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C: Debug flow-chart
Initialization:
*Vs on
+60 +190 FOUND
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AC ON
Power board:
STANDBY +5V FOUND
System Reset
Power On
YES
+9V +12V +5V
+2.5V +3.3V +1.8V
FOUND
SvpEx Reset
Svpex E0 Good
InitAppHas Accomplish
PICTURE DISPLAY
GOOD
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Whether
NO
input
Power failure
SvpEx E0 error
*SvpEx no ack.
* SvpEx communicate with
MCU was wrong.
Non integrity
alternating
current
*Repair power board.
*Replace fuse.
*Check dc-dc circuit
and LDO circuit.
SvpEx communicate with
*
DDR was wrong.
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