Im working on this board day11amb6e0. On the KBC Im gettting
RSMRST# 3.3v then to 0v immediately
S5_ON 3.3v then 0v immediately.
No +3v to KBC
Mainon stays at 0v
Also theres no +5vs5 or +3vs5
PU11
vin is ok
+3vpcu is ok +3v
S5_on 3.3v then 0v immediately
Pgood 0v
En2 4.5v
PU12
S5_on 3.3v then 0v immediately
+5VPCU ok 5v
pgood 0v.
What would cause the S5_on to drop to 0v ?
When S5_on is 3.3v then I get +5VS5 and +3VS5 for a couple of seconds then both drop to 0v because s5_on goes low.
RSMRST# 3.3v then to 0v immediately
S5_ON 3.3v then 0v immediately.
No +3v to KBC
Mainon stays at 0v
Also theres no +5vs5 or +3vs5
PU11
vin is ok
+3vpcu is ok +3v
S5_on 3.3v then 0v immediately
Pgood 0v
En2 4.5v
PU12
S5_on 3.3v then 0v immediately
+5VPCU ok 5v
pgood 0v.
What would cause the S5_on to drop to 0v ?
When S5_on is 3.3v then I get +5VS5 and +3VS5 for a couple of seconds then both drop to 0v because s5_on goes low.
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