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Protection Circuit
This TV set has a built-in power supply protection circuit.
It is provided to protect the TV set in case of a power supply circuit malfunctions. When something abnormality occurs
during TV reception, the TV set goes to the stand-by mode.
Releasing the protective circuit and restoring power supply
To release the protective circuit and restore power supply, disconnect the AC cord or AC adaptor for a short time. This
will work only if the power supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power
cannot be restored and the circuit will have to be repaired.
When operating the Protection Circuit, the Stand-by and Power Indicator will blink.
The number of blinks will be determined by the type of failure detected as shown below.
1. One time blinks: Power failure of Video Decoder in IC 201.
2. Two times blinks: Scaler error of IC 201.
3. Three times blinks: Power failure of 2.5 V DecDig supply in IC 201.
(In case of 2.5V falls less than 2.0V for 1 second).
4. Four times blinks: Power failure of 5V supply in IC 201. (In case of 5V falls less than 4.0V for 1 second).
5. Five times blinks :Power fail-1 (Pad-154 AE18 of IC201).
Detected “5V_PANEL POWER”, “1V8_SW”, “5VCPU”, “5V_SW”, “3V3_SW” and “3V3STB”.
(Normal=High, Failure=Low)
6. Six times blinks: Power fail-2 (Pad-241 AD8 of IC201).
Detected “8V” (for IC2001) and “14V_AUDIO”. (Normal=High, Failure=Low)
