Th-42Px25U-P Protection Circuits - Panasonic GP6DU Technical Manual

TH-42PX25U-P Protection Circuits

Protection circuits are incorporated in the unit to prevent the failure of a single circuit or
a component from creating catastrophic damage.
A shutdown condition occurs when a there is an over voltage, a short, or a drop in any
of the voltage lines. Also, when the fans are drawing more current than normal the
shutdown circuit is triggered.
The microprocessor IC9709 detects when a shutdown condition has been triggered.
Figure 34 - TH-PX25U_SOS Detect Circuit
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