signal
PARAGON
Input terminal
Peaks sLD8
Input terminal
Detection Item Blinks
ADIN4_SRV STMADIN1 Sound AMP Error SOUND SOS 12
OPCTRL10 STMTIME5
P3.3V: Low power
P15V: Missing
P15V DET 2
- -
Information error
FLASH check sum error
Power startup error
Communication (PD6H, PARAGON) error
System Error 1
13
10
6,7,8,9 STMADIN2
-
OPCTRL4
ADIN7_SRV
Normal :0-0.45V
SOS8_SS :0.55-0.95V
SOS6_SC :1.13-1.55V
SOS_DCC :1.75-2.15V
FFC_OFF_DET :2.35-2.75V
SOS7_SC2 :2.8-3.3V
Panel SOS
-
STMGPIO0
Internal Error Emergency Error
SUB3.3V/SUB5V: Overcharge
SUB3.3/5V
overcharge
Protection circuits are incorporated in the unit to prevent the failure of a single circuit or component from
creating catastrophic damage. A shutdown condition occurs when there is an over voltage, a short or a
drop in any of the voltage lines.
The processor (IC8000) detect when a shutdown condition has been triggered.
When an abnormality has occurred, the unit’s protection circuit operates and the TV is reset to the standby
mode. At this time, the defective block can be identified by the number of blinks of the POWER LED on the
front of the unit.
The number of times that the POWER LED blinks indicates the areas where a problem is suspected.