42PA4500-UM, 42PA450C-UM (CHASSIS:PU23A) - LG TV Service Manual (repair manual). Page 38

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5. GP4 LM1 SOC Power Sequence Procedure
Hot Point
SOC_RESET
+3.3V_AVDD
+1.10V_VDDC
+1.5V_DDR_IN
+3.3V_AVDD
+1.10V_VDDC
+1.5V_DDR_IN
0ms
Multi_PWR
288ms
[Spec] before all pwr input raise
SOC_RESET
◈ SOC_RESET timing and Power sequence are ok.
Threshold
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