Bouba148
New member
Hi Team,
I have a 3115 board that missing S4 state, after following the schematic I've seen that PM_SLP_S5_L was missing, and this one is provided by the PCH.
At this point we now that it could be many things:
I've mesured
PM_BATLOW_L: 3.307V OK
SMC_ADAPTER_EN: 3.446
PPVRTC_G3H: 3.31
Then I checked SMC_ONOFF_L to be sure that it is NOT always low and keeps the SMC in reset mode: solid 3.483V , never pulsing down.
I decided to short the power pads at R5015 or R5016 and suddenly it starts.
WHY?
could some one please explain me the sequence/ conditions for the SMC to start: does it only needs SMC_RESET_L to start or something else? (of course if all the PWR and SLP rails present).
Should I try to put back the board in the MBP and try an SMC + PRAM Reset?
I have a 3115 board that missing S4 state, after following the schematic I've seen that PM_SLP_S5_L was missing, and this one is provided by the PCH.
At this point we now that it could be many things:
I've mesured
PM_BATLOW_L: 3.307V OK
SMC_ADAPTER_EN: 3.446
PPVRTC_G3H: 3.31
Then I checked SMC_ONOFF_L to be sure that it is NOT always low and keeps the SMC in reset mode: solid 3.483V , never pulsing down.
I decided to short the power pads at R5015 or R5016 and suddenly it starts.
WHY?
could some one please explain me the sequence/ conditions for the SMC to start: does it only needs SMC_RESET_L to start or something else? (of course if all the PWR and SLP rails present).
Should I try to put back the board in the MBP and try an SMC + PRAM Reset?