C: Debug Flow-Chart - Akai P42L6A-T1 Service Manual

C: Debug flow-chart

Initialization:
*Vs on
+60 +190 FOUND
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
- 26 -
Whether
NO
input
Power failure
SvpEx E0 error
*SvpEx no ack.
* SvpEx communicate with
Non integrity
alternating current
*Repair power board.
*Replace fuse.
*Check dc-dc circuit
and LDO circuit.
MCU was wrong.
SvpEx communicate with
*
DDR was wrong.