Haier p42a1-ak Supplementary Manual
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C: Debug flow-chart
AC ON
Power board: NO
STANDBY +5V FOUND
Initialization:
Initialization:
YES
Power failure
Non integrity
GOOD
Whether alternating current
input
input
System Reset
Power On
+9V +12V +5V
+2.5V +3.3V +1.8V
FOUND
*Repair power board.
*Replace fuse.
*Check dc-dc circuit
and LDO circuit.
SvpEx Reset
Svpex E0 Good
Svpex E0 Good
SvpEx E0 error
*SvpEx no ack.
* SvpEx communicate with
* SvpEx communicate with
MCU was wrong.
InitAppHas Accomplish
PICTURE DISPLAY
*Vs on
+60 +190 FOUND
*
SvpEx communicate with
DDR was wrong.