Akai PDP42Z5TA - 42" Plasma TV, Service Manual

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Basic operation of Plasma Display
1. After turning on power switch,
PSU
board sends 5Vst-by Volt to Main
IC MT
5371
waiting for ON signals from Key Switch or Remote Receiver.
2. When the ON signal from Key Switch or Remote Receiver is detected, MT
5371
will send
ON Control signals to Power. Then
Sub
P
SU
sends 5Vsc, 9Vsc, 24V
to PCBs working.
This time
Logic Board
will send signals to
Panel by X/Y SUS Board, OSD on the panel
and
display
available signal. If the audio
signals input, them will be amplified by Audio
AMP and transmitted to Speakers.
3. If some abnormal signals are detected (for example: over volts, over current, over
temperature and under volts), the system will be shut down by Power off.
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