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PPBUS_G3H missing on a1932
- Thread starter Leroy
- Start date
Did you try to trigger PMU_ONOFF_L signal?
We already know that you get stable PPBUS_G3H only with battery.
What reaction do you expect on the USBC meter then?
We already know that you get stable PPBUS_G3H only with battery.
What reaction do you expect on the USBC meter then?
Okay retry:
with batt and power connected PPBUS_G3H 11.66V
Only batt 11.66V
PMU_ONOFF_L i tried to trigger with a tweezer. one end on the pin and the other on ground. No change
Only with the batt i needed to connect the power cable shortly to get some voltage on the board.
I also measured the voltage on ppbus without the power, batt and after pushing the little power depleting button. the voltage is stil there but dropping. Now after 5 minutes still 0.264V. That should not be right?
with batt and power connected PPBUS_G3H 11.66V
Only batt 11.66V
PMU_ONOFF_L i tried to trigger with a tweezer. one end on the pin and the other on ground. No change
Only with the batt i needed to connect the power cable shortly to get some voltage on the board.
I also measured the voltage on ppbus without the power, batt and after pushing the little power depleting button. the voltage is stil there but dropping. Now after 5 minutes still 0.264V. That should not be right?
Last edited:
Really matters 0.264V?
Put some logic on your job; what's the reason to check voltage without any power?
I recommend to use a switch over the power pads (with 5-10cm cables), instead of tweezers; must be sure to make good contact.
Put some logic on your job; what's the reason to check voltage without any power?
I recommend to use a switch over the power pads (with 5-10cm cables), instead of tweezers; must be sure to make good contact.
So you get 11.66V with battery connected, but no reaction when trigger PMU_ONOFF_L.
BTW, PMU_ONOFF_L stays high (3V), if don't touch it?
BTW, PMU_ONOFF_L stays high (3V), if don't touch it?
3V3_S5 comes on?
Apart of USB-C input you have problems on secondary side too.
There may be a problem with T2 chip.
Check all G3S voltages, if any appears.
There may be a problem with T2 chip.
Check all G3S voltages, if any appears.
The "very long list" of G3S voltages:
PP1V8_G3S, PP3V3_G3S, PP5V_G3S.
I didn't ask you to check ALL signals/voltages with G3S on name!
Put some logic on your job...
PP1V8_G3S, PP3V3_G3S, PP5V_G3S.
I didn't ask you to check ALL signals/voltages with G3S on name!
Put some logic on your job...
And diode mode readings?
Is so long this thread, not easy to follow.
Post actual voltages for PPBUS_G3H, (w/ and w/o battery), 3V3_G3H_RTC and 3V3_G3H.
Is the machine recognized into DFU mode?
Post actual voltages for PPBUS_G3H, (w/ and w/o battery), 3V3_G3H_RTC and 3V3_G3H.
Is the machine recognized into DFU mode?
Check SLPS2R and AWAKE voltages on the coils surrounding U7800.